DESCRIPTION

The LTC®1274/LTC1277 are 8µs sampling 12-bit A/D converters which draw only 2mA (typ) from single 5V or ±5V supplies. These easy-to-use devices come complete with a 2µs sample-and-hold, a precision reference and an internally trimmed clock. Unipolar and bipolar conversion modes add to the flexibility of the ADCs.

FEATURES

■ Low Power Dissipation: 10mW

■ Sample Rate: 100ksps

■ Samples Inputs Beyond Nyquist, 72dB S/(N + D) and 82dB THD at fIN = 100kHz

■ Single Supply 5V or ±5V Operation

■ Power Shutdown to 1µA in Sleep Mode

■ 180µA Nap Mode (LTC1277) with Instant Wake-Up

■ Internal Reference Can Be Overdriven

■ Internal Synchronized Clock

■ 0V to 4.096V or ±2.048V Input Ranges (1mV/LSB)

■ 24-Lead SO Package

APPLICATIONS

■ Battery-Powered Portable Systems

■ High Speed Data Acquisition for PCs

■ Digital Signal Processing

■ Multiplexed Data Acquisition Systems

■ Audio and Telecom Processing

■ Spectrum Analysis