REV. 1B October 2003

Features

• 10-Bit, 20 MSPS Analog-to-Digital converter

• Monolithic CMOS

• Internal track-and-hold

•Low input capacitance: 1.4 pF

•Low power dissipation: 79mW

• 2.8 to 3.6V power supply range

• TTL-compatible outputs

• -40°C to +85°C operation

Applications

• CCD imaging cameras and sensors

• Medical imaging

• RF communications

• Document and film scanners

• Electro-optics

•Transient signal analysis

• Handheld equipment

Description

The SPT7851 10-bit, 20 MSPS analog-to-digital converter

has a pipelined converter architecture built in a CMOS

process. It delivers high performance with a typical power

dissipation of only 79mW. With low distortion and high

dynamic range, this device offers the performance needed

for imaging, multimedia, telecommunications and instru-

mentation applications.

The SPT7851 is available in a 44-lead Thin Quad Flat Pack

(TQFP) package in the industrial temperature range (-40°C

to +85°C).

SPT7851

10-Bit, 20 MSPS, 79mW

Analog-to-DIgital Converter

Functional Block Diagram

Stage

1

Stage

2

Stage

9

Stage

10

Clock

Driver

Digital Delays, Error Correction and Output

VIN+

VIN–

VREF+

VREF–

CLK

Digital Output (D0 – D9)

10

DAC

ADC

–

D<1…0> Pipeline Stage

www.cadeka.com