SA7411 1-CH AUDIO POWER AMPLIFIER(1W) DESCRIPTION SA7411 is a single channel audio power amplifier capable of delivering 1W of maximum output power to a 8Ω load using a single 9V DIP-8-300-2.54 supply at 10% THD. FEATURES * Max power 1W SOP-8-225-1.27 * Single supply operation * Integrated standby and mute function * Internal thermal protection ORDERING INFORMATION APPLICATIONS * Audio power amplifier with high performance * TV * Monitor Device Package SA7411 DIP-8-300-2.54 SA7411S SOP-8-225-1.27 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Tamb=25°C, unless otherwise specified) Characteristic Symbol Value Storage Temperature Tstg -55 ~ +150 °C Operating Ambient Temperature Topr -25 ~ +70 °C Operating Ambient Pressure Popr 1.013×105 ± 0.61×105 Pa Operating Constant Acceleration Gopr 9810 m/s2 Operating Shock Sopr 4900 m/s2 Supply Voltage VCC 14 V Supply Current ICC 1.5 A Power Current PD 422 mW Operating Supply Voltage Range VCC 7.5 ~ 13.5 V HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn Unit REV:1.0 2005.07.11 Page 1 of 4 SA7411 ELECTRICAL CHARACTERISTICS (Unless otherwise specified: VCC= 9V; RL =8Ω, Tamb =25°C, f =1kHz) Min. Typ. Max. Unit Quiescent Current Characteristics Symbol ICQ STBY/MUTE=3.3V; No input Test Condition -- 13 40 mA Standby Current ISTB STBY/MUTE =0V; No input -- 5 50 µA Stand-by On Voltage Vstb-on No input -- -- 0.4 V Stand-by Off Voltage Vstb-off No input 1.2 -- -- V -- 0.25 0.5 mVrms 30 50 -- dB STBY/MUTE =3.3V; No input; Output End Noise Voltage Vno Ripple Rejection Ratio RR Voltage Gain GV STBY/MUTE =3.3V; Po=0.25W 31.5 33.5 35.5 dB Total Harmonic Distortion THD STBY/MUTE =3.3V; Po=0.25W -- 0.15 0.5 % Maximum Output Power PO 0.8 1.0 -- W Muting Ratio MR STBY/MUTE=2.0V to 2.7V 65 75 -- dB Rg=10kΩ STBY/MUTE =3.3V; Rg=10kΩ; Vripple=1Vrms; fripple=120Hz STBY/MUTE =5.0V; THD=10%; VOL=3.3V Mute On Voltage Mute-on MR 65dB -- -- 2 V Mute Off Voltage Mute-off Gv 31.5dB 2.7 -- -- V -- 6.0 6.3 V Under Voltage Lock Up UVLO STBY/MUTE =3.3V; ICQ<1mA; No Output PIN CONFIGURATION PIN DESCRIPTIONS Pin No. Pin Name Pin Description 1 INPUT 2 STBY/MUTE 3 RF 4 GND Signal Ground 5 VCC Voltage of supply 6 OUTPUT Output pin 7 PW_GND Power ground 8 NC Input pin Standby and Mute Ripple Rejection Not connect HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.07.11 Page 2 of 4 SA7411 FUNCTION DESCRIPTIONS 1. Standby and Mute Function The PIN2 (STBY/MUTE) controls the amplifier status by three different thresholds: Ø When Vpin2 is between 0V and 0.4V, the bias of amplifier is off and the amplifier is in standby mode. Ø When Vpin2 is between 1.2V and 2.0V, the bias of amplifier is on but the gain of the circuit is zero. The amplifier is in mute mode. Ø When Vpin2 is between2.7V and 3.3V, the amplifier is play mode. 2. Ripple Rejection Ground the RF so that there will be no difference in electric potential between the RF and ground. 3. Thermal Protection The thermal protection circuit operates at a Tj of approximately 145°C. The thermal protection circuit is reset automatically when the temperature drops. 4. Absence of Short Protection Make sure that the IC is free of output pin short to ground, output pin short to VCC, IC mount in reverse direction and load short because there is no such protection in the IC. The IC will be damaged under such conditions and smoke may be observed. APPLICATION CIRCUIT SA7411 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.07.11 Page 3 of 4 SA7411 PACKAGE OUTLINE DIP-8-300-2.54 UNIT: mm SOP-8-225-1.27 UNIT: mm 0.42 0.20±0.05 1.27 5.0±0.3 0.15±0.10 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.07.11 Page 4 of 4