SSM2275-SSM2275S-SSM2475S Fast Delivery |IC PHOENIX CO.,LIMITED

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SSM2275-SSM2275S-SSM2475S
Rail-to-Rail Output Audio Amplifiers
8-Lead Narrow Body SOIC 14-Lead Narrow Body SOIC
(SO-8) (R-14)
8-Lead microSOIC 14-Lead TSSOP
(RM-8) (RU-14)
8-Lead Plastic DIP
(N-8)
REV. ARail-to-Rail Output
Audio Amplifiers
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
family includes dual and quad rail-to-rail output audio amplifi-
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.
The ac performance meets the needs of the most demanding au-
dio applications, with 8 MHz bandwidth, 12 V/ms slew rate and
extremely low distortion.
The SSM2275 and SSM2475 are ideal for application in high
performance audio amplifiers, recording equipment, synthesiz-
ers, MIDI instruments and computer sound cards. Where cas-
caded stages demand low noise and predictable performance,
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. The SSM2275 is
available in 8-lead plastic DIPs, SOICs, and microSOIC surface-
mount packages. The SSM2475 is available in narrow body
SOICs and thin shrink small outline (TSSOP) surface-mount
packages.
*. Patent No. 5,101,126.
FEATURES
Single or Dual-Supply Operation
Excellent Sonic Characteristics
Low Noise: 7 nV/√Hz
Low THD: 0.0006%
Rail-to-Rail Output
High Output Current: 650 mA
Low Supply Current: 1.7 mA/Amplifier
Wide Bandwidth: 8 MHz
High Slew Rate: 12 V/ms
No Phase Reversal
Unity Gain Stable
Stable Parameters Over Temperature
APPLICATIONS
Multimedia Audio
Professional Audio Systems
High Performance Consumer Audio
Microphone Preamplifier
MIDI Instruments
PIN CONFIGURATIONS
OUT A
–IN A
+IN A
–IN D
+IN D
OUT D
+IN B
–IN B
OUT B
–IN C
OUT C
+IN COUT A
–IN A
+IN A
–IN D
+IN D
OUT D
+IN B
–IN B
OUT B
–IN C
OUT C
+IN C
OUT A
–IN A
+IN A+IN B
–IN B
OUT B
SSM2275/SSM2475–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Specifications subject to change without notice.
(VS = 615 V, TA = 1258C, VCM = 0 V unless otherwise noted)
ELECTRICAL CHARACTERISTICS
Specifications subject to change without notice.
SSM2275/SSM2475
(VS = 15 V, TA = 1258C, VCM = 2.5 V unless otherwise noted)
SSM2275/SSM2475
ABSOLUTE MAXIMUM RATINGS1
Supply Voltage (VS). . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 V
Input Voltage (VIN). . . . . . . . . . . . . . . . . . . . . . . . . . . . –15 V
Differential Input Voltage2. . . . . . . . . . . . . . . . . . . . . . . –15 V
Storage Temperature Range. . . . . . . . . . . . 265°C to 1150°C
Operating Temperature Range. . . . . . . . . . . 240°C to 185°C
Junction Temperature Range. . . . . . . . . . . . 265°C to 1150°C
Lead Temperature Range (Soldering, 60 sec). . . . . . . 1300°C
ESD Susceptibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,000 V
NOTESStresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; the functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.For supplies less than –15 V, the input voltage and differential input voltage
must be less than –15 V.
*qJA is specified for the worst case conditions, i.e., for device in socket for DIP
packages and soldered onto a circuit board for surface mount packages.
ORDERING GUIDE
SSM2275S
SSM2275RM
SSM2475S
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the SSM2275/SSM2475 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.
FREQUENCY – Hz
–40101M100
GAIN – dB10k100k
10M40M
PHASE – Degrees
–45
Figure 1.Phase/Gain vs. Frequency
FREQUENCY – Hz
–40101M100
GAIN – dB10k100k
10M40M
PHASE – Degrees
–45
Figure 2.Phase/Gain vs. Frequency
Figure 3.Phase/Gain vs. Frequency
Figure 4.Phase/Gain vs. Frequency
FREQUENCY – Hz
0.21010k100
CURRENT NOISE DENSITY – pA/
0.4
Figure 5.SSM2275 Current Noise Density vs. Frequency
FREQUENCY – Hz10100k100
VOLTAGE NOISE DENSITY – nV/10k
Figure 6.SSM2275 Voltage Noise Density (Typical)
FREQUENCY – Hz
12010030M1k
COMMON MODE REJECTION – dB
10k1M10M
100
Figure 7.Common-Mode Rejection vs. Frequency
FREQUENCY – Hz
12010010M1k
POWER SUPPLY REJECTION – dB
10k1M
100
Figure 8.Power Supply Rejection vs. Frequency
SSM2275/SSM2475

FREQUENCY – kHz
AMPLITUDE – dBV68101214161820
–150
Figure 9.THD vs. Frequency (FFT)
Figure 10.Small Signal Response; RL = 600 W, CL = 0 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 11.Small Signal Response; RL = 600 W, CL = 100 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
SSM2275/SSM2475–Typical Characteristics

LOAD CURRENT – mA
, V
OL
(VOLTS-TO-RAIL) – V15
0.1
Figure 12.Headroom (VOH and VOL-to-Rails), TA = +25°C
Figure 13.Small Signal Response; RL = 600 W, CL = 200 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 14.Small Signal Response; RL = 600 W, CL = 300 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 15.Small Signal Response; RL = 2 kW, CL = 0 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 16.Small Signal Response; RL = 2 kW, CL = 100 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 17.Small Signal Response; RL = 2 kW, CL = 200 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 18.Small Signal Response; RL = 2 kW, CL = 300 pF,
VS = –2.5 V, AV = +1, VIN = 100 mV p-p
Figure 19.Small Signal Response; RL = 600 W, CL = 0 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 20.Small Signal Response; RL = 600 W, CL = 100 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
SSM2275/SSM2475–Typical Characteristics
Figure 21.Small Signal Response; RL = 600 W, CL = 200 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 22.Small Signal Response; RL = 600 W, CL = 300 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 23.Small Signal Response; RL = 2 kW, CL = 0 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 24.Small Signal Response; RL = 2 kW, CL = 100 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 25.Small Signal Response; RL = 2 kW, CL = 200 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p
Figure 26.Small Signal Response; RL = 2 kW, CL = 300 pF,
VS = –15 V, AV = +1, VIN = 100 mV p-p

Partno	Mfg	Dc	Qty	Available	Descript
SSM2275S	AD	N/a	32	avai	Rail-to-Rail Output Audio Amplifiers
SSM2275	AD	N/a	53	avai	Rail-to-Rail Output Audio Amplifiers
SSM2475S	AD	N/a	40	avai	Rail-to-Rail Output Audio Amplifiers