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參數(shù)資料
| 型號： | BL34118 |
| 廠商： | 上海貝嶺股份有限公司 |
| 英文描述： | Voice Switched Speakerphone Circuit |
| 中文描述： | 語音開關(guān)揚聲器電路 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大?。?/td> | 567K |
| 代理商： | BL34118 |
BL34118
http://www.belling.com.cn
- 6 -
8/15/2006
Total
11 Pages
Wrote by 2006
LEVEL DETECTORS AND BACKGROUND NOISE MONITORS
(T
A
= +25
°
C)
Transmit-Receive Switching Threshold
( Ratio of Current at RLI1 + RLI2 to 20 uA at TLI1 + TLI2 to
switch from Tx to Rx)
I
TH
0.8
1.0
1.2
Source Current at RLO1, RLO2, TLO1, TLO2
I
LSO
-
-2.0
-
mA
Sink Current at RLO1, RLO2, TLO1, TLO2
I
LSK
-
4.0
-
μ
A
μ
A
CPR, CPT Output Resistance ( Iout = 1.5 mA)
R
CP
-
35
-
CPR, CPT Leakage Current
I
CPLK
-
-0.2
-
FILTER
(T
A
= +25
°
C)
Voltage Offset at FO (V
FO
– VB, 220 k
from V
B
to FI)
FO
VOS
-200
-90
0
mV
FO Sink Current
I
FO
150
260
400
μ
A
FI Bias Current
I
FI
-
-50
-
nA
SYSTEM DISTORTION
(T
A
= +25
°
C)
Rx Mode ( From FI to RXO, FO connected to RXI)
THD
R
-
0.5
3.0
%
Tx Mode ( From MCI to HTO-/HTO+, includes Tx attenuator)
THD
T
-
0.8
3.0
%
1. All currents into a devices pin are positive, those out of a pin are negative, Algebraic convention rather than magnitude is used to define limits.
R
-
+
-
+
R
VB
VB
Vin
HTI
10 K
0.1
1
51 K
X1 Instr.
Amplifier
To Dist.
Analyzer
HTO-
HTO+
FIGURE 1 – HYBRID AMPLIFIER DISTORTION TEST
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