NJU7089
- 1 - Ver1.4e
HIGH-POWER & LOW-VOLTAGE AUDIO POWER AMPLIFIER
■ GENERAL DESCRIPTION
The NJU7089 is an audio power amplifier designed for telephone applications. No external coupling capacitors are required because of the differential outputs. The closed loop gain is adjusted by two external resistors, and a SD pin permit power down with muting the input signal.
The NJU7089 improves high output power compared with other amplifier.
■ FEATURES
Operating Voltage V+=1.8 to 5.5V Operating Current IDD1=3.0mA typ. (V+=5V,RL=, no signal) IDD1=2.5mA typ. (V+=3V,RL=, no signal) Output Power P0=1.2W typ. (V+=5V,RL=8,THD=1%)
P0=500mW typ.(V+=3.3V,RL=8,THD=1%) Supply Current in Shutdown Mode Thermal Shutdown Circuit Pop Noise Suppression Circuit Over Current Protection Circuit C-MOS Technology Package Outline VSP8 / SSOP20-C3 / ESON8-V1 / HTSSOP24-P1
■ PIN CONFIGURATION & BLOCK DIAGRAM
■ PACKAGE OUTLINE
NJU7089R
NJU7089VC3
NJU7089KV1
NJU7089VP1
BIAS TSDSD
Bypass
+IN
-IN
OUTB
OUTA
V+
GND
NJU7089
- 2 -
■ PIN CONFIGURATION
VSP8 ESON8-V1
Top View Bottom View *(1) The PAD in the center part on the back is connected with the internal GND,
therefore it connects to GND
No. Symbol Function
1 SD Shutdown Enable 2 Bypass Reference Voltage 3 +IN Noninverted Input 4 -IN Inverted Input 5 OUTA Output A 6 V+ Supply Voltage 7 GND Ground 8 OUTB Output B
SSOP20-C3
No. Symbol Function No. Symbol Function
1 NC No Connect 11 NC No Connect 2 NC No Connect 12 NC No Connect 3 NC No Connect 13 NC No Connect 4 SD Shutdown Enable 14 OUTA Output A 5 Bypass Reference Voltage 15 V+ Supply Voltage 6 +IN Noninverted Input 16 GND Ground 7 -IN Inverted Input 17 OUTB Output B 8 NC No Connect 18 NC No Connect 9 NC No Connect 19 NC No Connect
10 NC No Connect 20 NC No Connect
1 432
8 567
8 567
1 4321 8
54
1 20
1110
*(1)
NJU7089
- 3 -
HTSSOP24-P1 Top View Bottom View *(2) The PAD in the center part on the back is connected with the internal GND,
therefore it connects to GND
No. Symbol Function No. Symbol Function
1 NC No Connect 13 NC No Connect 2 NC No Connect 14 NC No Connect 3 NC No Connect 15 NC No Connect 4 NC No Connect 16 NC No Connect 5 SD Shutdown Enable 17 OUTA Output A 6 Bypass Reference Voltage 18 V+ Supply Voltage 7 +IN Noninverted Input 19 GND Ground 8 -IN Inverted Input 20 OUTB Output B 9 NC No Connect 21 NC No Connect
10 NC No Connect 22 NC No Connect 11 NC No Connect 23 NC No Connect 12 NC No Connect 24 NC No Connect
1 24
1312
124
13 12
*(2)
NJU7089
- 4 -
■ ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V+ +7 V
Power Dissipation PD
570 *1) / 770 *2) (VSP8) 970 *1) / 1400 *2) (SSOP20-C3) 570 *3) / 1700 *4) (ESON8-V1)
1000 *5) / 3000 *6) (HTSSOP24-P1)
mW
Output Peak Current Iop 600 mA Input Voltage Range VIN -0.3 to V++0.3 *7) V Operating Temperature Range Topr -40 to +85 C Storage Temperature Range Tstg -40 to +150 C
*1) EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting. *2) EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 4layers, FR-4) mounting. *3) EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting. The PAD connecting to GND in the center part on the back *4) EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 4layers, FR-4, Applying a thermal via hole to a board based on JEDEC standard JESD51-5)
mounting. The PAD connecting to GND in the center part on the back *5) EIA/JEDEC STANDARD Test board (114.5 x 101.5 x 1.6mm, 2layers, FR-4) mounting. The PAD connecting to GND in the center part on the back *6) EIA/JEDEC STANDARD Test board (114.5 x 101.5 x 1.6mm, 4layers, FR-4, Applying a thermal via hole to a board based on JEDEC standard JESD51-5)
mounting. The PAD connecting to GND in the center part on the back *7) SD, IN+, IN-, OUTA, OUTB terminals.
