SSM2211CP-REEL7

Manufacturer Part NumberSSM2211CP-REEL7
DescriptionIC AMP AUDIO PWR 1W MONO 8LFCSP
ManufacturerAnalog Devices Inc
TypeClass AB
SSM2211CP-REEL7 datasheet
 


Specifications of SSM2211CP-REEL7

Rohs StatusRoHS non-compliantOutput Type1-Channel (Mono)
Max Output Power X Channels @ Load1.5W x 1 @ 4 OhmVoltage - Supply2.7 V ~ 5.5 V
FeaturesDifferential Inputs, ShutdownMounting TypeSurface Mount
Package / Case8-LFCSPOther namesSSM2211CP-REEL7
SSM2211CP-REEL7TR
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FEATURES
1.5 W output with THD + N < 1%
Differential bridge-tied load output
Single-supply operation: 2.7 V to 5.5 V
Functions down to 1.75 V
Wide bandwidth: 4 MHz
Highly stable phase margin: >80°
Low distortion: 0.2% THD + N @ 1 W output
Excellent power supply rejection
APPLICATIONS
Portable computers
Personal wireless communicators
Hands-free telephones
Speaker phones
Intercoms
Musical toys and talking games
GENERAL DESCRIPTION
1
The SSM2211
is a high performance audio amplifier that
delivers 1 W rms of low distortion audio power into a bridge-
connected 8 Ω speaker load (or 1.5 W rms into a 4 Ω load).
The SSM2211 operates over a wide temperature range and is
specified for single-supply voltages between 2.7 V and 5.5 V.
When operating from batteries, it continues to operate down to
1.75 V. This makes the SSM2211 the best choice for unregulated
applications, such as toys and games.
Featuring a 4 MHz bandwidth and distortion below 0.2% THD
+ N @ 1 W, superior performance is delivered at higher power
or lower speaker load impedance than competitive units.
Furthermore, when the ambient temperature is at 25°C, THD +
N < 1%, and V
= 5 V on a four-layer PCB, the SSM2211
S
delivers a 1.5 W output.
1
Protected by U.S. Patent No. 5,519,576.
Rev. E
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Low Distortion, 1.5 W Audio
Power Amplifier
FUNCTIONAL BLOCK DIAGRAM
IN–
IN+
BYPASS
SHUTDOWN
BIAS
V– (GND)
Figure 1.
The low differential dc output voltage results in negligible
losses in the speaker winding and makes high value dc blocking
capacitors unnecessary. The battery life is extended by using
shutdown mode, which typically reduces quiescent current
drain to 100 nA.
The SSM2211 is designed to operate over the −40°C to +85°C
temperature range. The SSM2211 is available in 8-lead SOIC
(narrow body) and LFCSP (lead frame chip scale) surface-
mount packages. The advanced mechanical packaging of the
LFCSP models ensures lower chip temperature and enhanced
performance relative to standard packaging options.
Applications include personal portable computers, hands-free
telephones and transceivers, talking toys, intercom systems, and
other low voltage audio systems requiring 1 W output power.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
SSM2211
V
A
OUT
V
B
OUT
SSM2211
www.analog.com

SSM2211CP-REEL7 Summary of contents

  • Page 1

    FEATURES 1.5 W output with THD + N < 1% Differential bridge-tied load output Single-supply operation: 2 5.5 V Functions down to 1.75 V Wide bandwidth: 4 MHz Highly stable phase margin: >80° Low distortion: 0.2% THD + ...

  • Page 2

    SSM2211 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Electrical Characteristics ................................................................. 3 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 ...

  • Page 3

    ELECTRICAL CHARACTERISTICS 25° Ω 0.1 μ Table 1. Parameter GENERAL CHARACTERISTICS Differential Output Offset Voltage Output Impedance SHUTDOWN CONTROL Input Voltage High Input Voltage ...

  • Page 4

    SSM2211 25° Ω 0.1 μ Table 3. Parameter GENERAL CHARACTERISTICS Differential Output Offset Voltage Output Impedance SHUTDOWN CONTROL Input Voltage High Input Voltage Low ...

  • Page 5

    ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings apply otherwise noted. Table 4. Parameter Supply Voltage Input Voltage Common-Mode Input Voltage ESD Susceptibility Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature, Soldering (60 sec) Stresses above ...

