AD790S Analog Devices, AD790S Datasheet

AD790S

Manufacturer Part Number

AD790S

Description

Manufacturer

Analog Devices

Datasheet

1.AD790S.pdf (12 pages)

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PRODUCT DESCRIPTION

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.

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.

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.

PRODUCT HIGHLIGHTS

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

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

3. The hysteresis combined with a wide input voltage range

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

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

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

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

tor in analog signal processing and data acquisition systems.

chance of unwanted oscillations, making the AD790 easier to

use than standard open-loop comparators.

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

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

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

± 5 V, or +5 V/± 15 V supplies.

tor in its speed range.

and ground, thus providing a predictable output under a

wide range of input and output conditions.

OUTPUT

LOGIC

–V

+IN

–IN

+IN

CONNECTION DIAGRAMS

8-Pin Plastic Mini-DIP (N)

and Cerdip (Q) Packages

8-Pin SOIC (R) Package

–

AD790

Fast, Precision

AD790

–

Comparator

OUTPUT

GROUND

LATCH

LOGIC

AD790

GROUND

LATCH

–IN

–V

LOGIC

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AD790S Summary of contents

Page 1

... 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. Fast, Precision ...

Page 2

... MAX 0.8 MAX to T 1 MAX = 4.5 33 4.5 MAX to T 4.0 7 4.0 MAX 3.3 242 70/– 70/–40 to +85 MAX AD790K/B AD790S Typ Max Min Typ Max 45/50 60 4.65 4.65 4.45 4.3 4.45 4.3 0.35 0.35 0.44 0.5 0.44 0.5 0.5 0.5 0.05 0.25 0.2 1.0 0.5 1.5 0.4 0.5 0.3 0.4 0.65 1.8 3.5 2.5 5 4.5 7 0.02 0.15 0.04 0.25 0.2 ...

Page 3

... 76/ MAX – 0.8 MAX to T 1.6 1.6 MAX 2 MAX to T 4.5 7 4.5 MAX 70/– 70/–40 to +85 MAX AD790 1 AD790K/B AD790S Typ Max Min Typ Max 50/60 65 4.65 4.65 4.45 4.3 4.45 4.3 0.35 0.35 0.44 0.5 0.44 0.5 0.5 0.5 0.35 0.6 0.45 1.5 0.85 2.0 0.5 0.7 0.65 0.3 1.0 2.0 3.5 2 0.02 0.15 0.04 ...

Page 4

... HP8112 Model AD790JN AD790JR AD790JR-REEL AD790JR-REEL7 0°C to 70°C AD790KN AD790AQ AD790BQ AD790SQ Not for new designs; obsolete April 2002. For military processed devices, please refer to the standard Mi- crocircuit Drawing (SMD) available at = 90°C/watt; ceramic Q 160°C www.dscc.dla.mil/programs/milspec/default.asp JA SMD Part Number 5962-9150501MPA Not for new designs ...

Page 5

TEMP = +25°C 4.7 4.6 4.5 4.4 4.3 4 – mA SOURCE Typical Performace Characteristics–AD790 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 INPUT V IH LATCH OUTPUT TEMP ...

Page 6

AD790 CIRCUIT DESCRIPTION The AD790 possesses the overall characteristics of a standard monolithic comparator: differential inputs, high gain and a logic output. However, its function is implemented with an architec- ture which offers several advantages over previous comparator designs. Specifically, ...

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AD790S Analog Devices, AD790S Datasheet

AD790S

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AD790S Summary of contents

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