True Bipolar Input, Dual 12-Bit, 2-Channel, Simultaneous Sampling SAR ADC

The AD7366 / AD7367 are dual 12-bit/14-bit, high speed, low power, successive approximation analog-to-digital converters (ADCs) that feature throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a 2-channel multiplexer, and a low noise, wide bandwidth track-and-hold amplifier.

The AD7366 / AD7367 are fabricated on the Analog Devices, Inc., industrial CMOS process (iCMOS), which is a technology platform combining the advantages of low and high voltage CMOS. The iCMOS process allows the AD7366 / AD7367 to accept high voltage bipolar signals in addition to reducing power consumption and package size. The AD7366 / AD7367 can accept true bipolar analog input signals in the ±10 V range, ±5 V range, and 0 V to 10 V range.

The AD7366 / AD7367 have an on-chip 2.5 V reference that can be disabled to allow the use of an external reference. If a 3 V reference is applied to the DCAPA and DCAPB pins, the AD7366 / AD7367 can accept a true bipolar ±12 V analog input. Minimum ±12 V VDD and VSS supplies are required for the ±12 V input range.

PRODUCT HIGHLIGHTS

* The AD7366/AD7367 can accept true bipolar analog input signals, as well as ±10 V, ±5 V, ±12 V (with external reference), and 0 V to 10 V unipolar signals.

* Two complete ADC functions allow simultaneous sampling and conversion of two channels.

* 1 MSPS serial interface: SPI-/QSPI-/DSP-/MICROWIRE-compatible interface.

* Dual 12-bit/14-bit, 2-channel ADC

* True bipolar analog inputs

* Programmable input ranges:

±10 V, ±5 V, 0 V to 10 V

±12 V with 3 V external reference

* Throughput rate: 1 MSPS

* Simultaneous conversion with read in less than

1 μs

* Low current consumption:

8.3 mA typical in normal mode

320 nA typical in shutdown mode