www.taimec.com.tw / TMPA208DS Preliminary Tai-1 Microelectronics www.class-d.com.tw Rev.1.0 June 27, 2006 2.5W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH VOLUME CONTROL GENERAL DESCRIPTION FEATURES The TMPA208DS is a stereo class-D audio power ♦2.5V to 6V Single Supply amplifier with volume control. It delivers up to ♦Up to 5Wrms Max. Power or 2.5Wrms/ch. 2.5W/ch(5W in all) into a 3 ohm load or 2W/ch(4W in all) into a 4 ohm load or 1.25W/ch(2.5W in all) ♦Up to 86% Power Efficiency into an 8 ohm load. ♦3mA /Ch Quiescent Current With differential input structure, TMPA208DS ♦Less Than 0.2uA /Ch Shutdown Current features high Common Mode Rejection Ratio and ♦Pop-less Power-Up, Shutdown and Recovery Power Supply Rejection Ratio. ♦Differential 230 KHz PWM Allows Bridge-Tied Load to Analog input signal is converted into digital output which drives directly to the speaker. High power efficiency is achieved due to digital output Increase Output Power ♦DC Volume Control at the load. The audio information is embedded in ♦BTL Output Requires No Output Capacitors PWM（Pulse Width Modulation）. ♦Thermal Shutoff and Automatic Recovery DC volume control is convenient for LCD projectors, LCD monitors, powered speakers, and other consumer products especially when using remote control. ♦Output Pin Short-Circuit Protection (Short to Other Outputs, Short to VCC, Short to Ground) ♦Compatible with earphone application ♦Differential APPLICATIONS Multimedia application includes Cellular Phones, Signal Processing Improves CMRR & Eliminates Power Regulation ♦Package：TSSOP20 Available PDAs, DVD/CD players, TFT LCD TVs/Monitors, LCD Projectors, 2.1 channel audio systems, Powered Speakers, USB audio. It is also ideal for other portable devices like Wireless Radios. For best performance, please refer to http://www.taimec.com.tw/English/EVM.htm http://www.class-d.com.tw/English/EVM.htm for PCB layout. Tai-1 Microelectronics Corp. reserves the right to make changes to its products and services and to discontinue any product or service without notice. Customers should obtain the latest relevant information for reference. Testing and quality control techniques are used to screen the parameters. Testing of all parameters of each product is not necessarily performed. Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 1 Tai-1 Microelectronics www.taimec.com.tw / Preliminary www.class-d.com.tw TMPA208DS Rev.1.0 June 27, 2006 REFERENCE CIRCUIT（Please refer to TMPA002.APP for application） TOP VIEW （Please email [email protected] for complete datasheet.） Tai-1 Microelectronics reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers are responsible for their products and applications using Tai-1 Microelectronics components. Note that the external components or PCB layout should be designed not to generate abnormal voltages to the chip to prevent from latch up which may cause damage to the device. Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 2 www.taimec.com.tw / TMPA208DS Preliminary Tai-1 Microelectronics www.class-d.com.tw Rev.1.0 June 27, 2006 Typical Application J1 PHONEJACK STEREO R10 0k LIN+ RIN+ R4 R5 100 C7 R7 5k R6 C11 1uF SDN R1 10k 33u C1 1uF VDD LOUT- L2 + L1 LOUT+ C15 1nF C8 1uF 5k switch S1 1uF C6 470uF 33u J2 1 LINN RINN 20 2 LINP RINP 19 3 SDNB BYPASS 18 PVDDL PVDDR 4 17 5 LOUTP ROUTP 16 6 PGNDLPGNDR 15 LOUTN ROUTN 7 14 8 PVDDLPVDDR 13 9 NC VOLUME 12 AGND AVDD 10 11 C9 1uF R8 5k C10 1uF C16 1nF R9 5k 100 C12 1uF C4 1uF L3 C3 1uF R2 50k 33k ROUT+ ROUT- 33u C13 1uF R3 VDD 100 + C2 C5 470uF 1uF C14 1uF VDD L4 VOLUME R12 AVDD TMPA208DS 33u TERMINAL FUNCTIONS TERMINAL I/O NAME DESCRIPTION PIN NO AGND 10 － Analog ground BYPASS 18 O Bypass LINN 1 I Negative differential input for left channel LINP 2 I Positive differential input for left channel LOUTN 7 O Negative output for left channel LOUTP 5 O Positive output for left channel NC 9 No connection PGNDL 6 － － PGNDR 15 － Ground for right channel H-bridge PVDDL 4,8 － Power supply for left channel H-bridge PVDDR 13,17 － Power supply for right channel H-bridge RINN 20 I Negative differential input for right channel RINP 19 I Positive differential input for right channel ROUTN 14 O Negative output for right channel ROUTP 16 O Positive output for right channel SDNB 3 I AVDD 11 － VOLUME 12 I Ground for left channel H-bridge Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal; normal operation if a TTL logic high is placed on this terminal Analog power supply DC Volume control Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 3 www.taimec.com.tw / TMPA208DS Preliminary Tai-1 Microelectronics www.class-d.com.tw Rev.1.0 June 27, 2006 ABSOLUTE MAXIMUM RATINGS Over operating free-air temperature range unless otherwise noted (1) Supply voltage range, VDD, PVDD 0.3V to 6V Input voltage range, V I 0V to 5.5V Continuous total power dissipation See Dissipation Rating Table Operating free-air temperature, TA -20。