Datasheet > AD7923_11

AD7923_11

更新时间： 2024-11-24 12:27:19

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	380K
描述
4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP

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AD7923_11 数据手册

4-Channel, 200 kSPS 12-Bit ADC

with Sequencer in 16-Lead TSSOP

AD7923

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast throughput rate: 200 kSPS

Specified for AV_DDof 2.7 V to 5.25 V

Low power

REF

3.6 mW max at 200 kSPS with 3 V supply

7.5 mW max at 200 kSPS with 5 V supply

4 (single-ended) inputs with sequencer

Wide input bandwidth

70 dB Min SNR at 50 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface SPI^®-/QSPI^TM-/

MICROWIRE^TM-/DSP-compatible

Shutdown mode: 0.5 μA max

•

T/H

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

I/P

MUX

SCLK

DOUT

DIN

16-lead TSSOP package

Qualified for automotive applications

CONTROL LOGIC

SEQUENCER

AD7923

GENERAL DESCRIPTION

DRIVE

The AD7923 is a 12-bit, high speed, low power, 4-channel, suc-

cessive approximation (SAR) ADC. It operates from a single

2.7 V to 5.25 V power supply and features throughput rates up to

200 kSPS. It contains a low noise, wide bandwidth track-and-hold

amplifier that can handle input frequencies in excess of 8 MHz.

GND

Figure 1.

PRODUCT HIGHLIGHTS

1. High Throughput with Low Power Consumption.

The AD7923 offers up to 200 kSPS throughput rates. At the

maximum throughput rate with 3 V supplies, the AD7923

dissipates just 3.6 mW of power.

The conversion process and data acquisition are controlled by

and the serial clock, allowing the device to easily interface

with microprocessors or DSPs. The input signal is sampled on

2. Four Single-Ended Inputs with a Channel Sequencer.

the falling edge of ; the conversion is also initiated at this

3. Single-Supply Operation with V_DRIVEFunction.

The V_DRIVEfunction allows the serial interface to connect

directly to either 3 V or 5 V processor systems independent

point.

The AD7923 uses advanced design techniques to achieve very

low power dissipation at maximum throughput rates. At

maximum throughput rates, it consumes 1.2 mA maximum

with 3 V supplies and 1.5 mA maximum with 5 V supplies.

of AV_DD

4. Flexible Power/Serial Clock Speed Management.

The conversion rate is determined by the serial clock,

allowing the conversion time to be reduced through the

serial clock speed increase. The part also features various

shutdown modes to maximize power efficiency at lower

throughput rates. Current consumption is 0.5 μA

maximum when in full shutdown.

Through the configuration of the control register, the analog

input range can be selected as 0 V to REF_INor 0 V to 2 × REF_IN,

with either straight binary or twos complement output coding.

The AD7923 features four single-ended analog inputs with a

channel sequencer to allow a preprogrammed selection of

channels to be converted sequentially.

5. No Pipeline Delay.

The part features a SAR ADC with accurate control of the

The conversion time for the AD7923 is determined by the serial

clock, SCLK, frequency, since this is used as the master clock to

control the conversion. The conversion time can be as short as

800 ns with a 20 MHz SCLK.

sampling instant via a

control.

input and once off conversion

Rev. C

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 owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

12 3 4 5 6 7...24

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与AD7923_11相关器件

型号	品牌	获取价格	描述	数据表
AD7923BRU	ADI	获取价格	4-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7923BRU-REEL	ADI	获取价格	IC 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16, MO-153AB, TSSOP-16, An
AD7923BRUZ	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7923BRUZ-REEL	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7923BRUZ-REEL7	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7923SRU-EP	ADI	获取价格	4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP
AD7923SRUZ-EP	ADI	获取价格	4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP
AD7923SRUZ-EP-RL7	ADI	获取价格	4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP
AD7923WYRUZ-REEL7	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7924	ADI	获取价格	4-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 16-Lead TSSOP

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