■ RECOMMENDED OPERATING VOLTAGE RANGE (Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Voltage Range V+ - 1.8 3.0 5.5 V ■ ELECTRICAL CHARACTERISTICS Amplifier (Ta=25C,V+=5V,GV=6dB,f=1kHz,RL=8,Active)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Current 1 IDD1
No signal, RL= - 3.0 6 mA Operating Current 2 IDD2 No signal, RL=, VSD=0.25V - - 2 A Output Power 1 PO1 THD1% 0.9 1.2 - W Output Power 2 PO2 V+=3.3V, THD1% 375 500 - mW Output Power 3 PO3 V+=1.8V, THD1% - 125 - mW Total Harmonic Distortion (THD+N) THD+N PO=1W - 0.1 - %
Shutdown Attenuation ATTSD Vin=1Vrms, Shutdown - -135 - dB Supply Voltage Rejection Raito PSRR Vripple=100mVrms - 55 - dB
Output Offset Voltage VOD No signal - - 35 mV (Ta=25C,V+=3V,GV=6dB,f=1kHz,RL=8,Active)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Current 1 IDD1
No signal, RL= - 2.5 4 mA Operating Current 2 IDD2 No signal, RL=, VSD=0.25V - - 2 A Total Harmonic Distortion (THD+N) THD+N PO=400mW - 0.1 - %
Shutdown Attenuation ATTSD Vin=500mVrms, Shutdown - -130 - dB Supply Voltage Rejection Raito PSRR Vripple=100mVrms - 55 - dB
Output Offset Voltage VOD No signal - - 35 mV VSD: SD Terminal Voltage
NJU7089
- 5 -
Mode Control (Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
High Level Input Voltage VIH - 1.5 - V+ V Low Level Input Voltage VIL - 0 - 0.25
■ CONTROL TERMINAL EXPLANATION
MODE CONTROL SIGNAL (SD Terminal) STATUS Shutdown L(=VIL) IC is standby.
Active H(=VIH) IC is active.
NJU7089
- 6 -
BIAS TSD
-IN
+IN
V+
OUTA
OUTBBypass
SD
GND
RL=∞
20kΩ
20kΩ
0.39uF
V+
+
1uF
V+
■ TEST CIRCUIT (IDD1, IDD2, VOD) ■ TEST CIRCUIT (PO1, PO2, PO3, THD+N, ATTSD)
BIAS TSD
-IN
+IN
V+
OUTA
OUTBBypass
SD
GND
RL=8Ω
Vin
V+
+
20kΩ
20kΩ
0.39uF
1uF
V+
NJU7089
- 7 -
■ TEST CIRCUIT (PSRR)
BIAS TSD
-IN
+IN
V+
OUTA
OUTBBypass
SD
GND
RL=8Ω
Vin
V++
20kΩ
20kΩ
0.39uF
1uF
V+
NJU7089
- 8 -
TERMINAL DESCRIPTION TERMINAL SYMBOL FUNCTION EQUIVALENT CIRCUIT VOLTAGE VSP8,
ESON8 SSOP
20 HTSSOP
24
1 4 5 SD Shutdown Enable
0V
2 5 6 Bypass Reference Voltage
V+/2
3 6 7 +IN Noninverted Input
V+/2
4 7 8 -IN Inverted Input
V+/2
5 8
14 17
17 20
OUTA OUTB
Output A Output B
V+/2
GND
OUTAOUTB 300Ω
20kΩ
V+
GND
-IN 300
V
GND
+IN 300Ω
V+
V+
GND
Bypass 300Ω
V+
75kΩ
50kΩ
V+
V+
GND
SD 300Ω
100kΩ
NJU7089
- 9 -
■ APPLICATION CIRCUIT
BIAS
+
TSDSD
Bypass
+IN
-IN
OUTB
OUTA 8ΩSpeaker
V+
GNDShutdown
Control
Cb
Ci RiVin
Rf
BIAS
+
TSDSD
Bypass
+IN
-IN
OUTB
OUTA 8ΩSpeaker
V+
GNDShutdown
Control
Cb
Ci RiVin-
Rf
Ci RiVin+
Rf
NJU7089
- 10 -
Technical Information ■ APPLICATION NOTES
The NJU7089 is a 1.2W mono bridge–tied-load [BTL] amplifier designed to drive a speaker with 8 impedance. The NJU7089 can run from a 1.8V to 5.5V supply. The voltage gain is set by the user-selected resister (Ri, Rf). The NJU7089 is equipped with a shutdown [SD] mode that will reduce the supply current and pop noise during the SD mode ON/OFF.
