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參數(shù)資料
| 型號： | TA2145F |
| 廠商： | Toshiba Corporation |
| 英文描述： | 3V STEREO GEADPHONE AMPLIFIER (3V USE) |
| 中文描述： | 3V的立體聲GEADPHONE放大器（3V的使用） |
| 文件頁數(shù)： | 8/17頁 |
| 文件大?。?/td> | 292K |
| 代理商： | TA2145F |
TA2145AF
2002-04-19
8
Electrical Characteristics
(Unless otherwise specified, V
CC
3 V, Ta 25°C, f 1 kHz, SW2: a, SW5: OPEN
Preamplifier:
R
g
2.2 k , R
L
10 k , SW1: ON, SW3: b, SW4: b
Power amplifier: R
g
600 , R
L
16 , Vol.: max, SW1: OPEN, SW3: a, SW4: a
Motor governor: I
m
100 mA, SW1: OPEN, SW3: b, SW4: b)
Characteristic
Symbol
Test
circuit
Test condition
Min
Typ.
Max
Unit
I
CCQ1
Pre off, V
in
0, Vol.: min,
SW4: b, SW5: ON
7.5
13
Quiescent supply current
I
CCQ2
V
in
0, Vol.: min, SW4: b
8.5
14.5
mA
Open loop voltage gain
G
VO
V
o
10dBV, SW2: b
86
dB
Closed loop voltage gain
G
VC
V
o
10dBV
35
dB
Maximum output voltage
V
om
THD 1%
550
720
mVrms
Total harmonic distortion
THD1
V
o
10dBV
0.02
0.3
%
Equivalent input noise
voltage
V
ni
R
g
BPF 20 Hz~20 kHz,
NAB (G
V
35dB, f 1 kHz)
2.2 k , SW1: OPEN
1.2
2.4
Vrms
Cross talk
CT1
V
o
10dBV
70
dB
Ripple rejection ratio
RR1
f
r
100 Hz, V
r
20dBV
48
dB
Preamplifier muting
attenuation
ATT1
V
o
10dBV, SW5: OPEN
ON
80
dB
Preamplifier on voltage
V
18 (ON)
0
0.5
V
P
Preamplifier off voltage
V
18 (OFF)
V
CC
1.8 V
1.5
1.8
V
Voltage gain
G
V
V
o
10dBV
29
31
33
dB
Channel balance
CB
V
o
10dBV
1.5
0
1.5
dB
Output power 1
P
o1
R
L
16 , THD
10%
17
28
mW
Output power 2
P
o2
R
L
32 , THD
10%
20
mW
Total harmonic distortion
THD2
P
o
1m W
0.5
%
Output noise voltage
V
no
R
g
BPF
600 , SW3: b
20 Hz~20 kHz
270
400
Vrms
Ripple rejection ratio
RR2
f
r
100 Hz, V
r
20dBV
52
dB
Cross talk
CT2
V
o
10dBV
32
dB
P
Dc volume maximum
attenuation
ATT2
V
o
(Vol.: max
10dBV, SW4: a
min)
b
82
dB
Supply current
I
CC
I
m
0
2.5
3.5
mA
Saturation voltage
V
CE (sat)
I
m
200 mA
0.5
V
Reference voltage
V
REF
I
m
100 mA
0.76
0.81
0.86
V
Reference voltage
fluctuation 1
V
REF1
V
CC
2.1~3.6 V
0.25
%/V
Reference voltage
fluctuation 2
V
REF2
I
m
25~250 mA
0.003
%/mA
Reference voltage
fluctuation 3
V
REF3
Ta
25~75°C
0.005
%/°C
Current ratio
K
34.5
37.5
40.5
Current ratio fluctuation 1
K1
V
CC
2.1~3.6 V
0.25
%/V
Current ratio fluctuation 2
K2
I
m
25~250 mA
0.08
%/mA
M
Current ratio fluctuation 3
K3
Ta
25~75°C
0.005
%/°C
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