Datasheet > AD790_02

AD790_02

更新时间： 2024-11-20 04:04:19

品牌	Logo	应用领域
亚德诺 - ADI		比较器
页数	文件大小	规格书
12页	174K
描述
Fast, Precision Comparator

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数据手册

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AD790_02 数据手册

Fast, Precision

Comparator

AD790

CONNECTION DIAGRAMS

FEATURES

8-Pin Plastic Mini-DIP (N)

and Cerdip (Q) Packages

45 ns max Propagation Delay

Single 5 V or Dual ؎15 V Supply Operation

CMOS or TTL Compatible Output

250 ␮V max Input Offset Voltage

500 ␮V max Input Hysteresis Voltage

15 V max Differential Input Voltage

Onboard Latch

60 mW Power Dissipation

Available in 8-Pin Plastic and Hermetic Cerdip

Packages

LOGIC

AD790

+IN

–IN

OUTPUT

–

GROUND

LATCH

–V

Available in Tape and Reel in Accordance with

EIA-481A Standard

8-Pin SOIC (R) Package

APPLICATIONS

Zero-Crossing Detectors

Overvoltage Detectors

Pulse-Width Modulators

Precision Rectifiers

Discrete A/D Converters

Delta-Sigma Modulator A/Ds

GROUND

LATCH

OUTPUT

AD790

–

LOGIC

–V

–IN

+IN

PRODUCT DESCRIPTION

PRODUCT HIGHLIGHTS

The AD790 is a fast (45 ns), precise voltage comparator, with a

number of features that make it exceptionally versatile and easy

to use. The AD790 may operate from either a single 5 V supply

or a dual 15 V supply. In the single-supply mode, the AD790’s

inputs may be referred to ground, a feature not found in other

comparators. In the dual-supply mode it has the unique ability

of handling a maximum differential voltage of 15 V across its in-

put terminals, easing their interfacing to large amplitude and

dynamic signals.

1. The AD790’s combination of speed, precision, versatility

and low cost makes it suitable as a general purpose compara-

tor in analog signal processing and data acquisition systems.

2. Built-in hysteresis and a low-glitch output stage minimize the

chance of unwanted oscillations, making the AD790 easier to

use than standard open-loop comparators.

3. The hysteresis combined with a wide input voltage range

enables the AD790 to respond to both slow, low level (e.g.,

10 mV) signals and fast, large amplitude (e.g., 10 V) signals.

This device is fabricated using Analog Devices’ Complementary

Bipolar (CB) process—which gives the AD790’s combination

of fast response time and outstanding input voltage resolution

(1 mV max). To preserve its speed and accuracy, the AD790

incorporates a “low glitch” output stage that does not exhibit

the large current spikes normally found in TTL or CMOS output

stages. Its controlled switching reduces power supply disturbances

that can feed back to the input and cause undesired oscillations.

The AD790 also has a latching function which makes it suitable

for applications requiring synchronous operation.

4. A wide variety of supply voltages is acceptable for operation

of the AD790, ranging from single 5 V to dual +5 V/–12 V,

5 V, or +5 V/ 15 V supplies.

5. The AD790’s power dissipation is the lowest of any compara-

tor in its speed range.

6. The AD790’s output swing is symmetric between V_LOGIC

and ground, thus providing a predictable output under a

wide range of input and output conditions.

The AD790 is available in five performance grades. The

AD790J and the AD790K are rated over the commercial tem-

perature range of 0°C to 70°C. The AD790A and AD790B are

rated over the industrial temperature range of –40°C to +85°C.

The AD790S is rated over the military temperature range of

–55°C to +125°C.

REV. D

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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