Philips TDA8702T, TDA8702 Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA8702

8-bit video digital-to-analog
converter

Product specification
Supersedes data of April 1993
File under Integrated Circuits, IC02

1996 Aug 23

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

APPLICATIONS

• High-speed digital-to-analog conversion

• Digital TV including:

– field progressive scan
– line progressive scan

• Subscriber TV decoders

• Satellite TV decoders

• Digital VCRs.

• Low power dissipation

• Internal 75 Ω output load (connected to the analog

supply)

• Very few external components required.

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

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
V
I

CCA

I

CCD

V

CCA
CCD

OUT

− V

analog supply voltage 4.5 5.0 5.5 V
digital supply voltage 4.5 5.0 5.5 V
analog supply current note 1 − 26 32 mA
digital supply current note 1 − 23 30 mA
full-scale analog output voltage

OUT

(peak-to-peak value)

note 2

=10kΩ−1.45 −1.60 −1.75 V

Z

L

=75kΩ−0.72 −0.80 −0.88 V

Z

L

ILE DC integral linearity error −−±1/2 LSB
DLE DC differential linearity error −−±1/2 LSB
f

CLK

B −3 dB analog bandwidth f
P

tot

maximum conversion rate −−30 MHz

= 30 MHz; note 3 − 150 − MHz

CLK

total power dissipation − 250 340 mW

Note

1. D0 to D7 connected to V

2. The analog output voltages (V
between V

and each of these outputs is typically 75 Ω.

CCA

and CLK connected to DGND.

CCD

OUT

and V

) are negative with respect to V

OUT

(see Table 1). The output resistance

CCA

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).

1996 Aug 23 2

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

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

BLOCK DIAGRAM

CLK



1

REFERENCE

6
2

5

CLOCK INPUT

INTERFACE

BAND-GAP

CURRENT

REFERENCE

LOOP

CURRENT

GENERATORS

CURRENT

SWITCHES

16

V

CCA

75

75

Ω

Ω

15

V
V

OUT
OUT

14

handbook, full pagewidth

REF

100 nF

DGND
AGND

TDA8702/

TDA8702T

D1
D2
D3
D4
D5
D6

12
11
3
4
10
9
8
7

(LSB) D0

(MSB) D7

Fig.1 Block diagram.

1996 Aug 23 3

REGISTERS

DATA

INPUT

INTERFACE

13

MSA659

V

CCD

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
V
V

OUT
OUT
CCA

14 analog voltage output
15 complementary analog voltage output
16 positive supply voltage for analog

circuits (+5 V)

handbook, halfpage

1

REF

2

AGND

D2

3
4

D3

CLK

DGND

D7

D6

TDA8702/

TDA8702T

5
6
7
8

MSA658

Fig.2 Pin configuration.

V

16

CCA

V

15

OUT

V

14

OUT

V

13

CCD

D0

12

D1

11

D4

10

D5

9

1996 Aug 23 4

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

V

CCA

V

CCD

− V

V

CCA

CCD

AGND − DGND ground voltage differential −0.1 +0.1 V
V

I

I

OUT/IOUT

T

stg

T

amb

T

j

HANDLING

analog supply voltage −0.3 +7.0 V
digital supply voltage −0.3 +7.0 V
supply voltage differential −0.5 +0.5 V

input voltage (pins 3 to 5 and 7 to 12) −0.3 V

CCD

V
total output current (pins 14 and 15) −5 +26 mA
storage temperature −55 +150 °C
operating ambient temperature 0 +70 °C
junction temperature − +125 °C

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 VALUE UNIT

R

th j-a

from junction to ambient in free air

SOT38-1 70 K/W
SOT162-1 90 K/W

1996 Aug 23 5

Philips Semiconductors Product specification

8-bit video digital-to-analog converter TDA8702

CHARACTERISTICS

V

CCA=V16

AGND by a 100 nF capacitor; T
(typical values measured at V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

CCA

V

CCD

I

CCA

I

CCD

AGND − DGND ground voltage differential −0.1 − +0.1 V

Inputs

IGITAL INPUTS (D7 TO D0) AND CLOCK INPUT (CLK)

D
V

IL

V

IH

I

IL

I

IH

f

CLK

Outputs (note 2; referenced to V
V

OUT

V

OS

V

OUT

V

OS

B −3 dB analog bandwidth note 3; f
G

diff

Φ

diff

Z

O

Transfer function (f

ILE DC integral linearity error −−±1/2 LSB
DLE DC differential linearity error −−±1/2 LSB

− V2= 4.5 V to 5.5 V; V

amb

CCA=VCCD

CCD=V13

=0°C to +70 °C; AGND and DGND shorted together; unless otherwise specified

− V6= 4.5 V to 5.5 V; V

= 5 V and T

analog supply voltage 4.5 5.0 5.5 V
digital supply voltage 4.5 5.0 5.5 V
analog supply current note 1 − 26 32 mA
digital supply current note 1 − 23 30 mA

LOW level input voltage 0 − 0.8 V
HIGH level input voltage 2.0 − V
LOW level input current VI= 0.4 V −−0.3 −0.4 mA
HIGH level input current VI= 2.7 V − 0.01 20 µA
maximum clock frequency −−30 MHz

)

CCA

− V

OUT

full-scale analog output voltages
(peak-to-peak value)

analog offset output voltage code = 0 −−3−25 mV

/TC full-scale analog output voltage

temperature coefficient

/TC analog offset output voltage

temperature coefficient

differential gain − 0.6 − %
differential phase − 1 − deg
output impedance − 75 −Ω

= 30 MHz)

CLK

amb

=25°C).

CCA

− V

= −0.5 V to +0.5 V; V

CCD

REF

ZL=10kΩ−1.45 −1.60 −1.75 V

=75Ω−0.72 −0.80 −0.88 V

Z

L

−−200 µV/K

−−20 µV/K

= 30 MHz − 150 − MHz

CLK

decoupled to

V

CCD

1996 Aug 23 6