ONET8521T Datasheet, PDF (13/16 Pages) Texas Instruments – 11.3 Gbps Limiting Transimpedance Amplifier With RSSI

ONET8521T
www.ti.com
SLLSE87A – JULY 2011 – REVISED AUGUST 2011
TO46 LAYOUT EXAMPLE
An example for a layout using an external bias voltage for the photodiode in a 5 pin TO46 can is shown in
Figure 17. Figure 18 shows an example with a backside cathode contact photodiode using the internal bias
voltage.
OUT+
Capacitor
OUT–
Capacitor or
ceramic
substrate
VCC
Capacitor
VAPD
Figure 17. TO46 5 Pin Layout Using the ONET8521T with an Avalanche Photodiode
OUT+
OUT–
Capacitor
VCC
Backside
Cathode
Capacitor or
ceramic
substrate
RSSI
Figure 18. TO46 5 Pin Layout Using the Internal Bias Voltage for a Backside Cathode Contact
Photodiode
Copyright © 2011, Texas Instruments Incorporated
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