In this application note, detailed information on the usage of this IC and its operation are discussed.
1. Operating Overview
Fig.1 shows the NJU7089 internal circuit. It comprises of two power amps (Amp-A, Amp-B), a bias circuit, and a thermal shutdown[TSD] circuit. Pin 4 and Pin 3 are the inverting and noninverting terminal to Amp-A. A reference voltage is provided at Pin 2, which should be connected to Pin 3. Pin 5 is the output terminal to Amp-A. A second operational amplifier, Amp-A is configured with a fixed gain of Av=-1 and produces the inverted signal of Pin5. The NJU7089 outputs at Pin 5 and Pin 8 produce a bridged configuration output to which a speaker can be connected. Twice the output voltage and four times output power in a bridged amplifier are possible as compared to a single-ended amplifier. When a SD mode is active, the internal switch(SW) turns off to stop an internal bias current. As a result, a SD mode reduces the supply current. The external capacitor (Cb) and Internal resistance eliminate disturbing pop noise during the SD mode ON/OFF. (Ref. Page 3) The external capacitor (Cb) value depends on the turn-on time. (Ref. Page 7)
BIAS1
2
3
4
8
5
7
6
-
+
-
+
TSD
V+
VOUTA
VOUTB
GNDSD
Bypass
+IN
-IN
Ci0.39uF
Ri20kΩ
Cb1uF
Rf20kΩ
Cv10uF
SW
IrefRL
8Ω+
+
ShutdownInput
SupplyVoltage
Input Singnal
Amp-B
Amp-A
Fig1. Block diagram and Application circuit
NJU7089
- 11 -
Technical Information 2. External Component 2.1 Bypass Capacitor
Power source bypass capacitor (Cv) should have margin for temperature characteristics and the better characteristic in high frequency. Design to provide low impedance for the wiring between the IC and the capacitor.
2.2 Input Resistor and Feedback Resistor
The voltage gain is set by the user-selected resistor(Ri, Rf) [1].
)2
(20=i
f
RR
LogGv …… [1] *Gain setting for BTL output
Design to lower the resistance value for Ri and Rf, because of the increase in output noise voltage and disturbing pop noise. Ri forms a HPF with the input coupling capacitor (Ci). (Ref. 2.3) 2.3 Input Coupling Capacitor
The input coupling capacitor (Ci) is necessary for DC cut. Ci forms a HPF with Ri. The cutoff frequency is calculated using [2].
cii fR
C2
1 …… [2] *fc=Cut-off frequency
2.4 Bypass Capacitor for Reference Voltage
The capacitor (Cb) stabilzes DC bias voltage. As Cb becomes lager, PSRR and pop noise are improved but turn on time becomes longer.
Table 1 Cv,Ri,Rf,Ci,Cb,and RL has limits in below table.
Please set these component values in the ranges.
