參數(shù)資料
型號(hào): MT91610AQ
廠商: Mitel Networks Corporation
英文描述: Analog Ringing SLIC
中文描述: 模擬振鈴用戶接口
文件頁(yè)數(shù): 1/20頁(yè)
文件大?。?/td> 251K
代理商: MT91610AQ
1
Features
Transformerless 2W to 4W conversion
Controls battery feed to line
Programmable line impedance
Programmable network balance impedance
Off-hook and dial pulse detection
Protects against GND short circuit
Programmable gain
Programmable constant current mode with
constant voltage fold over
Transformerless balanced ringing with
automatic ring trip circuit. No mechanical relay
Supports low voltage ringing
Line polarity reversal
On-hook transmission
Power down and wake up capability
Meter pulse injection
Ground Key detection
Applications
Line interface for:
PABX
Intercoms
Key Telephone Systems
Control Systems
Description
The Zarlink MT91610, with an external bipolar driver
(Figure 4), provides an interface between a switching
system and a subscriber loop. The functions
provided by the MT91610 include battery feed,
programmable constant current with constant
voltage fold over for long loops, 2W to 4W
conversion, off-hook and dial pulse detection, direct
balance ringing with built in ring tripping, unbalance
detection, user definable line and network balance
impedance’s and gain, and power down and wake
up. The device is fabricated as a CMOS circuit in a
36 pin QSOP package.
Figure 1 - Functional Block Diagram
TD
RING
RF
Tip Drive
Controller
Audio Gain & Network
Balance Circuit
2 W to 4 W
Conversion & Line
Impedance
Line
Reverse
Driver
Line Sense
Over-Current
Protection Circuit
Ring Drive
Controller
Loop Supervision
TIP
RC
VR
Z3
Z2
CP5
LR
V
G
V
C
C
S
V
GTX1
GTX0
VX
CP6
RV
RD
U
D
V
PD
ESI
ESE
CP4
CP7
C
Ringing
Controller
TF
Z1
Package Information
MT91610AQ
36 Pin QSOP Package
-40
°
C to +85
°
C
MT91610
Programmable Ringing SLIC
Preliminary Information
DS5181
ISSUE 6
July 2001
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