Datasheet > EVAL-AD7322CB1

EVAL-AD7322CB1

更新时间： 2024-11-30 22:16:23

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
18页	844K
描述
Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC

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EVAL-AD7322CB1 数据手册

Software Selectable True Bipolar Input,

2-Channel, 12-Bit Plus Sign ADC

Preliminary Technical Data

AD7322*

FEATURES

FUNCTIONAL BLOCK DIAGRAM

• 12-Bit Plus Sign SAR ADC

• True Bipolar Analog Inputs

• Software Selectable Input Ranges

1ꢀ0, ꢁ0, 2.ꢁ0, ꢀ to 1ꢀ0

• Two Analog Inputs with Channel Sequencer

• Single Ended, True Differential and Pseudo Differential

Capability.

• High Analog Input Impedance

• Low Power:- 6 mW

• Full Power Signal Bandwidth: >13 MHz

• Internal 2.ꢁ 0 Reference

• High Speed Serial Interface

• Power Down Modes

• 14-Lead TSSOP

• For 8 and 4 channel equivalent devices see AD7328 and

AD7324 respectively.

Figure 1.

The Serial clock frequency, SCLK, applied to the ADC will

determine the maximum throughput rate the ADC can operate

at. The SCLK signal is used as the conversion clock and also to

transfer data to and from the ADC. The Serial interface is

SPI^TM, QSPI^TM, MICROWIRE^TMand DSP compatible.

GENERAL DESCRIPTION

The AD7322 is a 2-Channel, 12-Bit Plus Sign, 1 MSPS

Successive Approximation ADC. The ADC has a high speed

serial interface that can operate at throughput rates up to 1

MSPS.

The AD7322 offers power down modes to reduce the power

consumption of the ADC at lower throughput rates.

The AD7322 can handle True Bipolar Analog input signals. The

Bipolar ranges are software selectable by programming the on

board Range Register. Bipolar input ranges include 1ꢀ0, ꢁ0,

2.ꢁ0. The AD7322 can also handle a ꢀ to 1ꢀ 0 uniploar input

range, which is also software selectable. Each analog input

channel can be independently programmed to one of the input

ranges by setting the appropriate bits in the Range Register.

PRODUCT HIGHLIGHTS

1. The AD7322 can accept True Bipolar Analog Input signals,

1ꢀ0, ꢁ0, 2.ꢁ0 and ꢀ to 1ꢀ0 unipolar signals.

2. The Two Analog Inputs can be configured as Two Single-

Ended inputs, One True Differential or One Pseudo Differential

Input. The AD7322 has high Impedance Analog Inputs.

The Analog Input Channels can be configured as Single-Ended,

Fully Differential or Pseudo Differential. Dedicated Control

AD7322 contains a Channel Sequencer, allowing automatic

conversions between each analog input channel.

3. The AD7322 features a High Speed Serial Interface.

Throughput Rates up to 1 MSPS can be achieved on the

AD7322.

The ADC contains a 2.ꢁ0 Internal reference. The AD7322 also

allows for external Reference operation. If a 30 external

reference is applied to the REFIN/OUT pin, the ADC can

handle a True Bipolar 12 0 Analog input range. Minimum

0_DDand 0_SSsupplies of 120 are required for this 12 0 input

range.

4. Low Power, 12 mW at maximum throughput rate of 1 MSPS.

* Patent Pending

Rev. PrE

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective companies.

One Technology Way, P.O. Box 91ꢀ6, Norwood, MA ꢀ2ꢀ62-91ꢀ6, U.S.A.

Tel: 781.329.47ꢀꢀ

Fax: 781.326.87ꢀ3

www.analog.com

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与EVAL-AD7322CB1相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD7322CBZ	ADI	获取价格	2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
EVAL-AD7323CB	ADI	获取价格	500 kSPS, 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
EVAL-AD7324CB	ADI	获取价格	4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
EVAL-AD7327CB	ADI	获取价格	500 kSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
EVAL-AD7328CB	ADI	获取价格	8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC
EVAL-AD7329SDZ	ADI	获取价格	1 MSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
EVAL-AD73311EB	ADI	获取价格	Low Cost, Low Power CMOS General Purpose Analog Front End
EVAL-AD73311EZ	ADI	获取价格	Low Cost, Low Power CMOS General Purpose Analog Front End
EVAL-AD73311LEB	ADI	获取价格	Low Cost, Low Power CMOS General Purpose Analog Front End
EVAL-AD73322EB	ADI	获取价格	EvaluationBoardforLowCost,LowPower, CMOSGerneralPurposeDualAnalogFrontEnd

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