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ML4665

Micro Linear
Part Number ML4665
Manufacturer Micro Linear
Description Low Cost Single Chip 10BASE-FL Transceiver
Published May 7, 2005
Detailed Description March 1997 ML4665 Low Cost Single Chip 10BASE-FL Transceiver GENERAL DESCRIPTION The ML4665 is a low power, low cost, s...
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ML4665
ML4665


Overview
March 1997 ML4665 Low Cost Single Chip 10BASE-FL Transceiver GENERAL DESCRIPTION The ML4665 is a low power, low cost, single chip 10BASE-FL transceiver.
The ML4665 contains a fiber optic data quantizer and an LED output driver for direct connection to an optical module(s).
The ML4665 offers a standard IEEE 802.
3 AU interface that allows it to be directly connected to industry standard manchester encoder/decoder chips or an AUI connector.
The ML4665 provides a highly integrated solution that requires a minimal number of external components.
The transmitter offers a 100mA maximum current drive output that directly drives a fiber optic LED transmitter.
The receiver offers a highly stable fiber optic data quantizer capable of accepting input signals as low as 2mVP-P with a 55dB dynamic range.
The ML4665 is a lower cost version of the industry standard ML4663.
To achieve lower cost, the ML4665 eliminates some functionality (as described below) and is packaged in a 20-lead PLCC package.
FEATURES s s s s s s s s Lower cost single chip solution for 10BASE-FL internal or external Medium Attachment Units (MAUs) Incorporates an AU interface Highly stable data quantizer with 55dB input dynamic range Input sensitivity as low as 2mVP-P 100mA maximum current driven fiber optic LED driver for accurate launch power Single +5 volt supply No crystal or clock required Link monitor LED indicator BLOCK DIAGRAM Tx+ 7 Tx– 8 VCCTx (+5V) 12 +5V RTSET 9 AVCC 20 AUI RECEIVER FIBER OPTIC LED DRIVER 13 TxOUT Tx SQUELCH 1MHz IDLE SIGNAL JABBER 11 LMON COL RECEIVE SQUELCH COL+ 2 COL– 3 AUI DRIVER 10MHz GATED OSCILLATOR AMP Tx Rx+ 4 Rx– 5 AUI DRIVER LOOPBACK MUX Rx CMP BIAS 19 VIN+ 18 VIN- ∫ VREF LINK DETECT 14 6 10 1 17 15 16 VDC GND VCC (+5V) RRSET LBDIS +5V AGND CTIMER 1 ML4665 PIN CONNECTION ML4665 20-Pin PLCC (Q20) LBDIS COL+ COL– AVCC 20 VIN+ 19 18 17 16 15 9 RTSET 10 RRSET 11 LMON 12 VCCTx 13 TxOUT 14 VIN– AGND VDC CTIMER GND 3 Rx+ Rx– VCC Tx+ Tx– 4 5 6 7 8 2 1 ...


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