Philips tda8706a DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA8706A

6-bit analog-to-digital converter
with multiplexer and clamp

Product specification
File under Integrated Circuits, IC02

1996 Jul 30

Philips Semiconductors Product specification

6-bit analog-to-digital converter

TDA8706A

with multiplexer and clamp

FEATURES

• 6-bit resolution

• Binary 3-state CMOS outputs

• CMOS compatible digital inputs

• 3 multiplexed video inputs

• R, G and B clamps on code 0

• Single 6-bit ADC operation allowed up to 40 MSPS

• External control of clamping level

• Internal reference voltage (external reference allowed)

• Power dissipation only 36 mW (typical)

• Operating temperature of −40 to +85 °C

• Operating between 2.7 and 5.5 V.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

DDA

V

DDD

V

DDO

I

DDA

I

DDD

I

DDO

INL integral non-linearity f

DNL differential non-linearity f

f

clk(max)

P

tot

analog supply voltage 2.7 3.0 5.5 V
digital supply voltage 2.7 3.0 5.5 V
output stages supply voltage 2.7 3.0 5.5 V
analog supply current − 710mA
digital supply current − 46mA
output stages supply current f

= 40 MHz; ramp input − 1 1.5 mA

clk

= 40 MHz; ramp input;

clk

T

amb

= 40 MHz; ramp input;

clk

T

amb

maximum clock frequency 40 −−MHz
total power dissipation f

= 40 MHz; ramp input

clk

3 V supplies − 36 − mW

5.5 V supplies −−96 mW

APPLICATIONS

• General purpose video applications

• R, G and B signals

• Automotive (car navigation)

• LCD systems

• Frame grabber.

GENERAL DESCRIPTION

The TDA8706A is a 6-bit analog-to-digital converter (ADC)
with 3 analog multiplexed inputs. Each input has an analog
clamp on code 0 for RGB video processing. Clamping
level can also be adjusted externally up to code 20. It can
also be used as a single 6-bit ADC.

−±0.25 ±0.6 LSB

=25°C

−±0.20 ±0.5 LSB

=25°C

ORDERING INFORMATION

TYPE

NUMBER

TDA8706AM SSOP24 plastic shrink small outline package; 24 leads; body width 5.3 mm SOT340-1

1996 Jul 30 2

PACKAGE

NAME DESCRIPTION VERSION

Philips Semiconductors Product specification

6-bit analog-to-digital converter
with multiplexer and clamp

BLOCK DIAGRAM

V

CLPR

handbook, full pagewidth

4

CLP

8

RED

GREEN

9

V

CLPB

CLAMP

V

CLPG

131211

MULTIPLEXER

CLK

6-BIT

ADC

TDA8706A

24

20 D5

19 D4

CMOS

OUTPUTS

18 D3

17 D2

16 D1

digital
voltage
outputs

BLUE

V

SSD

10

TDA8706A

22

V

DDOVDDAVDDD

15

D0

V

DDA

521

23

123 6 7

SR SG SB

select
inputs

REGULATOR

V

RB

V

SSA

V

SSO

14

MGD133

Fig.1 Block diagram.

1996 Jul 30 3

Philips Semiconductors Product specification

6-bit analog-to-digital converter
with multiplexer and clamp

PINNING

SYMBOL PIN DESCRIPTION

SR 1 select input RED
SG 2 select input GREEN
SB 3 select input BLUE
CLP 4 clamping pulse input (positive pulse)
V

DDA

V

RB

V

SSA

RED 8 RED input
GREEN 9 GREEN input
BLUE 10 BLUE input
V

CLPR

V

CLPB

V

CLPG

V

SSO

D0 15 digital voltage output; bit 0 (LSB)
D1 16 digital voltage output; bit 1
D2 17 digital voltage output; bit 2
D3 18 digital voltage output; bit 3
D4 19 digital voltage output; bit 4
D5 20 digital voltage output; bit 5
V

DDO

V

SSD

V

DDD

CLK 24 clock input

5 analog supply voltage
6 reference voltage BOTTOM input
7 analog ground

11 RED clamping voltage level input
12 BLUE clamping voltage level input
13 GREEN clamping voltage level input
14 digital output ground

21 supply voltage for output stage
22 digital ground
23 digital supply voltage

handbook, halfpage

1

SR

2

SG

3

SB

4

CLP

5

V

DDA

6

V

RB

V

SSA

RED

GREEN

BLUE

V

CLPR

V

CLPB

TDA8706A

7
8

9
10
11
12

MGD132

Fig.2 Pin configuration.

TDA8706A

24 CLK
23

V

DDD

22

V

SSD

21

V

DDO

20

D5

19

D4

18

D3

17

D2

16

D1

15

D0

14

V

SSO

13

V

CLPG

1996 Jul 30 4

Philips Semiconductors Product specification

6-bit analog-to-digital converter

TDA8706A

with multiplexer and clamp

LIMITING VALUES

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

SYMBOL PARAMETER MIN. MAX. UNIT

V

DDA

V

DDD

∆V

DD

V

I

I

O

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 difference

V
V
V

DDA
DDA
DDD

− V

− V

− V

DDD
DDO
DDO

−1.0 +1.0 V

−1.0 +1.0 V

−1.0 +1.0 V

input voltage −0.3 +7.0 V
output current − 10 mA
storage temperature −55 +150 °C
operating ambient temperature −40 +85 °C
junction temperature − +150 °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 CHARACTERISTICS

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air 119 K/W

1996 Jul 30 5