TDA8777_3

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

Preliminary data sheet

Rev. 03 — 15 August 2005

5 of 18

Philips Semiconductors

TDA8777

Triple 10-bit video DAC, up to 330 MHz sample frequency

8.

Functional description

This triple 10-bit video DAC is designed to convert digital input signals into analog output

currents. All inputs (clock, data, blank and sync) must be TLL levels.

8.1 Voltage reference

The voltage reference input to pin VREF should be 1.21 V. For correct operation, a 100 nF

B3

17

blue digital input data; bit 3

B4

18

blue digital input data; bit 4

B5

19

blue digital input data; bit 5

B6

20

blue digital input data; bit 6

B7

21

blue digital input data; bit 7

B8

22

blue digital input data; bit 8

B9

23

blue digital input data; bit 9 (MSB)

CLK

24

clock input

25

analog supply ground 1

26

analog supply ground 2

OUTB

27

complementary blue current analog output

OUTB

28

blue current analog output

29

analog supply voltage 2

30

analog supply voltage 3

OUTG

31

complementary green current analog output

OUTG

32

green current analog output

OUTR

33

complementary red current analog output

OUTR

34

red current analog output

COMP

35

compliance voltage output

VREF

36

voltage reference input

RSET

37

full-scale current control resistor pin

PSAVE

38

power-save control input (active LOW)

R0

39

red digital input data; bit 0 (LSB)

R1

40

red digital input data; bit 1

R2

41

red digital input data; bit 2

R3

42

red digital input data; bit 3

R4

43

red digital input data; bit 4

R5

44

red digital input data; bit 5

R6

45

red digital input data; bit 6

R7

46

red digital input data; bit 7

R8

47

red digital input data; bit 8

R9

48

red digital input data; bit 9 (MSB)

Table 3:

Symbol

Pin

Description