MT91600

www.DataSheet4U.com MT91600 Programmable SLIC Data Sheet Features Transformerless 2 W to 4 W 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 -22 V to -72 V battery operation Ordering Information MT91600AN MT91600ANR MT91600AN1 MT91600ANR1 *Pb 28 Pin SSOP 28 Pin SSOP 28 Pin SSOP* 28 Pin SSOP* Free Matte Tin Tubes Tape & Reel Tubes Tape & Reel February 2005 -40° C to +85 ° C Description The Zarlink 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, 2 W to 4 W 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...