TA2123AF
TOSHIBA Bipolar Integrated Circuit Silicon Monolithic
TA2123AF
1.5V Stereo Headphone Amplifier
The TA2123AF is the system amplifier IC which is developed
for playback stereo headphone equipments. It is built in dual
auto鈭抮everse preamplifiers, dual power amplifiers with bass /
treble boost function, AMS (automatic music sensor) function,
beep function, AGC for power amplifier etc.
Features
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Power amplifier stage
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In case of output coupling type, the supply current
decreases.
(built鈭抜n center amplifier switch)
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Built鈭抜n bass boost function
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Built鈭抜n treble boost function
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Built鈭抜n power amplifier muting function
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Built鈭抜n input terminal for beep signal
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Built鈭抜n input capacitor for reducing buzz noise
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G
V
= 24dB (typ.)
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Built鈭抜n AGC circuit (in case of boost mode, this circuit operates.)
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Low supply current
(V
CC
= 1.3V, f = 1kHz, R
L
= 32鈩? Ta = 25擄C, typ.)
No Signal
Output coupling type
OCL type
1.5mA
2.2mA
0.1mW 脳 2
3.0mA
4.9mA
0.5mW 脳 2
5.0mA
8.6mA
Weight: 0.17g (typ.)
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Preamplifier stage
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Auto-reverse compatible
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Built-in input capacitor for reducing buzz noise
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Input coupling condensor-less
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Built-in metal mode drivers
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Preamplifier muting function
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Built-in ripple filter circuit
Built-in AMS (automatic music sensor) function (mixer amplifier and level comparator)
Built-in power switch
Operating supply voltage range (Ta = 25擄C)
V
CC (opr)
= 0.95~2.2V
1
2002-10-30