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iT2025J Schematic ( PDF Datasheet ) - gigoptix

Teilenummer iT2025J
Beschreibung Power Amplifier
Hersteller gigoptix
Logo gigoptix Logo 




Gesamt 8 Seiten
iT2025J Datasheet, Funktion
iT2025J
30 kHz to 18 GHz High-Gain Power Amplifier
Description
Features
www.DataSheet4U.com
The iT2025J is a RoHS-6-compliant packaged broadband GaAs MMIC traveling wave
amplifier designed for medium output power applications where low-frequency extension
capabilities are also required. The iT2025J provides saturated output power greater than
25 dBm up to 8 GHz, greater than 23 dBm up to 16 GHz, and greater than 20 dBm at 18
GHz. Average gain is greater than 25 dB. DC power consumption as low as 2.4 W.
Input/output ports are DC coupled.
¾ Frequency range: 2 GHz – 18 GHz with
low-frequency extension capability down to 30 KHz
¾ >25 dBm nominal Psat (30 kHz – 8 GHz)
¾ >20 dBm nominal Psat (30 kHz – 18 GHz)
¾ >25 dB nominal gain up to 18 GHz
¾ 2.4 W DC power consumption
¾ Nominal DC bias conditions: 8 V at 300 mA
¾ Full chip passivation for high reliability
¾ RoHS-6-compliant small-form-factor
(0.450 x 0.350 x 0.078 in.) SMD package
Device Diagram
Both gain stages and
their respective RF and
DC connections are
shown at right. The
internal coupling
capacitor value
between the cascaded
gain stages is 0.1 µF.
VD1 and VD2 are
applied to the gain IN
stages through on-chip
resistors.
VCTRL1 VD1
Gain
VCTRL2 VD2
Gain
OUT
VG1
VG2
Recommended bias conditions:
VD1 = 8 V, VG1 = -0.8 V to – 0.9 V, VCTRL1 = 0 V, ID1 = 80 mA
VD2T = 8 V, VG2 = -0.5 V to -0.7 V, VCTRL2 = +3.5 V, ID2T = 220 mA
For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937,
e-mail: [email protected], or visit our site at www.GigOptix.com.
1






iT2025J Datasheet, Funktion
iT2025J
30 kHz to 18 GHz High-Gain Power Amplifier
Circuit Design
for low-Frequency
Extension
Applications
to 30 kHz*
www.DataSheet4U.com
VDD
Stage 1
amplitude
control
Stage 2
amplitude
control
L2
R2 C8
C4 C5
L1 R1
C3
VD2
VCTRL1
VD1 VCTRL2
VD2T
C1
VIN
Gain
C2
Gain VOUT
C6 VG1
C7 VG2
Stage 1
gate voltage
Stage 2
gate voltage
Reference
Designation
C1, C2
C3 – C8
R1, R2
L1
L2
Description
0.10 µF cap, 0402, X5R, 10 V
1.00 µF cap, 0603, X5R, 16 V
180 ohm resistor, 0402, 5%
0.33 µH inductor
100 µH inductor
Manufacturer
Panasonic
Panasonic
Panasonic
Toko America
Coilcraft
Part Number
ECJ-0EB1A104K
ECJ-1VB1C105K
ERJ-2GEJ181X
FSLU2520-R33K
DO1608-104MLB
This application circuit is used on the iT2025J evaluation board, which is available to
customers who desire a convenient test platform for this product. The iT2025J design was
verified with the components and configuration described above. Note that VD2 is not used
in this configuration. C1 and C2 are coupling capacitors for the RF input and output. High-
performance capacitors (such as those manufactured by Presidio) may be substituted.
C3 to C8 are power supply decoupling capacitors. L1, L2, R1, and R2 are the required
external components for the choke network that supplies the output stage bias current for
applications down to 30 kHz. These components can be replaced with different values if the
low-frequency cutoff is higher than 30 kHz.
(*) For applications in which the minimum frequency is 2 GHz, L1, L2, R1, and R2 can be
removed and only C8 is required.
For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937,
e-mail: [email protected], or visit our site at www.GigOptix.com.
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