Component Function Default value Recommendation Ranges Cv Supply bypass capacitor 10uF 1uF<Cv Ri input resistor 20kΩ 10kΩ<Ri<50kΩ Rf feedback resistor 20kΩ 10kΩ<Rf<50kΩ Ci Input coupling capacitor 0.39uF 0.047uF<Ci Cb Bypass pin capacitor 1uF 0.1uF<Cb RL Load resistor(speaker) 8Ω 4Ω<RL
NJU7089
- 12 -
Technical Information 3. Pop Noise during SD mode ON/OFF NJU7089 builds anti-pop circuit, but Pop noise is dependent on the value of external elements.
3.1 Shutdown (SD terminal = Low) -> Active (SD terminal=High) BTL amplifier does not generate sound, if there is no voltage difference between two outputs. But, common power amplifier generates pop noise according to the voltage difference of IN- and IN+ resulting from the difference of the charge time of Ci and Cb. NJU7089 does not generate pop noise by changing amp1(Fig3) from amp2(Fig2), after Ci and Cb are charged.
Fig2. Voltage follower amplifier Fig3. Inverting amplifier
VOUTA
VOUTB
Bypass
Ci Ri
Cb
Rf
AmpB
AmpA
-
+
-
+
-
+
amp1
amp2
V+
IN-
IN+
INPUT
VOUTA
VOUTB
Bypass
Ci Ri
Cb
Rf
AmpB
AmpA
-
+
-
+
-
+
amp1
amp2
V+
IN-
INPUT
IN+
charge
charge
NJU7089
- 13 -
Technical Information The terminal voltage in application circuit and the relation of time are shown in Fig. 4.
Fig. 5 shows that the pop noise became large by the input terminal voltage difference resulting from
change of the time constant. In order to make small the pop noise which became large by increase of Rf, etc., it is necessary to
enlarge Cb and to make small Ci. (However, Cb influences a turn on time, and Ci influences a frequency characteristic.) Table2~6 show the value of Cb for realizing the pop noise at an application circuit.
0 0.25 0.5 0.75 1
Time[sec]
Term
inal
vol
tage
[5V
/div
]
0 0.25 0.5 0.75 1
Time[sec]te
rmin
al v
olta
ge[5
V/d
iv]
OUTA
SD
OUTB
OUTA-OUTB
IN+ ,IN-
OUTA
SD
OUTB
OUTA-OUTB
IN+ ,IN-
Small pop noise Large pop noise
Large voltage difference Small voltage difference
Fig4. Terminal Voltage at application circuit Fig5. Terminal Voltage at Rf=100kΩ
NJU7089
- 14 -
Technical Information
Table2 the value of Cb at Ri=10kΩ
Table3 the value of Cb at Ri=20kΩ
Table4 the value of Cb at Ri=30kΩ
Table5 the value of Cb at Ri=40kΩ
Table6 the value of Cb at Ri=50kΩ
10kΩ 20kΩ 30kΩ 40kΩ 50kΩ0.047uF 01uF 0.33uF 0.33uF 0.33uF 0.33uF
0.1uF 0.33uF 0.33uF 1uF 1uF 1uF0.39uF 1uF 1uF 2uF 2uF 3.3uF0.47uF 1uF 2uF 2uF 3.3uF 3.3uF
1uF 2uF 3.3uF 4.7uF 10uF 10uF
Rf
Cin
10kΩ 20kΩ 30kΩ 40kΩ 50kΩ0.047uF 01uF 0.33uF 0.33uF 0.33uF 0.33uF
0.1uF 0.33uF 0.33uF 1uF 1uF 1uF0.39uF 1uF 1uF 2uF 2uF 3.3uF0.47uF 1uF 2uF 2uF 3.3uF 3.3uF
1uF 2uF 3.3uF 4.7uF 10uF 10uF
Rf
Cin
10kΩ 20kΩ 30kΩ 40kΩ 50kΩ0.047uF 01uF 0.33uF 0.33uF 0.33uF 0.33uF
