Philips TDA8763AM-5-C4, TDA8763AM-5-C3, TDA8763AM-4-C4, TDA8763AM-4-C3, TDA8763AM-4-C1 Datasheet

INTEGRATED CIRCUITS

DATA SHEET

TDA8763A

10-bit high-speed low-power ADC

Product specification

1999 Jan 06

Supersedes data of 1997 Feb 07

File under Integrated Circuits, IC02

Philips Semiconductors	Product specification
10-bit high-speed low-power ADC	TDA8763A

FEATURES

∙10-bit resolution

∙Sampling rate up to 50 MHz

∙DC sampling allowed

∙One clock cycle conversion only

∙High signal-to-noise ratio over a large analog input frequency range (9.4 effective bits at 4.43 MHz full-scale input at fclk = 40 MHz)

∙No missing codes guaranteed

∙In-Range (IR) CMOS output

∙Levels TTL and CMOS compatible digital inputs

∙3 to 5 V CMOS digital outputs

∙Low-level AC clock input signal allowed

∙External reference voltage regulator

∙Power dissipation only 175 mW (typical)

∙Low analog input capacitance, no buffer amplifier required

∙No sample-and-hold circuit required.

ORDERING INFORMATION

APPLICATIONS

High-speed analog-to-digital conversion for:

∙Video data digitizing

∙Radar pulse analysis

∙Transient signal analysis

∙High energy physics research

∙ΣΔ modulators

∙Medical imaging.

GENERAL DESCRIPTION

The TDA8763A is a 10-bit high-speed low-power analog-to-digital converter (ADC) for professional video and other applications. It converts the analog input signal into 10-bit binary-coded digital words at a maximum sampling rate of 50 MHz. All digital inputs and outputs are TTL and CMOS compatible, although a low-level sine wave clock input signal is allowed.

The device requires an external source to drive its reference ladder. If the application requires that the reference is driven via internal sources the recommendation is to use the TDA8763.

	TYPE NUMBER		PACKAGE		SAMPLING
		NAME	DESCRIPTION	VERSION	FREQUENCY (MHz)
	TDA8763AM/3	SSOP28	plastic shrink small outline package; 28 leads;	SOT341-1	30
	TDA8763AM/4	SSOP28		SOT341-1	40
			body width 5.3 mm
	TDA8763AM/5	SSOP28		SOT341-1	50

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Philips Semiconductors					Product specification
10-bit high-speed low-power ADC					TDA8763A
QUICK REFERENCE DATA
SYMBOL	PARAMETER		CONDITIONS	MIN.	TYP.	MAX.	UNIT
VCCA	analog supply voltage			4.75	5.0	5.25	V
VCCD	digital supply voltage			4.75	5.0	5.25	V
VCCO	output stages supply voltage			3.0	3.3	5.25	V
ICCA	analog supply current			−	18	24	mA
ICCD	digital supply current			−	16	21	mA
ICCO	output stages supply current		fclk = 40 MHz; ramp input	−	1	2	mA
INL	integral non-linearity		fclk = 40 MHz; ramp input	−	±0.8	±2.0	LSB
DNL	differential non-linearity		fclk = 40 MHz; ramp input	−	±0.5	±0.9	LSB
fclk(max)	maximum clock frequency
	TDA8763AM/3			30	−	−	MHz
	TDA8763AM/4			40	−	−	MHz
	TDA8763AM/5			50	−	−	MHz
Ptot	total power dissipation		fclk = 40 MHz; ramp input	−	175	247	mW

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Philips Semiconductors	Product specification
10-bit high-speed low-power ADC	TDA8763A
BLOCK DIAGRAM

			VCCA			CLK	VCCD2	OE
			3			1	11	10
					CLOCK DRIVER				2		TC
							TDA8763A
	VRT	9
									25	D9	MSB
									24	D8
									23	D7
			RLAD						22	D6
	V I	8							21	D5
analog			ANALOG -TO - DIGITAL			LATCHES		CMOS	20	D4	data outputs
voltage input				CONVERTER				OUTPUTS
	VRM								19	D3
		7							18	D2
									17	D1
									16	D0	LSB
	VRB	6							13	VCCO
						IN-RANGE LATCH			26		IR
							CMOS OUTPUT				output
									28
			4	12			14	27		VCCD1
			AGND	DGND2			OGND	DGND1	MBG913

analog ground

digital ground

output ground digital ground

Fig.1 Block diagram.

