ORDERING GUIDE

Temperature

Package

Package

Model

Range

Descriptions

Options

AD636JD

0

°C to +70°C

Side Brazed Ceramic DIP D-14

AD636KD

0

°C to +70°C

Side Brazed Ceramic DIP D-14

AD636JH

0

°C to +70°C

Header

H-10A

AD636KH

0

°C to +70°C

Header

H-10A

AD636J Chip

0

°C to +70°C

Chip

AD636JD/+

0

°C to +70°C

Side Brazed Ceramic DIP D-14

AD636

AD636J

AD636K

Min

Typ

Max

Min

Typ

Max

Units

TEMPERATURE RANGE

Rated Performance

0

+70

0

+70

°C

Storage

–55

+150

–55

+150

°C

TRANSISTOR COUNT

62

62

NOTES

µs.

Ω pull down resistor from Pin 6 (BUF OUT) to –V

Specifications subject to change without notice.

All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test and are used to calculate outgoing

quality levels.

ABSOLUTE MAXIMUM RATINGS

1

Supply Voltage

Dual Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±16.5 V

Single Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +24 V

Internal Power Dissipation

2

. . . . . . . . . . . . . . . . . . . . 500 mW

Maximum Input Voltage . . . . . . . . . . . . . . . . . . . .

±12 V Peak

Storage Temperature Range N, R . . . . . . . . . –55

°C to +150°C

Operating Temperature Range

AD636J/K . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

°C to +70°C

Lead Temperature Range (Soldering 60 sec) . . . . . . . . +300

°C

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 V

NOTES

nent damage to the device. This is a stress rating only; functional operation of the

device at these or any other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

θ

14-Lead Side Brazed Ceramic DIP:

θ

METALIZATION PHOTOGRAPH

Contact factory for latest dimensions.

Dimensions shown in inches and (mm).

COM

10

9

1a*

1b*

3

4

5

dB

7 BUF IN

6 BUF OUT

0.1315 (3.340)

0.0807

(2.050)

PAD NUMBERS CORRESPOND TO PIN NUMBERS

FOR THE TO-116 14-PIN CERAMIC DIP PACKAGE.

NOTE

STANDARD CONNECTION

The AD636 is simple to connect for the majority of high accu-

racy rms measurements, requiring only an external capacitor to

set the averaging time constant. The standard connection is

shown in Figure 1. In this configuration, the AD636 will mea-

sure the rms of the ac and dc level present at the input, but will

show an error for low frequency inputs as a function of the filter

µF capacitor

is used, the additional average error at 10 Hz will be 0.1%, at

3 Hz it will be 1%. The accuracy at higher frequencies will be

according to specification. If it is desired to reject the dc input, a

capacitor is added in series with the input, as shown in Fig-

ure 3; the capacitor must be nonpolar. If the AD636 is driven

with power supplies with a considerable amount of high frequency

ripple, it is advisable to bypass both supplies to ground with

0.1

µF ceramic discs as near the device as possible. C

optional output ripple filter, as discussed elsewhere in this data

sheet.

AD636

14

13

12

11

10

9

8

1

2

3

4

5

6

7

ABSOLUTE

VALUE

SQUARER

DIVIDER

BUF

+

–

CURRENT

MIRROR

10k

10k

(OPTIONAL)

+

–

SQUARER

DIVIDER

ABSOLUTE

VALUE

AD636

CURRENT

MIRROR

+–

BUF

10k

10k

+

–

(OPTIONAL)

Figure 1. Standard RMS Connection

REV. B

–3–