Philips tda8765 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA8765

10-bit high-speed Analog-to-Digital Converter (ADC)

Preliminary speciﬁcation Supersedes data of 1998 May 08 File under Integrated Circuits, IC02

1999 Jan 06

Philips Semiconductors Preliminary speciﬁcation

10-bit high-speed Analog-to-Digital Converter (ADC)

FEATURES

• 10-bit resolution

• Sampling rate up to 55 MHz

•−3 dB bandwidth of 200 MHz

• 5 V power supplies

• Binary or twos-complement CMOS outputs

• In-range CMOS-compatible output

• TLL- CMOS-compatible static digital inputs

• 3 to 5 V CMOS-compatible digital outputs

• Differential clock input; Positive Emitter Coupled Logic

(PECL) compatible

• Power dissipation 325 mW (typical)

• Low analog input capacitance (typical 2 pF), no buffer

amplifier required

• Integrated sample-and-hold amplifier

• Differential analog input

• External amplitude range control

• Voltage controlled regulator included.

TDA8765

APPLICATIONS

• High-speed analog-to-digital conversion for – Video signal digitizing – High Definition TV (HDTV) – Imaging (camera scanner) – Medical imaging – Telecommunication – Base-station receiver.

GENERAL DESCRIPTION

The TDA8765 is a bipolar 10-bit Analog-to-Digital Converter (ADC) optimized for telecommunications and professional imaging. It converts the analog input signal into 10-bit binary coded digital words at a maximum sampling rate of 55 MHz. All static digital inputs (SH, and OTC) are TTL and CMOS compatible and all outputs are CMOS compatible. A sine wave clock input signal can also be used.

CE

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CCA

V

CCD

V

CCO

I

CCA

I

CCD

I

CCO

INL integral non-linearity f DNL differential non-linearity f f

CLK(max)

analog supply voltage 4.75 5.0 5.25 V digital supply voltage 4.75 5.0 5.25 V output supply voltage 3.0 3.3 5.25 V analog supply current − 33 tbf mA digital supply current − 30 tbf mA output supply current f

= 4 MHz; fi= 400 kHz − 3.2 tbf mA

CLK

= 4 MHz; fi= 400 kHz −±0.5 ±1.75 LSB

CLK

= 4 MHz; fi= 400 kHz −±0.3 ±0.5 LSB

CLK

maximum clock frequency

TDA8765H/4 40 −−MHz TDA8765H/5 55 −−MHz

P

tot

total power dissipation − 325 tbf mW

ORDERING INFORMATION

TYPE

NUMBER

TDA8765H/4 TDA8765H/5 55

NAME DESCRIPTION VERSION

QFP44

plastic quad ﬂat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm

PACKAGE

SOT307-2

SAMPLING

FREQUENCY (MHz)

40

1999 Jan 06 2

Philips Semiconductors Preliminary speciﬁcation

10-bit high-speed Analog-to-Digital Converter (ADC)

BLOCK DIAGRAM

V

handbook, full pagewidth

V

ref

V V

SH

n.c.

V

CCA1

2

11

43

I

42

I

sample-

and-hold

39

1, 5 to 8, 12 to 14, 16, 31 and 32

CCA2

AMP

CCA3

3

9

TDA8765

ANALOG-TO-DIGITAL

CCA4

41

CONVERTER

CLK

35

CLK

CLOCK DRIVER

V

CCD1

36

LATCHES

OVERFLOW/

UNDERFLOW

LATCH

TDA8765

V

CCD2

37

15

OUTPUTS

OUTPUT

18

CMOS

CEOTC

19

D9

21 22 23 24 25 26 27 28

29 30

33

20

D8 D7 D6 D5 D4 D3 D2 D1 D0

MSB

data outputs

LSB

V

CCO

IR

44

AGND1

10

AGND2

4

AGND3

40

AGND4

DGND1

Fig.1 Block diagram.

