a FEATURES 1.5 W Output1 Differential (BTL2) 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 Degrees Low Distortion: 0.2% THD @ 1 W Output Excellent Power Supply Rejection APPLICATIONS Portable Computers Personal Wireless Communicators Hands-Free Telephones Speakerphones Intercoms Musical Toys and Speaking Games GENERAL DESCRIPTION The SSM2211 is a high-performance audio amplifier that delivers 1 W RMS of low distortion audio power into a bridge-connected 8 speaker load, (or 1.5 W RMS into 4 load). It 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 will continue 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 @ 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 the Shutdown mode, which reduces quiescent current drain to typically 100 nA. Low Distortion 1.5 Watt Audio Power Amplifier SSM2211* FUNCTIONAL BLOCK DIAGRAM IN - VOUT A IN + VOUT B BYPASS SHUTDOWN BIAS V- (GND) The SSM2211 is designed to operate over the -20C to +85C temperature range. The SSM2211 is available in SO-8 and LFCSP (Lead Frame Chip Scale Package) surface mount packages. The SO-8 features the patented Thermal Coastline lead frame (see Figure 12). The advanced mechanical packaging of the SSM2211 ensures lower chip temperature and enhanced performance relative to standard packaging options. DIP samples are available; you should request a special quotation on production quantities. An evaluation board is available upon request of your local Analog Device sales office. 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. *Protected by U.S. Patent No. 5,519,576 NOTES 1 1.5 W @ 4 , 25C ambient, <1% THD, 5 V supply, 4 layer PCB. 2 Bridge Tied Load REV. A 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. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 (c) Analog Devices, Inc., 2002 SSM2211-SPECIFICATIONS ELECTRICAL CHARACTERISTICS (V = 5.0 V, T = 25C, R = 8 , C S A L B = 0.1 F, VCM = VD/2, unless otherwise noted.) Parameter Symbol Conditions GENERAL CHARACTERISTICS Differential Output Offset Voltage Output Impedance VOOS ZOUT AVD = 2 SHUTDOWN CONTROL Input Voltage High Input Voltage Low VIH VIL ISY = < 100 A ISY = Normal POWER SUPPLY Power Supply Rejection Ratio Supply Current Supply Current, Shutdown Mode PSRR ISY ISD VS = 4.75 V to 5.25 V VO1 = VO2 = 2.5 V Pin 1 = VDD, See TPC 29 DYNAMIC PERFORMANCE Gain Bandwidth Phase Margin GBP O0 AUDIO PERFORMANCE Total Harmonic Distortion Total Harmonic Distortion Voltage Noise Density THD + N THD + N en A L Typ Max Unit 4 0.1 50 mV 3.0 1.3 P = 0.5 W into 8 , f = 1 kHz P = 1.0 W into 8 , f = 1 kHz f = 1 kHz ELECTRICAL CHARACTERISTICS (V = 3.3 V, T = 25C, R = 8 , C S Min B V V 66 9.5 100 dB mA nA 4 86 MHz Degrees 0.15 0.2 85 % % nVHz = 0.1F, VCM = VD/2, unless otherwise noted.) Parameter Symbol Conditions Min Typ Max Unit GENERAL CHARACTERISTICS Differential Output Offset Voltage Output Impedance VOOS ZOUT AVD = 2 5 0.1 50 mV SHUTDOWN INPUT Input Voltage High Input Voltage Low VIH VIL ISY = < 100 A POWER SUPPLY Supply Current Supply Current, Shutdown Mode ISY ISD VO1 = VO2 = 1.65 V Pin 1 = VDD, See TPC 29 5.2 100 mA nA AUDIO PERFORMANCE Total Harmonic Distortion THD + N P = 0.35 W into 8 , f = 1 kHz 0.1 % 1.7 1 ELECTRICAL CHARACTERISTICS (V = 2.7 V, T = 25C, R = 8 , C S A L B V V = 0.1 F, VCM = VS/2, unless otherwise noted.) Parameter Symbol Conditions Min Typ Max Unit GENERAL CHARACTERISTICS Differential Output Offset Voltage Output Impedance VOOS ZOUT AVD = 2 5 0.1 50 mV SHUTDOWN CONTROL Input Voltage High Input Voltage Low VIH VIL ISY = < 100 A ISY = Normal POWER SUPPLY Supply Current Supply Current, Shutdown Mode ISY ISD VO1 = VO2 = 1.35 V Pin 1 = VDD, See TPC 29 4.2 100 mA nA AUDIO PERFORMANCE Total Harmonic Distortion THD + N P = 0.25 W into 8 , f = 1 kHz 0.1 % 1.5 0.8 V V Specifications subject to change without notice -2- REV. A SSM2211 ABSOLUTE MAXIMUM RATINGS 1, 2 PIN CONFIGURATIONS Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VDD Common Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . . VDD ESD Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V Storage Temperature Range . . . . . . . . . . . . 65C to +150C Operating Temperature Range . . . . . . . . . . . 20C to +85C Junction Temperature Range . . . . . . . . . . . . 65C to +165C Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300C 8-Lead SOIC (SO-8) 8 VOUT B SHUTDOWN 1 7 -V TOP VIEW +IN 3 (Not to Scale) 6 +V BYPASS 2 5 VOUT A -IN 4 NOTES 1 Absolute maximum ratings apply at 25C, unless otherwise noted. 2 Stresses above those listed under Absolute Maximum Ratings may cause permanent 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. 8-Lead LFCSP (CP-8) 8 VOUT B SHUTDOWN 1 7 -V TOP VIEW +IN 3 (Not to Scale) 6 +V BYPASS 2 Package Type JA1 8-Lead LFCSP (CP)2 8-Lead SOIC (S) 8-Lead PDIP (P)3 50 98 103 JC Units 43 43 C/W C/W C/W 5 VOUT A -IN 4 8-Lead Plastic DIP (N-8) NOTES 1 For the SOIC package, JA is measured with the device soldered to a 4-layer printed circuit board. 2 For the LFCSP package, JA is measured with exposed lead frame soldered to the printed circuit board. 3 Special order only. 8 VOUT B SHUTDOWN 1 7 -V TOP VIEW +IN 3 (Not to Scale) 6 +V BYPASS 2 5 VOUT A -IN 4 ORDERING GUIDE Model Temperature Range Package Description Package Options SSM2211CP-Reel SSM2211S SSM2211S-Reel SSM2211S-Reel7 SSM2211P -20C to +85C -20C to +85C -20C to +85C -20C to +85C -20C to +85C 8-Lead LFCSP 8-Lead SOIC 8-Lead SOIC 8-Lead SOIC 8-Lead PDIP CP-8 SO-8 SO-8 SO-8 N-8* Brand B5A *Special order only. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the SSM2211 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. REV. A -3- WARNING! ESD SENSITIVE DEVICE