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Philips Semiconductors	Product specification
10-bit high-speed low-power ADC	TDA8763A

PINNING

		SYMBOL			PIN	DESCRIPTION
	CLK				1	clock input
					2	twos complement input (active LOW)
	TC
	VCCA				3	analog supply voltage (+5 V)
		AGND			4	analog ground
		n.c.			5	not connected
		VRB			6	reference voltage BOTTOM input
		VRM			7	reference voltage MIDDLE input
		VI			8	analog input voltage
		VRT			9	reference voltage TOP input
					10	output enable input (CMOS level
		OE
						input, active LOW)
	VCCD2				11	digital supply voltage 2 (+5 V)
	DGND2				12	digital ground 2
	VCCO				13	supply voltage for output stages
						(3 to 5 V)
	OGND				14	output ground
	n.c.				15	not connected
	D0				16	data output; bit 0 (LSB)
	D1				17	data output; bit 1
	D2				18	data output; bit 2
	D3				19	data output; bit 3
	D4				20	data output; bit 4
	D5				21	data output; bit 5
	D6				22	data output; bit 6
	D7				23	data output; bit 7
	D8				24	data output; bit 8
	D9				25	data output; bit 9 (MSB)
	IR				26	in range data output
	DGND1				27	digital ground 1
	VCCD1				28	digital supply voltage 1 (+5 V)

hhandbook,halfphalfpage						VCCD1
CLK			1		28
TC			2		27	DGND1
VCCA
			3		26	IR
AGND			4		25	D9
n.c.			5		24	D8
VRB
			6		23	D7
VRM
			7	TDA8763A	22	D6
	VI					D5
			8		21
VRT
			9		20	D4
						D3
	OE		10		19
VCCD2
			11		18	D2
DGND2			12		17	D1
V CCO
			13		16	D0
OGND			14		15	n.c.
				MBG914

Fig.2 Pin configuration.

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Philips Semiconductors				Product specification
10-bit high-speed low-power ADC					TDA8763A
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL	PARAMETER	CONDITIONS	MIN.		MAX.	UNIT
VCCA	analog supply voltage	note 1	−0.3		+7.0	V
VCCD	digital supply voltage	note 1	−0.3		+7.0	V
VCCO	output stages supply voltage	note 1	−0.3		+7.0	V
VCC	supply voltage difference
	VCCA − VCCD		−1.0		+1.0	V
	VCCA − VCCO		−1.0		+4.0	V
	VCCD − VCCO		−1.0		+4.0	V
VI	input voltage	referenced to AGND	−0.3		+7.0	V
Vi(sw)(p-p)	AC input voltage for switching (peak-to-peak value)	referenced to DGND	−		VCCD	V
IO	output current		−		10	mA
Tstg	storage temperature		−55		+150	°C
Tamb	operating ambient temperature		−40		+85	°C
Tj	junction temperature		−		150	°C

Note

1. The supply voltages VCCA, VCCD and VCCO may have any value between −0.3 V and +7.0 V provided that the supply voltage differences VCC are respected.

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	CONDITIONS	VALUE	UNIT
Rth(j-a)	thermal resistance from junction to ambient	in free air	110	K/W

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Philips Semiconductors	Product specification
10-bit high-speed low-power ADC	TDA8763A

CHARACTERISTICS

VCCA = V3 to V4 = 4.75 to 5.25 V; VCCD = V11 to V12 and V28 to V27 = 4.75 to 5.25 V; VCCO = V13 to V14 = 3.0 to 5.25 V; AGND and DGND shorted together; Tamb = 0 to +70 °C; typical values measured at VCCA = VCCD = 5 V and

VCCO = 3.3 V; Vi(p-p) = 2.0 V; CL = 15 pF and Tamb = 25 °C; unless otherwise specified.

