参数资料
型号: TA2152FN
元件分类: 音频/视频放大
英文描述: 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
封装: 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24
文件页数: 13/16页
文件大小: 364K
代理商: TA2152FN
TA2152FN
2002-03-12
6
(3) Adjustment of DC output voltage
Please perform the OUT ADJ pin (pin 24) as follows by the power supply of VCC1 and VCC2.
If a boost voltage is applied to VCC1, VCC2 is connected to a battery and the difference between VCC1 and
VCC2 is greater than or equal to 0.7 V, short pins 23 and 24 together. In this case the DC output voltage
will be
2
VCC2 .
If the difference between VCC1 and VCC2 is less than 0.7 V, or if VCC1 and VCC2 are connected to the same
power supply, leave pin 24 open.
In these cases the DC output voltage will be
2
V
0.7
VCC2
.
However, when the voltage level of VCC2 is high, the DC output voltage is will be set to approximately 1.4 V.
(4) RF IN pin
The ripple rejection ratio can by improved by connecting a capacitor to this pin. Connection of a capacitor is
recommended, particularly for output-coupling type.
(5) Output application of power amplifier
For output-coupling type the center amplifier is not used with the result that current consumption is low.
Please set the C-AMP SW pin (pin 21) accordingly.
Output-coupling type: Pin 21 is connected to GND.
OCL type: Pin 21 is open.
RR
C (RF IN)
RF IN capacitance
C
(
F)
R
ippl
e
rej
e
cti
on
rati
o
R
(dB
)
80
70
60
50
30
40
0.1
0.2
0.5
1
2
5
10
Output-coupling type
VCC1 = 2.4 V
VCC2 = 1.2 V (ripple signal applied)
fr = 100 Hz
Vr = 20dBV
BIAS IN
= 4.7 F
Open
Figure 3
Improvement of ripple rejection ratio
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