AD7193

更新时间： 2024-11-04 06:36:11

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
56页	742K
描述
4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA

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AD7193 数据手册

4-Channel, 4.8 kHz, Ultralow Noise,

24-Bit Sigma-Delta ADC with PGA

AD7193

Temperature measurement

FEATURES

Flow measurement

Weigh scales

°hromatography

Medical and scientific instrumentation

Fast settling filter option

4 differential/8 pseudo differential input channels

RMS noise: 11 nV @ 4.7 Hz (gain = 128)

15.5 noise-free bits @ 2.4 kHz (gain = 128)

Up to 22 noise-free bits (gain = 1)

Offset drift: 5 nV/ꢀ°

GENERAL DES°RIPTION

The AD7193 is a low noise, complete analog front end for high

precision measurement applications. It contains a low noise,

24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC).

The on-chip low noise gain stage means that signals of small

amplitude can interface directly to the ADC.

Gain drift: 1 ppm/ꢀ°

Specified drift over time

Automatic channel sequencer

Programmable gain (1 to 128)

Output data rate: 4.7 Hz to 4.8 kHz

Internal or external clock

Simultaneous 50 Hz/60 Hz rejection

4 general-purpose digital outputs

Power supply

AV_DD: 3 V to 5.25 V

DV_DD: 2.7 V to 5.25 V

°urrent: 4.65 mA

Temperature range: −40ꢀ° to +105ꢀ°

Package: 28-lead TSSOP

The device can be configured to have four differential inputs or

eight pseudo differential inputs. The on-chip channel sequencer

allows several channels to be enabled simultaneously, and the

AD7193 sequentially converts on each enabled channel. This

simplifies communication with the part. The on-chip 4.92 MHz

clock can be used as the clock source to the ADC or, alternatively,

an external clock or crystal can be used. The output data rate

from the part can be varied from 4.7 Hz to 4.8 kHz.

The device has a very flexible digital filter, including a fast

settling option. Variables such as output data rate and settling

time are dependent on the option selected. For applications that

require all conversions to be settled, the AD7193 includes zero

latency.

Interface

3-wire serial

SPI, QSPI™, MI°ROWIRE™, and DSP compatible

Schmitt trigger on S°LK

APPLI°ATIONS

The part operates with a power supply from 3 V to 5.25 V. It

consumes a current of 4.65 mA and it is housed in a 28-lead

TSSOP package.

PL°/D°S analog input modules

Data acquisition

Strain gage transducers

Pressure measurement

FUN°TIONAL BLO°K DIAGRAM

AGND

DGND

REFIN1(+) REFIN1(–)

AD7193

AIN1

AIN2

AIN3

DOUT/RDY

AIN4

AIN5

AIN6

AIN7

AIN8

SERIAL

INTERFACE

AND

CONTROL

LOGIC

MUX

DIN

Σ-Δ

ADC

PGA

SCLK

AINCOM

SYNC

TEMP

SENSOR

BPDSW

CLOCK

CIRCUITRY

AGND

MCLK1 MCLK2

P0/REFIN2(–) P1/REFIN2(+)

Figure 1.

Rev. A

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 registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与AD7193相关器件

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AD7193BCPZ	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7193BCPZ-RL	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7193BCPZ-RL7	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7193BRUZ	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7193BRUZ-REEL	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7194	ADI	获取价格	8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7194BCPZ	ADI	获取价格	8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7194BCPZ-REEL	ADI	获取价格	8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7194BCPZ-REEL7	ADI	获取价格	8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7195	ADI	获取价格	4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA and AC Excitation

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