what is lvds? · 2020. 12. 21. · lvds architecture v od = v + - v-cable or pcb trace stub. ti...
TRANSCRIPT
TI Information – Selective DisclosureTI Information – Selective Disclosure
What is LVDS?TI Precision Labs – LVDS interface
Prepared by Ikechukwu Anyiam
Presented by Nicholaus Malone
1
TI Information – Selective Disclosure 2
LVDS applications
TI Information – Selective Disclosure 3
Driver Receiver
VSignal VSignal
GND
V+
V-
I+
I-
LVDS architecture
Cable or PCB trace
TI Information – Selective Disclosure 4
Driver Receiver
VSignal VSignal
GND
V+
V-
I+
I- 100Ω
LVDS architecture
VOD = V+ - V-
Cable or PCB trace
Stub
TI Information – Selective Disclosure 5
Driver Receiver
VSignal VSignal
GND
V+
V-
I+
I-
VOD = V+ - V-
VCM = 1.2V
LVDS architecture
Cable or PCB trace
100Ω
Stub
TI Information – Selective Disclosure
DP main link signaling characteristic
6
Source Sink
TI Information – Selective Disclosure
LVDS signal interface
7
Push-pull
current mode
driver
TI Information – Selective Disclosure
LVDS signal interface
8
350 mV
TI Information – Selective Disclosure
LVDS electromagnetic interference (EMI) immunity
9
V+ - V-
V+
V-
TI Information – Selective Disclosure
Power consumption and dissipation
10
TI Information – Selective Disclosure
How far and how fast can LVDS signals travel?
11
TI Information – Selective Disclosure
Determining max data rate and distance
12
• Take eye pattern measurements at the load to evaluate jitter tolerance
TI Information – Selective Disclosure
Thank you
13
• TI Precision Labs - What is DisplayPort (DP)?
• TI Precision Labs - What is an Eye Diagram?
TI Information – Selective Disclosure