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参数资料
| 型号： | 8229 |
| 厂商： | 友顺科技股份有限公司 |
| 元件分类： | 功率放大器 |
| 英文描述： | LOW FREQUENCY POWER AMPLIFIER |
| 中文描述： | 低频功率放大器 |
| 文件页数： | 3/9页 |
| 文件大小： | 180K |
| 代理商： | 8229 |
UTC TA8229
LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R107-028,A
ELECTRICAL CHARACTERISTICS
(VCC=9V, RL=4, Rg=600, f=1kHz, Ta=25℃, Rf=120, unless otherwise specified.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Quiescent Current
ICCQ
Vin = 0
21
45
mA
Pout (1)
THD = 10%
2.0
2.5
Output Power
Pout (2)
THD = 10%, VCC = 12V
4.6
W
Total Harmonic Distortion
THD
Pout = 0.4W/ch
0.2
1.0
%
GV (1)
Rf = 120, Vout = 0.775Vrms (0dBm)
43
45
47
Voltage Gain
GV (2)
Rf = 0, Vout = 0.775Vrms (0dBm)
56.5
dB
Input Resistance
RIN
30
k
Output Noise Voltage
Vno
Rg = 10k, BW = 20Hz ~ 20kHz
0.3
1.0
mVrms
Ripple Rejection Ratio
R.R.
Rg = 600, fripple = 100kHz
-52
dB
Cross Talk
C.T.
Rg = 600, amp1
2
Vout = 0.775Vrms (0dBm)
-50
dB
Input Offset Voltage
V11, V12
30
60
mV
Stand-by Current
IOFF
SW1
OFF
1
A
APPLICATION INFORMATION AND APPLICATION METHOD
1. Adjustment of voltage gain
The voltage gain GV is obtained as follows by R1, R2 and Rf in Fig.1.
Rf + R1 + R2
GV = 20 log
Rf + R1
When Rf = 0, GV = 56.5dB (Typ.)
When Rf = 120, GV = 45dB (Typ.)
By increasing Rf, reduction of GV is possible. However, since the feedback increase is liable to produce oscillation,
it is recommended to use this at 40dB or over.
+
-
45
30k
AMP
+
-
CNF
Rf
47F
R1
OUTPUT
R2
INPUT
11/12
3/5
Fig.1
10/13
2. Thermal shut-down circuit
The thermal shut-down circuit is built in for the purpose of preventing the destruction of IC due to the abnormal
temperature rise when the heat radiation is insufficient.
The operation temperature is set at radiation Fin temperature 175℃(Typ.). At this temperature or over the bias is
interrupted to prevent the destruction of IC.
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