VSC7810 Amplifier Datasheet

VSC7810 Datasheet PDF, Equivalent


Part Number

VSC7810

Description

Photodetector/Transimpedance Amplifier

Manufacture

Vitesse Semiconductor Corporation

Total Page 14 Pages
Datasheet
Download VSC7810 Datasheet


VSC7810
VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC7810
Photodetector/Transimpedance Amplifier
Family for Optical Communication
Features
Integrated Photodetector/Transimpedance
Amplifier Optimized for High-Speed Optical
Communications Applications
Integrated AGC
www.DataSheet4U.com Fibre Channel/Gigabit Ethernet Compatible
High Bandwidth
Low Input Noise Equivalent Power
Large Optically Active Area
Single 5V Power Supply
Part Number
VSC7810
Data Rate
Full Speed: 1.25Gb/s
Bandwidth
(MHz)
1200
Input Noise
(µW rms)
0.45
Optically Active Area
(µm diameter)
100
General Description
The VSC7810 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.
VSC7810 Block Diagram
Photodetector/Transimpedance Amplifier
+3.3V
DOUTP
DOUTN
GND
Both DOUTP and DOUTN are back-terminated to 25Ω.
G52145-0, Rev 4.1
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

VSC7810
VITESSE
SEMICONDUCTOR CORPORATION
Photodetector/Transimpedance Amplifier
Family for Optical Communication
Data Sheet
VSC7810
Table 1: Electro-Optical Specifications(1)
Symbol
Parameter
Min Typ(2) Max Units
Conditions
VSS
IDD
www.DataSheet4U.coPmSRR
Supply Voltage
Supply Current
Power Supply Rejection Ratio
4.5 5.0 5.5
V
13 26 40 mA
35 -
-
dB
Frequencies up to 40MHz
(includes external filter).
λ Wavelength
fC Low Frequency Cutoff
BW Optical Modulation Bandwidth
S Sensitivity
700 840 850
nm
- - 1.8 MHz -3dB, P = -15dBm @ 50MHz(4)
800 1200 1300 MHz -3dB, P = -15dBm @ 50MHz(4)
-22 -25 -27 dBm 1.063Gb/s, BER10-12(3)
RO Single-Ended Output Impedance 25 - 60
VD Differential Output Voltage
0.35 0.52 0.65
V
P = -4.5dBm,
RLOAD = 100differential
RD Differential Responsivity
0.8 2.2
-
mV/µW
RLOAD = 100
P = -15dBm @ 50MHz
VDC
VDC
NEPO
VNO
DCD
Output Bias Voltage
Bias Offset Voltage
Input Noise Equivalent Power
Output Noise Voltage
Duty Cycle Distortion
1.2 1.5 2.5
V
- 40 150 mV
0.35 0.45 0.93 µW rms P = 0mW(5)
0.55 0.66 0.75 mV rms P = 0mW(5)
- 1.5 4.5 % P = -4.5dBm
IOUT
PDJ
Output Drive Current
Pattern Dependent Jitter
2.5 -
8 mA
20 40 60
ps
P = -4.5dBm
+/-10% Voltage Window
Optically Active Area
- 100 -
µm Diameter
PPJ PP Jitter
120 160 200
ps P = -5dBm
tR Rise Time
310 355 400
ps 20%-80% P = -4.5dBm
tF Fall Time
280 325 370
ps 20%-80% P = -4.5dBm
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.
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
G52145-0, Rev 4.1
04/05/01


Features VITESSE SEMICONDUCTOR CORPORATION Data Sheet VSC7810 Photodetector/Transimped ance Amplifier Family for Optical Commu nication Features • Integrated Photo detector/Transimpedance Amplifier Optim ized for High-Speed Optical Communicati ons Applications • Integrated AGC www .DataSheet4U.co•m Fibre Channel/Gigab it Ethernet Compatible • High Bandwi dth • Low Input Noise Equivalent Powe r • Large Optically Active Area • S ingle 5V Power Supply Part Number VSC7 810 Data Rate Full Speed: 1.25Gb/s Ba ndwidth (MHz) 1200 Input Noise (µW rm s) 0.45 Optically Active Area (µm dia meter) 100 General Description The VSC 7810 integrated Photodetector/Transimpe dance Amplifier provides a highly integ rated solution for converting light fro m a fiber optic communications channel into a differential output voltage. The benefits of Vitesse Semiconductor’s Gallium Arsenide H-GaAs process are ful ly utilized to provide very high bandwi dth and low noise in a product with a large optically active area for easy alignm.
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