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PDF iT5025 Data sheet ( Hoja de datos )
| Número de pieza | iT5025 | |
| Descripción | 8 Vpp optical modulator driver | |
| Fabricantes | Iterra | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de iT5025 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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iT5025
40-Gb/s, 8-Vpp Optical Modulator Driver
Description
The iT5025 is a broadband GaAs MMIC traveling wave amplifier that delivers high output
power and moderate gain from 30 kHz to 40 GHz. It is well suited for use as a general-
purpose, extremely broadband driver in OC-768 40 Gb/s optical communication systems,
as well as any broadband application requiring flat gain response and excellent port
matches.
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Features
Seven P-HEMT cascode stages provide 8 Vpp output voltage to drive a LiNbO3 external
modulator. The iT5025 incorporates advanced MBE technology, Ti-Pt-Au gate metallization,
silicon nitride passivation, and polyimide for scratch protection. Low-frequency extension
capabilities are also provided.
Frequency range: 30 kHz to 40 GHz
Gain: 10 dB
Gain flatness: ±0.7 dB
Output voltage: 8 Vpp
P1dB at 20 GHz: +21 dBm
Psat at 20 GHz: +23 dBm
Return loss
Input: –12 dB
Output: –10 dB
Low-frequency operation
Available in die form
Absolute
Maximum
Ratings
Symbol
Vdd
Idd
Vg1
Vg2
PDC
Pin
Tch
Tcase
Tmax
Parameters/conditions
Positive drain voltage
Total drain current
First gate voltage
Second gate voltage
DC power dissipation
RF input power
Operating channel temperature
Operating case temperature
Maximum assembly temperature
Min.
Typ.
Max.
9
500
3
Units
V
mA
V
8V
4W
25 dBm
160 ºC
-40 to +95
310
ºC
ºC
www.iterrac.com
This is a Production data sheet. See “Product Status Definitions”
on Web site or in catalog for latest development status.
June 9, 2006 Doc. 4074 Rev 1
1
iTerra Communications
2400 Geng Road, Ste. 100, Palo Alto, CA 94303
Phone (650) 424-1937, Fax (650) 424-1938
1 page  
iT5025
40-Gb/s, 8-Vpp Optical Modulator Driver
Optical Modulator
Driver Application
The iT5025 amplifier has been designed to drive 40 Gb/s LiNbO3 modulators, providing
an output voltage of 8 Vpp. In order to achieve the best eye diagram performance, the
assembly diagram reported in this data sheet must be considered and the following
bias procedure is recommended:
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1.Disable RF during the initial biasing
2.Set Vg1 to –1 V
3.Set Vg2 to 1 V
4. Set Vdd to 7 V
5. Set Vg2 = 3.5 approximately
6. Increase Vg1 in order to bring current close to 200 to 220 mA (this should
correspond to about Vg1= -0.4).
7.Apply RF signal at 2 Vpp, small decreasing of current can be observed.
8. Increase input signal to 3 to 3.5 Vpp with output voltage of 8 Vpp (current
decrease of about 5%)
9. Adjust Vg1 to center eye crossing.
Eye diagram test results reported in this data sheet are at a data rate of 43.5 Gb/s
43.5 Gb/s
Eye Diagram
Probe
Test Set Up
www.iterrac.com
This is a Production data sheet. See “Product Status Definitions”
on Web site or in catalog for latest development status.
June 9, 2006 Doc. 4074 Rev 1
5
iTerra Communications
2400 Geng Road, Ste. 100, Palo Alto, CA 94303
Phone (650) 424-1937, Fax (650) 424-1938
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet iT5025.PDF ] | |
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