MT89728 Ver la hoja de datos (PDF) - Mitel Networks
Número de pieza
componentes Descripción
Fabricante
MT89728 Datasheet PDF : 6 Pages
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MH89726/728
Advance Information
TXGAIN
1
TXOUT
2
RXIN +
3
RXIN -
4
V-
5
VBias
6
V+
7
TEST
8
RXOUT
9
TXIN
10
Figure 2 - Pin Connections
Pin Description
Pin #
1
2
3
4
5
6
7
8
9
10
Pin Name
TXGAIN
TXOUT
RXIN-
RXIN+
V-
VBias
V+
TEST
RXOUT
TXIN
Description
Transmit Gain. To be connected to Pin 2. An increase in gain can be achieved by
connecting an external resistor REXT between Pin 1 and Pin 2. The resultant gain is
calculated using; A= (R/24) + 2.8, where A=Gain and R= REXT (kΩ).
Transmit Output. Connect to the termination network.
Negative Receive Signal. Connect to TXOUT, Pin 2.
Positive Receive Signal. Connected to line transformer.
Negative power supply.
Internal Bias Voltage. Connect to GND through 0.33 µF for single power supplies.
Connect to GND directly for split power supplies.
Positive power supply.
Test. Used for production testing. Leave unconnected.
Receive Output. Connect to LIN (Pin 21) of MT8972.
Transmit Input. Connect to LOUT (Pin 1) of MT8972.
9-128
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