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TX Gain Control Amplifier
For the availability of this product, please contact the sales office.
Description
CXA3222N is a TX gain control amplifier suitable
for CDMA cellular/PCS phone.
Features
• Wide gain control range
• Linear gain slope
• Wideband operation (50MHz to 300MHz)
• Very small package (8 Pin SSOP)
• Low voltage operation
• High output IP3
• Power save function included
Absolute Maximum Ratings
• Supply voltage VCC 6V
•Operating temperature Topr –55 to +125 °C
• Storage temperature Tstg –65 to +150 °C
• Supply voltage range –0.3 to 6 V
• Logic input voltage –0.3 to VCC + 0.3V
• Signal input voltage –0.3 to VCC + 0.3V
•
Differental signal input voltage
0 to 2.5 V
CXA3222N
8 pin SSOP (Plastic)
Operating Condition
Supply voltage VCC 2.7 to 3.8 V
Applications
CDMA cellular/PCS phone
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
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.
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E97810-PS
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Block Diagram
CXA3222N
IF Input
Gain control
Supply Voltage
Ground
Power Save
CDMA IN
CDMA INX
GCTL
VCC
GND
PSV
Bias
Driver
OUT
OUTX
IF Output
Pin Configuration
CDMA IN
CDMA INX
GND
PSV
8
1
2
3
4
GCTL
V
CC
7
OUT
6
OUTX
5
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Pin Description
CXA3222N
Pin
No.
Symbol
1 CDMA IN
CDMA INX
2
3
GND
4 PSV
Pin voltage
TYP (V)
1.1
1.1
0
—
Equivalent circuit Description
40k40k
Differential input pins for CDMA
transmit IF signal.
GND
1
2
Ground.
VCC1
Power save function pin.
4
135k
High: Active
Low: Power save
5 OUTX
OUT
6
7
VCC
8 GCTL
—
—
3.0
—
5
12.25k 12.25k
8
GND
6
510510
VCC2
Differential output pins for transmit
IF signal.
Open collector output.
GND
Positive power supply.
CC1
8k8k
V
Gain control pin.
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6k6k
GND
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Electrical Characteristics
CXA3222N
DC Characteristics
Parameter Symbol Conditions Min. Unit
Current consumption 1
Current consumption 2
Input current pin 4H
Input current pin 4L
Input current pin 8H
Input current pin 8L
PSV high voltage
PSV low voltage
AC Characteristics
Parameter Symbol Conditions Min.
Operating frequency
range
ICC1
ICC2
IpsvH
IpsvL
IgctlH
IgctlL
VpsH
VpsL
Fr
Vpsv = 3.0V, Vgctl = 1.5V, Pin 7
Vpsv = 0 V, Vgctl = 1.5V, Pin 7
Vpsv = 3.0V
Vpsv = 0 V
Vgctl = 3.0V
Vgctl = 0.5V
Pin 4
Pin 4
(VCC = 3.0V, Ta = 27°C)
Typ.
Max.
10
5
15.7
18
21.5
mA
40
1
–15
µA
1
–1
2.5
V
0.5
(VCC = 3.0V, Ta = 27°C)
50
Typ.
Max.
300
Unit
MHz
Gain 2.3
Gain 1.5
Gain 1.0
Gain 0.7
Gain slope
Input level 3rd order
intercept point
Noise Figure
∗1
Adjust GCTL voltage, and set the overall gain to 15dB.