0.1uF 0.33uF 0.33uF 1uF 1uF 1uF0.39uF 1uF 1uF 2uF 2uF 3.3uF0.47uF 1uF 2uF 2uF 3.3uF 3.3uF
1uF 2uF 3.3uF 4.7uF 10uF 10uF
Rf
Cin
10kΩ 20kΩ 30kΩ 40kΩ 50kΩ0.047uF 01uF 0.33uF 0.33uF 0.33uF 0.33uF
0.1uF 0.33uF 0.33uF 1uF 1uF 1uF0.39uF 1uF 1uF 2uF 2uF 3.3uF0.47uF 1uF 2uF 2uF 3.3uF 3.3uF
1uF 2uF 3.3uF 4.7uF 10uF 10uF
Rf
Cin
10kΩ 20kΩ 30kΩ 40kΩ 50kΩ0.047uF 01uF 0.33uF 0.33uF 0.33uF 0.33uF
0.1uF 0.33uF 0.33uF 1uF 1uF 1uF0.39uF 1uF 1uF 2uF 2uF 3.3uF0.47uF 1uF 2uF 2uF 3.3uF 3.3uF
1uF 2uF 3.3uF 4.7uF 10uF 10uF
Rf
Cin
NJU7089
- 15 -
Technical Information 3.2 Active (SD terminal = High) -> Shutdown (SD terminal=Low) When changing to a shutdown, pop noise is very small, because the voltage of OUTA and OUTB falls steeply and simultaneously. (This theory is realized only BTL) 3.3 Cut-off frequency In order to make small the pop noise, it is necessary to make small Ci. But, The value of Ci affects the low frequency performance of the circuit, because Ci forms with Ri a high-pass filter.
iic CRπ
f2
1= (Hz)
0 0.25 0.5 0.75 1
Time[sec]
Term
inal
Vol
tage
[5V
/div
]
OUTA
SD
OUTB
OUTA-OUTB
Fig6. Terminal Voltage at Shutdown
OUTA and OUTB fall simultaneously
Pop noise is not generated
NJU7089
- 16 -
Technical Information 4. Turn on/off time
As Cb becomes smaller, turn on time becomes shorter but pop noise and PSRR become worse. Turn off time is always very short. (It does not depend on the value of Cb.)
Relationship of turn on time and the value of Cb are shown in Fig. 7~8.
)5.0
5.0ln(•Ω100•= +VkCT bON -- (sec)
5. PSRR vs Cb As Cb becomes lager, PSRR becomes good. Relationship of PSRR and the value of Cb are shown in Fig. 9~10.
Turn on time vs Cb V+=5V Vin=1Vrms f=1kHz RL=8Ω Ta=25℃
0
100
200
300
400
500
600
0 1 2 3 4 5
Cb[uF]
Turn
on
time[
ms]
Turn on time vs Cb V+=3V Vin=0.5Vrms f=1kHz RL=8Ω Ta=25℃
0
100
200
300
400
500
600
0 1 2 3 4 5
Cb[uF]
Turn
on
time[
ms]
Fig7. Turn on time vs Cb (V+=5V) Fig.8 Turn on time vs Cb (V+=3V)
PSRR vs Frequency V+=5V RL=8Ω RIN=GND
0
10
20
30
40
50
60
70
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Frequency[Hz]
PS
RR
[dB
]
PSRR vs Frequency V+=3V RL=8Ω RIN=GND
0
10
20
30
40
50
60
70
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Frequency[Hz]
PSR
R[d
B]
Fig9. PSRR vs Frequency (V+=5V) Fig10. PSRR vs Frequency (V+=3V)
Cb=2.2uF
Cb=1uF
Cb=0.47uF
Cb=0.1uF
Cb=2.2uF
Cb=1uF
Cb=0.47uF
Cb=0.1uF
NJU7089
- 17 -
0
500
1000
1500
2000
2500
3000
3500
-50 0 50 100 150
Technical Information 6. Power dissipation and Output Power
Pd is the maximum permissible power at Ta=25°C.Pd is dependent on the ambient temperature, which shown in Fig.11.
*1 The PAD connecting to GND in the center part on the back. *2 The PAD connecting to GND in the center part on the back. Applying a thermal via hole to a board.
