Philips TDA8793HL Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA8793

8-bit, low-power, 3 V, 100 Msps
Analog-to-Digital Converter (ADC)

Product specification
Supersedes data of 1999 Oct 06
File under Integrated Circuits, IC02

2000 Nov 20

Philips Semiconductors Product specification

8-bit, low-power, 3 V, 100 Msps
Analog-to-Digital Converter (ADC)

FEATURES

• 8-bit low-power ADC: 180 mW (typical value)

• 2.7 to 3.6 V operation

• Track-and-hold circuit

• In track-and-hold mode: sampling rate from

70 to 100 Msps

• In non track-and-hold mode: sampling rate from
1 sps to 100 Msps

• CMOS/TTL compatible digital inputs and outputs

• Internal reference voltages

• Adjustable full-scale range possibility with external

reference

• Power-down mode: 5 mW.

APPLICATIONS

• Radio communications

• Digital data storage read channels

• Medical imaging

• Digital instrumentation.

TDA8793

GENERAL DESCRIPTION

The TDA8793 is an 8-bit low-power Analog-to-Digital
Converter (ADC) which includes a track-and-hold circuit
and internal references. The device converts an analog
input signal, up to 100 MHz, into 8-bit binary codes at a
maximum sample rate of 100 Msps. All digital inputs and
outputs are CMOS/TTL compatible. A sine wave clock
input signal can also be used.

The Power-down mode enables the device power
consumption to be reduced to 5 mW.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
V
V
I

CCA

CCA
CCD
CCO

analog supply voltage 2.7 3.0 3.6 V
digital supply voltage 2.7 3.0 3.6 V
output stages supply voltage 2.7 3.0 3.6 V
analog supply current operating 32 40 48 mA

standby 0 2 100 µA

I

CCD

digital supply current operating 12 16 24 mA

standby 0 0.66 1.1 mA

I

CCO

INL integral non-linearity ramp input; f

DNL differential non-linearity ramp input; f

f

CLK(max)

P

tot

output stages supply current ramp input − 4 6.5 mA

V

CCA=VCCD

V

CCA=VCCD

CLK

=3V

CLK

=3V

= 2 MHz;

= 2 MHz;

−±0.85 ±1.70 LSB

−±0.25 ±0.80 LSB

maximum clock input frequency 100 −−MHz
total power dissipation VCC=3V − 180 − mW

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA8793HL LQFP32 plastic low profile quad flat package; 32 leads; body 5 × 5 × 1.4 mm SOT401-1

2000 Nov 20 2

Philips Semiconductors Product specification

8-bit, low-power, 3 V, 100 Msps
Analog-to-Digital Converter (ADC)

BLOCK DIAGRAM

handbook, full pagewidth

INP
INN

REFOUT

REFIN

4
3

5
2

TEN

12

TRACK-AND-

HOLD

V

CCA

TDA8793

V

7

V

CCD

CCO2

10

ADC

CLOCK DRIVER

V

22

LATCHES

CCO1

20

CMOS

OUTPUTS

26

D7

25

D6

24

D5

23

D4

18

D3

17

D2

16

D1

15

D0

11

CLK

SDN

STDBY

32

8

REFERENCE

VOLTAGES

31

DEC

TDA8793

6

AGND

9

DGND

Fig.1 Block diagram.

21

OGND119OGND2

MGR016

2000 Nov 20 3

Philips Semiconductors Product specification

8-bit, low-power, 3 V, 100 Msps
Analog-to-Digital Converter (ADC)

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected
REFIN 2 reference input for ADC
INN 3 negative input
INP 4 positive input
REFOUT 5 reference output for AC coupling of

input
AGND 6 analog ground
V

CCA

STDBY 8 standby mode input
DGND 9 digital ground
V

CCD

CLK 11 clock input
TEN 12 track enable input (active LOW)
n.c. 13 not connected
n.c. 14 not connected
D0 15 data output bit 0 (LSB)
D1 16 data output bit 1

7 analog supply voltage

10 digital supply voltage

TDA8793

SYMBOL PIN DESCRIPTION

D2 17 data output bit 2
D3 18 data output bit 3
OGND1 19 output ground 1
V

CCO1

OGND2 21 output ground 2
V

CCO2

D4 23 data output bit 4
D5 24 data output bit 5
D6 25 data output bit 6
D7 26 data output bit 7 (MSB)
n.c. 27 not connected
n.c. 28 not connected
n.c. 29 not connected
n.c. 30 not connected
DEC 31 decoupling
SDN 32 stabilized decoupling node output

20 output supply voltage 1

22 output supply voltage 2

handbook, full pagewidth

n.c.

REFIN

INN
INP

1
2
3
4

SDN
32

DEC
31

n.c.
30

n.c.

