Datasheet > AD7443BRT

AD7443BRT

更新时间： 2024-11-24 21:12:07

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
10页	404K
描述
IC 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOT-23, 8 PIN, Analog to Digital Converter

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AD7443BRT 数据手册

PRELIMINARY TECHNICAL DATA

Pseudo Differential, 600kSPS,

PreliminaryTechnicalData

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

AD7453/AD7443

FEATU RES

F U NC T IO NAL B LO C K D IAG RAM

Specified for V_DDof 2.7 V to 5.25 V

Lo w Po w e r a t m a x Th ro u g h p u t Ra t e :

3.75 m W typ at 1MSPS w ith V_DD= 3 V

9 m W typ at 1MSPS w ith V_DD= 5 V

Ps e u d o Diffe re n t ia l An a lo g In p u t

Wide Input Bandw idth:

12-BIT SUCCESSIVE

APPROXIMATION

ADC

IN+

70d B S INAD a t 100kHz In p u t Fre q u e n cy

Flexible Pow er/ Serial Clock Speed Managem ent

No Pipeline Delays

T/H

IN-

REF

Hig h S p e e d S e ria l In t e rfa ce - S PI^TM/ QS PI^TM

MICROWIRE^TM

/ DS P Co m p a t ib le

Po w e r-Do w n Mo d e : 1µA m a x

8 Pin S OT-23 a n d µS OIC Pa cka g e s

SCLK

SDATA

CONTROL

LOGIC

AP P LICATIO N S

AD7453/

AD7443

Tra n s d u c e r In t e rfa c e

Battery Pow ered System s

Data Acquisition System s

Portable Instrum entation

Motor Control

Co m m u n ic a t io n s

GND

G E NE R AL D E S C R IP T IO N

T he AD7453/43 use advanced design techniques to achieve

very low power dissipation at high throughput rates.

T he AD7453/AD7443 are respectively 12- and 10-bit, low

power, successive-approximation (SAR) analog-to-digital

converters that feature a pseudo differential analog input.

T hese parts operate from a single 2.7 V to 5.25 V power

supply and feature throughput rates up to 600kSPS.

P R O D U C T H IG H LIG H T S

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

2.Low Power Consumption.

With a 3V supply, the AD7453/43 offer 3.75mW typ

power consumption for 600kSPS throughput.

3.Pseudo Differential Analog Input.

T he V_IN-input can be used as an offset from ground

4.Flexible Power/Serial C lock Speed M anagement.

T he 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. T hese

parts also feature a shutdown mode to maximize power

efficiency at lower throughput rates.

T he 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. T he reference voltage is 2.5 V

and is applied externally to the V_REFpin.

T he conversion process and data acquisition are controlled

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

face with Microprocessors or DSPs. T he input signals are

sampled on the falling edge of CS and the conversion is

also initiated at this point.

5.N o Pipeline D elay.

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

and once off conversion control.

T he 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. PrA 24/05/02

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for its

use, nor for any infringem ents of patents or other rights of third parties

which m ay result from its use. No license is granted by im plication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/ 329-4700

Fax: 781/ 326-8703

w w w .analog.com

12 3 4 5 6 7...10

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