MT91610AQ Zarlink Semiconductor, MT91610AQ Datasheet

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MT91610AQ

Manufacturer Part Number
MT91610AQ
Description
Description = Short Loop Subscriber Line Interface Circuit (SLIC) With 2-4 Wire Conversion, Programmable Line Impedance, Ringing Amplification And On-hook Transmission For Did ;; Package Type = Qsop ;; No. Of Pins = 36
Manufacturer
Zarlink Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
MT91610AQ
Manufacturer:
WIZNET
Quantity:
570
Part Number:
MT91610AQW
Manufacturer:
SANKEN
Quantity:
12
Features
Applications
Line interface for:
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
PABX
Intercoms
Key Telephone Systems
Control Systems
RING
TIP
RF
TD
TF
RD
Protection Circuit
CP4
Over-Current
Tip Drive
Ring Drive
Controller
Controller
Line Sense
CP6
CP7
PD
Figure 1 - Functional Block Diagram
Controller
Ringing
RV
RC
Loop Supervision
Conversion & Line
DS5181
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
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.
2 W to 4 W
Impedance
GTX1
MT91610AQ
Audio Gain & Network
ESE
Balance Circuit
Programmable Ringing SLIC
Package Information
ESI
constant
-40 C to +85 C
GTX0
Preliminary Information
36 Pin QSOP Package
Reverse
ISSUE 6
Driver
Line
current
MT91610
with
CP5
VX
VR
Z3
Z2
Z1
LR
constant
July 2001
1

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MT91610AQ Summary of contents

Page 1

... Ring Drive RD Controller CP4 CP6 CP7 DS5181 MT91610AQ 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 voltage fold over for long loops ...

Page 2

MT91610 Pin Description Pin # Name 1 VDD Positive supply rail, +5V Tip Drive (Output). Controls the Tip transistor. Connects 330nF cap to GND Tip Feed (Output). Connects to the Tip transistor and to TIP via ...

Page 3

Preliminary Information Pin Description (continued) Pin # Name 20 Z1 Line Impedance Node 1. A resistor of scaled value "k" is connected between Z1 and Z2. This connection can not be left open circuit. 21 CP5 Line Impedance AC couple. ...

Page 4

MT91610 Impedance Programming The MT91610 allows the designer to set the device’s impedance across TIP and RING, (Z network balance impedance external low cost components. The impedance ( set by R4, R5, while the TR network ...

Page 5

Preliminary Information For convenience, a graph which plots the value versus the approximated loop current is shown in Figure 6. This graph implies the SLIC is operating in constant current mode. As +5V is used as ...

Page 6

MT91610 Power Down And Wake Up The MT91610 should normally be powered down to conserve energy by setting the PD pin to +5V. The SHK pin will be asserted if the equipment side (2 wire) goes off hook. The local ...

Page 7

Preliminary Information Given the parameters as follows 100 Expected maximum loop impedance = 1.6k including Ra and Rb) Desirable Loop Current = 20mA 6*VREF=8V Then | VBAT | (min) = 1600 * 0.020 +10 = 42V ...

Page 8

MT91610 NO CONNECT F1 TIP TIP PR1 RING RING F2 TIP/RING DRIVER +5V 1 VDD TCI 19 RF TIP 3 RF TIP 18 RING TF 4 RING RCI RC 16 -5V ...

Page 9

Preliminary Information Component List* for a Typical Application with a Resistive 600 Line Impendance - Figure 4 for component designation and recommended configuration R1 200k R3 200k R5 300k R7 300k R9 200k R11 200k R13 51k C1 220nF, 5% ...

Page 10

MT91610 PIN 13 AGND AGND PIN 1 VDD R21 PIN R22 R23 R26 R25 Q13 Q4 R24 PIN 6 Vee VEE TCI PIN RCI R7 PIN 5 ...

Page 11

Preliminary Information Component List for the TIP/RING Line Driver - configuration Ra 100 %1, 0.1% matched, 0.5W R1 2k5 R3 2k5 R11 2k5 R13 2k5 R15 R17 R19 R21 30k R23 k R25 k R27 k R29 ...

Page 12

MT91610 145 140 135 130 125 120 115 110 105 R2 (Kohm) 100 Figure 6 - Approximated R2 (Kohm) Versus Programmed Loop Current (mA) for constant ...

Page 13

Preliminary Information 400 800 1000 600 0 200 Figure 7 - Loop Current (mA) Versus Loop ...

Page 14

MT91610 Absolute Maximum Ratings* Parameter 1 DC Supply Voltages 2 Ringing Voltage 3 Voltage setting for Loop Current 4 Overvoltage Tip/GND Ring/GND, Tip/Ring 5 Ringing Current 6 Tip / Ring Ground over-current 7 Storage Temp 8 Package Power Dissipation 9 ...

Page 15

Preliminary Information DC Electrical Characteristics Characteristics 1 Supply Current 2 Supply Current 3 Constant Current Line Feed 4 Operating Loop Constant Current Mode (including the DC resistance of the Telephone Set) 5 Off Hook Detection Threshold 6 RC, LR Input ...

Page 16

MT91610 AC Electrical Characteristics Characteristics 1 Ring Trip Detect Time 3 Return Loss (2W) 4 Transhybrid Loss 5 Output Impedance Gain Wire @ 1kHz 7 Gain Relative to 1kHz 8 Gain ...

Page 17

Preliminary Information Test Circuits Figures 8,9,10,11,12 are for illustrating the principles involved in making measurements and do not necessarily reflect the actual method used in production testing ...

Page 18

MT91610 Long. Bal. = 20*Log CMR = 20*Log Gain = 20*Log(2*V /V ...

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...

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... For more information about all Zarlink products Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries (collectively “Zarlink”) is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use ...

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