AGERE 2650B, 2650A Datasheet

2650A/B Broadband Photodiode

Features

Data Sheet, Rev. 1

April 2001

Description

The 2650A/B provides the proven high performance
of our photodiode technology in a very practical,
cost-effective package. The 2650-series features
high linearity and low capacitance over a
1 GHz bandwidth. These broadband photodiodes are
housed in a small, environmentally rugged coaxial
package.

The 2650A/B 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 AM­VSB CATV, QAM 64/256, PON, FTTC, and FTTH
receivers.

■

Low capacitance, ≤0.6 pF

■

1 GHz flat response, ±0.5 dB

■

High responsivity:
— ≥0.85 at 1310 nm
— ≥0.95 at 1550 nm

Applications

■

Forward-path and return-path broadband video
transport

■

EDFA/network mon ito rs

Data Sheet, Rev.1

2650A/B Broadband Photodiode April 2001

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 T

OP

Storage Temperature Range Tstg –40 85 °C
Input Power Saturation P
Reverse Voltage V
Forward Current I
Power Dissipation P

IN

R

F

DISS

–40 85 °C

—10mW
—30V
—10mA
—<100mW

Characteristics

Table 1. Electrical/Optical Characteristics

Parameter Symbol Min Typ Max Unit

Optical Wavelength Range λ 1100 — 1600 nm
Responsivity — —

—

>0.85 at 1310 nm,

>0.95 at 1550 nm

—
—

mA/mW

mA/mW
Frequency Range F 1 — 1000 MHz
Frequency Response — — ±0.5 — dB
Distortion Products:

Composite Second Order
Composite Triple Beat

1

CSO

CTB

—
—

≤–75
≤–85

—
—

dBc

dBc
Back Reflection RL — ≤–40 — dB
Dark Current I

D

— ≤5 at 25 °C—nA
Capacitance — — ≤0.6 — pF
Bandwidth BW — 1.0 — GHz

1. Two laser test at 1310 nm. Each laser has 40% modulation index. Total received power is 0 dBm. Distortion products measured at 80 MHz,
450 MHz, 600 MHz, 850 MHz, and 1000 MHz.

2

Agere Systems Inc.