SPT7810

10-BIT, 20 MSPS, ECL OUTPUT A/D CONVERTER

FEATURES

• Monolithic 20 MSPS Converter

• On-Chip Track/Hold

• Bipolar

±2.0 V Analog Input

• 60 dB SNR @ 1 MHz Input

• Low Power (1.3 W Typical)

• 5 pF input Capacitance

• ECL Outputs

APPLICATIONS

• Medical Imaging

• Professional Video

• Radar Receivers

• Instrumentation

• Electronic Warfare

• Digital Communications

Analog

Prescaler

10

Digital

Output

Successive Interpolation

Stage i

Successive Interpolation

Stage i+1

Successive Interpolation

Stage N

Analog

Input

4

Coarse

A/D

T/H Amplifier

Bank

GENERAL DESCRIPTION

The SPT7810 A/D converter is a 10-bit monolithic converter

capable of word rates of a minimum of 20 MSPS. On board

track/hold function assures excellent dynamic performance

without the need for external components. Drive require-

ment problems are minimized with an input capacitance of

only 5 pF.

Inputs and outputs are ECL to provide a higher level of noise

immunity in high speed system applications. An overrange

output signal is provided to indicate overflow conditions.

Output data format is straight binary. Power dissipation is

very low at only 1.3 watts with power supply voltages of +5.0

and -5.2 volts. The SPT7810 also provides a wide input

voltage swing of

±2.0 volts.

The SPT7810 is available in a 28-lead ceramic sidebrazed

DIP, PDIP, and die form. Commercial and industrial tempera-

ture ranges are currently offered. Contact the factory for

availability of military temperature range and /883 processed

units.

BLOCK DIAGRAM