Datasheet > AD7190WBRUZ

AD7190WBRUZ

更新时间： 2024-11-04 20:01:43

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管转换器
页数	文件大小	规格书
41页	674K
描述
4.8 kHz Ultralow Noise 24-Bit Sigma-Delta ADC with PGA

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AD7190WBRUZ 数据手册

4.8 kHz Ultralow Noise 24-Bit

Sigma-Delta ADC with PGA

Data Sheet

AD7190

Temperature measurement

Chromatography

PLC/DCS analog input modules

Data acquisition

Medical and scientific instrumentation

FEATURES

RMS noise: 8.5 nV @ 4.7 Hz (gain = 128)

16 noise free bits @ 2.4 kHz (gain = 128)

Up to 22.5 noise free bits (gain = 1)

Offset drift: 5 nV/°C

Gain drift: 1 ppm/°C

Specified drift over time

GENERAL DESCRIPTION

The AD7190 is a low noise, complete analog front end for high

precision measurement applications. It contains a low noise,

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

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

amplitude can be interfaced directly to the ADC.

2 differential/4 pseudo differential input channels

Automatic channel sequencer

Programmable gain (1 to 128)

Output data rate: 4.7 Hz to 4.8 kHz

Internal or external clock

The device can be configured to have two differential inputs or

four pseudo differential inputs. The on-chip channel sequencer

allows several channels to be enabled, and the AD7190

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.

Simultaneous 50 Hz/60 Hz rejection

4 general-purpose digital outputs

Power supply

AV_DD: 4.75 V to 5.25 V

DV_DD: 2.7 V to 5.25 V

Current: 6 mA

Temperature range: –40°C to +105°C

Interface

3-wire serial

SPI, QSPI™, MICROWIRE™, and DSP compatible

Schmitt trigger on SCLK

The device has two digital filter options. The choice of filter

affects the rms noise/noise-free resolution at the programmed

output data rate, the settling time, and the 50 Hz/60 Hz

rejection. For applications that require all conversions to be

settled, the AD7190 includes a zero latency feature.

Qualified for automotive applications

APPLICATIONS

The part operates with 5 V analog power supply and a digital

power supply from 2.7 V to 5.25 V. It consumes a current of

6 mA. It is housed in a 24-lead TSSOP package.

Weigh scales

Strain gauge transducers

Pressure measurement

FUNCTIONAL BLOCK DIAGRAM

AGND AV

DGND REFIN1(+) REFIN1(–)

REFERENCE

DETECT

AD7190

AIN1

AIN2

AIN3

DOUT/RDY

SERIAL

INTERFACE

AND

CONTROL

LOGIC

AIN4

MUX

DIN

Σ-∆

ADC

AINCOM

PGA

SCLK

SYNC

TEMP

SENSOR

BPDSW

CLOCK

CIRCUITRY

AGND

MCLK1 MCLK2 P0/REFIN2(–) P1/REFIN2(+)

Figure 1.

Rev. C

Document Feedback

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.

Technical Support

www.analog.com

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AD7190WBRUZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7190WBRUZ-RL	ADI	完全替代	1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, TSSOP-24
AD7190BRUZ-REEL	ADI	类似代替	4.8 kHz Ultralow Noise 24-Bit Sigma-Delta ADC with PGA
AD7190BRUZ	ADI	类似代替	4.8 kHz Ultralow Noise 24-Bit Sigma-Delta ADC with PGA

与AD7190WBRUZ相关器件

型号	品牌	获取价格	描述	数据表
AD7190WBRUZ-RL	ADI	获取价格	1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, TSSOP-24
AD7191	ADI	获取价格	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors
AD7191BRUZ	ADI	获取价格	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors
AD7191BRUZ	ROCHESTER	获取价格	1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, PLASTIC, MO-153AD, TSS
AD7191BRUZ-REEL	ADI	获取价格	Pin-Programmable, Ultralow Noise, 24-Bit, Sigma-Delta ADC for Bridge Sensors
AD7191BRUZ-REEL	ROCHESTER	获取价格	1-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24, ROHS COMPLIANT, PLASTIC, MO-153AD, TSS
AD7192	ADI	获取价格	4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7192BRUZ	ADI	获取价格	4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7192BRUZ-REEL	ADI	获取价格	4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
AD7193	ADI	获取价格	4-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA

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