Philips tda8706a DATASHEETS

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INTEGRATED CIRCUITS

TDA8706A

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

Product specification			1996 Jul 30
File under Integrated Circuits, IC02

www.freeservicemanuals.info

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.

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.

QUICK REFERENCE DATA

SYMBOL	PARAMETER		CONDITIONS	MIN.	TYP.	MAX.	UNIT
VDDA	analog supply voltage			2.7	3.0	5.5	V
VDDD	digital supply voltage			2.7	3.0	5.5	V
VDDO	output stages supply voltage			2.7	3.0	5.5	V
IDDA	analog supply current			−	7	10	mA
IDDD	digital supply current			−	4	6	mA
IDDO	output stages supply current		fclk = 40 MHz; ramp input	−	1	1.5	mA
INL	integral non-linearity		fclk = 40 MHz; ramp input;	−	±0.25	±0.6	LSB
			Tamb = 25 °C
DNL	differential non-linearity		fclk = 40 MHz; ramp input;	−	±0.20	±0.5	LSB
			Tamb = 25 °C
fclk(max)	maximum clock frequency			40	−	−	MHz
Ptot	total power dissipation		fclk = 40 MHz; ramp input
			3 V supplies	−	36	−	mW
			5.5 V supplies	−	−	96	mW
ORDERING INFORMATION
TYPE			PACKAGE
NUMBER	NAME		DESCRIPTION			VERSION
TDA8706AM	SSOP24	plastic shrink small outline package; 24 leads; body width 5.3 mm				SOT340-1

1996 Jul 30

2

www.freeservicemanuals.info

Philips Semiconductors	Product specification

6-bit analog-to-digital converter

TDA8706A

with multiplexer and clamp

BLOCK DIAGRAM

VCLPR

VCLPB

VCLPG

CLK

11

12

13

24

CLAMP

20

D5

4

CLP

19

D4

8

18

D3

RED

digital

6-BIT

CMOS

voltage

MULTIPLEXER

ADC

OUTPUTS

17

outputs

D2

GREEN

9

16

D1

BLUE

10

15

D0

TDA8706A

VSSD

22

VDDA

REGULATOR

21

5

23

1

2

3

6

7

14

MGD133

VDDO

VDDA

VDDD

SR

SG

SB

VRB

V

SSO

select

VSSA

inputs

Fig.1

Block diagram.

1996 Jul 30

3

www.freeservicemanuals.info

Philips Semiconductors	Product specification

6-bit analog-to-digital converter

TDA8706A

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)		handbook, halfpage	1		24	CLK
	VDDA	5	analog supply voltage		SR
	VRB	6	reference voltage BOTTOM input		SG	2		23	VDDD
	VSSA	7	analog ground		SB	3		22	VSSD
	RED	8	RED input		CLP	4		21	VDDO
	GREEN	9	GREEN input
					VDDA	5		20	D5
	BLUE	10	BLUE input
					VRB	6		19	D4
	VCLPR	11	RED clamping voltage level input				TDA8706A
						7		18
	VCLPB	12	BLUE clamping voltage level input		VSSA				D3
	VCLPG	13	GREEN clamping voltage level input		RED	8		17	D2
	VSSO	14	digital output ground		GREEN	9		16	D1
	D0	15	digital voltage output; bit 0 (LSB)		BLUE	10		15	D0
	D1	16	digital voltage output; bit 1		VCLPR	11		14	VSSO
	D2	17	digital voltage output; bit 2
					VCLPB	12		13	VCLPG
	D3	18	digital voltage output; bit 3
							MGD132
	D4	19	digital voltage output; bit 4
	D5	20	digital voltage output; bit 5
	VDDO	21	supply voltage for output stage
	VSSD	22	digital ground
	VDDD	23	digital supply voltage		Fig.2		Pin configuration.
	CLK	24	clock input

1996 Jul 30

4

www.freeservicemanuals.info

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
VDDA	analog supply voltage	−0.3	+7.0	V
VDDD	digital supply voltage	−0.3	+7.0	V
VDD	supply voltage difference
	VDDA − VDDD	−1.0	+1.0	V
	VDDA − VDDO	−1.0	+1.0	V
	VDDD − VDDO	−1.0	+1.0	V
VI	input voltage	−0.3	+7.0	V
IO	output current	−	10	mA
Tstg	storage temperature	−55	+150	°C
Tamb	operating ambient temperature	−40	+85	°C
Tj	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
Rth j-a	thermal resistance from junction to ambient in free air	119	K/W

1996 Jul 30

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