HMC900LP5E Datasheet, PDF (1/26 Pages) Hittite Microwave Corporation – 50 MHz DUAL PROGRAMMABLE LOW PASS FILTER with DRIVER

v04.0811
HMC900LP5E
50 MHz DUAL PROGRAMMABLE
LOW PASS FILTER with DRIVER
Typical Applications
Features
The HMC900LP5E is ideal for various modulation
Low Noise Figure: 12 dB
systems:
High linearity: Output IP3 +30 dBm
• Baseband filtering before A/D or after D/A converters
for point-to-point fixed wireless or base station
transceivers (GSM/GPRS, WCDMA & TD-SCDMA)
Pre-programmed and/or Programmable Bandwidth:
3.5 MHz to 50 MHz. (Please see “HMC900LP5E
Ordering Information”)
• Integrated direct conversion receiver (DCR) when
mated with mixer and VGA
• Software defined radio applications
• Anti-aliasing and reconstruction filters
• Test and measurement equipment
Integrated ADC Driver Amplifier
Exceptional 3 dB Bandwidth Accuracy: ±2.5%
6^th order Butterworth Magnitude & Phase Response
Automatic Filter Calibration
Externally Controlled Common Mode Output Level
3
Simplifies Interface
Filter Bypass Option: 100 MHz Bandwidth
Read/Write Serial Port Interface (SPI)
32 Lead 5x5 mm SMT Package 25 mm²
Functional Diagram
General Description
The HMC900LP5E is a 6th order, programmable
bandwidth, fully calibrated, dual low pass filter. It
features 0 or 10 dB input gain setting and supports
arbitrary bandwidths from 3.5 MHz to 50 MHz,
and when calibrated, is accurate to +/-2.5% of the
desired bandwidth. It includes a 100 MHz bandwidth
filter bypass option while retaining gain setting and
common mode control.
Housed in a compact 5x5 mm SMT QFN package,
the HMC900LP5E requires minimal exter-
nal components and provides a low cost alternative to
more complicated switched discrete filter architectures.
The integrated ADC driver and externally controlled
common mode output level further simplify system
implementations.
Filter calibration for the HMC900LP5E is accomp-
lished with any reference clock rate from 20 to 80
MHz. One time programmable (OTP) memory offers
unsurpassed flexibility allowing the user “set and
forget” parameters like gain and bandwidth setting.
Matched filter paths provide excellent quadrature
balance, making the HMC900LP5E ideal for I/Q
communications applications.
The 6th order Butterworth transfer function delivers
superior stop band rejection while maintaining both a
flat passband and minimal group delay variation.
3-1
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com