AD7450AR

更新时间： 2024-11-25 22:49:59

品牌	Logo	应用领域
亚德诺 - ADI		转换器光电二极管
页数	文件大小	规格书
24页	428K
描述
Differential Input, 1MSPS, 12-Bit ADC in レSO-8 and S0-8

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替代型号

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AD7450AR 数据手册

PRELIMINARY TECHNICAL DATA

Differential Input, 1MSPS,

PreliminaryTechnicalData

12-Bit ADC in µSO-8 and S0-8

AD7450

FEATURES

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

Fast Throughput Rate: 1MSPS

Specified for V_DDof 3 V and 5 V

Low Pow er at m ax Throughput Rate:

3 m W typ at 833kSPS w ith 3 V Supplies

8 m W typ at 1MSPS w ith 5 V Supplies

Fully Differential Analog Input

Wide Input Bandw idth:

12-BIT SUCCESSIVE

IN+

APPROXIMATION

ADC

T/H

70d B S INAD a t 300kHz In p u t Fre q u e n cy

Flexible Pow er/ Serial Clock Speed Managem ent

No Pipeline Delays

IN-

REF

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

Micro Wire ^TM

/ DS P Co m p a t ib le

SCLK

SDATA

Po w e rd o w n Mo d e : 1µA m a x

8 Pin µSOIC and SOIC Packages

CONTROL

LOGIC

AD7450

APPLICATIONS

Transducer Interface

Battery Pow ered System s

Data Acquisition System s

Portable Instrum entation

Motor Control

Com m unications

GND

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

T he AD7450 is a 12-bit, high speed, low power, succes-

sive-approximation (SAR) analog-to-digital converter

featuring a fully differential analog input. It operates from

a single 3 V or 5 V power supply and features throughput

rates up to 833kSPS or 1MSPS respectively.

T he SAR architecture of this part ensures that there are

no pipeline delays.

T he AD7450 uses advanced design techniques to achieve

very low power dissipation at high throughput rates.

T his part 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 for the

AD7450 is applied externally to the V_REFpin and can be

varied from 100 mV to 2.5 V depending on the power

supply and to suit the application. T he value of the refer-

ence voltage determines the common mode voltage range

of the part. With this truly differential input structure and

variable reference input, the user can select a variety of

input ranges and bias points.

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

1.Operation with either 3 V or 5 V power supplies.

2.H igh T hroughput with Low Power Consumption.

With a 3V supply, the AD7450 offers 3mW typ power

consumption for 833kSPS throughput.

3.Fully D ifferential Analog Input.

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 his

part also features a shutdown mode to maximize power

efficiency at lower throughput rates.

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.Variable Voltage Reference Input.

6.N o Pipeline D elay.

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

and once off conversion control.

8. ENOB > 8 bits typ with 100mV Reference_.

MicroWire is a trademark of National Semiconductor Corporation.

SPI and QSPI are trademarks of Motorola, Inc.

REV. PrJ 27/02/02

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...24

中文翻译

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AD7450AR 替代型号

型号	品牌	替代类型	描述	数据表
AD7450ARZ-REEL	ADI	完全替代	Differential Input, 1 MSPS ADC in SOIC-8 and SO-8
AD7450ARZ	ADI	完全替代	Differential Input, 1 MSPS ADC in SOIC-8 and SO-8

与AD7450AR相关器件

型号	品牌	获取价格	描述	数据表
AD7450ARM	ADI	获取价格	Differential Input, 1MSPS, 12-Bit ADC in レSO-
AD7450ARM-REEL	ADI	获取价格	暂无描述
AD7450ARM-REEL	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MICRO, SOI
AD7450ARM-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MICRO, SOI
AD7450ARMZ	ADI	获取价格	Differential Input, 1 MSPS 12-Bit ADC in SOIC-8 and SO-8
AD7450ARMZ-REEL7	ADI	获取价格	Differential Input, 1 MSPS 12-Bit ADC in SOIC-8 and SO-8
AD7450AR-REEL	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, SOIC-8
AD7450AR-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, SOIC-8
AD7450ARZ	ADI	获取价格	Differential Input, 1 MSPS ADC in SOIC-8 and SO-8
AD7450ARZ-REEL	ADI	获取价格	Differential Input, 1 MSPS ADC in SOIC-8 and SO-8

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