DATA SHEET
Product specification
Supersedes data of April 1993
File under Integrated Circuits, IC02
1996 Aug 23
INTEGRATED CIRCUITS
TDA8702
8-bit video digital-to-analog
converter
1996 Aug 23
2
Philips Semiconductors
Product specification
8-bit video digital-to-analog converter
TDA8702
FEATURES
8-bit resolution
Conversion rate up to 30 MHz
TTL input levels
Internal reference voltage generator
Two complementary analog voltage outputs
No deglitching circuit required
Internal input register
Low power dissipation
Internal 75
output load (connected to the analog
supply)
Very few external components required.
APPLICATIONS
High-speed digital-to-analog conversion
Digital TV including:
field progressive scan
line progressive scan
Subscriber TV decoders
Satellite TV decoders
Digital VCRs.
GENERAL DESCRIPTION
The TDA8702 is an 8-bit Digital-to-Analog Converter
(DAC) for video and other applications. It converts the
digital input signal into an analog voltage output at a
maximum conversion rate of 30 MHz. No external
reference voltage is required and all digital inputs are TTL
compatible.
QUICK REFERENCE DATA
Note
1. D0 to D7 connected to V
CCD
and CLK connected to DGND.
2. The analog output voltages (V
OUT
and V
OUT
) are negative with respect to V
CCA
(see Table 1). The output resistance
between V
CCA
and each of these outputs is typically 75
.
3. The
-
3 dB analog output bandwidth is determined by real time analysis of the output transient at a maximum input
code transition (code 0 to 255).
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
CCA
analog supply voltage
4.5
5.0
5.5
V
V
CCD
digital supply voltage
4.5
5.0
5.5
V
I
CCA
analog supply current
note 1
-
26
32
mA
I
CCD
digital supply current
note 1
-
23
30
mA
V
OUT
-
V
OUT
full-scale analog output voltage
(peak-to-peak value)
note 2
Z
L
= 10 k
-
1.45
-
1.60
-
1.75
V
Z
L
= 75 k
-
0.72
-
0.80
-
0.88
V
ILE
DC integral linearity error
-
-
1/2
LSB
DLE
DC differential linearity error
-
-
1/2
LSB
f
CLK
maximum conversion rate
-
-
30
MHz
B
-
3 dB analog bandwidth
f
CLK
= 30 MHz; note 3
-
150
-
MHz
P
tot
total power dissipation
-
250
340
mW
1996 Aug 23
3
Philips Semiconductors
Product specification
8-bit video digital-to-analog converter
TDA8702
ORDERING INFORMATION
BLOCK DIAGRAM
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8702
DIP16
plastic dual in-line package; 16 leads (300 mil); long body
SOT38-1
TDA8702T
SO16
plastic small outline package; 16 leads; body width 7.5 mm
SOT162-1
Fig.1 Block diagram.
handbook, full pagewidth
BAND-GAP
REFERENCE
CURRENT
REFERENCE
LOOP
CURRENT
GENERATORS
CURRENT
SWITCHES
REGISTERS
CLOCK INPUT
INTERFACE
MSA659
DATA
INPUT
INTERFACE
12
11
3
4
10
9
8
7
5
1
2
6
REF
100 nF
DGND
AGND
CLK
(LSB) D0
D1
D2
D3
D4
D5
D6
(MSB) D7
75
75
16
15
14
VCCA
VOUT
VOUT
VCCD
TDA8702/
TDA8702T
13
1996 Aug 23
4
Philips Semiconductors
Product specification
8-bit video digital-to-analog converter
TDA8702
PINNING
SYMBOL PIN
DESCRIPTION
REF
1
voltage reference (decoupling)
AGND
2
analog ground
D2
3
data input; bit 2
D3
4
data input; bit 3
CLK
5
clock input
DGND
6
digital ground
D7
7
data input; bit 7
D6
8
data input; bit 6
D5
9
data input; bit 5
D4
10
data input; bit 4
D1
11
data input; bit 1
D0
12
data input; bit 0
V
CCD
13
positive supply voltage for digital
circuits (+5 V)
V
OUT
14
analog voltage output
V
OUT
15
complementary analog voltage output
V
CCA
16
positive supply voltage for analog
circuits (+5 V)
Fig.2 Pin configuration.
handbook, halfpage
MSA658
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TDA8702/
TDA8702T
V CCA
V OUT
V OUT
VCCD
D0
D1
D4
D5
D6
D7
D3
D2
DGND
CLK
AGND
REF
1996 Aug 23
5
Philips Semiconductors
Product specification
8-bit video digital-to-analog converter
TDA8702
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
HANDLING
Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling integrated circuits.
THERMAL RESISTANCE
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
CCA
analog supply voltage
-
0.3
+7.0
V
V
CCD
digital supply voltage
-
0.3
+7.0
V
V
CCA
-
V
CCD
supply voltage differential
-
0.5
+0.5
V
AGND
-
DGND
ground voltage differential
-
0.1
+0.1
V
V
I
input voltage (pins 3 to 5 and 7 to 12)
-
0.3
V
CCD
V
I
OUT
/I
OUT
total output current (pins 14 and 15)
-
5
+26
mA
T
stg
storage temperature
-
55
+150
C
T
amb
operating ambient temperature
0
+70
C
T
j
junction temperature
-
+125
C
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
from junction to ambient in free air
SOT38-1
70
K/W
SOT162-1
90
K/W
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