The ADS8691, ADS8695, and ADS8699
belong to a family of integrated data acquisition system based on a successive
approximation (SAR) analog-to-digital converter (ADC). The devices feature a
high-speed, high-precision SAR ADC, integrated analog front-end (AFE) input driver
circuit, overvoltage protection circuit up to ±20 V, and an on-chip 4.096-V
reference with extremely low temperature drift.
The devices operate on a single 5-V
analog supply, but support true bipolar input ranges of ±12.288 V, ±6.144 V,
±10.24 V, ±5.12 V, and ±2.56 V, as well as unipolar input ranges of
0 V to 12.288 V, 0 V to 10.24 V, 0 V to 6.144 V, and
0 V to 5.12 V. The gain and offset errors are accurately trimmed within the
specified values for each input range to ensure high dc precision. The input range
selection is done by software programming of the device internal registers. The
devices offer a high resistive input impedance (≥ 1 MΩ) irrespective of the selected
input range.
The multiSPI digital interface is
backward-compatible to the traditional SPI protocol. Additionally, configurable
features simplify interface to a wide range of host controllers.
The ADS8691, ADS8695, and ADS8699
belong to a family of integrated data acquisition system based on a successive
approximation (SAR) analog-to-digital converter (ADC). The devices feature a
high-speed, high-precision SAR ADC, integrated analog front-end (AFE) input driver
circuit, overvoltage protection circuit up to ±20 V, and an on-chip 4.096-V
reference with extremely low temperature drift.
The devices operate on a single 5-V
analog supply, but support true bipolar input ranges of ±12.288 V, ±6.144 V,
±10.24 V, ±5.12 V, and ±2.56 V, as well as unipolar input ranges of
0 V to 12.288 V, 0 V to 10.24 V, 0 V to 6.144 V, and
0 V to 5.12 V. The gain and offset errors are accurately trimmed within the
specified values for each input range to ensure high dc precision. The input range
selection is done by software programming of the device internal registers. The
devices offer a high resistive input impedance (≥ 1 MΩ) irrespective of the selected
input range.
The multiSPI digital interface is
backward-compatible to the traditional SPI protocol. Additionally, configurable
features simplify interface to a wide range of host controllers.