C to 85。C Operating junction temperature range, TJ -20。C to 150。C Storage temperature range, Tstg -65。C to 150。C (1)Stresses beyond those listed under“absolute maximum ratings”may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under“recommended operating conditions”is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. DISSIPATION RATINGS TABLE TA≤25。C PACKAGE TSSOP20(FD) 2.18W DERATING FACTOR 。 21.8mW/ C TA=70。C TA=85。C 1.2W 872mW RECOMMENDED OPERATING CONDITIONS MIN Supply voltage, VDD TYP 2.5 High-level input voltage, V IH SDNB Low-level input voltage, V IL SDNB MAX UNIT 6 V 2 V 0.8 V PWM frequency 200 300 KHz Operating free-air temperature, TA -20 85 -20 Operating junction temperature, TJ 125 。 C 。 C ELECTRICAL CHARACTERISTICS T A=25。C, VDD=PVDD=5V (unless otherwise noted) PARAMETER ｜VOS｜ PSSR TYP MAX UNIT Output offset voltage（measured differentially） VI=0V, AV=20dB, RL=8Ω 25 50 mV Power supply rejection ratio -70 dB 30 μA │IIH│ High-level input current │IIL│ Low-level input current TEST CONDITIONS MIN VDD=PVDD=3.5V to 5.5V VDD=AVDD=5.5V, VI=5.8V (SDNB) VDD=AVDD=5.5V, VI=-0.3V (SDNB) 1 μA IDD Supply current No load 6 10 mA IDD（SD） Supply current in shutdown mode SDNB=0V 50 1000 nA VDD=5V, IO=500mA, High side 450 600 Low side 450 600 rds（on） Drain-source on-state resistance TJ=25。C Av Voltage gain RL=8Ω, VOLUME=2.8V Ri Input resistance VOLUME=2.8V~0V Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 18 24 mΩ dB 200 kΩ 4 Tai-1 Microelectronics www.taimec.com.tw / TMPA208DS Preliminary www.class-d.com.tw Rev.1.0 June 27, 2006 OPERATING CHARACTERISTICS T A=25。C, VDD=PVDD=5V, RL=8Ω speaker, Gain=18dB (unless otherwise noted) PARAMETER PO THD+N Output power per channel (Limited by thermal condition) Total harmonic distortion plus noise TEST CONDITIONS TYP MAX UNIT 2.5 W f=1kHz, RL =4Ω, stereo operation 2 W f=1kHz, RL =8Ω, stereo operation 1.25 W RL =8Ω, PO=1.2W, f=1kHz 0.4％ Thermal trip point 150 Thermal hysteresis 20 。 C 。 C 85 µVrms VDD=AVDD=5V, PO=1W, RL=8Ω 95 dB VDD=AVDD=5V, PO=1W RL=8Ω -68 dB Integrated noise floor 20 Hz to 20 kHz, inputs ac grounded SNR Signal-to-noise ratio Crosstalk Crosstalk between outputs Vn MIN f=1kHz, RL =3Ω, stereo operation VOLTAGE RANGE OF “VOLUME” AT DIFFERENT VDD VDD MAX MIN 5V 2.8V 0V 3.6V 1.9V 0V 3V 1.3V 0V VDD=PVDD=5V VOLTAGE GAIN VOLTAGE of VOLUME 5V 18dB/-27dB 2.8V/0V 3.6V 18dB/-27dB 1.9V/0V 3V 16dB/-27dB 1.4V/0V VOLTAGE GAIN AT TA=25。C, RL=8Ω Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 5 Tai-1 Microelectronics www.taimec.com.tw / Preliminary www.class-d.com.tw TMPA208DS Rev.1.0 June 27, 2006 Table 1. TYPICAL DC VOLUME CONTROL VOLTAGE ON VOLUME PIN (V) 0-0.1 0.1-0.19 0.19-0.29 0.29-0.39 0.39-0.48 0.48-0.58 0.58-0.68 0.68-0.77 0.77-0.87 0.87-0.97 0.97-1.06 1.06-1.16 1.16-1.26 1.26-1.35 1.35-1.45 1.45-1.55 1.55-1.64 1.64-1.74 1.74-1.84 1.84-1.93 1.93-2.03 2.03-2.13 2.13-2.22 2.22-2.32 2.32-2.42 2.42-2.51 2.51-2.61 2.61-2.71 2.71-2.8 2.8-2.9 2.9-VDD TYPICAL GAIN OF AMPLIFIER (dB) -38 -36 -34 -32 -30 -28 -26 -24 -22 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 — *Not fully tested but guaranteed by design. **This table is only for VDD=5V Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 6 www.taimec.com.tw / TMPA208DS Preliminary Tai-1 Microelectronics www.class-d.com.tw Rev.1.0 Physical Dimensions June 27, 2006 (IN MILLIMETERS) ± 7.72 TYP 4.16 TYP (1.78 TYP) 0.42 TYP 0.65 TYP LAND PATTERN TSSOP20 Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 7 Tai-1 Microelectronics www.taimec.com.tw / Preliminary www.class-d.com.tw TMPA208DS Rev.1.0 June 27, 2006 IMPORTANT NOTICE Tai-1 Microelectronics Corp. reserves the right to make changes to its products and services and to discontinue any product or service without notice. Customers should obtain the latest relevant information for reference. Testing and quality control techniques are used to screen the parameters. Testing of all parameters of each product is not necessarily performed. Tai-1 Microelectronics Corp. assumes no liability for applications assistance or customer product design. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. Reproduction of information in data sheets or related documentation is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Tai-1 Microelectronics Corp. is not responsible or liable for such altered documentation. Resale of Tai-1 Microelectronics Corp. products or services with statements different from the parameters stated by Tai-1 Microelectronics Corp. for that product or service voids all express and any implied warranties. Tai-1 Microelectronics Corp. is not responsible or liable for any such statements. Copyright ©2005,Tai-1 Microelectronics Corp. Copyright ©2005,Tai-1 Microelectronics Corp. PDF created with pdfFactory trial version www.pdffactory.com 8