Product Details
●The AD7322 is a 2-channel, 12-bit plus sign, successive approximation analog-to-digital converter (ADC) designed on the _i_CMOS (industrial CMOS) process. _i_CMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, _i_CMOS components can accept bipolar input signals while providing increased performance, dramatically reduced power consumption, and reduced package size.
●The AD7322 can accept true bipolar analog input signals. The AD7322 has four software-selectable input ranges, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. Each analog input channel can be independently programmed to one of the four input ranges. The analog input channels on the AD7322 can be programmed to be single-ended, true differential, or pseudo differential.
●The ADC contains a 2.5 V internal reference. The AD7322 also allows for external reference operation. If a 3 V reference is applied to the REFIN/OUT pin, the AD7322 can accept a true bipolar ±12 V analog input. Minimum ±12 V VDD and VSS supplies are required for the ±12 V input range. The ADC has a high speed serial interface that can operate at throughput rates up to 1 MSPS.
●Product Highlights
● 1. The AD7322 can accept true bipolar analog input signals, ±10 V, ±5 V, and ±2.5 V, and 0 V to +10 V unipolar signals.
● 2. The two analog inputs can be configured as two single-ended inputs, one true differential input, or one pseudo differential input.
● 3. 1 MSPS serial interface. SPI-/QSPI-/DSP-/MICROWIRE-compatible interface.
● 4. Low power, 31 mW maximum, at 1 MSPS throughput rate.
● 5. Channel sequencer.
●### Features and Benefits
● 12-bit plus sign SAR ADC
● True bipolar input ranges
● Software-selectable input ranges
●±10 V, ±5 V, ±2.5 V, 0 V to +10 V
● 1 MSPS throughput rate
● Two analog input channels with channel sequencer
● Single-ended, true differential, and pseudo differential analog input capability
● High analog input impedance
● Low power: 21 mW
● Full power signal bandwidth: 22 MHz
● Internal 2.5 V reference
● High speed serial interface
● Power-down modes
● 14-lead TSSOP package
● iCMOS process technology
