The AD7609 is an 18-bit, 8-channel, true differential, simultaneous sampling analog-to-digital data acquisition system (DAS). The part contains analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, an 18-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces. The AD7609 operates from a single 5 V supply and can accommodate ±20 V and ±10 V true bipolar differential input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5 V on each analog input pin. The AD7609 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies. The AD7609 antialiasing filter has a −3 dB cutoff frequency of 32 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the −3 dB bandwidth. Applications * Power line monitoring and protection systems * Multiphase motor control * Instrumentation and control systems * Multiaxis positioning systems * Data acquisition systems (DAS) * 8 simultaneously sampled inputs * True differential inputs * True bipolar analog input ranges: ±20 V, ±10 V * Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE * Fully integrated data acquisition solution * Analog input clamp protection * Input buffer with 1 MΩ analog input impedance * Second-order antialiasing analog filter * On-chip accurate reference and reference buffer * 18-bit ADC with 200 kSPS on all channels * Oversampling capability with digital filter https://elecena.pl/product/2610032/8-channel-differential-das-with-18-bit-bipolar-simultaneous-sampling-adc 2012-03-15 https://elecena.pl/product/2610032/8-channel-differential-das-with-18-bit-bipolar-simultaneous-sampling-adc 2018-03-29 https://elecena.pl/product/2610032/8-channel-differential-das-with-18-bit-bipolar-simultaneous-sampling-adc 2025-01-21