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MT91600

MITEL
Part Number MT91600
Manufacturer MITEL
Description Programmable SLIC
Published Mar 9, 2007
Detailed Description www.DataSheet4U.com MT91600 Programmable SLIC Preliminary Information Features • • • • • • • • • Transformerless 2W to ...
Datasheet PDF File MT91600 PDF File

MT91600
MT91600

Overview
www.
DataSheet4U.
com MT91600 Programmable SLIC Preliminary Information Features • • • • • • • • • Transformerless 2W to 4W conversion Controls battery feed to line Programmable line impedance Programmable network balance impedance Off-hook and dial pulse detection Ring ground over-current protection Programmable gain Programmable constant current feed -22V to -72V battery operation DS5057 ISSUE 7 August 1999 Package Information MT91600 28 Pin SSOP Package -40°C to +85°C Description The Mitel MT91600 provides an interface between a switching system and a subscriber loop, mainly for short loop SLIC applications.
The functions provided by the MT91600 include battery feed, programmable constant current, 2W to 4W conversion, off-hook and dial pulse detection, user definable line and network balance impedance’s and the capability of programming the audio gain externally.
The device is fabricated as a CMOS circuit in a 28 pin SSOP package.
Applications Line interface for: • • • • PABX/ONS Intercoms Key Telephone Systems Control Systems X3 X2 X1 TD Tip Drive Controller Audio Gain & Network Balance Circuit VX VR TF TIP RING RF C3A C3B RV RD Over-Current Protection Circuit Relay Driver Ring Drive Controller Loop Supervision Line Sense 2 W to 4 W Conversion & Line Impedance Z3 Z2 Z1 RLYC RLYD IC VREF SHK C1 C2A C2B VDD GND VEE Figure 1 - Functional Block Diagram 1 MT91600 VDD TD TF TIP RING VREF IC RF RV RD C3A C3B C2B C2A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VEE GND RLYD RLYC SHK C1 X2 VR X3 VX X1 Z3 Z2 Z1 Preliminary Information Figure 2 - Pin Connections Pin Description Pin # 1 2 3 4 5 6 Name VDD TD TF TIP RING VREF Positive supply rail, +5V.
Tip Drive (Output).
Controls the Tip transistor.
Tip Feed.
Connects to the Tip transistor and to the TIP lead via the Tip feed resistor.
Tip.
Connects to the TIP lead of the telephone line.
Ring.
Connects to the RING lead of the telephone line.
Reference Voltage (Input).
This...


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