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TA2145AF Datasheet

  • TA2145AF

  • 3 V Stereo Headphone Amplifier (3 V USE)

  • 17頁

  • TOSHIBA

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TA2145AF
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA2145AF
3 V Stereo Headphone Amplifier (3 V USE)
The TA2145AF is developed for play-back stereo headphone
equipments (3 V USE).
It is built in dual preamplifiers, dual OCL power amplifiers,
motor governor, DC volume control and preamplifier on/off switch
etc.
Features
路
Built-in preamplifier
Input coupling condenser-less
Built-in input capacitor for reducing buzz noise
Low noise: V
ni
= 1.2 碌Vrms (typ.)
Preamplifier on/off switch.
路
Built-in power amplifier
OCL (Output condenser-less)
Voltage gain: G
V
= 31 dB (typ.)
路
路
路
路
Built-in motor governor (Current proportion type)
Built-in DC volume control function
ATT = 82dB (Ta = 25擄C, typ.)
Built-in bass boost function
Low supply current (V
CC
= 3 V, f = 1 kHz, PRE OUT = 100 mVrms, Ta = 25擄C, typ.)
路
Quiescent supply current
PRE + PW: I
CCQ
= 8.5 mA
GVN: I
CC
= 2.5 mA
路
0.1 mW 脳 2 ch output
I
CC1
= 9.8 mA (R
L
= 32
鈩?
I
CC2
= 10.5 mA (R
L
= 16
鈩?
路
0.5 mW 脳 2 ch output
I
CC3
= 14.0 mA (R
L
= 32
鈩?
I
CC4
= 16.5 mA (R
L
= 16
鈩?
路
Operating supply voltage range (Ta = 25擄C)
V
CC (opr)
= 1.8~3.6 V
GVN V
CC (opr)
= 2.1~3.6 V (Motor voltage = 1.8 V)
Weight: 0.32 g (typ.)
1
2002-04-19

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