AD7322
PRODUCTIONSoftware Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
- Part Models
- 2
- 1ku List Price
- Starting From $5.83
Overview
- 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
The AD7322 is a 2-channel, 12-bit plus sign, successive approximation analog-to-digital converter (ADC) designed on the iCMOS™ (industrial CMOS) process. iCMOS 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, iCMOS 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
- 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.
- The two analog inputs can be configured as two single-ended inputs, one true differential input, or one pseudo differential input.
- 1 MSPS serial interface. SPI-/QSPI™-/DSP-/MICROWIRE™-compatible interface.
- Low power, 31 mW maximum, at 1 MSPS throughput rate.
- Channel sequencer.
Documentation
Data Sheet 1
Technical Articles 1
Evaluation Design File 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7322BRUZ | 14-Lead TSSOP | ||
| AD7322BRUZ-REEL7 | 14-Lead TSSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 5, 2021 - 21_0035 Amkor Philippines as an Alternate Site for TSSOP_4.4 |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
|
Sep 16, 2014 - 14_0174 AD7321, AD7322, AD7323, AD7324, AD7327, AD7328, AD7329 Die Revision |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
|
Jan 13, 2014 - 13_0168 Update of AD7321/2/3/4/7/8/9 Datasheets for Clarification of Available Register Map |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
|
Jan 20, 2012 - 11_0218 Halogen Free Material Change for Certain TSSOP Products at Carsem |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
|
Oct 13, 2009 - 09_0215 AD7329,AD7328,AD7327,AD7324,AD7323,AD7322,AD7321 Data sheet specification change |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
|
Oct 13, 2008 - 06_0084 Qualification of the 8" H Wafer Fab process at Analog Devices, Limerick, Ireland. |
||
| AD7322BRUZ | PRODUCTION | |
| AD7322BRUZ-REEL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
AD7322 Evaluation Software
Can't find the software or driver you need?
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Differential Amplifiers 2 | ||
| ADA4932-1 | RECOMMENDED FOR NEW DESIGNS | Low Power Differential ADC Driver |
| AD8137 | PRODUCTION | Low Cost, Low Power Differential ADC Driver |
| Operational Amplifiers (Op Amps) 10 | ||
| AD8597 | PRODUCTION | Ultralow Distortion, Ultralow Noise Op Amp (single) |
| ADA4627-1 | PRODUCTION | 36 V, 19 MHz, Low Noise, Low Bias Current, JFET Op Amp |
| AD8599 | PRODUCTION | Ultralow Distortion, Ultralow Noise Op Amp (Dual) |
| ADA4841-1 | PRODUCTION | Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier |
| ADA4841-2 | PRODUCTION | Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifier |
| AD8021 | PRODUCTION | Low Noise, High Speed Amplifier for 16-Bit Systems |
| ADA4899-1 | PRODUCTION | Unity-Gain Stable, Ultralow Distortion, 1 nV/√Hz Voltage Noise, High Speed Op Amp |
| AD8022 | PRODUCTION | Dual High Speed, Low Noise Op Amp |
| AD8610 | PRODUCTION | Precision, Low Input Bias Current, Wide BW JFET Single Op Amp |
| AD8620 | PRODUCTION | Low Input Bias Current, Wide BW JFET Precision Dual Op Amp |
| Voltage References 5 | ||
| AD780 | PRODUCTION | 2.5 V/3.0 V High Precision Reference |
| REF193 | PRODUCTION | 3.0V Precision Micropower, Low Dropout, Low Voltage Reference |
| AD1582 | PRODUCTION | 2.5V Micropower, Precisions Series Mode Voltage References |
| ADR431 | PRODUCTION | Ultralow Noise XFET® Voltage References with Current Sink and Source Capability |
| ADR391 | PRODUCTION | 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown |
Tools & Simulations
IBIS Model 1
Evaluation Kits
AD7328 Evaluation Board
Resources
Software
AD7322 Evaluation Board