Datasheet > AD5533B

AD5533B

更新时间： 2022-04-23 23:00:11

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亚德诺 - ADI		/
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16页	354K
描述
32-Channel Precision Infinite Sample-and-Hold

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AD5533B 数据手册

32-Channel Precision

Infinite Sample-and-Hold

AD5533B^*

GENERAL DESCRIPTION

FEATURES

The AD5533B combines a 32-channel voltage translation function

with an infinite output hold capability. An analog input voltage on

the common input pin, V_IN, is sampled and its digital represen-

tation transferred to a chosen DAC register. V_OUTfor this DAC

is then updated to reflect the new contents of the DAC register.

Channel selection is accomplished via the parallel address inputs

A0–A4 or via the serial input port. The output voltage range is

determined by the offset voltage at the OFFS_IN pin and the gain

of the output amplifier. It is restricted to a range from V_SS+ 2 V

to V_DD– 2 V because of the headroom of the output amplifier.

Infinite Sample-and-Hold Capability to ؎0.018% Accuracy

Infinite Sample-and-Hold Total Unadjusted Error ؎2.5 m V

High Integration:

32-Channel DAC in 12 mm

12 mm CSPBGA

Per Channel Acquisition Time of 16 ␮s Max

Adjustable Voltage Output Range

Output Impedance 0.5 ⍀

Output Voltage Span 10 V

Readback Capability

DSP/Microcontroller Compatible Serial Interface

Parallel Interface

Temperature Range –40؇C to +85؇C

The device is operated with AV_CC= +5 V 5%, DV_CC= +2.7 V

to +5.25 V, V_SS= –4.75 V to –16.5 V, and V_DD= +8 V to

+16.5 V and requires a stable 3 V reference on REF_IN as well

as an offset voltage on OFFS_IN.

APPLICATIONS

Optical Networks

Automatic Test Equipment

Level Setting

PRODUCT HIGHLIGHTS

1. Precision infinite droopless sample-and-hold capability.

Instrumentation

Industrial Control Systems

Data Acquisition

Low Cost I/O

2. The AD5533B is available in a 74-lead CSPBGA with a

body size of 12 mm ϫ 12 mm.

3. In infinite sample-and-hold mode, a total unadjusted error of

2.5 mV is achieved by laser-trimming on-chip resistors.

FUNCTIONAL BLOCK DIAGRAM

OFFS IN

REF IN REF OUT

OUT

DAC

ADC

TRACK/RESET

BUSY

DAC GND

AGND

OUT

AD5533B

DAC

OFFS OUT

DGND

INTERFACE

CONTROL

LOGIC

SER/PAR

ADDRESS INPUT REGISTER

SCLK

A4–A0

CAL OFFSET SEL

SYNC/CS

OUT

*Protected by U.S. Patent No. 5,969,657; other patents pending.

REV. A

Information furnished by Analog Devices is believed to be accurate and

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

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

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

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