SSM2142P Analog Devices Inc, SSM2142P Datasheet

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SSM2142P

Manufacturer Part Number
SSM2142P
Description
IC AUDIO DRVR MONO AB DIFF 8DIP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of SSM2142P

Rohs Status
RoHS non-compliant
Amplifier Type
Audio
Number Of Circuits
1
Output Type
Differential
Slew Rate
15 V/µs
Current - Supply
5.5mA
Current - Output / Channel
70mA
Voltage - Supply, Single/dual (±)
±13 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
-3db Bandwidth
-
Gain Bandwidth Product
-
Current - Input Bias
-
Voltage - Input Offset
-

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a
GENERAL DESCRIPTION
The SSM2142 is an integrated differential-output buffer
amplifier that converts a single-ended input signal to a balanced
output signal pair with high output drive. By utilizing low noise
thermally matched thin film resistors and high slew rate
amplifiers, the SSM2142 helps maintain the sonic quality of
audio systems by eliminating power line hum, RF interference,
voltage drops, and other externally generated noise commonly
encountered with long audio cable runs. Excellent rejection of
common-mode noise and offset errors is achieved by laser
trimming of the onboard resistors, assuring high gain accuracy.
The carefully designed output stage of the SSM2142 is capable
of driving difficult loads, yielding low distortion performance
despite extremely long cables or loads as low as 600 , and is
stable over a wide range of operating conditions.
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Transformer-Like Balanced Output
Drives 10 V RMS Into a 600
Stable When Driving Large Capacitive Loads and Long
Low Distortion
High Slew Rate
Low Gain Error
Outputs Short-Circuit Protected
Available In Space-Saving 8-Pin Mini-DIP Package
Low Cost
APPLICATIONS
Audio Mix Consoles
Distribution Amplifiers
Graphic and Parametric Equalizers
Dynamic Range Processors
Digital Effects Processors
Telecommunications Systems
Industrial Instrumentation
Hi-Fi Equipment
Cables
0.006% typ 20 Hz–20 kHz, 10 V RMS into 600
15 V/ s typ
(Differential or Single-Ended); 0.7% typ
Load
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Based on a cross-coupled, electronically balanced topology, the
SSM2142 mimics the performance of fully balanced
transformer-based solutions for line driving. However, the
SSM2142 maintains lower distortion and occupies much less
board space than transformers while achieving comparable
common-mode rejection performance with reduced parts count.
The SSM2142 in tandem with the SSM2141 differential
receiver establishes a complete, reliable solution for driving and
receiving audio signals over long cables. The SSM2141 features
an Input Common-Mode Rejection Ratio of 100 dB at 60 Hz.
Specifications demonstrating the performance of this typical
system are included in the data sheet.
GND
V
IN
ALL RESISTORS 30k
UNLESS OTHERWISE
INDICATED
FUNCTIONAL BLOCK DIAGRAM
Balanced Line Driver
10k
10k
SSM2142
50
50
Fax: 617/326-8703
+OUT FORCE
+OUT SENSE
– OUT FORCE
– OUT SENSE

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SSM2142P Summary of contents

Page 1

FEATURES Transformer-Like Balanced Output Drives 10 V RMS Into a 600 Load Stable When Driving Large Capacitive Loads and Long Cables Low Distortion 0.006% typ 20 Hz–20 kHz RMS into 600 High Slew Rate ...

Page 2

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE Operating Model Temperature Range SSM2142P – +85 C SSM2142S* – +85 C *For availability of SOIC package, contact your local sales office – noted ...

Page 3

V OUT CMR V OUT OCMR = 20 LOG V CMR Figure 1. Output CMR Test Circuit Typical Performance Characteristics 140 120 100 80 60 ...

Page 4

SSM2142 THD PERFORMANCE The following data, taken from the THD test circuit on an Audio Precision System One using the internal 80 kHz noise filter, demonstrates the typical performance of a balanced pair system based on the SSM2142/SSM2141 chip set. ...

Page 5

Figure 12. 100 kHz Square Wave Observed at Point B (Differential Mode rms 100 Figure 13. 100 kHz Square Wave at Point ...

Page 6

SSM2142 THE CABLE PAIR The SSM2142 is capable of driving rms signal into 600 and will remain stable despite cable capacitances 0. either balanced or single-ended configurations. Low impedance shielded audio cable ...

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