AD7451ARM

更新时间： 2024-11-26 12:58:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
15页	198K
描述
IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187AA, MSOP-8, Analog to Digital Converter

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替代型号

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AD7451ARM 数据手册

PRELIMINARY TECHNICAL DATA

Pseudo Differential, 1MSPS,

PreliminaryTechnicalData

12- & 10-Bit ADCs in 8-lead SOT-23

AD7451/AD7441

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast Throughput Rate: 1MSPS

Specified for V_DDof 2.7 V to 5.25 V

Low Power at max Throughput Rate:

3.75 mW typ at 1MSPS with V_DD= 3 V

9 mW typ at 1MSPS with V_DD= 5 V

Pseudo Differential Analog Input

Wide Input Bandwidth:

12-BIT SUCCESSIVE

APPROXIMATION

ADC

IN+

T/H

70dB SINAD at 300kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

IN-

REF

High Speed Serial Interface - SPI^TM/QSPI^TM

MICROWIRE^TM/ DSP Compatible

Power-Down Mode: 1µA max

SCLK

SDATA

8 Pin SOT-23 and µSOIC Packages

CONTROL

LOGIC

AD7451/

AD7441

APPLICATIONS

Transducer Interface

BatteryPoweredSystems

DataAcquisitionSystems

PortableInstrumentation

Motor Control

Communications

GND

GENERAL DESCRIPTION

The AD7451/41 use advanced design techniques to achieve

very low power dissipation at high throughput rates.

The AD7451/AD7441 are respectively 12- and 10-bit,

high speed, low power, successive-approximation (SAR)

analog-to-digital converters that feature a pseudo differen-

tial analog input. These parts operate from a single 2.7 V

to 5.25 V power supply and feature throughput rates up to

1MSPS.

PRODUCT HIGHLIGHTS

1.Operation with 2.7 V to 5.25 V power supplies.

2.High Throughput with Low Power Consumption.

With a 3V supply, the AD7451/41 offer 3.75mW typ

power consumption for 1MSPS throughput.

3.Pseudo Differential Analog Input.

The V_IN-input can be used as an offset from ground

4.Flexible Power/Serial Clock Speed Management.

The conversion rate is determined by the serial clock,

allowing the power to be reduced as the conversion time

is reduced through the serial clock speed increase. These

parts also feature a shutdown mode to maximize power

efficiency at lower throughput rates.

The parts contains a low-noise, wide bandwidth, differen-

tial track and hold amplifier (T/H) which can handle

input frequencies in excess of 1MHz with the -3dB point

being 20MHz typically. The reference voltage is 2.5 V

and is applied externally to the V_REFpin.

The conversion process and data acquisition are controlled

using CS and the serial clock allowing the device to inter-

face with Microprocessors or DSPs. The input signals are

sampled on the falling edge of CS and the conversion is

also initiated at this point.

5.No Pipeline Delay.

6.Accurate control of the sampling instant via a CS input

and once off conversion control.

The SAR architecture of these parts ensures that there are

no pipeline delays.

MICROWIRE is a trademark of National Semiconductor Corporation.

SPI and QSPI are trademarks of Motorola, Inc.

REV. PrC 24/05/02

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

12 3 4 5 6 7...15

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AD7451ARM 替代型号

型号	品牌	替代类型	描述	数据表
AD7451ARMZ	ADI	完全替代	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23

与AD7451ARM相关器件

型号	品牌	获取价格	描述	数据表
AD7451ARM-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-187AA,
AD7451ARMZ	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23
AD7451ART-R2	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-178BA, SOT-23, 8 PIN
AD7451ART-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-178BA,
AD7451ARTZ-REEL7	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23
AD7451BRM	ADI	获取价格	Pseudo Differential, 1MSPS, 12- & 10-Bit ADCs in 8-lead SOT-23
AD7451BRM-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-187AA,
AD7451BRMZ	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23
AD7451BRT	ADI	获取价格	Pseudo Differential, 1MSPS, 12- & 10-Bit ADCs in 8-lead SOT-23
AD7451BRT-R2	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-178BA, SOT-23, 8 PIN

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