ACPF-7003
High Rx and Image Rejection Tx Filter for US PCS Band
Data Sheet
Features
High rejection from a single lter with no switches
required
True split band replacement
Passband: 1850-1910 MHz
35 dB min Attenuation, 1930-1990 MHz
2.5 dB Typical Insertion Loss
25dB image rejection at 1830 MHz
Space saving solution
- Small footprint: 1.6 x 2.0-mm solution
- Low pro le package: 0.9 mm high (Typ)
- 1.0mm (Max)
Applications
US PCS band handsets
Wireless Data terminals
General Description
The ACPF-7003 is a high rejection full band transmit l-
ter designed for US PCS handsets. Its performance rivals
splitband surface acoustic wave (SAW) transmit lters.
Since a single lter provides the rejection, no switches
are required, saving board space and external compo-
nents, eliminating switch loss, and reducing program-
ming complexity. Furthermore, with 25dB rejection at
1830 MHz, it is a true split band replacement.
The ACPF-7003 FBAR transmit lter utilizes Avago Tech-
nologies’ Microcap bonded-wafer chip scale packaging
technology. This process allows the ultra small lters
to be assembled into a Molded Chip on Board (MCOB)
Module.
In typical cellular phone architectures, the transmit lter
ts between the driver ampli er and the power ampli-
er. This lter reduces the noise in the Rx band being
ampli ed by the transmit chain, enhancing receiver sen-
sitivity. High rejection keeps unwanted signals out of
the receive path.
Avago Technologies’ thin-Film Bulk Acoustic Resonator
(FBAR) technology makes possible high-Q lters at a
fraction their usual size.