INTEGRATED CIRCUITS
DATA SHEET
TDA8771A
Triple 8-bit video Digital-to-Analog
Converter (DAC)
Product specification
File under Integrated Circuits, IC02
1996 Jan 25
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog
Converter (DAC)
FEATURES
•
8-bit resolution
•
Sampling rate up to 35 MHz
•
Internal reference voltage regulator
•
No deglitching circuit required
•
Large output voltage range
•
1 kΩ output load
•
Power dissipation only 200 mW
•
Single 5 V power supply
•
44-pin QFP package.
APPLICATIONS
•
General purpose high-speed digital-to-analog
conversion
•
Digital TV
•
Graphic display
•
Desktop video processing.
QUICK REFERENCE DATA
SYMBOL
V
DDA
V
DDD
I
DDA
I
DDD
INL
DNL
f
clk(max)
P
tot
Note
PARAMETER
analog supply voltage
digital supply voltage
analog supply current
digital supply current
integral non-linearity
differential non-linearity
maximum clock frequency
total power dissipation
R
L
= 1 kΩ; note 1
f
clk
= 35 MHz
f
clk
= 35 MHz; ramp input
f
clk
= 35 MHz; ramp input
CONDITIONS
MIN.
4.5
4.5
10
−
−
−
35
R
L
= 1 kΩ; f
clk
= 35 MHz; note 1 45
TYP.
5.0
5.0
33
7
±0.5
±0.25
−
200
GENERAL DESCRIPTION
TDA8771A
The TDA8771A is a triple 8-bit video Digital-to-Analog
Converter (DAC). It converts the digital input signals into
analog voltage outputs at a maximum conversion rate of
35 MHz.
The DACs are based on resistor-string architecture with
integrated output buffers. The output voltage range is
determined by a built-in reference source.
The device is fabricated in a 5 V, CMOS process that
ensures high functionality with low power dissipation.
MAX.
5.5
5.5
45
20
±1
±0.5
−
360
UNIT
V
V
mA
mA
LSB
LSB
MHz
mW
1. Minimum and maximum data of current and power consumption are measured in worse case conditions: for
minimum data, all digital inputs are at logic level 0 while for maximum data, all digital inputs are at logic level 1.
ORDERING INFORMATION
TYPE
NUMBER
TDA8771AH
PACKAGE
NAME
DESCRIPTION
VERSION
SOT307-2
QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10
×
10
×
1.75 mm
1996 Jan 25
2
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog
Converter (DAC)
BLOCK DIAGRAM
handbook, full pagewidth
TDA8771A
V DDA
32,35,39,43
4
12 to 9
V DDD
7,27
4
clock input
31
1
reference
current input
(I REF )
RED
digital inputs
(bits R0 to R3)
TDA8771A
LSB
DECODER
RED
digital inputs
(bits R4 to R7)
4
8
5 to 3
4
MSB
DECODER
RESISTOR
STRING
44
RED
analog output
GREEN
digital inputs
(bits G0 to G3)
4
20 to 17
4
LSB
DECODER
GREEN
digital inputs
(bits G4 to G7)
4
16 to 13
4
MSB
DECODER
RESISTOR
STRING
40
GREEN
analog output
BLUE
digital inputs
(bits B0 to B3)
4
30,29
26,25
4
LSB
DECODER
BLUE
digital inputs
(bits B4 to B7)
4
24 to 21
4
MSB
DECODER
RESISTOR
STRING
36
BLUE
analog output
BANDGAP
REFERENCE
34, 37, 38,41
not
connected
33
reference voltage
decoupling input
(VREF )
2,42
6,28
MBH039
V SSA
V SSD
Fig.1 Block diagram.
1996 Jan 25
3
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog
Converter (DAC)
PINNING
SYMBOL
I
REF
V
SSA1
R7
R6
R5
V
SSD1
V
DDD1
R4
R3
R2
R1
R0
G7
G6
G5
G4
G3
G2
G1
G0
B7
B6
B5
B4
B3
B2
V
DDD2
V
SSD2
B1
B0
CLK
V
DDA1
V
REF
n.c.
V
DDA2
OUTB
n.c.
n.c.
V
DDA3
OUTG
1996 Jan 25
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
analog supply ground 1
RED digital input data; bit 7 (MSB)
RED digital input data; bit 6
RED digital input data; bit 5
digital supply ground 1
digital supply voltage 1
RED digital input data; bit 4
RED digital input data; bit 3
RED digital input data; bit 2
RED digital input data; bit 1
RED digital input data; bit 0 (LSB)
GREEN digital input data; bit 7 (MSB)
GREEN digital input data; bit 6
GREEN digital input data; bit 5
GREEN digital input data; bit 4
GREEN digital input data; bit 3
GREEN digital input data; bit 2
GREEN digital input data; bit 1
GREEN digital input data; bit 0 (LSB)
BLUE digital input data; bit 7 (MSB)
BLUE digital input data; bit 6
BLUE digital input data; bit 5
BLUE digital input data; bit 4
BLUE digital input data; bit 3
BLUE digital input data; bit 2
digital supply voltage 2
digital supply ground 2
BLUE digital input data; bit 1
BLUE digital input data; bit 0 (LSB)
clock input
analog supply voltage 1
decoupling input for reference voltage
not connected
analog supply voltage 2
BLUE analog output
not connected
not connected
analog supply voltage 3
GREEN analog output
4
DESCRIPTION
reference current input for output buffers
TDA8771A
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog
Converter (DAC)
SYMBOL
n.c.
V
SSA2
V
DDA4
OUTR
PIN
41
42
43
44
not connected
analog supply ground 2
analog supply voltage 4
RED analog output
DESCRIPTION
TDA8771A
43 V DDA4
35 V DDA2
42 VSSA2
OUTR
OUTG
37 n.c.
41 n.c.
38 n.c.
OUTB
handbook, full pagewidth
V DDA3
index
corner
I REF
V SSA1
R7
R6
R5
V SSD1
VDDD1
R4
R3
1
2
3
4
5
6
7
8
9
34 n.c.
44
40
39
36
33 V REF
32 V DDA1
31
CLK
30 B0
29 B1
TDA8771A
28 VSSD2
27 V DDD2
26 B2
25 B3
24 B4
23
B5
R2 10
R1 11
G0 20
B7 21
R0 12
G7 13
G6 14
G5 15
B6 22
G4 16
G3 17
G2 18
G1 19
MBH040
Fig.2 Pin configuration.
1996 Jan 25
5
ADI 工业技术
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
