SSM2275_15 Datasheet, PDF (1/16 Pages) Analog Devices – Rail-to-Rail Output Audio Amplifiers

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Rail-to-Rail Output
Audio Amplifiers
SSM2275/SSM2475
FEATURES
PIN CONFIGURATIONS
Single or Dual-Supply Operation
Excellent Sonic Characteristics
8-Lead Narrow Body SOIC 14-Lead Narrow Body SOIC
Low Noise: 7 nV/√Hz
(SO-8)
(R-14)
Low THD: 0.0006%
Rail-to-Rail Output
OUT A 1
8 V+
OUT A 1
14 OUT D
High Output Current: ؎50 mA
–IN A 2 _SSM2275 7 OUT B
–IN A 2
13 –IN D
OBSOLETE Low Supply Current: 1.7 mA/amplifier
Wide Bandwidth: 8 MHz
High Slew Rate: 12 V/µs
No Phase Reversal
Unity Gain Stable
Stable Parameters Over Temperature
APPLICATIONS
Multimedia Audio
Professional Audio Systems
High Performance Consumer Audio
Microphone Preamplifier
MIDI Instruments
GENERAL DESCRIPTION
The SSM2275 and SSM2475 use the Butler Amplifier front
end, which combines both bipolar and FET transistors to offer
the accuracy and low noise performance of bipolar transistors
and the slew rates and sound quality of FETs. This product
+IN A 3 ^{(Not to Scale)} 6 –IN B
V– 4
5 +IN B
8-Lead microSOIC
(RM-8)
OUT A
–IN A
+IN A
V–
1
8
SSM2275
4
5
V+
OUT B
–IN B
+IN B
8-Lead Plastic DIP
+IN A
V+
+IN B
3
12
SSM2475
4 _{(Not to Scale)} 11
5
10
+IN D
V–
+IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
14-Lead TSSOP
(RU-14)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
14
SSM2475
7
8
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
14-Lead Plastic DIP
family includes dual and quad rail-to-rail output audio amplifi-
(N-8)
(N-14)
ers that achieve lower production costs than the industry stan-
dard OP275 (the first Butler Amplifier offered by Analog
Devices). This lower cost amplifier also offers operation from a
single 5 V supply, in addition to conventional ± 15 V supplies.
OUT A 1
–IN A 2
(Not to
Scale)
8 V+
7 OUT B
OUT A 1
–IN A 2
14 OUT D
13 –IN D
The ac performance meets the needs of the most demanding au-
dio applications, with 8 MHz bandwidth, 12 V/µs slew rate and
extremely low distortion.
The SSM2275 and SSM2475 are ideal for application in high
+IN A 3
V– 4
SSM2275
6 –IN B
5 +IN B
+IN A 3
V+ 4
+IN B 5
SSM2475
(Not to Scale)
12 +IN D
11 V–
10 +IN C
performance audio amplifiers, recording equipment, synthesiz-
ers, MIDI instruments and computer sound cards. Where cas-
–IN B 6
9 –IN C
caded stages demand low noise and predictable performance,
OUT B 7
8 OUT C
SSM2275 and SSM2475 are a cost effective solution. Both are
stable even when driving capacitive loads.
The ability to swing rail-to-rail at the outputs (see Applications sec-
tion) and operate from low supply voltages enables designers to at-
tain high quality audio performance, even in single supply systems.
The SSM2275 and SSM2475 are specified over the extended
industrial (–40°C to +85°C) temperature range and are available in
8-lead plastic DIPs, SOICs, and microSOIC surface mount pack-
ages. The SSM2475 is available in 14-lead plastic DIPs, narrow
body SOICs, and thin shrink small outline (TSSOP) surface
mount packages.
REV. 0
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© Analog Devices, Inc., 1997