SPT7730

8-BIT, 3.0 MSPS, SERIAL OUTPUT A/D CONVERTER

FEATURES

• 8-Bit, 1 kHz to 3.0 MSPS Analog-to-Digital Converter

• Monolithic CMOS

• Serial Output

• Internal Sample-and-Hold

• Analog Input Range: 0 to 2 V Nominal; 3.3 V Max

• Power Dissipation (Excluding Reference Ladder)

45 mW at +5 V

16 mW at +3 V

• Single Power Supply: +3 V to +5 V Range

• High ESD Protection: 3,000 V Minimum

APPLICATIONS

• Handheld and Desktop Scanners

• DSP Interface Applications

• Portable Digital Radios

• Portable and Handheld Applications

• Automotive Applications

• Remote Sensing

8-Bit

A/D

Analog Input

VREF+

Serial

Output

Logic

Ground

VDD

SAR

Clock

Data Out

Start Convert

Track-and-Hold

VREF-

Timing And Control

GENERAL DESCRIPTION

verter delivers excellent high speed conversion performance

with low cost and low power. The serial port protocol is

compatible with the serial peripheral interface (SPI) or

MICROWIRE™ industry standard, high-speed synchronous

MPU interfaces. The large input bandwidth and fast transient

response time allow for CCD applications operating up to

3.0 MSPS.

The device can operate with a power supply range from +3 V

to +5 V with very low power dissipation. The small package

size makes this part excellent for handheld applications

where board space is a premium. The SPT7730 is available

in an 8-lead SOIC package over the commercial tempera-

ture range. Contact the factory for availability of die and

industrial temperature range versions.

BLOCK DIAGRAM

The CADEKA 8-bit, 3.0 MSPS, serial analog-to-digital con-