ADC08100

8-Bit, 20 MSPS to 100 MSPS, 1.3 mW/MSPS A/D

Converter

General Description

The ADC08100 is a low-power, 8-bit, monolithic analog-to-

digital converter with an on-chip track-and-hold circuit. Opti-

mized for low cost, low power, small size and ease of use,

this product operates at conversion rates of 20 MSPS to

100 MSPS with outstanding dynamic performance over its

full operating range while consuming just 1.3 mW per MHz of

clock frequency. That’s just 130 mW of power at 100 MSPS.

Raising the PD pin puts the ADC08100 into a Power Down

mode where it consumes just 1 mW.

The unique architecture achieves 7.4 Effective Bits with

41 MHz input frequency. The excellent DC and AC charac-

teristics of this device, together with its low power consump-

tion and single +3V supply operation, make it ideally suited

for many imaging and communications applications, includ-

ing use in portable equipment. Furthermore, the ADC08100

is resistant to latch-up and the outputs are short-circuit proof.

The top and bottom of the ADC08100’s reference ladder are

available for connections, enabling a wide range of input

possibilities. The digital outputs are TTL/CMOS compatible

with a separate output power supply pin to support interfac-

ing with 3V or 2.5V logic. The digital inputs (CLK and PD) are

TTL/CMOS compatible.

The ADC08100 is offered in a 24-lead plastic package

(TSSOP) and is specified over the industrial temperature

range of −40˚C to +85˚C.

Features

n

Single-ended input

n

Internal sample-and-hold function

n

Low voltage (single +3V) operation

n

Small package

n

Power-down feature

Key Specifications

n

Resolution

8 bits

n

Maximum sampling frequency

100 MSPS (min)

n

DNL

0.4 LSB (typ)

n

ENOB

7.4 bits (typ) at f

n

THD

−60 dB (typ)

n

Guaranteed no missing codes

n

Power consumption

— Operating:

1.3 mW/MSPS (typ)

— Power down:

1 mW (typ)

Applications

n

Flat panel displays

n

Projection systems

n

Set-top boxes

n

Battery-powered instruments

n

Communications

n

Medical scan converters

n

X-ray imaging

n

High speed viterbi decoders

n

Astronomy

Pin Configuration

10137101

December 2002

© 2002 National Semiconductor Corporation

DS101371

www.national.com