Fig11. Power derating curves
Ambient Temperature [°C]
Pac
kage
Pow
er D
issi
patio
n [m
W]
VSP8 (2layers) ESON8 (2layers *1)
VSP8 (4layers)
SSOP20 (2layers)
HTSSOP24 (2layers *1)
SSOP20 (4layers)
ESON8 (4layers *2)
HTSSOP24 (4layers *2)
NJU7089
- 18 -
Technical Information Maximum output power can be determined from Power dissipation vs Output Power characteristics
with PD (ABSOLUTE MAXIMUM RATINGS). An example is shown in Fig.12.
Power Dissipation vs Output Power[W]V+=5V Gv=6dB RL=8Ω Ta=25°C BTL
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0 0.2 0.4 0.6 0.8 1 1.2
Output Power[W]
Pow
er D
issi
patio
n[W
]
Fig12. Power dissipation vs Output Power
PD:VSP8 (4layers)
PD:VSP8 (2layers)
Maximum output power is restricted by PD.
Maximum output power is not restricted by PD.
Output Power Range
NJU7089
- 19 -
Technical Information 7. PCB layout In order to demonstrate the performance of IC, it is necessary to design a PCB appropriately. Power
line, GND line, and signal line should be drawn so that wiring resistance may become small. And please connect all the GND to the single point of Cv.
NJU7089 demo board layout pattern
Layer1(Top Layer)
NJU7089
- 20 -
Technical Information
Layer3(Power plane)
Layer2(Ground plane)
NJU7089
- 21 -
Technical Information
Layer4(Bottom Layer)
[CAUTION] The specifications on this databook are only
given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
NJU7089
- 22 -
■ TYPICAL CHARACTERISTICS
Supply Current vs TemperatureRL=OPEN, SD=V+
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
-50 -25 0 25 50 75 100 125 150
Temperature [˚C]
Sup
ply
Cur
rent
[mA
]
V+=5VV+=3.3V
V+=1.8V
Supply Current vs Supply VoltageRL=OPEN, SD=V+, Ta=25˚C
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0 1 2 3 4 5 6 7
Supply Voltage [V]S
uppl
y C
urre
nt[m
A]
Ta=25˚C
Ta=-40˚C
Ta=85˚C
Ta=105˚C
Supply Current vs Temperature [STANDBY]V+=5V, RL=OPEN, SD=0.25V
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
-50 0 50 100 150
Temperature [˚C]
Sup
ply
Cur
rent
[A]
VSD Terminal vs Supply CurrentV+=5V, RL=OPEN, Ta=25˚C
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
0 1 2 3 4 5
VSD Terminal [V]
Sup
ply
Cur
rent
[A]
Ta=105˚C
Ta=85˚C
Ta=25˚C
Ta=-40˚C
VSD Terminal vs Supply CurrentV+=3V, RL=OPEN
1.E-121.E-111.E-101.E-091.E-081.E-071.E-061.E-051.E-041.E-031.E-021.E-01
1.E+00
0 0.5 1 1.5 2 2.5 3
VSD Terminal [V]
Sup
ply
Cur
rent
[A]
Ta=-40˚C
Ta=85˚C
Ta=25˚C
Ta=105˚C
Supply Current vs Temperature [STANDBY]V+=3V, RL=OPEN, SD=0.25V
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
-50 0 50 100 150
Temperature [˚C]
Sup
ply
Cur
rent
[A]
NJU7089
- 23 -
■ TYPICAL CHARACTERISTICS
VSD Terminal vs Supply CurrentV+=1.8V, RL=OPEN
1.E-11
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
1.E-02
1.E-01
1.E+00
0 0.5 1 1.5 2
VSD Terminal [V]S
uppl
y C
urre
nt [A
]
Ta=-40˚C
Ta=85˚C
Ta=25˚C
Ta=105˚C
Supply Current vs Temperature [STANDBY]V+=1.8V, RL=OPEN, SD=0.25V
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
