參數(shù)資料
型號(hào): 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(yǔ)音開(kāi)關(guān)揚(yáng)聲器電路
文件頁(yè)數(shù): 3/11頁(yè)
文件大?。?/td> 567K
代理商: BL34118
BL34118
http://www.belling.com.cn
- 3 -
8/15/2006
Total
11 Pages
Wrote by 2006
BLOCK DIAGRAM
Volume
Control
Power
Amplifier
Speaker
Microphone
Mute
Tx
Attenuator
Rx
Attenuator
Attenuator
Control
Background
Noise Monitor
Level
Detectors
Level
Detectors
Background
Noise Monitor
Bias
Filter
-1.0
AGC
ZB
Ring
Tip
Vcc
Chip
Disable
Dial Tone
Detector
ABSOLUTE MAXIMUM RATINGS
Parameter
Value
-1.0, +7.0
Units
Vdc
Supply Voltage (Pin 4)
Voltage at CD (Pin 3), MUT (Pin 12)
-1.0, Vcc + 1.0
Vdc
Voltage at VLC (Pin 13)
-1.0, Vcc + 0.5
Vdc
Voltage at TXI (Pin 9), RXI (Pin21), FI (Pin 2)
-0.5, Vcc + 0.5
Vdc
o
C
Storage Temperature Range
RECOMMENDED OPERATING LIMITS
-65 to +150
Parameter
Min
3.5
Typ
Max
6.5
Units
Vdc
Supply Voltage (Pin 4)
-
CD Input (Pin 3), MUT Input (Pin 12)
0
-
Vcc
Vdc
I
VB
(Pin 13)
-
-
500
μ
A
VLC ( Pin 13)
0.3xVB
-
VB
Vdc
Attenuator Input Signal Voltage (Pins 9, 21)
0
-
350
mVrms
Microphone Amplifier, Hybrid Amplifier Gain
0
-
40
±
2.0
±
1.0
±
5.0
+60
dB
Load Current @ RXO, TXO (Pins 8, 22)
@ MCO (Pin 10)
@ HTO-, HTO+ (Pins 6, 5)
0
0
0
-
-
-
mA
Ambient Operating Temperature Range
-20
-
°
C
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