29

TDA8793

AGND

V

CCA

5
6
7
8

9

DGND

10

CCD

V

11

CLK

12

TEN

REFOUT

STDBY

Fig.2 Pin configuration.

2000 Nov 20 4

n.c.
28

13
n.c.

n.c.

27

14
n.c.

D7
26

15
D0

D6
25

16

D1

24
23
22
21
20
19
18
17

MGR017

D5
D4

V

CCO2
OGND2
V

CCO1
OGND1

D3
D2

Philips Semiconductors Product specification

8-bit, low-power, 3 V, 100 Msps

TDA8793

Analog-to-Digital Converter (ADC)

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

V
V
∆V

V

I

O

T
T

CCA
CCD
CCO

CC

n

stg
amb

analog supply voltage note 1 −0.3 +5.0 V
digital supply voltage note 1 −0.3 +5.0 V
output stages supply voltage note 1 −0.3 +5.0 V
supply voltage differences between

V
V
V

CCA
CCO
CCA

and V

and V

and V

CCD

CCD

CCO

−1.0 +1.0 V

−1.0 +1.0 V

−1.0 +1.0 V

voltage on pins

INP, INN, CLK,

TEN and STDBY note 2 −0.3 +4.5 V

REFIN −0.3 +4.5 V
output current − 10 mA
storage temperature −55 +150 °C
ambient temperature 0 70 °C

Notes

1. The supply voltages V

CCA

, V

CCD

, V

may have any value between −0.3 and +5.0 V provided that the supply

CCO

voltage differences ∆VCC are respected.

2. All voltages are typical values and are referenced to all ground pins connected together.

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

R

th(j-a)

thermal resistance from junction to ambient in free air 94 K/W

2000 Nov 20 5

Philips Semiconductors Product specification

8-bit, low-power, 3 V, 100 Msps

TDA8793

Analog-to-Digital Converter (ADC)

CHARACTERISTICS

V

CCA=V7

DGND and OGND shorted together; V
V

CCA

T

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supplies

V

CCA

V

CCD

V

CCO

I

CCA

I

CCD

I

CCO

Internal reference voltage output (pin SDN); note 1
V

ref

V

reg

TC temperature coefficient − 20 − ppm/K

I

L

Internal reference voltage output (pin REFOUT)

V

ref

V

reg

TC temperature coefficient − 20 − ppm/K

I

L

Clock input (pin CLK); note 2
V

IL

V

IH

I

IL

I

IH

Z

i

C

i

Standby input (pin STDBY); see Table 1
V

IL

V

IH

I

IL

I

IH

Track enable input (pin TEN); see Table 2

V

IL

V

IH

I

IL

I

IH

to V6= 2.7 to 3.6 V; V

to V

= −0.15 to +0.15 V; T

CCO

CCD=V10

amb

to V9= 2.7 to 3.6 V; V

CCA

to V

= −0.15 to +0.15 V; V

CCD

= 0 to 70 °C; typical values measured at V

=25°C; single-ended input; unless otherwise specified.

analog supply voltage 2.7 3.0 3.6 V
digital supply voltage 2.7 3.0 3.6 V
output stages supply voltage 2.7 3.0 3.6 V
analog supply current 32 40 48 mA
digital supply current 12 16 24 mA
output stages supply current ramp input − 4 6.5 mA

f

= 20 MHz − 8.7 12 mA

i

reference voltage 1.21 1.26 1.31 V
line regulation voltage 2.7 < V

CCA

load current −1 −−mA

reference voltage 1.76 1.84 1.92 V
line regulation voltage 2.7 < V

CCA

load current −1 −−mA

LOW-level input voltage 0 − 0.8 V
HIGH-level input voltage 2 − V
LOW-level input current V
HIGH-level input current V
input impedance f
input capacitance f

=0 −2 − +2 µA

CLK
CLK=VCCD

= 100 MHz − 32 − kΩ

CLK

= 100 MHz − 2 − pF

CLK

LOW-level input voltage 0 − 0.8 V
HIGH-level input voltage 2 − V
LOW-level input current V
HIGH-level input current V

=0 −5 −−µA

STDBY
STDBY=VCCD

LOW-level input voltage 0 − 0.8 V
HIGH-level input voltage 2 − V
LOW-level input current V
HIGH-level input current V

=0 −5 −−µA

TEN
TEN=VCCD

CCO=V20

to V19 and V22to V21= 2.7 to 3.6 V; AGND,

CCD

to V

= −0.15 to +0.15 V;

CCO

CCA=VCCD=VCCO

= 3.0 V and

< 3.6 V − 1.25 4 mV

< 3.6 V − 1.5 5 mV

CCD

V

−−5µA

CCD

V

−−5µA

CCD

V

−−5µA

2000 Nov 20 6