SYMBOL					PARAMETER	CONDITIONS	MIN.	TYP.	MAX.	UNIT
Supply
VCCA			analog supply voltage				4.75	5.0	5.25	V
VCCD1			digital supply voltage 1				4.75	5.0	5.25	V
VCCD2			digital supply voltage 2				4.75	5.0	5.25	V
VCCO			output stages supply voltage				3.0	3.3	5.25	V
VCC			supply voltage difference
			VCCA − VCCD				−0.20	−	+0.20	V
			VCCA − VCCO				−0.20	−	+2.25	V
			VCCD − VCCO				−0.20	−	+2.25	V
ICCA			analog supply current				−	18	24	mA
ICCD			digital supply current				−	16	21	mA
ICCO			output stages supply current			fclk = 40 MHz; ramp input	−	1	2	mA
Inputs
CLOCK INPUT CLK (REFERENCED TO DGND); note 1
VIL			LOW-level input voltage				0	−	0.8	V
VIH			HIGH-level input voltage				2.0	−	VCCD	V
IIL			LOW-level input current			Vclk = 0.8 V	−1	0	+1	μA
IIH			HIGH-level input current			Vclk = 2.0 V	−	2	10	μA
Zi			input impedance			fclk = 40 MHz	−	2	−	kΩ
Ci			input capacitance				−	2	−	pF
INPUTS			AND		(REFERENCED TO DGND); see Table 2
	OE			TC
VIL			LOW-level input voltage				0	−	0.8	V
VIH			HIGH-level input voltage				2.0	−	VCCD	V
IIL			LOW-level input current			VIL = 0.8 V	−1	−	−	μA
IIH			HIGH-level input current			VIH = 2.0 V	−	−	1	μA
VI (ANALOG INPUT VOLTAGE REFERENCED TO AGND)
IIL			LOW-level input current			VI = VRB = 1.3 V	−	0	−	μA
IIH			HIGH-level input current			VI = VRT = 3.67 V	−	35	−	μA
Zi			input impedance			fi = 4.43 MHz	−	8	−	kΩ
Ci			input capacitance				−	5	−	pF
Reference voltages for the resistor ladder see Table 1
VRB			reference voltage BOTTOM				1.2	1.3	2.45	V
VRT			reference voltage TOP				3.2	3.67	VCCA − 0.8	V
Vdiff			differential reference voltage				2.0	2.37	3.0	V
			VRT − VRB
Iref			reference current			VRT − VRB = 2.37 V	−	9.7	−	mA

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Philips Semiconductors					Product specification
10-bit high-speed low-power ADC					TDA8763A
SYMBOL	PARAMETER	CONDITIONS	MIN.	TYP.	MAX.	UNIT
Rlad	resistor ladder		−	245	−	Ω
TCRlad	temperature coefficient of the		−	1860	−	ppm
	resistor ladder		−	456	−	mΩ/K
Voffset(B)	offset voltage BOTTOM	VRT − VRB = 2.37 V; note 2	−	175	−	mV
Voffset(T)	offset voltage TOP	VRT − VRB = 2.37 V; note 2	−	175	−	mV
Vi(p-p)	analog input voltage	note 3	1.70	2.02	2.55	V
	(peak-to-peak value)
Outputs
DIGITAL OUTPUTS D9 TO D0 AND IR (REFERENCED TO OGND)
VOL	LOW-level output voltage	IOL = 1 mA	0	−	0.5	V
VOH	HIGH-level output voltage	IOH = −1 mA	VCCO − 0.5	−	VCCO	V
IOZ	output current in 3-state mode	0.5 V < Vo < VCCO	−20	−	+20	μA
Switching characteristics
CLOCK INPUT CLK; see Fig.4; note 1
fclk(max)	maximum clock frequency
	TDA8763AM/3		30	−	−	MHz
	TDA8763AM/4		40	−	−	MHz
	TDA8763AM/5		50	−	−	MHz
tCPH	clock pulse width HIGH	full effective bandwidth	8.5	−	−	ns
tCPL	clock pulse width LOW	full effective bandwidth	5.5	−	−	ns
Analog signal processing
LINEARITY
INL	integral non-linearity	fclk = 40 MHz; ramp input	−	±0.8	±2.0	LSB
DNL	differential non-linearity	fclk = 40 MHz; ramp input	−	±0.5	±0.9	LSB
Eoffset	offset error	middle code; VRB = 1.3 V;	−	±1	−	LSB
		VRT = 3.67 V
EG	gain error (from device to	VRB = 1.3 V; VRT = 3.67 V;	−	±0.1	−	%
	device) using external	note 4
	reference voltage

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