Data Sheet
August 2000
2609B Broadband Photodiode Module
Description
The 2609B is a packaged impedance-matched pho-
todiode module with internal gain designed for use in
optical broadband receivers in fiber-optic networks.
The patented impedance-match technology results in
improved gain-bandwidth product compared to exter-
nal circuits due to better control of parasitics between
the photodiode and the impedance-matching circuit.
Pin Information
Table 1. Pin Descriptions
Pin No.
Description
Ground
Ground
Ground
Ground
Ground
Ground
Open
Open
RF Out
Ground
Bias
Ground
Open
Ground
Features
s
s
s
Flat response to ±0.5 dB
Frequency response up to 860 MHz
High responsivity:
—>0.85 A/W at 1310 nm
—0.95 A/W at 1550 nm
Internal current gain, 6 dB (typ.)
75
Ω
impedance-matched
s
s
Applications
s
Broadband CATV receivers
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AGERE [ AGERE SYSTEMS ]
