AD779JDZ

The AD779JDZ from Analog Devices is a versatile 14-bit monolithic analog-to-digital converter (ADC). It integrates a sample-hold amplifier (SHA), microprocessor-compatible bus interface, voltage reference, and clock generation circuitry on a single chip.

This ADC offers a high sampling rate of 128k Conversions per Second with a full power bandwidth of 1 MHz and a full linear bandwidth of 500 kHz. It supports a 10V unipolar or bipolar input range and features a high input impedance of 10 MΩ, allowing direct connection to unbuffered sources without signal degradation. The data format is straight binary for unipolar mode and twos complement binary for bipolar mode, accessed via a 16-bit bus interface.

Fabricated on Analog Devices’ BiMOS process, the AD779JDZ combines low power CMOS logic with high precision, low noise bipolar circuits. Laser-trimmed thin-film resistors ensure high accuracy. The converter utilizes a recursive subranging algorithm with error correction and flash converter circuitry for high speed and resolution.

Available in a 28-CDIP package, the AD779JDZ is suitable for applications requiring precise analog-to-digital conversion. It operates with analog supplies of ±12V and a digital supply of 5V, with an operating temperature range of 0°C to 70°C.