G2.3
G1.5
G1.0
G0.7
GCLIN
IIP3
NF
f = 130.38MHz, level = –22.5dBm,
Vgctl = 2.3V
Vgctl = 1.5V
Vgctl = 1.0V
Vgctl = 0.7V
Gain at Vgctl = 2.0V – Gain at Vgctl = 1.0V
G = 15dB
f1 = 129.38MHz, f2 = 131.38MHz
Measure of 130.38MHz
G = 15dB
Measure of 130.38MHz
∗1
∗1
13
–28
–58
–75
56
–8.5
17
–24
–54
–70
59
–4.5
28
21
–20
–50
–65
62
32
dB
dB/V
dBm
dB
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Measurement Circuit
CXA3222N
CDMA
INPUT
Application Circuit
1µ
∗1
1000p
CDMA IN
1
GCTL
8
1k
0.01µ
V16
A8
2k
V7
A7
∗1
OUTPUT
V4
1000p
∗
2
CDMA INX
2
GND
3
V
CC
OUT
7
3
∗
820n
0.01µ
3
∗
820n
6
1µ
2.1k
A4
PSV
4
OUTX
5
∗
1
TOKO, Inc. B5FL 616DS-1135
∗
2
Coilcraft, Inc. 1008HS-102TKBC
∗
3
Coilcraft, Inc. 1008HS-821TKBC
VCC
CDMA
RX IF
INPUT
∗
1000p
∗
1000p
CDMA IN
1
CDMA INX
2
GND
3
GCTL
CC
V
OUT
0.01µ
1k
8
100p
7
0.01µ
6
∗
Gain Control
Voltage
1000p
RX IF
Active
Sleep
5
PSV
4
OUTX
1000p
OUTPUT
∗
∗
Must be adjusting values to result a best impedance matching between BPF filter and this IC.
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
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CXA3222N
Design Reference Values
Single ended measurement (VCC = 3.0V, Ta = 27°C)
Item
Input resistance
Input capacitance
Symbol
Rin
Cin
Conditions
Typ.
10
0.92
Unit
kΩ
pF
f = 130.38MHz, Vgctl = 1.5V
Output resistance
Output capacitance
Rout
Cout
6
0.9
kΩ
pF
Notes on Operation
1) This IC is a wideband amplifier with wide gain control range. The decouping capacitors between GND Pin
and VCC Pin should be as close to the IC as possible.
2) The resistors connected to Pins 5 and 6 should be as close to the IC as possible.
3) This IC assumes the excellent characteristics when the differential input impedance between Pins 1 and 2 is
500Ω. Refer to the Measurement Circuit for the external element settings, etc.
4) Pay attention to handling this IC because its electrostatic discharge strength is weak.
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CXA3222N
40
VCC = 3.0V
20
0
–20
–40
Power gain [dB]
–60
–80
–100
0
0.5 1 1.5 2 2.5 3
100
90
80
70
Sensitivity
Vgctl [V]
Noise Figure
T = –40°C
T = 27°C
T = 85°C
VCC = 3.0V
VCC = 3.0V
3.5
IIP3
15
VCC = 3.0V
10
5
0
IIP3 [dBm]
–5
T = –40°C
–10
–15
–60 –20 0 20 40
T = 27°C
T = 85°C
–40
Power gain [dB]
Gain Error from Room Temp
6
VCC = 3.0V
4
2
60
50
Noise figure [dB]
40
30
20
–80
T = –40°C
T = 27°C
T = 85°C
–60 –20 0 20
–40
Power gain [dB]
0
Gain error [dB]
–2
–4
–6
–80
–60 –40 –20
Power gain [dB]
T = –40°C
T = 85°C
02040
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Package Outline Unit: mm
∗3.0 ± 0.1
8PIN SSOP (PLASTIC)
+ 0.2
1.25 – 0.1
CXA3222N
+ 0.08
0.24 – 0.07
B
0.24 – 0.07
1
+ 0.08
(0.22)
58
0.1
A
∗4.4 ± 0.1
6.4 ± 0.2
4
0.65
0.25
0.13
M
0.1 ± 0.05
0.6 ± 0.15
(0.5)
0° to 10°
+ 0.025
(0.15)
DETAIL
0.17 – 0.015
A
DETAIL B
NOTE: Dimension “∗” does not include mold protrusion.
SONY CODE
EIAJ CODE
JEDEC CODE
SSOP-8P-L01
SSOP008-P-0044
PACKAGE STRUCTURE
PACKAGE MATERIAL
LEAD TREATMENT
LEAD MATERIAL
PACKAGE MASS
EPOXY RESIN
SOLDER / PALLADIUM
COPPER ALLOY
0.04g
PLATING
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