TDA8771A Datasheet, PDF (3/20 Pages) NXP Semiconductors – Triple 8-bit video Digital-to-Analog Converter DAC

Philips Semiconductors
Triple 8-bit video Digital-to-Analog
Converter (DAC)
BLOCK DIAGRAM
handbook, full pagewidth
RED
4 _{12 to 9}
digital inputs
(bits R0 to R3)
V _DDA
V _DDD
32,35,39,43
7,27
4
clock input
31
TDA8771A
LSB
DECODER
Product specification
TDA8771A
1
reference
current input
(IREF )
RED
digital inputs
(bits R4 to R7)
48
5 to 3
4
MSB
DECODER
RESISTOR
STRING
GREEN
digital inputs
4 _{20 to 17}
(bits G0 to G3)
4
LSB
DECODER
44
RED
analog output
GREEN
digital inputs
4 _{16 to 13}
(bits G4 to G7)
4
MSB
DECODER
RESISTOR
STRING
BLUE
digital inputs
(bits B0 to B3)
4 30,29
26,25
4
LSB
DECODER
40
GREEN
analog output
BLUE
digital inputs
(bits B4 to B7)
4 24 to 21
4
MSB
DECODER
RESISTOR
STRING
36
BLUE
analog output
1996 Jan 25
34, 37, 38,41
BANDGAP
REFERENCE
33
2,42 6,28
not
connected
reference voltage
decoupling input
(VREF )
V _SSA
V _SSD
Fig.1 Block diagram.
MBH039
3