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U3761MB の電気的特性と機能

U3761MBのメーカーはTEMIC Semiconductorsです、この部品の機能は「Low Voltage Standard Telephone Circuit with 13 Memories」です。


製品の詳細 ( Datasheet PDF )

部品番号 U3761MB
部品説明 Low Voltage Standard Telephone Circuit with 13 Memories
メーカ TEMIC Semiconductors
ロゴ TEMIC Semiconductors ロゴ 




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U3761MB Datasheet, U3761MB PDF,ピン配置, 機能
U3761MB
Low Voltage Standard Telephone Circuit with 13 Memories
Description
TEMIC’s low voltage telephone circuit, U3761MB
performs all the speech and line interface functions
required in an electronic telephone set, the tone ringer, the
pulse and DTMF dialing with redial, notice function, and
13 memories.
Features
Speech Circuit
D Adjustable DC characteristic
D Symmetrical input of microphone amplifier
D Receiving amplifier for dynamic or
piezo-electric earpieces
D Automatic line loss compensation
Dialer
D DTMF / pulse switchable
D Pulse dialling 66/33 or 60/40 or DTMF dialling
selectable by pin
D Selectable flashing duration by key pad
D Pause function
D Last number redial up to 32 digits
D Three by 32 digits direct (one touch) memory
D Ten by 16 digits indirect (two touch) memory
D Notice function up to 32 digits
D Standard low-cost crystal 3.57 MHz or
ceramic resonator
Tone Ringer
D 2 Tone ringer
D Adjustable volume
D RC oscillator
D Adjustable threshold
Benefits
D Low number of external components
D High quality through one IC solution
TELEFUNKEN Semiconductors
Rev. A2, 23-Apr-97
Preliminary Information
1 (23)

1 Page





U3761MB pdf, ピン配列
SDIP40
C1 1
40 R4
C2 2
39 R3
C3 3
38 R2
C4 4
37 R1
Earth 5
36 Mask
XT 6
35 DP
XT 7
MFO 8
GND 9
34 MODE
33 BM
32 HKS
MIC 1 10
31 VDD
MIC 2 11
U3761MB
MICO 12
30 OUT
29 RCK
VL 13
28 VRING
RDC 14
27 VRIAC
NC 15
26 AGC
TIN 16
25 THA
VI 17
MUTE 18
24 ST
23 PRIVACY
VBG 19
22 RECO 1
RECIN 20
21 RECO 2
12631
U3761MB
SSO44
C1 1
44 R4
C2 2
43 R3
C3 3
42 R2
C4 4
41 R1
Earth 5
40 Mask
NC 6
39 DP
NC 7
38 MODE
XT 8
37 BM
XT 9
36 HKS
MFO 10
35 NC
NC 11
34 NC
U3761MB
GND 12
33 VDD
MIC 1 13
32 OUT
MIC 2 14
MICO 15
VL 16
31 RCK
30 VRING
29 VRIAC
RDC 17
28 AGC
TIN 18
27 THA
VI 19
MUTE 20
26 ST
25 PRIVACY
VBG 21
24 RECO 1
RECIN 22
23 RECO 2
12632
TELEFUNKEN Semiconductors
Rev. A2, 23-Apr-97
Preliminary Information
3 (23)


3Pages


U3761MB 電子部品, 半導体
U3761MB
SDIP40 SSO44
14 17
16 18
17 19
18 20
19 21
20 22
22 24
21 23
Symbol
RDC
TIN
VI
MUTE
VBG
RECIN
RECO1
RECO2
Configuration
AGC
ÊÊVL
RDC
TIN
PD
PD
ÊÊ5.6K
ÊÊ16V
ÊÊPD
1V
Ê
VI
16V
PD
MUTE
VBG
REC IN
6.7V
PD
6.7V
PD
Ê30K VBG
MUTE
ÊÊÊVL
Ê60K
RECO2
RECO1
Ê ÊVL
Ê ÊÊ60K 1V
Function
An external resistor (1 W) is
required from this pin to GND to
control the DC input impedance of
the circuit. It has a nominal value
Wof 39 for low-voltage operation.
WValues up to 100 may be used to
increase the available transmit
output voltage swing at the expense
of low-voltage operation.
Input to the line output driver am-
plifier. Transmit AGC applied to
this stage.
This internal voltage bias line must
be connected to VL via an external
resistor, RB, which dominates the
WAC input impedance of the circuit
and should be 680 for an 600
input impedance or 1.2 kfor a
900 input impedance.
Pin for testing
Pin for test mode
Receive amplifier input. The
receiving amplification is regulated
by an AGC.
Output of the receive amplifier.
Dynamic transducers with a
Wminimum impedance of 100 can
be directly driven by these outputs.
RECO2
RECO1
6.7V
ÊÊPD
ÊVL
ÊÊ60K 1V
6.7V
PD
6 (23)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 23-Apr-97

6 Page



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共有リンク

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