Philips tda8712 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA8712; TDF8712

8-bit digital-to-analog converters

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

Philips Semiconductors

June 1994

Philips Semiconductors Product specification

8-bit digital-to-analog converters TDA8712; TDF8712

FEATURES

• 8-bit resolution

• Conversion rate up to 50 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 Ω output load (connected to the analog

supply)

• Very few external components required

• Temperature range

– TDA8712: 0 to 70 °C
– TDF8712: −40 to +85 °C.

ORDERING INFORMATION

TYPE NUMBER

PINS PIN POSITION MATERIAL CODE

TDA8712 16 DIP plastic SOT38-1

TDF8712 16 DIP plastic SOT38-1
TDA8712T 16 SO16L plastic SOT162-1
TDF8712T 16 SO16L plastic SOT162-1

APPLICATIONS

• High-speed digital-to-analog conversion

• Digital TV including:

– field progressive scan
– line progressive scan

• Subscriber TV decoders

• Satellite TV decoders

• Digital VCRs

• Industrial and automotive.

GENERAL DESCRIPTION

The TDA8712 and TDF8712 are 8-bit digital-to-analog
converters (DACs) for video and other applications. They
convert the digital input signal into an analog voltage
output at a maximum conversion rate of 50 MHz. No
external reference voltage is required and all digital inputs
are TTL compatible.

PACKAGE

June 1994 2

Philips Semiconductors Product specification

8-bit digital-to-analog converters TDA8712; TDF8712

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CCA

V

CCD

I

CCA

I

CCD

∆V

OUT(p-p)

ILE DC integral linear error −±0.3 ±0.5 LSB
DLE DC differential linearity error −±0.3 ±0.5 LSB
f

clk(max)

B −3 dB analog bandwidth f
P

tot

analog supply voltage

TDA8712 4.5 5.0 5.5 V
TDF8712 4.75 5.0 5.25 V

digital supply voltage

TDA8712 4.5 5.0 5.5 V

TDF8712 4.75 5.0 5.25 V
analog supply current note 1 20 26 32 mA
digital supply current note 1 16 23 30 mA
full-scale analog output voltage

differences between V
V

(peak-to-peak value)

OUT

OUT

and

ZL = 10 kΩ; note 2 −1.45 −1.60 −1.75 V

= 75 Ω; note 2 −0.72 0.80 −0.88 V

Z

L

maximum conversion rate 50 −−MHz

= 50 MHz; note 3 − 150 − MHz

clk

total power dissipation

TDA8712 160 250 340 mW

TDF8712 170 250 325 mW

Notes

1. D0 to D7 are connected to V

2. The analog output voltages (V
between V

and each of these outputs is typically 75 Ω.

CCA

and CLK is 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).

June 1994 3

Philips Semiconductors Product specification

8-bit digital-to-analog converters TDA8712; TDF8712

BLOCK DIAGRAM

handbook, full pagewidth

REF

100 nF

DGND
AGND

(LSB) D0

(MSB) D7

CLK

D1
D2
D3
D4
D5
D6

1

BAND-GAP

REFERENCE

6
2

5

CLOCK INPUT

INTERFACE

TDA8712
TDF8712

12
11
3
4
10
9
8
7

CURRENT

REFERENCE

LOOP

CURRENT

GENERATORS

CURRENT

SWITCHES

REGISTERS

DATA

INPUT

INTERFACE

16

V

CCA

75

75

Ω

Ω

15

V
V

V

OUT
OUT

CCD

14

Fig.1 Block diagram.

June 1994 4

MBC915 - 1

Philips Semiconductors Product specification

8-bit digital-to-analog converters TDA8712; TDF8712

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 (MSB)
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 (LSB)
V
V
V
V

CCD
OUT
OUT
CCA

13 digital supply voltage (+5 V)
14 analog output voltage
15 complimentary analog output voltage
16 analog supply voltage (+5 V)

handbook, halfpage

1

REF

2

AGND

D2

3

D3

4
5
6
7
8

TDA8712
TDF8712

MBC901 - 1

CLK

DGND

D7

D6

Fig.2 Pin configuration.

V

16

CCA

V

15

OUT

V

14

OUT

V

13

CCD

D0

12

D1

11

D4

10

D5

9

June 1994 5

Philips Semiconductors Product specification

8-bit digital-to-analog converters TDA8712; TDF8712

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC134).

SYMBOL PARAMETER MIN. MAX. UNIT

V
V

∆V
∆V

V
I

tot

T
T

T

CCA
CCD

CC
GND

I

stg
amb

j

analog supply voltage −0.3 +7.0 V
digital supply voltage −0.3 +7.0 V
supply voltage differences between V
ground voltage differences between V
input voltage (pins 3 to 5 and 7 to 12) −0.3 V
total output current (I

OUT

+ I

; pins 14 and 15) −5 +26 mA

OUT

CCA

AGND

and V

and V

CCD

−0.5 +0.5 V

−0.1 +0.1 V

DGND

CCD

V

storage temperature −55 +150 °C
operating ambient temperature

TDA8712 0 +70 °C
TDF8712 −40 +85 °C

junction temperature − +150 °C

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 CHARACTERISTICS

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air

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

June 1994 6