Datasheet > EVAL-AD7898CB

EVAL-AD7898CB

更新时间： 2024-11-23 22:49:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
13页	425K
描述
Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package

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EVAL-AD7898CB 数据手册

Evaluation Board for 5V, 12-Bit, Serial

220kSPS ADC in 8-Pin Package

EVAL-AD7898CB

FEATURES

O P E RAT ING T H E AD 7898 E VALUAT IO N BO ARD

P ower Supplies

Full-Featured Evaluation Board for the AD7898

EVALUATION-BOARD CONTROLLER Com patible

Stand Alone Capability

On-Board Analog Buffering and Reference

Various Linking Options

When using this evaluation board with the EVALUA-

T ION -BOARD C ON T ROLLER all supplies are pro-

vided from the EVALU AT ION -BOARD

CONT ROLLER through the 96 way connector.

PC Softw are for Control and Data Analysis w hen used

w ith EVALUATION-BOARD CONTROLLER

Patchw ork Area for User Expansion

When using the board as a stand alone unit external sup-

plies must be provided. T his evaluation board has seven

power supply inputs:

V_DD, A_GND, +12V, -12V, A_GND, and

INTRODUCTION

V_DRIVEIf the evaluation board is used in stand-alone

T his T echnical Note describes the evaluation board for

the AD7898 which is a fast 12-bit ADC that operates from a

single +5 V supply and is housed in an 8-pin SOIC. Full data

on the AD7898 is available in the AD7898 data sheet

available from Analog Devices and should be consulted in

conjunction with this T echnical Note when using the

Evaluation Board.

mode +5V must be connected to the V_DDinput to supply

the AD7898 V_DDpin and the AD780 voltage reference.

+12V and -12V are used to supply the op-amps. T he

V_DRIVEpin can be driven by a voltage between +3V and

+5V allowing the evaluation board to be connected to

both +3V and +5V systems. T he supplies are decoupled to

the relevant ground plane with 10µF tantalum and 0.1µF

multilayer ceramic capacitors at the point where they enter

the board. T he supply pins of all the op-amps and refer-

ence are also decoupled to A_GNDwith 10µF tantalum and a

0.1µF ceramic capacitor. T he AD7898 AV_DDsupply pin is

decoupled to A_GNDwith 10 µF tantalum and 0.1µF multi-

layer ceramic capacitors.

On-board components include an AD780 which is a pin

programmable +2.5V or +3V ultra high precision

bandgap reference and an AD711 op-amp used to buffer

the analog input. T here are various link options which are

explained in detail on page 2.

Interfacing to this board is through a 96-way connector.

T his 96-way connector is compatible with the EVALUA-

T ION -BOARD C ON T ROLLER which is also available

from Analog Devices. External sockets are provided for

the CS/CONVST input, VDRIVE input, SDAT A input,

SCLK input, REFIN input and the VIN input.

Extensive ground planes are used on this board to mini-

mize the effect of high frequency noise interference. T here

are two ground planes, A_GNDand D_GND

. T hese are con-

nected at one location close to the AD7898.

FUNCTIONAL BLOCK DIAGRAM

ANALOG

INPUT

Vdd

ad7898

SDATA

SCLK

Vdrive

EXTERNAL

REFERENCE

Vdd

REV. 0

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, Norwood. MA 02062-9106, U.S.A.

Tel: 617/329-4700 Fax: 617/326-8703

12 3 4 5 6 7...13

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与EVAL-AD7898CB相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD7899CB	ADI	获取价格	Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package
EVAL-AD7910CB	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
EVAL-AD7912_15	ADI	获取价格	Evaluation Board for 1 MSPS, 2-Channel, 12-/10-Bit ADCs
EVAL-AD7915SDZ	ADI	获取价格	EVAL BOARD AD7915SDZ
EVAL-AD7916SDZ	ADI	获取价格	EVAL BOARD AD7916SDZ
EVAL-AD7920CB	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
EVAL-AD7922_15	ADI	获取价格	Evaluation Board for 1 MSPS, 2-Channel, 12-/10-Bit ADCs
EVAL-AD7923CB2	ADI	获取价格	4-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP
EVAL-AD7923CBZ	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
EVAL-AD7933CB	ADI	获取价格	4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer

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