REV. A

SSM2165

–3–

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the SSM2165 features proprietary ESD protection circuitry, permanent damage may

occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

PIN FUNCTION DESCRIPTIONS

Pin #

Mnemonic

Function

1

GND

Ground

2

VCA Input Pin. A typical

connection is a 1

µF–10 µF

capacitor from the buffer output

pin (Pin 3) to this pin.

3

Input Buffer Amplifier Output

Pin. Must not be loaded by

capacitance to ground.

4

AUDIO +IN

Input Audio Signal. The input

signal should be ac-coupled

(0.1

µF typical) into this pin.

5

AVG CAP

Detector Averaging Capacitor.

A capacitor, 2.2

µF–22 µF, to

ground from this pin is the

averaging capacitor for the

detector circuit.

6

COMP RATIO SET Compression Ratio Set Pin. A

resistor to ground from this pin

sets the compression ratio as

shown in Figure 1.

7

OUTPUT

Output Signal.

8

V+

Positive Supply, +5 V Nominal.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +10 V

Audio Input Voltage . . . . . . . . . . . . . . . . . . . . . Supply Voltage

Operating Temperature Range . . . . . . . . . . . . –40

°C to +85°C

Storage Temperature Range . . . . . . . . . . . . . –65

°C to +150°C

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

°C

ESD RATINGS

883 (Human Body) Model . . . . . . . . . . . . . . . . . . . . . . . 2.0 kV

THERMAL CHARACTERISTICS

Thermal Resistance

8-Lead Plastic DIP

θ

JA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

°C/W

θ

JC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

°C/W

8-Lead SOIC

θ

JA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

°C/W

θ

JC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

°C/W

ORDERING GUIDE

Temperature

Package

Package

Model

Range

Description

Options

SSM2165-1P

–40

°C to +85°C

Plastic DIP

N-8

SSM2165-2P

–40

°C to +85°C

Plastic DIP

N-8

SSM2165-1S

–40

°C to +85°C

Narrow SOIC

SO-8

SSM2165-2S

–40

°C to +85°C

Narrow SOIC

SO-8

PIN CONFIGURATION

1

2

3

4

8

7

6

5

GND

AVG CAP

COMP RATIO SET

OUTPUT

V+

AUDIO +IN

TOP VIEW

(Not to Scale)

SSM2165

WARNING!

ESD SENSITIVE DEVICE