Datasheet

Clamp
PGA
11-Bit
ADC
CH4 A/D
PGA
CH1 A/D
PGA
CH2 A/D
PGA
CH3 A/D
Line-Locked
Sampling Clock
TVP5146M2 Analog Front End
VI_4_A
M
U
X
VI_1_A
VI_1_B
VI_1_C
M
U
X
VI_2_A
VI_2_B
VI_2_C
M
U
X
VI_3_A
VI_3_B
VI_3_C
11-Bit
ADC
11-Bit
ADC
11-Bit
ADC
Clamp
Clamp
Clamp
TVP5146M2
SLES141H –JULY 2005– REVISED FEBRUARY 2012 www.ti.com
2 Functional Description
2.1 Analog Processing and A/D Converters
Figure 2-1 shows a functional diagram of the analog processors and ADCs. This block provides the
analog interface to all video inputs. It accepts up to ten inputs and performs source selection, video
clamping, video amplification, A/D conversion, and gain and offset adjustments to center the digitized
video signal.
Figure 2-1. Analog Processors and A/D Converters
16 Functional Description Copyright © 2005–2012, Texas Instruments Incorporated
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