AGERE 2609C Datasheet
2609C Broadband Photodiode Module
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Description
The 2609C is a packaged impedance-matched photodiode module with internal
optical broadband receivers in fiber-optic networks.
The patented impedance-match technolo
improved
nal circuits due to control of parasitics between the
photodiode and the impedance-matchin
Data Sheet
August 2000
ain designed for use in
results in
ain-bandwidth product compared to exter-
circuit.
Features
■
1 GHz flat response, ±0.5 dB
■
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
Applications
■
Extended bandwidth, broadband CATV receivers
Pin Information
Table 1. Pin Descriptions
Pin No. Description
1 Ground
2 Ground
3 Ground
4 Ground
5 Ground
6 Ground
7Open
8Open
9RF Out
10 Ground
11 Bias
12 Ground
13 Open
14 Ground
Data Sheet
2609C Broadband Photodiode Module August 2000
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter Symbol Min Max Unit
Operating Case Temperature Range T
C
Storage Temperature Range Tstg –40 85 °C
Optical Input Power P
dc Bias Voltage V
Forward Current I
IN
PD
F
–40 85 °C
—2mW
—25V
—10mA
Characteristics
.
Table 2. Electrical/Optical Characteristics
Parameter Symbol Min Typ Max Unit
Optical Wavelength Range λ 1310—1550 ± 20 — nm
Responsivity — —
—
Optical Return Loss
1
RL — >45 — dB
>0.85 at 1310 nm,
>0.95 at 1550 nm
—
—
mA/mW
mA/mW
Bias Voltage — — 15 (nominal) — V
Dark Current I
1. Without connector
D
— 200 at 20 °C—nA
Table 3. RF Characteristics
Parameter Symbol Min Typ Max Unit
Frequency Range F 40 — 1000 MHz
Gain
1
G—>5—dB
Frequency Response — — <± 0.5 — dB
Receiver Noise — See Figure 1.
2
Distortion Products
Second Order
Third Order
1. Current gain of internal transformer circuit.
2. Two laser test. Each laser has 40% modulation index. Total received optical power is 0 dBm. Distortion products measured at 80 MHz,
450 MHz, 600 MHz, 850 MHz, and 1000 MHz.
:
CSO
CTB
—
—
<–70
<–80
—
—
dBc
dBc
2
Agere Systems Inc.
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