SPT7912SCJ 查看數據表（PDF） - Signal Processing Technologies

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SPT7912SCJ

12-BIT, 30 MSPS, ECL, A/D CONVERTER

Signal Processing Technologies 

SPT7912

12-BIT, 30 MSPS, ECL, A/D CONVERTER

FEATURES

• Monolithic

• 12-Bit 30 MSPS Converter

• 65 dB SNR @ 1 MHz Input

• On-Chip Track/Hold

• Bipolar ±2.0 V Analog Input

• Low Power (1.4 W Typical)

• 5 pF Input Capacitance

• ECL Outputs

APPLICATIONS

• Radar Receivers

• Professional Video

• Instrumentation

• Medical Imaging

• Electronic Warfare

• Digital Communications

• Digital Spectrum Analyzers

• Electro-Optics

GENERAL DESCRIPTION

The SPT7912 A/D converter is industry's first 12-bit mono-

lithic analog-to-digital converter capable of sample rates

greater than 30 MSPS. On board input buffer and track/hold

function assures excellent dynamic performance without the

need for external components. Drive requirement 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 1.4 watts with power supply voltages of +5.0

and -5.2 volts. The SPT7912 also provides a wide input

voltage range of ±2.0 volts.

The SPT7912 is available in a 32-lead ceramic sidebrazed

DIP package and in die form. A commercial temperature

range of 0 to +70 °C is currently offered.

BLOCK DIAGRAM

VIN

INPUT

BUFFER

ANALOG GAIN

COMPRESSION

PROCESSOR

4-BIT FLASH

CONVERTER

TRACK AND HOLD

AMPLIFIERS

4

ASYNCHRONOUS

SAR

8

ERROR

CORRECTION,

DECODING

AND

OUTPUT ECL

12

DRIVERS

DIGITAL

OUTPUT

Signal Processing Technologies, Inc.

4755 Forge Road, Colorado Springs, Colorado 80907, USA

Phone: (719) 528-2300 FAX: (719) 528-2370

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