APPLICATIONS

• Medical Imaging

• Professional Video

• Radar Receivers

• Instrumentation

• Electronic Warfare

• Digital Communications

SPT7824

10-BIT, 40 MSPS, TTL OUTPUT A/D CONVERTER

FEATURES

• Monolithic 40 MSPS Converter

• On-Chip Track/Hold

• Bipolar

±2.0 V Analog Input

• 57 dB SNR @ 3.58 MHz Input

• Low Power (1.0 W Typical)

• 5 pF Input Capacitance

• TTL Outputs

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

indicate overflow conditions. Output data format is straight

binary. Power dissipation is very low at only 1.0 watt with

power supply voltages of +5.0 and -5.2 volts. The SPT7824

also provides a wide input voltage swing of

±2.0 volts.

The SPT7824 is available in 28-lead ceramic sidebrazed DIP,

PDIP and SOIC packages over the commercial, industrial and

military temperature ranges. Consult the factory for availabil-

ity of die and /833 versions.

GENERAL DESCRIPTION

The SPT7824 A/D converter is a 10-bit monolithic converter

capable of word rates a minimum of 40 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 TTL compatible to interface with TTL

logic systems. An overrange output signal is provided to

BLOCK DIAGRAM