AD7868AN

The AD7868AN from Analog Devices is a comprehensive 12-bit analog I/O system designed for applications requiring both analog-to-digital and digital-to-analog conversion. This integrated circuit features a 12-bit ADC with a track-and-hold amplifier, offering a throughput rate of 83 kHz and a signal-to-noise ratio of 72 dB. It also includes a 12-bit DAC with an output amplifier that settles within 3 μs to 12 bits, also achieving a 72 dB SNR.

On-chip, temperature-compensated 3V buried Zener references provide precision for both the DAC and ADC. The device operates from ±5V power supplies, with an analog input/output range of ±3V. Interfacing is serial, minimizing pin count and allowing for a compact 24-pin DIP package. Standard control signals facilitate serial interfacing with DSP machines, while asynchronous conversion control is possible with CONVST and LDAC inputs.

Key specifications include a typical power consumption of 130 mW. The AD7868AN is designed for applications such as digital signal processing, speech recognition and synthesis, spectrum analysis, high-speed modems, and DSP servo control. Its through-hole mounting type and standard DIP package make it suitable for various prototyping and production environments.