HMC881LP5E Datasheet, PDF (1/6 Pages) Hittite Microwave Corporation – FILTER - TUNABLE, LOW PASS SMT 2.2 - 4.0 GHz

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Typical Applications
The HMC881LP5E is ideal for:
• Test & Measurement Equipment
• Military RADAR & EW/ECM
• SATCOM & Space
• Industrial & Medical Equipment
Functional Diagram
HMC881LP5E
FILTER - TUNABLE, LOW PASS SMT
2.2 - 4.0 GHz
Features
Fast Tuning Response; 150 ns
Excellent Wideband Rejection; 40 dB
Single Positive Frequency Control: 0 to +14V
Low Insertion Loss &
User Selectable Cutoff Frequency
Single Chip Replacement
for Mechanically Tuned Designs
32 Lead 5x5 mm SMT Package
General Description
The HMC881LP5E is a MMIC low pass filter which
features a user selectable cutoff frequency. The
cutoff frequency can be varied from 2.2 to 4.0 GHz
by applying a single analog tuning voltage between
0 and 14V. This low pass filter provides a low 3.8 dB
insertion loss, 10 dB return loss and 1.25 x ƒcutoff
stopband attenuation of >20 dB. This tunable filter
can be used as a much smaller alternative to physi-
cally large switched filter banks and cavity tuned fil-
ters. The HMC881LP5E has excellent microphonics
due to the monolithic design, and provides a dynami-
cally adjustable solution in advanced communications
applications. The low pass tunable filter is packaged
in a RoHS compliant 5x5mm QFN leadless package.
3-1
Electrical Specifications, T_A = +25°C
Parameter
Min.
Typ.
Max.
Passband
ƒcutoff ^[1] Tuning Range
0
4
2.2
4
Stopband Frequency (Rejection >20 dB)
1.25 x ƒcutoff
Re-entry Frequency (Rejection <30 dB)
30
Insertion Loss
3.8
Return Loss
10
Maximum Input Power for Linear Operation
10
Frequency Control Voltage (Vfctl)
0
14
Frequency Control Port Source/Sink Current (I_fctl)
Residual Phase Noise ^[2] (1 MHz offset)
±1
-165
ƒcutoff Drift Rate (Fixed Vfctl)
-0.8
Tuning Characteristics ^[3]
tFULLBAND (0% Vfctl to 90% RF)
150
[1] ƒcutoff defined as the point at which the insertion loss is 3 dB below the minimum passband insertion loss.
[2] Optimum residual phase noise performance requires the use of a low noise driver circuit.
[3]Tuning speed is dependent on driver circuit. Data measured with a high speed op-amp driver and includes driver slew rate delay.
Units
GHz
GHz
GHz
GHz
dB
dB
dBm
V
mA
dBc/Hz
MHz/°C
ns
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]