BL8602 Power Audio Amplifier DESCRIPTION BL8602 power audio ampli
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BL8602
BL8602 Power Audio Amplifier
DESCRIPTION BL8602 power audio amplifier integrated circuit intended(primarily) telephone applications, such speakerphones. provides differential speaker outputs maximize output swing supply voltages(2.0 minimum).Coupling capacitors speaker required. gain this amplifier controlled easily external resistors. FEATURES Wide operating supply voltage: Vcc=2V~16V quiescent supply current(Icc=2.2mA,typ) Medium output power(Po=250mW Vcc=6V, RL=32ohm,THD10%) Load impedance range 8~100ohm Mute function (Icc=55uA, typ) Minimum number external parts required distortion BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS(Ta=25)
PARAMETER Supply Voltage Output Current Maximum Input,Ripple Rejection, Mute Voltage Applied Output Voltage( Output When Disabled) Temperature Junction SYMBOL Vi(max) VALUE -1~18 ±250 -1~Vcc+1 -1~Vcc+1 -55~150 UNIT
http://www.belling.com.cn
8/15/2006
Wrote 2006
Total Pages
BL8602
CONNECTIONS
FUNCTION DESCRIPTION
Symbol Description Analog ground amplifiers. 1.0uF capacitor this (with 5.0uF capacitor provides (typically) 52dB power supply rejection.Turn-on time circuit affected capacitor this pin. This used alternate input. Amplifier input .The input capacitor resistor frequency rolloff input impedence. feedback resistor connected this Vo1. Amplifier Output#1. level (Vcc-0.7V)/2. supply voltage (+2.0V +16V) applied this pin. Ground entire circuit Amplifier Output#2. This signal equal amplitude, 180°outof-phase with that Vo1. level (Vcc-0.7V)/2. Chip Disable-Digital input. Logic (<0.8V) sets normal operation. logic (2.0V) sets power down mode. Input impedance nominally capacitor this increase power supply rejection, affects turn-on time. This left open capacitor sufficient.
RECOMMENDED OPERATION CONDITIONS(Ta=25)
PARAMETER Supply Voltage Load Impedance Peak Load Current Differental Gain(5KHz Bandwidth) Voltage Mute Ambient Temperature SYMBOL IL(peak) Vi(mute) VALUE 2~16 8~100 ±200 0~46 0~Vcc -20~70 UNIT
http://www.belling.com.cn
8/15/2006
Wrote 2006
Total Pages
BL8602
ELECTRICAL CHARACTERISTICS (Vcc=6V, Ta=25,unless otherwise specified)
PARAMETER PARAMETER Operating Current SYMBO TEST CONDITIONS -200
Output Voltage
Output Offset Voltage Output High Level Output Level Input Bias Current Equivalent Resistance PARAMETER Open Loop Gain f<100Hz) Close Loop Gain Output Power
ibias
Vcc=3V, Mute=0.8V Vcc=16V, Mute=0.8V Vcc=3V, Mute=2V RL=16,Rf=75K Vcc=3V Vcc=6V Vcc=12V Vcc=6V,Rf=75K,RL=32 2V<Vcc<16V, Iout= 75mA 2V<Vcc<16V, Iout= 75mA
1.20 6.10 Vcc1 0.16 -100
1.25
Gvop1
Gvo2
f=1KHz, RL=32 Vcc=3V, RL=16,THD Vcc=6V, RL=32,THD Vcc=12V, RL=100, THD10% Vcc=6V, RL=32 ,Po=125mW Vcc3V, RL=8 ,Po=20mW Vcc12V,RL=32, Po=200mW
-0.35
0.35
Total Harmonic Distortion( f=1KHz
Gain Bandwidth Product Power Supply Rejection (Vcc=6V, Vcc=3V) Muting
PSRR C1=,C2=0.01uF C1=0.1uF, C2=0, f=1KHz C1=1uF, C2=5uF, f=1KHz Mute=2V, 1KHz<f<20KHz
Gv(mut Chip Disable input Voltage High
http://www.belling.com.cn
8/15/2006
Wrote 2006
Total Pages
BL8602
APPLICATION CIRCUIT
http://www.belling.com.cn
8/15/2006
Wrote 2006
Total Pages
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