38

17

DGND2

34

MGK801

OGND

1999 Jan 06 3

Philips Semiconductors Preliminary speciﬁcation

10-bit high-speed Analog-to-Digital Converter (ADC)

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected V

CCA1

V

CCA3

AGND3 4 analog ground 3 n.c. 5 not connected n.c. 6 not connected n.c. 7 not connected n.c. 8 not connected V

CCA2

AGND2 10 analog ground 2 V

ref

n.c. 12 not connected n.c. 13 not connected n.c. 14 not connected V

CCD2

n.c. 16 not connected DGND2 17 digital ground 2 OTC

CE

IR 20 in-range output D9 21 data output; bit 9 (MSB) D8 22 data output; bit 8

2 analog supply voltage 1 (+5 V) 3 analog supply voltage 3 (+5 V)

9 analog supply voltage 2 (+5 V)

11 reference voltage input

15 digital supply voltage 2 (+5 V)

control input twos complement

18

output; active HIGH chip enable input

19

(CMOS level; active LOW)

TDA8765

SYMBOL PIN DESCRIPTION

D7 23 data output; bit 7 D6 24 data output; bit 6 D5 25 data output; bit 5 D4 26 data output; bit 4 D3 27 data output; bit 3 D2 28 data output; bit 2 D1 29 data output; bit 1 D0 30 data output; bit 0 (LSB) n.c. 31 not connected n.c. 32 not connected V

CCO

OGND 34 output ground CLK

CLK 36 clock input V

CCD1

DGND1 38 digital ground 1 SH 39 sample-and-hold enable input

AGND4 40 analog ground 4 V

CCA4

V

I

V

I

AGND1 44 analog ground 1

33 output supply voltage (3 to 5.25 V)

complementary clock input; active

35

LOW

37 digital supply voltage 1 (+5 V)

(CMOS level; active HIGH)

41 analog supply voltage 4 (+5 V) 42 positive analog input voltage 43 negative analog input voltage

1999 Jan 06 4

Philips Semiconductors Preliminary speciﬁcation

10-bit high-speed Analog-to-Digital Converter (ADC)

handbook, full pagewidth

I

VIV

AGND1 44

43

42

n.c.

1 V V

AGND3

V

AGND2

CCA1 CCA3

n.c. n.c.

CCA2

V

ref

2

3

4

5

6

7

8

9

10 11

CCA4

AGND4

V

41

40

TDA8765H

SH 39

DGND1

V

38

CCD1

37

CLK 36

CLK

35

OGND 34

TDA8765

V

33

CCO

n.c.

32 31

n.c. D0

30 29

D1

28

D2 D3

27 26

D4 D5

25 24

D6 D7

23

12 n.c.

13

14

15

16

17

n.c.

CCD2

V

n.c.

DGND2

Fig.2 Pin configuration.

18

OTC

19 CE

20

21

22

IR

D9

D8

MGK800

1999 Jan 06 5

Philips Semiconductors Preliminary speciﬁcation

10-bit high-speed Analog-to-Digital

TDA8765

Converter (ADC)

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V V V ∆V

V V

I

O

T T T

CCA CCD CCO

CC

I i(p-p)

stg amb j

analog supply voltage note 1 −0.3 +7.0 V digital supply voltage note 1 −0.3 +7.0 V output supply voltage note 1 −0.3 +7.0 V supply voltage difference

− V

V V V

CCA CCD CCA

− V

CCD CCO CCO

input voltage at pins 42 and 43 referenced to AGND 0.3 V input voltage at pins 35 and 36 for

−1.0 +1.0 V

−1.0 +4.0 V

CCA

− V

CCD

differential clock drive (peak-to-peak value)

output current − 10 mA storage temperature −55 +150 °C operating ambient temperature 0 +85 °C junction temperature − 150 °C

V V

Note

1. The supply voltages V

CCA

, V

CCD

and V

may have any value between −0.3 and +7.0 V provided that the supply

CCO

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 CONDITION VALUE UNIT

R

th(j-a)

thermal resistance from junction to ambient in free air 75 K/W

1999 Jan 06 6