TK10415 CERAMIC SPEAKER DRIVE AMPLIFIER FEATURES APPLICATIONS ■ ■ ■ ■ ■ ■ Speaker Driver for Portable Equipment ■ Headphone Driver ■ Toys and Games Wide Operating Voltage Range (VCC = 1.8 to 5.5 V) Very Low Supply Current (ICC = 1.8 mA @ VCC= 2.4 V) Very Low Standby Current (ISTBY = 0.1 µA) Miniature Package (SOT23L-6) Very Large Output Voltage (VOUT(MAX) = 1.7 Vrms @ VCC = 2.4 V, RL = 620 Ω) ■ Very Small Total Harmonic Distortion (THD = 0.1 % @ VOUT = 0.8 Vrms) ■ Needs No Output Coupling Capacitor DESCRIPTION TK10415 The TK10415M is a very low operating voltage and current audio power amplifier to drive ceramic speakers. The TK10415M drives the speaker directly, because the device has a differential output that does not need an output coupling capacitor. VOUT 1 VIN VCC GND VOUT 2 Vref/Standby The voltage gain is adjustable by two external resistors. The TK10415M is available in the very small SOT23L-6 surface mount package. The small package in conjunction with few external components saves printed circuit board space. BLOCK DIAGRAM A1 + ORDERING INFORMATION VCC TK10415M 20 kΩ VCC Tape/Reel Code 20 kΩ 36 kΩ 36 kΩ A2 + TAPE/REEL CODE TL: Tape Left December 1999 TOKO, Inc. Page 1 TK10415 ABSOLUTE MAXIMUM RATINGS Supply Voltage ........................................................... 6 V Operating Voltage ......................................... 1.8 to 5.5 V Power Dissipation (Notes 1 and 2) ..................... 400 mW Storage Temperature Range ................... -55 to +150 °C Operating Temperature Range ...................-20 to +70 °C TK10415 ELECTRICAL CHARACTERISTICS Test Conditions: VCC = 2.4 V, f = 1.0 kHz, RL = 620 Ω, TA = 25 °C, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS VCC = 2.4 V, RL = ∞ 1.8 3.0 mA VCC = 5.0 V, RL = ∞ 2.2 3.5 mA ICC Supply Current ISTBY Standby Supply Current VCC = 2.4 V = Pin 4, RL = ∞ 0.0 2.0 µA ICONT Control Terminal Current Pin 4 Sink Current, VPin4 = VCC 53.0 90.0 µA VTHS Standby Threshold Voltage Pin 4 GVO Open Circuit Voltage Gain AMP1 GV THD VOUT(MAX) Voltage Gain Total Harmonic Distortion Maximum Output Voltage VCC -0.4 V 60.0 dB AMP1 17.0 20.0 23.0 dB AMP2 -3.0 0.0 3.0 dB AMP1 + AMP2 23.0 26.0 29.0 dB VCC = 2.4 V, VOUT = 0.8 Vrms 0.1 1.0 % VCC = 5.0 V, VOUT = 2.0 Vrms 0.1 1.0 % VCC = 2.4 V, THD ≤ 10% 1.2 1.7 Vrms VCC = 5.0 V, THD ≤ 10% 2.6 3.7 Vrms 38.0 dB RR Ripple Rejection Ratio Cref = 33 µF DC Voltage at Output Terminal VOUT1 1.00 1.20 1.40 V VOUT(DC) VOUT2 1.00 1.20 1.40 V VOUT(OS) Output Offset Voltage VOUT2 - VOUT1 -30.0 0.0 30.0 mV RL Load Resistance 100 620 Ω Note 1: Power dissipation is 400 mW in free air. Derate at 3.2 mW/°C for operation above 25 °C. Note 2: Power dissipation is 600 mW when mounted. Derate at 4.8 mW/°C for operation above 25 °C. Page 2 December 1999 TOKO, Inc. TK10415 TEST CIRCUIT 100 kΩ VCC + 33 µF 10 kΩ + 1 µF VIN 0.022 µF RL VCC + Cref = 33 µF 0.022 