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參數(shù)資料
| 型號： | AN6215S |
| 廠商： | PANASONIC CORP |
| 元件分類： | 通信及網(wǎng)絡 |
| 英文描述： | Circular Connector; No. of Contacts:6; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:9; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:9-6 RoHS Compliant: No |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO8 |
| 封裝： | 0.225 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 56K |
| 代理商： | AN6215S |
5
ICs for Telephone
AN6215S
I
Application Circuit Example
System configuration
Detects input of microphone and gives attenuation to a receiver system
Operating point and variable width of attenuator can be set with external resistor respectively.
1
2
3
4
8
7
6
5
R2
C1
C2
GND
BN
C3
Microphone
R3
C4
R1
VCSW
T
R
Circuit
I/F
Microphone
amp.
Receiver amp.
Receiver amp.
Speech amp.
VCSW: V
REF
control switch
SW on: V
REF
=
2.0 V
SW off: V
REF
=
1.15 V
R1: Detection circuit gain adjustment resistor
R2: Receiver
Gain width adjustment resistor
R3, C3: Resistor and capacitor to determine
attack-recovery time of transmitter
V
REF
V
CC
Det.
CC
Buff
Characteristics
RX out
TX in
Gain
=
8 dB
(R2
=
68 k
)
RX out
TX in
Inclination:
R
=
0.6 dB/dB
39 dBm
(R1
=
10 k
)
Figure 1. Variable width of attenuation
V
CC
V
REF
(V)
2.0
1.15
0.3
V
RB
(Base-set mode)
V
RH
(Hand-set mode)
V
DET
Reference voltage
Figure 3. Operation of variable V
REF
circuit
Figure 2. Operating point of attenuation
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