TS486 Datasheet, PDF (3/31 Pages) STMicroelectronics – 100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE

TS486-TS487
FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS
V_CC from +5V to +2V, GND = 0V, T_amb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
R_{IN 1,2 Input Resistance} ¹⁾
Gain value for Gain TS486/TS487-1
G
Gain value for Gain TS486/TS487-2
Gain value for Gain TS486/TS487-4
1. See figure 30 to establish the value of Cin vs. -3dB cut off frequency.
Typ.
20
0dB
6dB
12dB
Max.
Unit
kΩ
dB
APPLICATION COMPONENTS INFORMATION
Components
Functional Description
R_IN1,2
C_IN1,2
R_FEED1,2
C_S
C_B
C_OUT1,2
Inverting input resistor which sets the closed loop gain in conjunction with R_FEED. This resistor also
forms a high pass filter with C_IN (fc = 1 / (2 x Pi x R_IN x C_IN)) . Not needed in fixed gain versions.
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminal.
Feedback resistor which sets the closed loop gain in conjunction with R_IN.
A_V= Closed Loop Gain= -R_FEED/R_IN. Not needed in fixed gain versions.
Supply Bypass capacitor which provides power supply filtering.
Bypass capacitor which provides half supply filtering.
Output coupling capacitor which blocks the DC voltage at the load input terminal.
This capacitor also forms a high pass filter with RL (fc = 1 / (2 x Pi x R_L x C_OUT)).
TYPICAL APPLICATION SCHEMATICS
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