SGSC34119 Datasheet, PDF (2/9 Pages) SeCoS Halbleitertechnologie GmbH – Low Power Audio Amplifier

Elektronische Bauelemente
SGSC34119
Low Power Audio Amplifier
PIN FUNCTION DESCRIPTION
SYMBOL
CD
FC2
FC1
VIN
VO1
VCC
GND
VO2
PIN
1
2
3
4
5
6
7
8
DESCRIPTION
Chip Disable-Digital input. A Logic “0” (<0.8V) sets normal operation. A
Logic “1” (≧2V) sets the power down mode. Input impedance is
nominally 90kΩ.
A capacitor at this pin increases power supply rejection, and affects
turn-on time. This pin can be left open if the capacitor at FC1 is sufficient.
Analog ground for the amplifiers. A 1.0µF capacitor at this pin (with a
5.0µF capacitor at Pin 2) provides (typically) 52dB of power supply
rejection. Turn-on time of the circuit is affected by the capacitor on this
pin. This pin can be used as an alternate input.
Amplifier input. This input capacitor and resistor set low frequency rolloff
and input impedance. The feedback resistor is connected to this pin and
VO1
Amplifier Output #1. The dc level is ≅ (VCC – 0.7)/2.
DC supply voltage (+2V to +16V) is applied to this pin.
Ground pin for the entire circuit.
Amplifier Output #2. This signal is equal in amplitude, but 180°
out-of-phase with that at VO1. The dc level is ≅ (VCC – 0.7)/2.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Maximum Output Current at VO1, VO2
Maximum Voltage @ VIN, FC1, FC2, CD
Applied Output Voltage to VO1, VO2 When Disabled
Junction Temperature
SYMBOL
VCC
PC
TJ
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Voltage @ CD (PIN 1)
Load Impedance
Peak Load Current
Differential Gain (5.0kHz Bandwidth)
Ambient Temperature
SYMBOL
VCC
VCD
RL
IL
AVD
TA
MIN
2.0
0
8.0
-
0
-20
VALUE
-1.0 to 18
±250
-1.0, VCC+1.0
-1.0, VCC+1.0
-55, 140
UNIT
Vdc
mA
Vdc
°C
MAX
16
VCC
-
±200
46
70
UNIT
Vdc
Ω
mA
dB
°C
17-Dec-2009 Rev. A
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