DATA SHEET| AUGUST 2, 2006
For more information on this and other products:
Contact Sales at Ortel 626-293-3 400, or visit www.emcore.com.
1527
Applications
Forward-path and return -path
broadband video transport
FTTx receivers
EDFA and net work monitors
Features
Low cost package
Low capacitance, < 0.4 pF
Low dark current, < 50 nA at
+85°C
1 GHz flat response, + 0.5 dB
Extended bandwidth option
High responsivity
- > 0.85 mA/mW at 1310 nm
- > 0.95 mA/mW at 1550 nm
Telcordia GR-468 compliant
RoHS compliant
2651A/2651E Broadband Photodiode
The 2651 provides the proven high performance of Ortel’s photodiode
technology in a very practical, cost-effective package. The 2651A
features high linearity and low capacitance over a 1 GHz bandwidth. The
extended bandwidth 2651E offers high linearity and low capacitance up
to 3 GHz. These broadband photodiodes are housed in a small,
environmentally rugged coaxial package.
The 2651 broadband photodetector is designed to provide the
performance and flexibility needed to meet the expanding applications of
two-way communications networks. This photodiode is used today in
forward-and return-path applications, including AM-VSB CATV, QAM
64/256, PON, FTTC and FTTH receivers.
The 2651A and 2651E photodiodes are compliant with all criteria of the
Restriction of the Use of Hazardous Substances in Electrical and
Electronic Equipment (RoHS) guidelines 2002/95/EC.
Performance Highlights
Min Typ Max Units
Operating Case Temperature -40 25 +85 °C
Wavelength 1100 - 1600 nm
Responsivity, 1310 nm
1550 nm
0.85
0.95
-
-
-
-
A/W
Dark Current, 25°C
85°C
-
-
-
-
5
50
nA
Capacitance - 0.35 0.4 pF
Bandwidth, 2651A
2651E
-
-
-
-
1000
3000
MHz
Gain Flatness, < 1 GHz - - 1.0 dBp-p
Gain Up-Tilt, 2651E, 1 GHz to 3 GHz 2 - 4 dB
DSO, 2651A/E, < 1 GHz
2651E, 1 GHz – 3 GHz
-
-
-
-
-75
-65
dBc
DTB, 2651A/E, < 1 GHz
2651E, 1 GHz – 3 GHz
-
-
-
-
-85
-75
dBc
Bias Voltage 10 12 15 V
See following pages for complete specifications and operating conditions.
2
DATA SHEET| AUGUST 2, 2006
ORTEL, A division of EMCORE
Model 2651A/2651E Broadband Photodiode
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 Temperature Range Top -40 85 °C
Storage Temperature Range Tstg -40 85 °C
Input Power Saturation PIN - 10 mW
Reverse Voltage VR - 30 V
Forward Current IF - 10 mA
DC/Optical Characteristics
Parameter Condition Min Typ Max Unit
Wavelength - 1100 - 1600 nm
Responsivity 1310 nm
1550 nm 0.85
0.95 -
- -
- A/W
Dark Current 25°C
85°C -
- -
- 5
50 nA
Capacitance - - 0.35 0.4 pF
Optical Return Loss - - -40 dB
Bias Voltage - 10 12 15 V
Fiber Buffer - - 900 - μm
Fiber Core / Cladding - - 9/125 - μm
RF Characteristics
Parameter Condition Min Typ Max Unit
Frequency Range1 2651A
2651E -
- -
- 1000
3000 MHz
Frequency Respons e1 2651A/E, peak-to-valley, < 1 GHz - - 1 dB
Frequency Respons e1 2651E up-tilt gain2 2 - 4 dB
DSO1,3 2651A/E, 1310 nm, two tone test
2651E, 1310 nm, two tone test4 -
- -
- -75
-65 dBc
DTB1,3 2651A/E, 1310 nm, two tone test
2651E, 1310 nm, two tone test4 -
- -
- -85
-75 dBc
1. Characterized with resistive load of 75Ω.
2. 1 GHz to 3 GHz.
3. Each test laser has 40% OMI. Distortion products are measured at 81, 449, 600, 850. Optical Pin = 0 dBm. Vpd = 12V.
4. Additional test frequencies of 1500, 2000, and 2500 MHz.
3
DATA SHEET| AUGUST 2, 2006
ORTEL, A division of EMCORE
Model 2651A/2651E Broadband Photodiode
Outline Drawing
Dimensions are in mm.
Pinout
Pin Description
1 Anode
2 Cathode
3 Ground
Block Diagram
.
.
.
Anode
Cathode
Ground
.
.
.
Anode
Cathode
Ground
4
DATA SHEET| AUGUST 2, 2006
ORTEL, A division of EMCORE
Model 2651A/2651E Broadband Photodiode
Fiber Length
Mounting Bracket
Dimensions are in mm .
115 + 15 cm
60 + 2 cm
Conn
115 + 15 cm
60 + 2 cm
Conn
With Bracket Without BracketWith Bracket Without Bracket
5
DATA SHEET| AUGUST 2, 2006
ORTEL, A division of EMCORE
Model 2651A/2651E Broadband Photodiode
Ordering Information – Model Number Options
2651A-045-115-N
Information contained herein is deemed to be reliable and accurate as of issue date. EMCORE reserves the right to change the design or specifications of
the product at any time without notice. Ortel, the Ortel logo, EMCORE, and the EMCORE logo are tra demarks of EMCORE Corporation.
ZZds.2651 © Copyright 2003. EMCORE Corporation
Ortel, a division of EMCORE
2015 West Chestnut Street
A
lhambra, California 91803-15 42
Tel: 626-293-3400
Fax: 626-293-3428
www.emcore.com
Model version
2651A
2651E
Optical connector
FC/APC, 020
FC/UPC, 023
SC/APC, 045
SC/UPC, 040
Fiber length
60 cm, 060
115 cm, 115
Mounting bracket
Yes, B
No, N
