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參數資料
| 型號： | SE1020W |
| 廠商： | SiGe Semiconductor, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | 1.25 Gb/s Transimpedance Amplifier Product Preview |
| 中文描述： | 1.25 Gb / s的阻放大器產品預覽 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 272K |
| 代理商： | SE1020W |
SE1020W
1.25 Gb/s Transimpedance Amplifier
Product Preview
Applications
Gigabit-Ethernet systems, test equipment
and modules
OC-24 fibre optic modules and line
termination
Fibre Channel optical systems
Features
Single +3.3 V power supply
Power dissipation = 110 mW (typ)
Input noise current = 180 nA rms when used
with a 0.7 pF detector
Transimpedance gain = 4.0 k
into a 50
load (differential)
On-chip automatic gain control gives input
current overload of 2.6 mA pk and max
output voltage swing of 300 mV pk-pk
Differential 50
outputs
Bandwidth (-3 dB) = 1.2 GHz
Wide data rate range = 50 Mb/s to 1.25 Gb/s
Constant photodiode reverse bias voltage =
1.5 V (anode to input, cathode to VCC)
Minimal external components, supply
decoupling only
Operating junction temperature range =
-40
°
C to +125
°
C
Ordering Information
Type
SE1020W
Package
Bare Die
Remark
None
Functional Block Diagram
Product Description
SiGe Semiconductor offers a portfolio of optical
networking ICs for use in high-performance
optical transmitter and receiver functions, from
155 Mb/s up to 12.5 Gb/s.
SiGe Semiconductor’s SE1020W is a fully
integrated,
silicon
bipolar
amplifier;
providing
wideband,
preamplification
of
signal
photodetector. It features differential outputs and
incorporates
an
automatic
mechanism to increase dynamic range, allowing
input signals up to 2.6 mA peak. A decoupling
capacitor on the supply is the only external
circuitry required. A system block diagram is
shown after the functional description, on page 3.
transimpedance
low
current
noise
from
a
gain
control
VCC or +ve supply
SE1020
TzAmp
1.25 Gb/s
Tz Amp
Output
Driver
Bandgap
Reference
Integrator
Rectifier
Automatic Gain Control
TZ_IN
Input
Current
OUTP
OUTN
50
50
R
f
42-DST-01
Rev 1.3
May 27/02
Confidential
1 of 7
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