參數(shù)資料
型號(hào)： AFCT-5765TPZ
元件分類： 光收發(fā)
英文描述： FIBER OPTIC TRANSCEIVER, 1261-1360nm, 155Mbps(Tx), 155Mbps(Rx), BOARD/PANEL MOUNT, LC CONNECTOR
封裝： ROHS COMPLIANT PACKAGE-20
文件頁(yè)數(shù)： 14/20頁(yè)
文件大小： 653K
代理商： AFCT-5765TPZ
3
LASER DRIVER
& SAFETY
CIRCUITRY
50
50
SO+
SO–
AMPLIFICATION
&
QUANTIZATION
50
50
SI+
SI–
VREFR
TBC
EWRAP
RBC
Rx_RATE
Rx_LOS
GPIO(X)
GP14
REFCLK
Tx_FAULT
TBC
EWRAP
RBC
Rx_RATE
REFCLK
TX[0:9]
RX[0:9]
Tx_FAULT
Tx_DISABLE
TD+
TD–
TX GND
MOD_DEF2
EEPROM
MOD_DEF1
MOD_DEF0
RX GND
4.7 K to 10 K
3.3 V
4.7 K to
10 K
3.3 V
4.7 K to
10 K
4.7 K to
10 K
PROTOCOL
IC
SFP MODULE
VCC,T
1 H
10 F
0.1 F
3.3 V
4.7 K to 10 K
10 F
0.1
F
0.1 F
4.7 K to 10 K
RD+
RD–
Rx_LOS
0.01 F
100
0.01 F
VCC,R
100
50
VCC,R
50
VCC,R
Transmitter Section
The transmitter section includes a 1310 nm Fabry-Perot
laser and a transmitter driver circuit. The driver circuit
maintains a constant optical power level provided that
the data pattern is valid for NRZ code. Connection to the
transmitter is provided via a LC optical connector.
The transmitter has full IEC 825 and CDRH Class 1 eye
safety.
TX_DISABLE
The transmitter output can be disabled by asserting pin
3, TX_DISABLE. A high signal asserts this function while
a low signal allows normal laser operation. The transmit-
ter output can also be disabled and monitored via the
2-wire serial interface. In the event of a transceiver fault,
such as the activation of the eye safety circuit, toggling
of the TX_DISABLE will reset the transmitter, as depicted
in Figure 2.
Figure 2. Typical Application Configuration
TX_FAULT
A laser fault or a low VCC condition will activate the trans-
mitter fault signal, TX_FAULT, and disable the laser. This
signal is an open collector output (pull-up required on
the host board); A low signal indicates normal laser op-
eration and a high signal indicates a fault. The TX_FAULT
will be latched high when a laser fault occurs and is
cleared by toggling the TX_DISABLE input or power
cycling the transceiver. The TX_FAULT is not latched for
Low VCC. The transmitter fault condition can also be
monitored via the two-wire serial interface (address A2,
byte 110, bit 2). By default, TX_FAULT is set to trigger on
hardware faults only.
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