-50 0 50 100 150
Temperature [˚C]
Sup
ply
Cur
rent
[A]
Voltage Gain / Phase vs FrequencyV+=5V, Gv=40dB, RL=8Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=5V, Gv=40dB, RL=OPEN, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=5V, Gv=40dB, RL=4Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=3V, Gv=40dB, RL=8Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
NJU7089
- 24 -
■ TYPICAL CHARACTERISTICS
Voltage Gain / Phase vs FrequencyV+=3V, Gv=40dB, RL=OPEN, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]V
olta
ge G
ain[
dB]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=3V, Gv=40dB, RL=4Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs Frequency V+=1.8V, Gv=40dB, RL=OPEN, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=1.8V, Gv=40dB, RL=8Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
Voltage Gain / Phase vs FrequencyV+=1.8V, Gv=40dB, RL=4Ω, Ta=25˚C
-60
-40
-20
0
20
40
60
1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
Frequency [Hz]
Vol
tage
Gai
n[dB
]
-200
-150
-100
-50
0
50
100
150
200
Gain [dB]
Phase [˚]
NJU7089
- 25 -
■ TYPICAL CHARACTERISTICS
THD+N vs Output PowerV+=1.8V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1
Po[W]
THD
+N[%
]
100Hz
1kHz
20kHz
THD+N vs Output PowerV+=5V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
Po[W]
THD
+N[%
]
100Hz
1kHz
20kHz
THD+N vs Output PowerV+=3.3V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1
Po[W]
THD
+N[%
]
100Hz
1kHz
20kHz
THD+N vs Output Power V+=5V, Gv=6dB, RL=8Ω, f=1kHz, BW:10-80kHz
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
Po[W]TH
D+N
[%]
Ta=25˚C
Ta=85˚C Ta=105˚C
Ta=-40˚C
THD+N vs Output Power V+=1.8V, Gv=6dB, RL=8Ω, BW:10-80kHz
0.01
0.1
1
10
100
0.001 0.01 0.1 1
Po[W]
THD
+N[%
]
Ta=25˚C
Ta=85˚C Ta=105˚C
Ta=-40˚C
THD+N vs Output Power V+=3.3V, Gv=6dB, RL=8Ω, f=1kHz, BW:10-80kHz
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
Po[W]
THD
+N[%
]
Ta=25˚C
Ta=85˚C Ta=105˚C
Ta=-40˚C
NJU7089
- 26 -
■ TYPICAL CHARACTERISTICS
THD+N vs Output Power[differntial]V+=5V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
Po[W]
THD
+N [%
]
100Hz
1kHz
20kHz
THD+N vs Output Power[differntial]V+=3.3V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10
Po[W]TH
D+N
[%]
100Hz
1kHz
20kHz
THD+N vs Output Power[differntial]V+=1.8V, Gv=6dB, RL=8Ω, BW:10-80kHz, Ta=25˚C
0.01
0.1
1
10
100
0.001 0.01 0.1 1
Po[W]
THD
+N [%
]
100Hz
1kHz
20kHz
Output Power vs Supply VoltageRL=8Ω, THD=1%
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
0 1 2 3 4 5 6
Supply Voltage [V]
Out
put P
ower
[W] Ta=105, 85, 25, -40˚C
Output Power vs Supply VoltageRL=4Ω THD=1%
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 1 2 3 4 5 6
Supply Voltage [V]
Out
put P
ower
[W]
Ta=105, 85, 25, -40˚C
NJU7089
- 27 -
■ TYPICAL CHARACTERISTICS
Power Dissipation vs Output PowerV+=5V, Gv=6dB, RL=4Ω/8Ω, BTL
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 0.5 1 1.5 2
Output Power W]
Pow
er D
issi
