Datasheet > AD7175-8BCPZ-RL7

AD7175-8BCPZ-RL7

更新时间： 2024-11-04 19:46:47

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
65页	1052K
描述
24-Bit, 8-/16-Channel, 250 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers

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AD7175-8BCPZ-RL7 数据手册

24-Bit, 8-/16-Channel, 250 kSPS, Sigma-

Delta ADC with True Rail-to-Rail Buffers

AD7175-8

Data Sheet

FEATURES

GENERAL DESCRIPTION

Fast and flexible output rate: 5 SPS to 250 kSPS

The AD7175-8 is a low noise, fast settling, multiplexed, 8-/16-

Channel scan data rate of 50 kSPS/channel (20 µs settling)

Performance specifications

17.2 noise free bits at 250 kSPS

20.2 noise free bits at 2.5 kSPS

24 noise free bits at 20 SPS

INL: 1 ppm of FSR

85 dB filter rejection of 50 Hz and 60 Hz with 50 ms settling

User configurable input channels

8 fully differential channels or 16 single-ended channels

Crosspoint multiplexer

On-chip 2.5 V reference ( 2 ppm/°C drift)

True rail-to-rail analog and reference input buffers

Internal or external clock

channel (fully/pseudo differential) Σ-Δ analog-to-digital

converter (ADC) for low bandwidth inputs. It has a maximum

channel scan rate of 50 kSPS (20 µs) for fully settled data. The

output data rates range from 5 SPS to 250 kSPS.

The AD7175-8 integrates key analog and digital signal condition-

ing blocks to allow users to configure an individual setup for

each analog input channel in use. Each feature can be user selected

on a per channel basis. Integrated true rail-to-rail buffers on the

analog inputs and external reference inputs provide easy to drive

high impedance inputs. The precision 2.5 V low drift (2 ppm/°C)

band gap internal reference (with output reference buffer) adds

embedded functionality to reduce external component count.

The digital filter allows simultaneous 50 Hz and 60 Hz rejection

at a 27.27 SPS output data rate. The user can switch between

different filter options according to the demands of each channel

in the application. The ADC automatically switches through

each selected channel. Further digital processing functions

include offset and gain calibration registers, configurable on a

per channel basis.

Power supply: AVDD1 − AVSS = 5 V, AVDD2 = IOVDD = 2 V to

5 V (nominal)

Split supply with AVDD1/AVSS at 2.5 V

ADC current: 8.4 mA

Temperature range: −40°C to +105°C

3- or 4-wire serial digital interface (Schmitt trigger on SCLK)

Serial port interface (SPI), QSPI, MICROWIRE, and DSP

compatible

The device operates with a 5 V AVDD1 − AVSS supply, or with

2.5 V AVDD1/AVSS, and 2 V to 5 V AVDD2 and IOVDD

nominal supplies. The specified operating temperature range is

−40°C to +105°C. The AD7175-8 is available in a 40-lead LFCSP

package.

APPLICATIONS

Process control: PLC/DCS modules

Temperature and pressure measurement

Medical and scientific multichannel instrumentation

Chromatography

FUNCTIONAL BLOCK DIAGRAM

AVDD2 REGCAPA REF– REF+ REFOUT

AVDD1

IOVDD REGCAPD

CROSSPOINT

MULTIPLEXER

BUFFERED

PRECISION

REFERENCE

1.8V

LDO

1.8V

LDO

REFERENCE

INPUT

BUFFERS

AIN0/REF2–

AIN1/REF2+

AVDD

INT

REF

SCLK

DIN

SERIAL

INTERFACE

AND CONTROL

DIGITAL

FILTER

Σ-Δ ADC

DOUT/RDY

SYNC

ERROR

AIN15

AIN16

ANALOG

INPUT

BUFFERS

AVSS

XTAL AND INTERNAL

CLOCK OSCILLATOR

CIRCUITRY

I/O AND EXTERNAL

MUX CONTROL

AD7175-8

TEMPERATURE

SENSOR

AVSS

PDSW

GPIO0GPIO1GPO2GPO3

XTAL1 XTAL2/CLKIO

DGND

Figure 1.

Rev. 0

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

rightsof third parties that may result fromits 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 andregisteredtrademarks 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

Technical Support

www.analog.com

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AD7175-8BCPZ-RL7 替代型号

型号	品牌	替代类型	描述	数据表
AD7175-8BCPZ	ADI	完全替代	24-Bit, 8-/16-Channel, 250 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers
AD7175-8BCPZ-RL	ADI	完全替代	24-Bit, 8-/16-Channel, 250 kSPS, Sigma-Delta ADC with True Rail-to-Rail Buffers

与AD7175-8BCPZ-RL7相关器件

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AD7177-2BRUZ	ADI	获取价格	32-Bit, 10 kSPS, Sigma-Delta ADC with 100 &am
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