RDA Microelectronics, Inc. RDA6625e Front-end Module
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RDA6625e Front-end Module
Matching
Circuit
Matching
Circuit
Controller
DCS/PCS PA
GSM/EGSM PA
ESD
protect
DCSIN
GSMIN
CTR0
RX3
VCCCT
CTR1
TXEN
RAMP
RX2
GND
GND
17
CAP
NC
GSMIN
CAP
15
13
12
11 14
18
21
19
20
8
1
DCSIN
ANT
GND
GND NC
NC
GND
CTR0
TXEN
RAMP
24
22
23
16
GND
VCCGND
26
28
29
30 27
GND GND
VCC
25
CTR1
7
4
6
5
3
2
NC
GND
GND
GND
RX3
RX2
GND
10
9
GND
GND
31
32
GND
Pin Name definitio n
Pin Pin Name Description Pin Pin Name Description
1~4 GND Ground 18 TXEN TX enable pin
5 NC Reserved 19 RAMP Ramp control pin
6 RX2 RX port 20 CAP Connected capacitor
7 RX3 RX port 21 NC Reserved
8 GND Ground 22 CAP Connected capacitor
9 ANT Antenna port 23 DCSIN DCS/PCS RF input port
10~12 GND Ground 24 GSMIN GSM/EGSM RF input port
13~14 VCC Power supply 25 GND Ground
15 GND Ground 26,28 NC Reserved
16 CTR1 Control logic pin 27 GND Ground
17 CTR0 Control logic pin 29~32 GND Ground
The RDA6625e is a high-power, high-efficiency
quad-band front-end Module. This device is
designed for GSM850, EGSM900, DCS1800,
PCS1900 handheld digital cellular equipment. The
module consists of quad band power amplifiers
and antenna switch. The power amplifiers, switch
and their controller are fabricated with GaAs HBT
and CMOS respectively.
The device package is 5mm×5mm×1.1mm
32-pins LGA. The input and output are realized
on-chip matched to 50Ω. The RDA6625e requires
few external components, simplifying PCB layout
and reducing PCB board space.
Features
Ultra-Small 5mm×5mm Package
Quad-Band Power Amplifier with
RF switches
ESD protection at Antenna
Complete Power Control Solution
High efficiency
Low supply voltage (3~4.5V)
Input/Output matched @ 50 Ω
Advanced HBT/CMOS process
Functi on Block Diagram
Pin Assignment
