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PDF iT5082 Data sheet ( Hoja de datos )
| Número de pieza | iT5082 | |
| Descripción | modulator driver amplifier | |
| Fabricantes | Iterra | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de iT5082 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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iT5082
12.5 Gb/s Modulator Driver Amplifier
Description
www.DataSheet4U.com
The iT5082 is general-purpose modulator driver designed for NRZ communication
systems operating up to 12.5 Gb/s. The driver is typically used to amplify a data signal
between a MUX and an optical modulator. With its wide output amplitude adjustment
range, the iT5082 is capable of driving Electro Absorption (EA), semiconductor Mach-
Zehnder, and LiNbO3 modulators. Additional features include eye cross point
adjustability, internal power sequencing circuitry and filtering, a bias port to apply a DC
level to the output port, and the ability to apply a dither tone to amplitude-modulate the
output data. This feature is critical for traditional modulator bias control loops.
The differential limiting amplifier at the front end provides the user with a means to
adjust the cross point of the output eye waveform. It also provides the subsequent gain
stages with a constant amplitude signal, making the amplified output signal less
sensitive to variations at the iT5082 input. Fabricated using GaAs pHEMT devices and
thin-film passive components, the iT5082 exhibits excellent performance and
reliability. The iT5082 is available in an SMA connectorized module. The primary heat
conduction path is through the base of the module, so proper thermal management is
required. Operating case temperature range is 0°C to 70°C.
Features
Optimized for NRZ bit rates up to 12.5 Gb/s
Non-inverting polarity
Input sensitivity: 100 mV
Adjustable output amplitude from 1.5 V to 7.0 V
Amplitude modulation of output signal
Adjustable eye crossing from 30% to 70%
Low RMS jitter degradation
2.7 W typical power dissipation at 7.0 V output
AC-coupled RF inputs and outputs
Functional
Block Diagram
NRZ Data
In
Limiting
Diff-Amp
Gain
Gain
Supply Sequencing, Bias Control
Amplitude Control
NRZ Data
Out
Cross Point Adj (CP) Amplitude Adj (GC)
+V
-V Bias (VB)
www.iterrac.com
This is a Production data sheet. See “Product Status Definitions” on
Web site or catalog for product development status.
April 24, 2007 Doc. 4077 Rev 1.0
1
iTerra Communications
2400 Geng Road, Ste. 100, Palo Alto, CA 94303
Phone (650) 424-1937, Fax (650) 424-1938
1 page  
iT5082
12.5 Gb/s Modulator Driver Amplifier
Typical
Measured
Performance
(cont.)
Test conditions
www.DataSheet4+UV.c=om8.0 V
-V = -5.0 V
TCASE ≈ 30°C
FB = 12.5 Gb/s.
All time-domain data
collected using
DCA86100A
sampling scope with
50 GHz electrical
module and precision
time base module.
Output amplitude ≈ 1.5 V
Eye cross point ≈ 70%
315
iT5082 - Current Consumption vs Output Amplitude
290 +V = 8.0V, -V = -5.0V
265 +V Supply
-V Supply
240
215
190
165
140
115
90
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
Output Amplitude (V)
Output amplitude ≈ 1.5 V
Eye cross point ≈ 30%
7.5
7.0 iT5082 - Output Amplitude vs Vgc setting
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
Note: Performance at amplitude settings
2.0 outside the specified 1.5V to 7.0V range
1.5 is not implied or guaranteed.
1.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VGC (V)
30
iT5082 - Transition Time vs Output Amplitude
20% -- 80%, Input Amplitude = 400mV
25
20
15
Rise Time
Fall Time
10
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
Output Amplitude (V)
2.5
iT5082 - Added RMS Jitter vs Output Amplitude
2.3 Measured Input Jitter = 0.9ps, Eye Cross Point = 50%
2.1
1.9
1.7
1.5
1.3
1.1
0.9
0.7 Input amplitude = 400mV
Input amplitude = 800mV
0.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0
Output Amplitude (V)
www.iterrac.com
This is a Production data sheet. See “Product Status Definitions” on
Web site or catalog for product development status.
April 24, 2007 Doc. 4077 Rev 1.0
5
iTerra Communications
2400 Geng Road, Ste. 100, Palo Alto, CA 94303
Phone (650) 424-1937, Fax (650) 424-1938
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet iT5082.PDF ] | |
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