AD7323
500 kSPS, 4-Channel, Software Selectable True bipolar Input, 12-Bit Plus Sign A/D Converter
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Overview
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 - 500 kSPS throughput rate
- Four analog input channels with channel sequencer
- Single-ended, true differential, and pseudo differential analog input capability
- High analog input impedance
- Low power: 18 mW
- Full power signal bandwidth: 22 MHz
- Internal 2.5 V reference
- High speed serial interface
- Power-down modes
- 16-lead TSSOP package
- iCMOS process technology
Product Details
The AD7323 is a 4-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 AD7323 can accept true bipolar analog input signals. The AD7323 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 AD7323 can be programmed to be single-ended, true differential, or pseudo differential.
The ADC contains a 2.5 V internal reference. The AD7323 also allows for external reference operation. If a 3 V reference is applied to the REFIN/OUT pin, the AD7323 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.
PRODUCT HIGHLIGHTS
- The AD7323 can accept true bipolar analog input signals, ±10 V, ±5 V, and ±2.5 V, and 0 V to +10 V unipolar signals.
- The four analog inputs can be configured as four single-ended inputs, two true differential input pairs, two pseudo differential inputs, or three pseudo differential inputs.
- 500 kSPS serial interface. SPI-/QSPI™-/DSP-/MICROWIRE™-compatible interface.
- Low power, 18 mW, at a maximum throughput rate of 500 kSPS.
- Channel sequencer.
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
Software & Systems Requirements
Evaluation Software
Tools & Simulations
IBIS Models
IBS
AD732x IBIS Model
73.9 K
Product Recommendations
AD7323 Companion Parts
Recommended Input Buffer Amplifiers
- For low noise and low power applications: ADA4841-1, ADA4932-1, ADA4841-2, AD8137.
- For low noise and high frequency: AD8021, ADA4899-1, AD8022.
- For low noise and low frequency applications at medium supply voltages( up to +-13V): AD8610, AD8620.
- For low noise and low frequency at high supply voltages( up to +-18V): AD8597, ADA4627-1, AD8599.
Recommended External References
Design Resources
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PCN-PDN Information
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.