INTEGRATED CIRCUITS INC.--- AP4890B AP4890B --- 1W AUDIO POWER AMPLIFIER 1. DESCRIPTION : The AP4890B is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The AP4890B is capable of delivering 1W of continuous average power to an 8Ω BTL and with less than 1% distortion (THD+N) from a 5.0V power supply, and 350mW to a 8Ω BTL load from a 3V power supply. The AP4890B provides high quality audio while requiring few extemal components and minimal power consumption. It features a low-power shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The AP4890B contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn-on and turn-off transitions.For maximum flexibility, the AP4890B provides an externally controlled gain (with resistors), as well as an externally controlled turn-on and turn-off times (with the bypass capacitor). 2. FEATURE : 2.5-5.2V operation 65dB PSRR at 217Hz, VDD=5V 0.1µA ultra low current shutdown mode Improved pop & click circuitry No output coupling capacitors, snubber networks or bootstrap capacitors required Thermal shutdown protection External gain configuration capability RoHS compliant and 100% lead(Pb)-free APPLICATIONS Mobile Phones PDAs Portable electronic devices http://www.aplusinc.com.tw Page 1 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B 3. PIN CONFIGURATION (Top View) : ] 4. PIN DESCRIPTION : PIN PIN I/O SHUT DOWN-B 1 I BYPASS 2 I +IN 3 I -IN 4 I VO1 5 O VDD 6 I GND 7 VO2 8 DESCRIPTION The device enters in shutdown mode when a low level is applied on this pin Bypass capacitor pin which provides the common mode voltage Positive input of the first amplifier, receives the common mode voltage Negative input of the first amplifier, receives the audio input signal. Connected to the feedback resistor Rf and to the input resistor Rin. Negative output of the AP4890B. Connected to the load and to the feedback resistor Rf Analog VDD input supply. Ground connection for circuitry. O http://www.aplusinc.com.tw Positive output of the AP4890B. Page 2 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B 5. ABSOLUTE MAXIMUN RATINGS : Supply voltage, VDD -------------------------------------------------------------- 6V Input voltage, VI --------------------------------------------------------- -0.3V to VDD +0.3V Storage temperature rang, Tstg ------------------------------------------ -65 to 150 ESD Susceptibility ----------------------------------------------------------------- 2kV Junction Temperature ------------------------------------------------------------ 150 6. ELECTRICAL CHARACTERISTICS VDD=5V, TA=25 Symbol Parameter Conditions IDD Quiescent Power Supply Current ISD VSDIH VSDIL VOS Shutdown Current Shutdown Voltage Input High Shutdown Voltage Input Low Output Offset Voltage MAX VIN=0V, Io=0A, No load 2.4 5 mA VIN=0V, Io=0A, 8Ω load 2.5 5 mA V SHUT DOWN=0V 0.1 2.0 µA 1.2 9 PO Output Power (8Ω) TWU Wake-up time Thermal Shutdown Temperature Total Harmonic Distortion + Noise Power Supply Rejection Ratio Vripple=200mV sine p-p Input Terminated with 10 ohms to ground Shutdown Time 8Ω load THD+N PSRR TSDT http://www.aplusinc.com.tw MIN UNIT TYP ROUT-GND Resistor Output to GND TSD AP4890B THD=1%; f=1kHz V 0.4 V 5 25 mV 10 11 kΩ 1.1 170 150 PO=0.4 Wrms; f=1kHz Page 3 / 15 55 W 220 ms 170 0.15 % 65(f=217Hz) 67(f=1kHz) dB 1.0 ms Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B 6.1 ELECTRICAL CHARACTERISTICS VDD=3V, TA=25 Symbol Parameter Conditions IDD Quiescent Power Supply Current ISD VSDIH VSDIL VOS Shutdown Current Shutdown Voltage Input High Shutdown Voltage Input Low Output Offset Voltage Output Power (8Ω) TWU Wake-up time Thermal Shutdown Temperature Total Harmonic Distortion + Noise Power Supply Rejection Ratio TSD THD+N PSRR 6.2 MIN UNIT TYP MAX VIN=0V, Io=0A, No load 1.8 4 mA VIN=0V, Io=0A, 8Ω load 1.9 4 mA V SHUT DOWN=0V 0.1 2.0 µA 1.2 ROUT-GND Resistor Output to GND PO AP4890B THD=1%; f=1kHz V 0.4 V 5 25 mV 9 10 11 kΩ 0.28 0.35 120 150 PO=0.4 Wrms; f=1kHz Vripple=200mV sine p-p Input Terminated with 10 ohms to ground 45 W 180 ms 170 0.15 % 65(f=217Hz) 66(f=1kHz) dB ELECTRICAL CHARACTERISTICS VDD=2.6V, TA=25 Symbol IDD ISD PO THD+N PSRR Parameter Quiescent Power Supply Current Shutdown Current Output Power (8Ω) Output Power (4Ω) Total Harmonic Distortion + Noise Power Supply Rejection Ratio http://www.aplusinc.com.tw Conditions AP4890B MIN TYP MAX UNIT VIN=0V, Io=0A, No load 1.7 mA V SHUT DOWN=0V 0.1 0.25 0.32 µA 0.15 % 55(f=217Hz) 56(f=1kHz) dB THD=1%; f=1kHz PO=0.4 Wrms; f=1kHz Vripple=200mV sine p-p Input Terminated with 10 ohms to ground Page 4 / 15 55 Tel : 886-2-2782-9266 W Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B 7. TYPICAL APPLICATION CIRCUIT : http://www.aplusinc.com.tw Page 5 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B http://www.aplusinc.com.tw Page 6 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B Application for VOICE OTP --- aP89xx series IC : PS : the Rdac about 680 ~ 1K Ohm http://www.aplusinc.com.tw Page 7 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B http://www.aplusinc.com.tw Page 8 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B Application for VOICE OTP --- aP89xx series IC & SVR volume adjust : http://www.aplusinc.com.tw Page 9 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B http://www.aplusinc.com.tw Page 10 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B Application for VOICE OTP --- aIVRxx series IC & SVR volume adjust : PS : The aIVRxx series IC must be output [ Busy-H ] to control the shutdown pin of AP4890 IC for standby current control Application for VOICE OTP --- http://www.aplusinc.com.tw aIVRxx series IC : Page 11 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B PACKAGE : DIP-8 http://www.aplusinc.com.tw Page 12 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B PACKAGE : SOP-8 http://www.aplusinc.com.tw Page 13 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B PACKAGE : MSOP-8 http://www.aplusinc.com.tw Page 14 / 15 Tel : 886-2-2782-9266 Ver1.2 INTEGRATED CIRCUITS INC.--- AP4890B REVISION HISTORY : Date Revision # Description July.22.2009 1.0 First Release Aug.27.2009 1.1 Add the MSOP-8 outline http://www.aplusinc.com.tw Page 15 / 15 Tel : 886-2-2782-9266 Page 14 Ver1.2