VSC7809 Amplifier Datasheet

VSC7809 Datasheet PDF, Equivalent


Part Number

VSC7809

Description

Photodetector/Transimpedance Amplifier

Manufacture

Vitesse Semiconductor Corporation

Total Page 10 Pages
Datasheet
Download VSC7809 Datasheet


VSC7809
VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7809
Photodetector/Transimpedance Amplifier
Family for Optical Communication
Features
Integrated Photodetector/Transimpedance
Amplifier Optimized for High-Speed Optical
Communications Applications
Fibre Channel/Gigabit Ethernet Compatible
www.DataSheet4U.comHigh Bandwidth
Low Input Noise Equivalent Power
Large Optically Active Area
Single 3.3V Power Supply
Part Number
VSC7809
Data Rate
1.25Gb/s
Bandwidth
(MHz)
800
Input Noise
(µW rms)
1.4
Optically Active Area
(µm diameter)
100
General Description
The VSC7809 integrated Photodetector/Transimpedance Amplifier provides a highly integrated solution
for converting light from a fiber optic communications channel into a differential output voltage. The benefits
of Vitesse Semiconductor’s Gallium Arsenide H-GaAs process are fully utilized to provide very high bandwidth
and low noise in a product with a large optically active area for easy alignment. The sensitivity, duty cycle dis-
tortion and jitter meet or exceed all Fibre Channel and Gigabit Ethernet application requirements. Parts are
available in either die form, flat-windowed packages or in ball-lens packages.
By using a metal-semiconductor-metal (MSM) photodetector with a monolithic integrated transimpedance
amplifier, the input capacitance is lowered which allows for a larger optically active area than in discrete photo-
detectors. Integration also allows superior tracking over process, temperature and voltage between the photode-
tector and the amplifier, resulting in higher performance. This part can easily be used in developing Fibre
Channel Electro-Optic Receivers which exhibit very high performance and ease of use.
VSC7809 Block Diagram
Photodetector/Transimpedance Amplifier
+3.3V
DOUTP
DOUTN
GND
Both DOUTP and DOUTN are back-terminated to 25Ω.
G52195-0, Rev 2.4
04/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Page 1

VSC7809
VITESSE
SEMICONDUCTOR CORPORATION
Photodetector/Transimpedance Amplifier
Family for Optical Communication
Advance Product Information
VSC7809
Table 1: Electro-Optical Specifications(1)
Symbol
VSS
IDD
Parameter
Supply Voltage
Supply Current
Min
3.0
14
www.DataSheet4U.coPmSRR
Power Supply Rejection Ratio
-
λ Wavelength
fC Low Frequency Cutoff
700
-
BW Optical Modulation Bandwidth
S Sensitivity
RO Single Ended Output Impedance
VO Differential Output Voltage
800
-20
20
0.2
RD
VDC
VDC
NEPO
VNO
DCD
IOUT
PDJ
----
PPJ
tR
tF
Differential Responsivity
Output Bias Voltage
Bias Offset Voltage
Input Noise Equivalent Power
Output Noise Voltage
Duty Cycle Distortion
Output Drive Current
Pattern Dependent Jitter
Optically Active Area
PP Jitter
Rise Time
Fall Time
0.8
1.0
-
-
-
-
2.0
-
-
-
-
-
Notes: (1) Specified over 0°C (ambient) to 70°C (case).
(2) Typical conditions 25°C and 3.3V power supply.
(3) See Note 1 in Application Note 48.
(4) P = Incident Optical Power
(5) See Note 2 In Application Note 48.
Typ(2)
3.3
23
-10
840
1.8
1100
-21
25
0.26
1.2
-
-
1
1.0
-
2.6
35
100
190
-
-
Max
3.6
40
-
850
2.5
-
30
0.4
-
-
200
1.4
1.25
4.5
-
60
-
250
400
400
Units
V
mA
dB
nm
MHz
MHz
dBm
V
mV/µW
V
mV
µW rms
mV rms
%
mA
ps
µm
ps
ps
ps
Conditions
Frequencies up to 40MHz
Use external filter to get
PSRR of -35dB(3).
-3db, P(4) = -15dBm @
50MHz
-3db,
P = -15dBm @ 50MHz
1.25Gb/s, BER10-12(5)
P = -5dBm,
RLOAD = 100differential
RLOAD = 100
P = -15dBm @ 50MHz
P = 0mW
P = 0mW
P = -5dBm
P = -5dBm
P = -5dBm
+/-10% Voltage Window
Diameter
P = -5 dBm
20%-80% P = -5dBm
20%-80% P = -5dBm
Page 2
© VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano Camarillo, CA 93012
Tel: (800) VITESSE FAX: (805) 987-5896 Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52195-0, Rev 2.4
04/05/01


Features VITESSE SEMICONDUCTOR CORPORATION Advan ce Product Information VSC7809 Photode tector/Transimpedance Amplifier Family for Optical Communication Features • Integrated Photodetector/Transimpedanc e Amplifier Optimized for High-Speed Op tical Communications Applications • F ibre Channel/Gigabit Ethernet Compatibl e www.DataSheet4U.co•mHigh Bandwidth • Low Input Noise Equivalent Power Large Optically Active Area • Sing le 3.3V Power Supply Part Number VSC78 09 Data Rate 1.25Gb/s Bandwidth (MHz) 800 Input Noise (µW rms) 1.4 Optica lly Active Area (µm diameter) 100 Gen eral Description The VSC7809 integrated Photodetector/Transimpedance Amplifier provides a highly integrated solution for converting light from a fiber optic communications channel into a differen tial output voltage. The benefits of Vi tesse Semiconductor’s Gallium Arsenid e H-GaAs process are fully utilized to provide very high bandwidth and low noi se in a product with a large optically active area for easy alignment. The sens.
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