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E01851B34
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any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXG1115ER
24 pin VQFN (Plastic)
Description
The CXG1115ER is a dual-band (CDMA/GPS) low
noise amplifier/mixer MMIC for the Japan CDMA
cellular phones (J-CDMA). This IC is designed using
the Sony’s GaAs J-FET process.
Features
• High gain:
CDMA LNA High current mode
Gp = 14.5dB (Typ.)
CDMA MIX Gc = 12dB (Typ.)
GPS LNA Gp = 18dB (Typ.)
GPS MIX Gc = 9.5dB (Typ.)
• Low noise figure:
CDMA LNA High current mode
NF = 1.5dB (Typ.)
CDMA MIX NF = 4.5dB (Typ.)
GPS LNA NF = 1.7dB (Typ.)
GPS MIX NF = 5dB (Typ.)
• Low distortion
CDMA LNA High current mode
Input IP3 = +3.5dBm (Typ.)
CDMA MIX Input IP3 = +2dBm (Typ.)
GPS LNA Input IP3 = –5.5dBm (Typ.)
GPS MIX Input IP3 = +2dBm (Typ.)
• Low noise amplifier with by-pass switch
• J-CDMA/GPS supported dual band
• Sharing the two-system LO signal source by the
doubler system
• 24-pin VQFN small package
Dual-band Low Noise Amplifier/Mixer
Applications
J-CDMA
Structure
GaAs J-FET MMIC
Absolute Maximum Ratings (Ta = 25°C)
•Supply voltage VDD 4.5 V
•Input power PIN +5 dBm
•Operating temperature Topr –35 to +85 °C
•Storage temperature Tstg –65 to +150 °C
Recommended Operating Conditions
•Supply voltage VDD 2.7 to 3.3 V
•Control voltage VCTL (H) 2.4 to 3.3 V
VCTL (L) 0 to 0.3 V
GPS IF
OUT
/V
DD
(MIX)
1
GPS MIX RF
IN
2
GND
3
MPX OPT
4
CTL1
5
GPS LNA
OUT
/V
DD
(LNA)
CTL3
CDMA MIX RF
IN
GND
NC
CTL2
CDMA LNA
OUT
/V
DD
(LNA)
CAP
CDMA LNA
IN
GND
LNA OPT
GPS LNA
IN
CAP
LO
IN
V
DD
(GPS LO)
GND
V
DD
(Logic)
V
DD
(CDMA LO)
CDMA IF
OUT
/V
DD
(MIX)
6
18
17
16
15
14
13
12 11 10 9 8 7
19 20 21 22 23 24
×2
Block Diagram and Pin Configuration
GaAs MMICs are ESD sensitive devices. Special handling precautions are required.