patio
n [W
]
RL=4Ω
RL=8Ω
Power Dissipation vs Output PowerV+=3.3V, Gv=6dB, RL=4Ω/8Ω, BTL
0
0.1
0.2
0.3
0.4
0.5
0.6
0 0.25 0.5 0.75 1
Output Power [W]P
ower
Dis
sipa
tion
[W]
RL=4Ω
RL=8Ω
Power Dissipation vs Output Power V+=1.8V, Gv=6dB, RL=4Ω/8Ω, BTL
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
0 0.05 0.1 0.15 0.2 0.25
Output Power [W]
Pow
er D
issi
patio
n [W
]
RL=4Ω
RL=8Ω
PSRR vs Frequency V+=5V, RL=8Ω, RIN=GND
0
10
20
30
40
50
60
70
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05Frequency [Hz]
PS
RR
[dB
]
Ta=105, 85, 25, -40˚C
PSRR vs Frequency V+=3V, RL=8Ω, Vin=GND
0
10
20
30
40
50
60
70
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Frequency [Hz]
PS
RR
[dB
]
Ta=105, 85, 25, -40˚C
PSRR vs Frequency V+=1.8V, RL=8Ω, Vin=GND
0
10
20
30
40
50
60
70
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Frequency [Hz]
PS
RR
[dB
]
Ta=25, -40, 85, 105˚C
NJU7089
- 28 -
■ TYPICAL CHARACTERISTICS
Thermal Shutdow n Supply Current vs TemperatureV+=5V, RL=OPEN
0
0.5
1
1.5
2
2.5
3
3.5
4
130 150 170 190
Temperature [˚C]S
uppl
y C
urre
nt [m
A]
Thermal Shutdow n Supply Current vs TemperatureV+=3V, RL=OPEN
0
0.5
1
1.5
2
2.5
3
3.5
4
130 150 170 190
Temperature [˚C]
Sup
ply
Cur
rent
[mA
]
Thermal Shutdow n Supply Current vs TemperatureV+=1.8V, RL=OPEN
0
0.5
1
1.5
2
2.5
3
3.5
4
130 140 150 160 170 180 190
Temperature [˚C]
Sup
ply
Cur
rent
[mA
]
Turn On Time vs Bypass Capacitor V+=5V, Vin=1Vrms, f=1kHz, RL=8Ω, Ta=25˚C
0
100
200
300
400
500
600
0 1 2 3 4 5
Cb[uF]
Turn
On
Tim
e [m
s]
Turn On Time vs Bypass Capacitor V+=3V, Vin=0.5Vrms, f=1kHz, RL=8Ω, Ta=25˚C
0
100
200
300
400
500
600
0 1 2 3 4 5
Cb[uF]
Turn
On
Tim
e [m
s]
Turn On Time vs Bypass CapacitorV+=1.8V, Vin=0.5Vrms, f=1kHz, RL=8Ω, Ta=25˚C
0
100
200
300
400
500
600
0 1 2 3 4 5
Cb[uF]
Turn
On
Tim
e [m
s]
NJU7089
- 29 -
■ TYPICAL CHARACTERISTICS
Current Limit vs TemperatureV+=3V
-1.5
-1
-0.5
0
0.5
1
1.5
-40 0 40 80 120 160
Temperature [˚C]
Cur
rent
Lim
it [A
]
OUTAsink, OUTBsink
OUTAsource, OUTBsource
Current Limit vs Temperature V+=5V
-1.5
-1
-0.5
0
0.5
1
1.5
-40 0 40 80 120 160
Temperature [˚C]C
urre
nt L
imit
[A]
OUTAsink, OUTBsink
OUTAsource, OUTBsource
Current Limit vs TemperatureV+=1.8V
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-40 0 40 80 120 160
Temperature [˚C]
Cur
rent
Lim
it [A
]
OUTAsink, OUTBsink
OUTAsource, OUTBsource
Output Voltager vs Output Current V+=5V
0
1
2
3
4
5
6
0 100 200 300 400 500 600
Output Current [mA]
Out
put V
olta
ge [V
]
Ta=-40, 25, 85, 105˚C
Ta=-40, 25, 85, 105˚C
Output Voltager vs Output CurrentV+=3V
0
1
2
3
4
0 100 200 300 400 500
Output Current [mA]
Out
put V
olta
ge [V
]
Ta=-40, 25, 85, 105˚C
Ta=-40, 25, 85, 105˚C
Output Voltager vs Output Current V+=1.8V
0
0.5
1
1.5
2
2.5
0 100 200 300
Output Current [mA]
Out
put V
olta
ge [V
]
Ta=-40, 25, 85, 105˚C
Ta=-40, 25, 85, 105˚C
NJU7089
- 30 -
[CAUTION] The specifications on this databook are only
given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.