µF TYPICAL PERFORMANCE CHARACTERISTICS VCC = 5 V, TA = 25 °C, unless otherwise specified. OUTPUT VOLTAGE AND DISTORTION vs. FREQUENCY SUPPLY CURRENT and REFERENCE VOLTAGE vs. SUPPLY VOLTAGE 10 3 V ICC (mA) / Vref (V) 2.5 VOUT (Vrms) / THD (%) IN I CC 2 1.5 V ref 1 0.5 1 2 3 4 5 6 OUT THD 0.1 0.1 1 10 100 VCC (V) fIN (kHz) OUTPUT VOLTAGE AND DISTORTION vs. INPUT VOLTAGE 1 OUTPUT VOLTAGE AND DISTORTION vs. INPUT VOLTAGE 2 10 10 VCC = 2.4 V 1 VOUT VCC = 5 V THD 0.1 VCC = 5.0 V 0.01 VOUT (Vrms) / THD (%) fIN = 1 kHz, RL = 2 kΩ VOUT (Vrms) / THD (%) V 1 0.01 0.01 0 = 40 mVrms, R = 620 Ω L fIN = 1 kHz, RL = 620 Ω VCC = 2.4 V 1 VOUT VCC = 5 V THD 0.1 VCC = 5.0 V 0.01 1 10 100 VIN (mVrms) December 1999 TOKO, Inc. 1000 1 10 100 1000 VIN (mVrms) Page 3 TK10415 TYPICAL PERFORMANCE CHARACTERISTICS (CONT.) VCC = 5 V, TA = 25 °C, unless otherwise specified. MAXIMUM OUTPUT VOLTAGE vs. SUPPLY VOLTAGE OUTPUT VOLTAGE AND DISTORTION vs. INPUT VOLTAGE 3 5 fIN = 1 kHz, RL = 100 Ω RL = 620 Ω VCC = 2.4 V 4 VOUT (Vrms) VOUT (Vrms) / THD (%) 10 1 THD 0.1 VOUT VCC = 5 V 0 1 10 100 1 1000 2 3 4 5 6 7 VIN (mVrms) VCC (V) MAXIMUM OUTPUT VOLTAGE vs. LOAD RESISTANCE 1 MAXIMUM OUTPUT VOLTAGE vs. LOAD RESISTANCE 2 5 2.5 VCC = 2.4 V fIN = 1 kHz VCC = 5.0 V fIN = 1 kHz THD = 10% 2 THD = 10% 4 VOUT (Vrms) VOUT (Vrms) THD = 1% 2 1 VCC = 5.0 V 0.01 1.5 THD = 1% 1 THD = 1% 3 2 0.5 1 0 1 2 3 4 5 6 1 7 2 3 4 5 6 RL (kΩ) RL (kΩ) CONTROL CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. REFERENCE VOLTAGE 160 2 140 1.8 7 1.6 120 1.4 100 ICC (mA) ICONT (µA) THD = 10% 3 80 60 1.2 1 0.8 0.6 40 0.4 20 0.2 0 1 2.5 3 3.5 4 VCC (V) Page 4 4.5 5 5.5 0 1 1.2 1.4 1.6 1.8 2 2.2 2.4 Vref /Standby (V) December 1999 TOKO, Inc. TK10415 PIN FUNCTION DESCRIPTIONS PIN NO. SYMBOL TERMINAL VOLTAGE (V) 1 VOUT1 1/2 VCC INTERNAL EQUIVALENT CIRCUIT DESCRIPTION A1 amplifier output terminal VCC 20 k 2 VCC VCC 3 VOUT2 1/2 VCC ___ Supply input terminal A2 amplifier output terminal VCC 20 k 4 Vref 1/2 VCC Reference voltage terminal. When this terminal is VCC, the device is in the standby mode and the supply current is down to under 0.1 µA. VCC 36 k 36 k 5 GND 0V 6 VIN 1/2 VCC Ground terminal. A1 amplifier input terminal. VCC Vref December 1999 TOKO, Inc. Page 5 TK10415 NOTES Page 6 December 1999 TOKO, Inc. TK10415 NOTES December 1999 TOKO, Inc. Page 7 TK10415 PACKAGE OUTLINE Marking Information SOT-23L-6(a) (SOT-23L) TK10415 0.4 6 Marking 415 +0.15 - 0.05 0.1 M 0.6 4 5 e1 3.0 1.0 Marking Product Code Voltage Code 1 2 3 0.32 5 PL e e +0.15 - 0.05 0.1 e 0.95 M 0.95 0.95 3.5 e 0.95 Recommended Mount Pad +0.3 - 0.1 (3.4) 15 ° max 1.2 0.4 0.15 Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) +0.15 - 0.05 0 - 0.1 1.4 max 0.3 2.2 + 0.3 3.3 Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 8 © 1999 Toko, Inc. All Rights Reserved December 1999 TOKO, Inc. IC-231-TK11031 0798O0.0K Printed in the USA