ssm2211z-eval Analog Devices, Inc., ssm2211z-eval Datasheet

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ssm2211z-eval

Manufacturer Part Number
ssm2211z-eval
Description
Low Distortion 1.5 Watt Audio Power Amplifier
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
1.5 W output
Differential (BTL
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 degrees
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
The SSM2211
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).
It operates over a wide temperature range and is specified for
single-supply voltages between 2.7 V and 5.5 V. When oper-
ating 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.
The low differential dc output voltage results in negligible
losses in the speaker winding and makes high value dc blocking
capacitors unnecessary. Battery life is extended by using
Rev. D
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.
1
3
is a high performance audio amplifier that
2
) output
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
1
2
3
At R
Bridge-tied load.
Protected by U.S. Patent No. 5,519,576.
SHUTDOWN
L
= 4 Ω, T
Low Distortion, 1.5 W Audio
BYPASS
IN–
IN+
A
FUNCTIONAL BLOCK DIAGRAM
= 25°C, THD + N < 1%, V
BIAS
©2006 Analog Devices, Inc. All rights reserved.
Figure 1.
V– (GND)
Power Amplifier
S
= 5 V, 4-layer PCB.
SSM2211
SSM2211
www.analog.com
V
V
OUT
OUT
A
B

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ssm2211z-eval Summary of contents

Page 1

... T = 25°C, THD + N < 1 4-layer PCB Bridge-tied load. 3 Protected by U.S. Patent No. 5,519,576. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. SSM2211 V A OUT V B OUT SSM2211 www.analog.com ...

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 Pin Configurations and ...

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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 ...

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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 ...

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ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings apply at 25°C, unless 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 Range, Soldering (60 sec) Stresses ...

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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 Description 1 SHUTDOWN Shutdown Enable. ...

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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 ...

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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 ...

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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 ...

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

Page 14

... This eliminates the need for a coupling capacitor at the output THERMAL PERFORMANCE—LFCSP 50kΩ The addition of the LFCSP to the Analog Devices, Inc., package portfolio offers the SSM2211 user even greater choice when considering thermal performance criteria. For the 8-lead × ...

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 bridged-output config- uration 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 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. D1 half-wave rectifies ...

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, as each output is 180 degrees out of phase with the other. By connecting the minus terminal of Speaker 1 to Pin 5, and the plus terminal of Speaker 2 to Pin ...

Page 21

OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY PIN 1 INDICATOR 0.90 MAX 0.85 NOM SEATING PLANE 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 SSM2211CPZ-REEL 1 ...

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SSM2211 NOTES Rev Page ...

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NOTES Rev Page SSM2211 ...

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... SSM2211 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C00358-0-11/06(D) Rev Page ...

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