ACS411CS View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS411CS' PDF : 43 Pages View PDF
Mode 1 - Laser & PIN without integrated TIA
In mode 1, the device is configured for use with a
Laser and a PIN Diode without a TIA. In this
configuration it is important to employ the TIA
available within the ACS9020. The ACS9020 TIA is
activated by setting PINRX = High.
In this configuration, the PIN Diode should be
connected to the PINP/PINN pins so that the TIA/
Post-Amp combination on the ACS9020 is used.
In this configuration, the PIN Diode should be
connected to the PINP/PINN pins so that the TIA/
Post-Amp combination on the ACS9020 is used.
LED
LAP
Fiber
LAN
PIN Diode
LAP
PMN
LAN
Laser
Fiber
PIN Diode
PINP
PINN
Fiber
Mode 3: LED and PIN.
PINP
PINN
Fiber
Mode 1: 3-pin Laser and PIN.
Mode 4 - LED & PIN with a TIA.
In mode 4, the device is configured for use with an
LED and PIN Diode with an integrated TIA (Pin
Receiver). In this mode it is important to bypass the
TIA on the ACS9020 device.The VP/VN inputs are
activated by setting PINRX = Low.
Mode 2 - Laser and & PIN Receiver with a TIA.
In mode 2, the device is configured for use with a
Laser and PIN Diode with an integrated TIA (Pin
Receiver). In this mode it is important to bypass the
TIA on the ACS9020 device.The VP/VN inputs are
activated by setting PINRX = Low.
In this mode, the outputs from the PIN Receiver
should be connected to the VP/VN inputs of the
ACS9020 Post-Amp via AC coupling capacitors as
shown in the diagram below.
Laser
LAP
LAP
PMN
LAN
100PF
VP
VN
100PF
PIN Diode
+
-
Fiber
Fiber
Mode 2: 4-pin Laser and PIN with integrated TIA.
In this mode, the outputs from the PIN Receiver
should be connected directly to the VP/VN inputs of
the ACS9020 Post-Amp via AC coupling capacitors
as shown in the diagram below.
LED
LAP
LAN
100PF
VP
VN
100PF
PIN Diode
+
-
Fiber
Fiber
Mode 4: LED and PIN with internal TIA.
Mode 5 - WDM Bidirectional Device
The device can be configured for use with a WDM
device (with and without a TIA) to realise a single
fiber link. The electrical connections are the same
as those for mode1 and mode2 dependent on
whether the WDM bidirectional device has a TIA
included or not.
Mode 3- LED & PIN without integrated TIA
In mode 3, the device is configured for use with a
LED and a PIN Diode without a TIA. In this
configuration it is important to employ the TIA
available within the ACS9020. The ACS9020 TIA is
activated by setting PINRX = High.
If the device has a TIA integrated then the receivers
Positive/Negative differential outputs are connected
to VP/VN respectively via AC coupling capacitors
with PINRX set Low.
3
ACS411CS PRE-RELEASE Issue 6.0 July 1999.
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