Data Sheet
August 2000
2606B Return-Path Photodiode Receiver Module
Description
The 2606B CATV return-path photodiode module is a
critical component for the delivery of high-perfor-
mance interactive services for today's two-way fiber-
optic networks. These modules utilize PIN InGaAs
photodiodes in robust 14-pin DIL packages that
exhibit excellent sensitivity, low noise, and excep-
tional linearity in return-path optical links. The mod-
ule incorporates a patented impedance-matching
circuit, which optimizes very low noise gain in optical
broadband receivers.
Pin Information
Features
s
s
s
s
s
Table 1. Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
2606A/B
Ground
Ground
Ground
Ground
Ground
Open
Open
RF Out
Ground
Bias
Ground
Open
Ground
5 MHz—200 MHz frequency range
Flat response to ± 0.5 dB
High optical responsivity
Ultra low optical return loss
75
Ω
impedance-matched
Applications
s
Return-path CATV receivers
2606B Return-Path Photodiode Receiver Module
Data Sheet
August 2000
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute 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
Operating Temperature Range
Storage Temperature Range
Optical Input Power
Symbol
T
OP
Tstg
P
IN
Min
–40
–40
—
Max
85
85
2
(for continuous
operation)
20
Unit
°C
°C
mW
dc Bias Voltage
V
PD
—
V
Characteristics
Table 2. Electrical/Optical Characteristics
Parameter
Optical Return Loss
Optical Wavelength Range
Responsivity
Bias Voltage
Table 3. RF Characteristics
Parameter
Frequency Range
Gain
1
Flatness
2
Second-Order Distortion
3
Third-Order Distortion
Symbol
F
G
—
CSO
CTB
Min
5
—
—
—
—
Typ
—
8
±0.5
–65
–75
Max
200
—
—
—
—
Unit
MHz
dB
dB
dBc
dBc
Symbol
RL
λ
—
—
Min
45
—
—
—
—
Typ
—
1310 ± 10
>0.85 at 1310 nm,
>0.95 at 1550 nm
15 (nominal)
Max
—
—
—
—
—
Unit
dB
nm
mA/mW
mA/mW
V
1. Current gain of internal transformer.
2. Measured into 75
Ω
load.
3. Two laser test. Each laser has 40% modulation index. Total received optical power is 0 dBm.
2
Agere Systems Inc.
Data Sheet
August 2000
2606B Return-Path Photodiode Receiver Module
Characteristics Curves
14
RECEIVER NOISE (pA/Hz
1/2
)
12
10
8
6
4
2
0
0
1
2
3
4
5
6
7
8
MATCHING GAIN (dB)
9
10
11
12
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
KEY
NF = 0 dB
X X NF = 6 dB
X
X
NF = 2 dB
NF = 8 dB
NF = 4 dB
NF = 10 dB
1-1182 (F)
Figure 1. Receiver Noise
1.0
RELATIVE RESPONSE (dB)
SPEC LIMIT
0.5
0
-0.5
-1.0
-2.0
0
5
FREQUENCY (MHz)
1-1184(F)
SPEC LIMIT
200
Figure 2. Frequency Response
Agere Systems Inc.
3
2606B Return-Path Photodiode Receiver Module
Data Sheet
August 2000
Outline Diagram
Dimensions are in inches and (millimeters).
0.230
(5.842)
PIN 14
0.118
(2.997)
0.800
(20.32)
0.500
(12.7) 0.300
(7.62)
PIN 1
.100 TYP
0.600
(15.24)
0.018
(0.457)
0.196
(4.978)
1-1183(F)
Ordering Information
Table 4. Ordering Information*
Device Code
2606B
Description
Return-Path Photodiode Receiver Module
Connector
None
Pigtail
Single mode,
9
µm/125 µm;
2 m—3 m
Comcode
108867300
* Other options available. For additional ordering information, please contact an account manager at OPTO West, Agere Systems Inc., 1-800-
362-3891 (for sales staff, please press option 2).
For additional information, contact your Agere Systems Account Manager or the following:
http://www.agere.com
INTERNET:
docmaster@micro.lucent.com
E-MAIL:
N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286
1-800-372-2447,
FAX 610-712-4106 (In CANADA:
1-800-553-2448,
FAX 610-712-4106)
ASIA PACIFIC: Agere Systems Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256
Tel. (65) 778 8833,
FAX (65) 777 7495
CHINA:
Agere Systems (Shanghai) Co., Ltd., 33/F Jin Mao Tower, 88 Century Boulevard Pudong, Shanghai 200121 PRC
Tel. (86) 21 50471212,
FAX (86) 21 50472266
JAPAN:
Agere Systems Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan
Tel. (81) 3 5421 1600,
FAX (81) 3 5421 1700
EUROPE:
Data Requests: DATALINE:
Tel. (44) 7000 582 368,
FAX (44) 1189 328 148
Technical Inquiries: OPTOELECTRONICS MARKETING:
(44) 1344 865 900
(Ascot UK)
Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.
Copyright © 2001 Agere Systems Inc.
All Rights Reserved
August 2000
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