12-BIT / 30 MSPS / TTL / A/D CONVERTER
SPT7922
12-BIT, 30 MSPS, TTL, A/D CONVERTER
FEATURES
• • • • • • • • Monolithic 12-Bit 30 MSPS Converter 64 dB SNR @ 3.5...
Description
SPT7922
12-BIT, 30 MSPS, TTL, A/D CONVERTER
FEATURES
Monolithic 12-Bit 30 MSPS Converter 64 dB SNR @ 3.58 MHz Input On-Chip Track/Hold Bipolar ±2.0 V Analog Input Low Power (1.1 W Typical) 5 pF Input Capacitance TTL Outputs
APPLICATIONS
Radar Receivers Professional Video Instrumentation Medical Imaging Electronic Warfare Digital Communications Digital Spectrum Analyzers Electro-Optics
GENERAL DESCRIPTION
The SPT7922 A/D converter is the industry's first 12-bit monolithic analog-to-digital converter capable of sample rates of 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. Logic inputs and outputs are TTL. An overrange output signal is provided to indicate overflow conditions. Output data format is straight binary. Power dissipation is very low at only 1.1 watts with power supply voltages of +5.0 and -5.2 volts. The SPT7922 also provides a wide input voltage range of ±2.0 volts. The SPT7922 is available in 32-lead ceramic sidebrazed DIP and 44-lead cerquad packages over the commercial temperature range. Consult the factory for availability of die, military temperature and /883 versions.
BLOCK DIAGRAM
VIN
Input Buffer
4-Bit Flash Converter 4 Error Correction, Decoding and Output TTL Drivers
Digital Output 12
Analog Gain Compression Processor
Track-and-Hold Amp...
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