mh89726 Mitel, mh89726 Datasheet
mh89726
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mh89726 Summary of contents
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... Bias MT8972 Loop Extender Circuits MH89726/728 10 Pin SIL Package Description The MH89728 and MH89726 are thick film hybrid devices which may be used to extend the operating range of the MT8972 (DNIC). The hybrids combine signal equalization and amplification for the receive and transmit paths on each device. ...
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... MH89726/728 Pin Description Pin # Pin Name 1 TX Transmit Gain connected to Pin 2. An increase in gain can be achieved by GAIN connecting an external resistor R calculated using; A= (R/24) + 2.8, where A=Gain and Transmit Output. Connect to the termination network. OUT 3 RX Negative Receive Signal. Connect to TX ...
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... Supply DUAL SINGLE SINGLE *Use 0.33 F capacitor to GND Figure 3 - Typical Connection Diagram for MT8972 and MH89726/728 The LEC is powered typically from ±15 Volts if dual power supplies are available. Alternately 0 to +30 Volts Volts can be used if only a single power supply is available. For a detailed ...
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... NOTES: -D1, D2 IN5817 (Schottky) -Solid jumpers used to connect the loop extender -Dotted jumpers connect MT8972 without loop extender Figure 4 - Typical Application of the Loop Extender 9-130 MH89726 (160 kbit/s) CABLE 24 AWG (8.0 dB/km at 120 kHz) 0.0 to 4.1 km 0.65 to 5.1 km MH89728 (80 kbit/s) CABLE 24 AWG (6.9 dB/ kHz (Note 1) ...
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... Sym Min Typ Max I 7 9.0 TX -170 0.0 RX 12.0 RX 10.0 MH89726/728 Units Test Conditions V Note 1 V Note 2 mA Units Test Conditions kHz for 80 kbit/s @120 kHz for 160 kbit kHz for 80 kbit/s @120 kHz for160 kbit/s ° kHz for 80 kbit/s ...
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... MH89726/728 1.020 - 0.980 (2.590 - 2.490) 0.405 - 0.345 (1.029 -0.876) 0.105 - 0.095 (0.241 - 0.267) All dimensions are in inches (centimeters). 9-132 0.025 - 0.015 (0.064 - 0.038) Figure 4 - Mechanical Data Advance Information 0.140 (0.356) 0.190 - 0.180 (0.483 - 0.457) 0.01 (0.025) ...