參數(shù)資料
型號(hào): U4037B
英文描述: LOW VOLTAGE SPEECH CIRCUIT WITH TONE RINGER INTERFACE
中文描述: 低電壓語音電路的音調(diào)振鈴接口
文件頁數(shù): 2/6頁
文件大?。?/td> 70K
代理商: U4037B
U4037B
TELEFUNKEN Semiconductors
Rev. A1, 08-Oct-96
Preliminary Information
2 (6)
Block Diagram / Applications
Microphone
amplifier
MIC2
MICO
+
MIC1
TIN
Transmit
amplifier
Sidetone
amplifier
Supply current
regulator
Control
function
Receiver
attenuation
Receiving
amplifier
Mute control
VL
ST
RECIN
AGC current
generator
RECO1
AGC
VI
VB
Ringer volume
control
Supply
Comparator
with hysteresis
Bandgap
reference
OUT
Tip
Ring
620
22 F
VDD
MELI
VOL2
VOL1
MUTE
DTMF
Receive volume
control
RFO
9879
SWAMP
RDC
GND
RECO2
to C
Figure 1. Block diagram
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