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 Military temperature range: −55°C to +125°C 500 kSPS throughput rate 8 analog input channels with channel sequencer Single-ended, true differential, and pseudo differential analog input capability High analog input impedance Low power: 18 mW Temperature indicator Full power signal bandwidth: 22 MHz Internal 2.5 V reference High speed serial interface Power-down modes Controlled manufacturing baseline Single assembly/test site 20-lead TSSOP package iCMOS process technology Qualification data available on request

ENHANCED PRODUCT FEATURES

Supports defense and aerospace applications (AQEC standard) Military temperature range: −55°C to +105°C Controlled manufacturing baseline One assembly/test site One fabrication site Enhanced product change notification Qualification data available on request

GENERAL DESCRIPTION

The AD7327-EP1 is an 8-channel, 12-bit plus sign successive approximation ADC designed on the iCMOS™ (industrial CMOS) process. 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 devices achieved. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, dramatically reduced power consumption, and reduced package size.

The AD7327-EP can accept true bipolar analog input signals, software-selectable from ±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 AD7327-EP can be programmed to be single-ended, true differential, or pseudo differential. The ADC contains a 2.5 V internal reference. The AD7327-EP also allows external reference operation. If a 3 V reference is applied to the REFIN/OUT pin, the AD7327-EP 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 500 kSPS

The AD7327-EP is housed in a 20-lead TSSOP with operation specified from −55°C to +125°C. Additional application and technical information can be found in the AD7327 data sheet.

PRODUCT HIGHLIGHTS

1. The AD7327-EP can accept true bipolar analog input signals, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V (unipolar).

2. The eight analog inputs can be configured as eight singleended inputs, four true differential inputs, four pseudo differential inputs, or seven pseudo differential inputs.

3. 500 kSPS serial interface. SPI®-/QSPI™-/DSP-/MICROWIRE™- compatible interface.

4. Low power, 18 mW, at a maximum throughput rate of 500 kSPS.

5. Channel sequencer.