AD7225KNZ

更新时间： 2024-09-20 12:47:31

品牌	Logo	应用领域
亚德诺 - ADI		转换器数模转换器光电二极管 PC
页数	文件大小	规格书
24页	400K
描述
LC2MOS Quad 8-Bit DAC with Separate Reference Inputs

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AD7225KNZ 数据手册

LC²MOS Quad 8-Bit DAC

with Separate Reference Inputs

AD7225

FEATURES

FUNCTIONAL BLOCK DIAGRAM

A V

REF

B V

REF

C V

REF

Four 8-bit DACs with output amplifiers

Separate reference input for each DAC

Microprocessor compatible with double-buffered inputs

Simultaneous update of all 4 outputs

Operates with single or dual supplies

Extended temperature range operation

No user trims required

INPUT

DAC

DAC A

DAC B

DAC C

DAC D

OUT

LATCH A

INPUT

LATCH B

DAC

LATCH B

DB7

DATA

(8-BIT)

INPUT

LATCH C

DAC

LATCH C

DB0

Skinny 24-lead PDIP, CERDIP, SOIC, and SSOP packages

28-lead PLCC package

INPUT

LATCH D

DAC

LATCH D

AD7225

CONTROL

LOGIC

LDAC

AGND DGND

Figure 1.

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7225 contains four 8-bit voltage output digital-to-

analog converters, with output buffer amplifiers and interface

logic on a single monolithic chip. Each DAC has a separate

reference input terminal. No external trims are required to

achieve full specified performance for the part.

1. DACs and Amplifiers on CMOS Chip.

The single-chip design of four 8-bit DACs and amplifiers

allows a dramatic reduction in board space requirements

and offers increased reliability in systems using multiple

converters. Its pinout is aimed at optimizing board layout

with all analog inputs and outputs at one end of the

package and all digital inputs at the other.

The double-buffered interface logic consists of two 8-bit

registers per channel—an input register and a DAC register.

Control Input A0 and Control Input A1 determine which input

2. Single- or Dual-Supply Operation.

The voltage-mode configuration of the AD7225 allows

single-supply operation. The part can also be operated with

dual supplies, giving enhanced performance for some

parameters.

goes low. Only the data held in the

DAC registers determines the analog outputs of the converters.

The double-buffering allows simultaneous update of all four

LDAC

outputs under control of

. All logic inputs are TTL and

CMOS (5 V) level compatible, and the control logic is speed

compatible with most 8-bit microprocessors.

3. Versatile Interface Logic.

The AD7225 has a common 8-bit data bus with individual

DAC latches, providing a versatile control architecture for

simple interface to microprocessors. The double-buffered

interface allows simultaneous update of the four outputs.

Specified performance is guaranteed for input reference

voltages from 2 V to 12.5 V when using dual supplies. The part

is also specified for single-supply operation using a reference of

10 V. Each output buffer amplifier is capable of developing 10 V

across a 2 kΩ load.

4. Separate Reference Input for Each DAC.

The AD7225 offers great flexibility in dealing with input

signals, with a separate reference input provided for each

DAC and each reference having variable input voltage

capability.

The AD7225 is fabricated on an all ion-implanted, high speed,

linear-compatible CMOS (LC²MOS) process, which is

specifically developed to integrate high speed digital logic

circuits and precision analog circuitry on the same chip.

Rev. C

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 that may result from its 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 and registeredtrademarks arethe property of their respective owners.

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

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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AD7225KNZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7225BQ	ADI	完全替代	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225LN	ADI	完全替代	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KN	ADI	完全替代	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs

与AD7225KNZ相关器件

型号	品牌	获取价格	描述	数据表
AD7225KP	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KP-REEL	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KPZ	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KR	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KR-REEL	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KRZ	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225KRZ-REEL	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225LCWG	MAXIM	获取价格	D/A Converter, 4 Func, PDSO24
AD7225LN	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
AD7225LNZ	ADI	获取价格	LC2MOS Quad 8-Bit DAC with Separate Reference Inputs

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