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General Description

The MAX120/MAX122 complete, BiCMOS, sampling 12-bit analog-to-digital converters (ADCs) combine an on-chip track/hold (T/H) and a low-drift voltage reference with fast conversion speeds and low-power consumption. The T/H¡¯s 350ns acquisition time combined with the MAX120¡¯s 1.6?s conversion time results in throughput rates as high as 500k samples per second (ksps). Throughput rates of 333ksps are possible with the 2.6?s conversion time of the MAX122.

Features

? 12-Bit Resolution

? No Missing Codes Over Temperature

? 20ppm/¡ãC -5V Internal Reference

? 1.6?s Conversion Time/500ksps Throughput (MAX120)

? 2.6?s Conversion Time/333ksps Throughput (MAX122)

? Low Noise and Distortion:

70dB (min) SINAD;

-77dB (max) THD (MAX122)

? Low Power Dissipation: 210mW

? Separate Track/Hold Control Input

? Continuous-Conversion Mode Available

? ¡À5V Input Range, Overvoltage Tolerant to ¡À15V

? 24-Pin Narrow DIP, Wide SO, and SSOP Packages

Applications

Digital-Signal Processing

Audio and Telecom Processing

Speech Recognition and Synthesis

High-Speed Data Acquisition

Spectrum Analysis

Data Logging Systems