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Future
S
S
Communications
Integrated circuit Inc.
FC7785W
Dual-band (Low/High Band)CDMA
1x/EVDO Rev.A Diversity Transceiver
D
ESCRIPTION
FC7785W is a dual-band CDMA transceiver with
receiver diversity FCI’s zipRF™ family. The
FC7785W uses the same die with FC7785 with
different package type. The FC7785W covers BC0,
BC1, BC4, BC10, and BC14 band class. It is a
highly integrated chip working with a single po wer
F
EATURES
Single-chip dual-band (Low-band and High-band) receiver
diversity transceiver without need of external LNA
FC7785W covers band class of BC0, BC1, BC4, BC10, and
BC14.
Low noise and highly linear LNA, mixer, and CSF for
Low-band/High-band CDMA
supply. Because zero-IF architecture is used for
Low noise, highly linear, wide dynamic range transmitter
FC7785W, additional components such as bulky IF
SAW filters and other IF matching components are
no longer required. FC7785W is featured to operate
in the high data rate EVDO. Three-wired serial-toparallel interface (SPI) protocol enables FC7785W
to operate in the various modes. FC7785W
contains complete dual-band receiver’s main and
with baseband amplifier, up-converter, drive amplifier
Automatic DC-offset calibration, filter calibration, VCO
calibration
Fully integrated low phase noise Rx, Tx, and Fractional-
N PLL with fine frequency resolution
Greater than 85-dB transmit power control
diversity path such as LNA, down-conversion mixer,
Support 3-wired SPI protocol
channel selection filter (CSF), Rx VCO, Rx PLL,
and LO distribution block. FC7785W also contains
complete dual-band transmitter path such as
WLCSP package with dimension of 4.87 x 4.79 mm with
max. height of 0.65mm.
baseband amplifier, up-converter, RF variable-gain
block, drive amplifier, Tx VCO, Tx PLL, and LO
LOCK DIAGRAM
B
distribution block. FC7785W is optimized to have
high SNR in 1x and EVDO Rev.A receive and
transmit mode. FC7785W is available in 4.87 x 4.79
mm WLCSP package. The max. height of the
package is 0.65mm.
A
PPLICATIONS
-
Dual-band CDMA 1x/EVDO Rev.A diversity
mobile phone or data card.
R
EVISION HISTORY
-
Preliminary
-
Preliminary
-
Preliminary
version release: Jan, 20, 2012
version release: Apr, 10, 2012
version release: Apr, 08, 2013
RX1_PLNA_OUT
RX1_PLNA_BIAS
RX1_PLNA_IN
RX1_CLNA_IN
RX1_CLNA_BIAS
RX1_IP
RX1_IM
RX1_QP
RX1_QM
TX_RBIAS
TX_VC
TX_CDA_OUT
TX_PDA_OUT
Control Part
BIAS
TX
RX1_CMIX_INP
RX1_CMIX_INM
RX1_PMIX_INM
RX_RBIAS
RX
CSF
CSF
TX_QP
RX1_PMIX_INP
RX_VCO_FTUNE
RX_LOIO
RxVCO
& LO
LOAD
RX PLL
TX VCO
& LO
TX_IP
TX_IM
TX_QM
TX_LOIO
RX1_CLNA_OUT
For latest specifications, technical questions and additional product information, visit website or e-mail
FCI Inc.
th
Floor, Kins Tower , 25-1 Website: http://www.fci.co.kr
11
Jeongja-Dong, Bundang-Gu, E-mail: [email protected]
Sungnam City, Gyunggi-do, Phone: 82-31-711-6444
463-811, KOREA Fax: 82-31-711-0313
RX2_PMIX_INP
LOAD
TX PLL
LOCK
RX2_PLNA_OUT
RX2_CLNA_OUT
RX2_CMIX_INM
RX2_CMIX_INP
RX2_PMIX_INM
RX2_PLNA_BIA
RX2_PLNA_IN
RX2_CLNA_IN
RX2_CLNA_BIA
CSF
CSF
TCXO BUFFER
CDMA
SPI
TX_CP
TX_CP_HOLD
RX2_IP
RX2_IM
RX2_QP
RX2_QM
TCXO
SPST
SPDT
SPCK
TX_ON
FCI Confidential and Proprietary Information 1 / 19 Last updated at Apr/08/2013
The data can be changed without prior notice.
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