GSM/PCS Description CXA3174N 4-bit digital control variable gain
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CXA3174N
GSM/PCS
Description CXA3174N 4-bit digital control variable gain amplifier suitable communications. Features Gain control amplifier with wide gain variable range Doubler circuit (local) signal eliminates need phase shifter Functions signal gain control circuit quadrature demodulator Doubler circuit signal Gain control 4-bit digital data Power saving Applications portable telephones Structure Bipolar silicon monolithic Block Diagram Package Outline Absolute Maximum Ratings Supply voltage Operating temperature range Topr Storage temperature range Tstg +150 Operating Conditions Supply voltage SSOP (Plastic)
IXOUT
IOUT
IFIN
IFINX
Gain Control Phase Shifter Gain Cont
QXOUT
QOUT
LOIN
Sony reserves right change products specifications without prior notice. This information does convey license implication otherwise under patents other right. Application circuits shown, any, typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits.
E96932-TE
CXA3174N
Description Symbol voltage Equivalent circuit Description
QXOUT
inverted signal output.
QOUT
5.4k
signal output.
IOUT
signal output.
IXOUT
inverted signal output.
connected.
LOIN
Local signal input.
control signal input. MSB.
control signal input. 3LSB.
control signal input. 2LSB.
control signal input. LSB.
CXA3174N
Symbol
voltage
Equivalent circuit
Description
Power saving control.
IFINX
inverted signal input.
1.25
1.1k 1.1k
IFIN
signal input.
Power supply. Ground.
CXA3174N
Electrical Characteristics Item Current consumption Current consumption standby input frequency range Symbol ICCps IFINf VC1, "Low" Temperature fluctuation input level (330 conversion) VC1, "High" Temperature fluctuation input level (330 conversion) PS=0 Conditions Min.
Typ. Max. Unit
Maximum gain
Gmax
Minimum gain
Gmin
Gain variable step Gain setting deviation Gain setting time input frequency range input level output frequency range output signal amplitude output maximum amplitude1 output maximum amplitude2 output maximum amplitude3 output maximum amplitude4 output amplitude deviation
Gstep Gdev LOINf LOINv Differential output amplitude load input level (330 conversion) Gain=0 Differential output amplitude load Gain=60 Differential output amplitude load Gain=40 Differential output amplitude load Gain=20 Differential output amplitude load Gain=0 Differential output amplitude load input level (330 conversion) Gain=0
2000
mVrms
mVp-p
IQvmax1 IQvmax2 IQvmax3 IQvmax4
Vp-p Vp-p mVp-p mVp-p
IQvdev
-0.5
input level value Application Circuit. measured value differential output.
CXA3174N
Item
Symbol
Conditions Differential output
Min.
Typ.
Max.
Unit
output phase deviation1
IQpdev1
load input level (330 conversion) Gain=0 input level mVrms Differential output load input level (330 conversion) Gain=0 input level mVrms
-2.5
output phase deviation2
IQpdev2
-2.5
output voltage output voltage deviation Noise figure1 Noise figure2 Tertiary intercept point1 Tertiary intercept point2 input voltage Logic input High voltage Logic input voltage Logic input resistance LOIN input resistance IFIN input resistance IFIN input level
IQvdc IQvdcd IP31 IP32 VpsL VCvH VCvL LOINr IFINr IFINv Differential input conversion I-IX, Q-QX Output voltage difference Gain=60 Gain=20 Gain=60 conversion Gain=20 conversion
22.5
VCC+0.3
Design Reference Item LOIN input capacitance IFIN input capacitance Symbol LOINc IFINc Differential input Conditions Min. Typ. Max. Unit
input level value Application Circuit. measured value differential output.
CXA3174N
Control (PS)
Power saving Power saving status Active Sleep
Control Symbol
Gain setting 3LSB 2LSB 4-bit display "0000" "0001" "0010" "0011" "0100" "0101" "0110" "0111" "1000" "1001" "1010" "1011" "1100" "1101" "1110" "1111" Setting gain (dB)
Note Operation Take care handle because electrostatic discharge strength weak Pins
CXA3174N
Gain control characteristics VCC=3.0V, Ta=27°C
Upper
Gain (dB)
width Lower
1111 1010 0101 0000
Gain setting value (4bits)
Example gain control temperature characteristics VCC=3.0V -35°C 80°C
Gain (dB)
1111 1010 0101 0000
Gain setting value (4bits)
CXA3174N
Electrical Characteristics Measurement Circuit
IXOUT IOUT IOUT IOUT IXOUT IXOUT
QXOUT QXOUT
QXOUT
QOUT QOUT
QOUT
Phase Shifter
LOIN
LOIN
LOIN
Gain Control
1000p
0.01µ 1000p
IFIN
Gain Cont
IFIN
IFINX
1000p
IFINX
CXA3174N
Application Circuit
QXOUT QOUT QOUT
IXOUT
IXOUT
QXOUT
IOUT
IOUT
Phase Shifter
LOIN 5.6µ
LOIN
6.8p
Gain Control
1000p
0.01µ
Gain Cont
IFIN
1000p
IFINX
1000p
Application circuits shown typical examples illustrating operation devices. Sony cannot assume responsibility problems arising these circuits infringement third party patent other right same.
CXA3174N
Package Outline
Unit
20PIN SSOP (PLASTIC)
1.25
0.22 0.05
0.65 0.12 0.05 0.15 0.02
DETAIL NOTE: Dimension does include mold protrusion.
PACKAGE STRUCTURE
PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE SSOP-20P-L01 SSOP020-P-0044 LEAD TREATMENT LEAD MATERIAL PACKAGE WEIGHT EPOXY RESIN SOLDER PALLADIUM PLATING COPPER ALLOY 0.1g
-10-
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