  • Page 6

    SSM2211 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS SHUTDOWN 1 SSM2211 BYPASS 2 IN+ 3 TOP VIEW (Not to Scale) IN– 4 Figure 2. 8-Lead SOIC_N Pin Configuration (R-8) Table 6. Pin Function Descriptions Pin No. Mnemonic 1 SHUTDOWN 2 BYPASS 3 ...

  • Page 7

    TYPICAL PERFORMANCE CHARACTERISTICS 25° (BTL 8Ω 500mW 0.1μ 1μF B 0.1 0.01 ...

  • Page 8

    SSM2211 25° (BTL 8Ω L FREQUENCY = 20Hz C = 0.1μ 0.1 0.01 20n 0.1 P (W) OUTPUT Figure 10. THD + N vs. ...

  • Page 9

    T = 25° 3. (BTL 8Ω L FREQUENCY = 20Hz C = 0.1μ 0.1 0.01 20n 0.1 P (W) OUTPUT Figure 16. THD + N vs. P ...

  • Page 10

    SSM2211 25° 2. (BTL 8Ω L FREQUENCY = 20Hz 1 0.1 0.01 20n 0.1 P (W) OUTPUT Figure 22. THD + N vs ...

  • Page 11

    T = 25° 2. (BTL 8Ω L FREQUENCY = 20Hz C = 0.1μ 3.3V DD 0.1 0.01 20n 0.1 P (W) OUTPUT Figure 28. THD ...

  • Page 12

    SSM2211 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 2. LOAD RESISTANCE (Ω) Figure 34. P vs. Load Resistance OUTPUT –20 –40 –60 –80 100 1k ...

  • Page 13

    3. SAMPLE SIZE = 300 SAMPLE SIZE = 300 –30 –20 – OUTPUT OFFSET VOLTAGE (mV) Figure 38. Output Offset Voltage Distribution 600 V = ...

  • Page 14

    SSM2211 PRODUCT OVERVIEW The SSM2211 is a low distortion speaker amplifier that can run from a 2 5.5 V supply. It consists of a rail-to-rail input and a differential output that can be driven within 400 mV of ...

  • Page 15

    TYPICAL APPLICATIONS AUDIO – INPUT 5 SSM2211 Figure 42. Typical Configuration Figure 42 shows how the SSM2211 is connected in a ...

  • Page 16

    SSM2211 POWER DISSIPATION Another important advantage in using a BTL configuration is the fact that bridged-output amplifiers are more efficient than single-ended amplifiers in delivering power to a load. Efficiency is defined as the ratio of the power from the ...

  • Page 17

    0.30 0.25 0.20 0.15 0. 16Ω 0.1 0.2 OUTPUT POWER (W) Figure 45. Power Dissipation vs. Single-Ended Output Power with The maximum power dissipation ...

  • Page 18

    SSM2211 The input signal to the SSM2211 is also connected to the non- inverting terminal of A2. R1, R2, and R3 set the threshold voltage at which the SSM2211 taken out of shutdown mode. The diode, D1, ...

  • Page 19

    The extra supply voltage also allows the SSM2211 to reproduce peaks in excess without clipping the signal. With and Ω, Equation 9 shows that DD L the maximum ...

  • Page 20

    SSM2211 The polarity of the speakers is important because each output is 180° out of phase with the other. By connecting the negative terminal of Speaker 1 to Pin 5 and the positive terminal of Speaker 2 to Pin 8, ...

  • Page 21

    OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY PIN 1 INDICATOR 0.90 MAX 0.85 NOM SEATING PLANE 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° ...

  • Page 22

    ... SSM2211 ORDERING GUIDE Model Temperature Range SSM2211CP-R2 –40°C to +85°C SSM2211CP-REEL –40°C to +85°C SSM2211CP-REEL7 –40°C to +85°C 1 SSM2211CPZ-R2 –40°C to +85°C 1 SSM2211CPZ-REEL –40°C to +85°C SSM2211CPZ-REEL7 –40°C to +85°C SSM2211S –40°C to +85°C SSM2211S-REEL – ...

  • Page 23

    NOTES Rev Page SSM2211 ...

  • Page 24

    SSM2211 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00358-0-4/08(E) Rev Page ...