Sony CXA3222N Tx gain control amplifier Datasheet

CXA3222N
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.
8 pin SSOP (Plastic)
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
6
V
• 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 + 0.3 V
• Signal input voltage
–0.3 to VCC + 0.3 V
• Differental signal input voltage
0 to 2.5
V
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.
–1–
E97810-PS
CXA3222N
Block Diagram
IF Input
Gain control
Supply Voltage
CDMA IN
OUT
CDMA INX
OUTX
GCTL
VCC
Bias
Driver
Ground
GND
Power Save
PSV
Pin Configuration
CDMA IN
1
8
GCTL
CDMA INX
2
7
VCC
GND
3
6
OUT
PSV
4
5
OUTX
–2–
IF Output
CXA3222N
Pin Description
Pin
No.
1
Symbol
CDMA IN
Pin voltage
TYP (V)
Equivalent circuit
Description
1.1
40k
40k
Differential input pins for CDMA
transmit IF signal.
2
CDMA INX
1.1
GND
1
3
GND
2
Ground.
0
VCC1
4
PSV
—
Power save function pin.
High: Active
Low: Power save
4
135k
GND
6
5
5
6
OUTX
OUT
—
VCC2
510
510
12.25k
12.25k
Differential output pins for transmit
IF signal.
Open collector output.
—
GND
7
VCC
Positive power supply.
3.0
VCC1
8k
8
GCTL
—
8k
Gain control pin.
8
6k
6k
GND
–3–
CXA3222N
Electrical Characteristics
(VCC = 3.0V, Ta = 27°C)
DC Characteristics
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
Current consumption 1
ICC1
Vpsv = 3.0V, Vgctl = 1.5V, Pin 7
10
Current consumption 2
ICC2
Vpsv = 0 V, Vgctl = 1.5V, Pin 7
5
Input current pin 4H
IpsvH
Vpsv = 3.0V
Input current pin 4L
IpsvL
Vpsv = 0 V
Input current pin 8H
IgctlH
Vgctl = 3.0V
Input current pin 8L
IgctlL
Vgctl = 0.5V
–1
PSV high voltage
VpsH
Pin 4
2.5
PSV low voltage
VpsL
Pin 4
18
mA
40
1
µA
–15
1
0.5
AC Characteristics
Parameter
15.7 21.5
V
(VCC = 3.0V, Ta = 27°C)
Symbol
Conditions
Min. Typ. Max. Unit
Operating frequency
range
Fr
Gain 2.3
G2.3
f = 130.38MHz, level = –22.5dBm,
Vgctl = 2.3V
13
17
21
Gain 1.5
G1.5
Vgctl = 1.5V
–28
–24
–20
Gain 1.0
G1.0
Vgctl = 1.0V
–58
–54
–50
Gain 0.7
G0.7
Vgctl = 0.7V
–75
–70
–65
Gain slope
GCLIN
56
59
62
Input level 3rd order
intercept point
IIP3
Noise Figure
NF
Gain at Vgctl = 2.0V – Gain at Vgctl = 1.0V
G = 15dB∗1
f1 = 129.38MHz, f2 = 131.38MHz
Measure of 130.38MHz
G = 15dB∗1
Measure of 130.38MHz
300 MHz
50
∗1 Adjust GCTL voltage, and set the overall gain to 15dB.
–4–
dB/V
dBm
–8.5 –4.5
28
dB
32
dB
CXA3222N
Measurement Circuit
1 CDMA IN
GCTL 8
A8
1000p
CDMA
INPUT
V16
1k
1µ
∗1
0.01µ
2k
V7
1000p
2 CDMA INX
A7
0.01µ
820n∗3
820n∗3
∗2
VCC 7
OUT 6
3 GND
∗1
OUTPUT
1µ
2.1k
V4
A4
OUTX 5
4 PSV
∗1 TOKO, Inc. B5FL 616DS-1135
∗2 Coilcraft, Inc. 1008HS-102TKBC
∗3 Coilcraft, Inc. 1008HS-821TKBC
Application Circuit
VCC
0.01µ
1000p
1k
GCTL
1 CDMA IN
CDMA
RX IF
INPUT
∗
Gain Control
Voltage
8
∗
100p
2 CDMA INX
VCC 7
0.01µ
1000p
OUT 6
3 GND
∗
1000p
RX IF
OUTPUT
Active
Sleep
OUTX 5
4 PSV
1000p
∗
∗ 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.
–5–
CXA3222N
Design Reference Values
Single ended measurement
Item
(VCC = 3.0V, Ta = 27°C)
Conditions
Symbol
Typ.
Unit
10
kΩ
0.92
pF
Input resistance
Rin
Input capacitance
Cin
Output resistance
Rout
6
kΩ
Output capacitance
Cout
0.9
pF
f = 130.38MHz, Vgctl = 1.5V
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.
–6–
CXA3222N
IIP3
Sensitivity
15
40
VCC = 3.0V
VCC = 3.0V
20
10
5
IIP3 [dBm]
Power gain [dB]
0
–20
–40
0
–5
–60
T = –40°C
T = 27°C
T = 85°C
–80
–10
–15
–60
–100
0
0.5
1
1.5
2
2.5
3
T = –40°C
T = 27°C
T = 85°C
3.5
–40
–20
0
20
40
Power gain [dB]
Vgctl [V]
Gain Error from Room Temp
Noise Figure
6
100
VCC = 3.0V
VCC = 3.0V
90
4
Gain error [dB]
Noise figure [dB]
80
70
60
50
40
30
20
–80
T = –40°C
T = 27°C
T = 85°C
–60
–40
2
0
–2
T = –40°C
T = 85°C
–4
–20
0
–6
–80
20
–60
–40
–20
0
Power gain [dB]
Power gain [dB]
–7–
20
40
CXA3222N
Package Outline
Unit: mm
8PIN SSOP (PLASTIC)
+ 0.2
1.25 – 0.1
∗3.0 ± 0.1
0.1
8
5
6.4 ± 0.2
∗4.4 ± 0.1
A
4
1
0.65
+ 0.08
0.24 – 0.07
0.25
0.13 M
(0.5)
0° to 10°
(0.15)
+ 0.025
0.17 – 0.015
+ 0.08
0.24 – 0.07
(0.22)
0.6 ± 0.15
0.1 ± 0.05
B
DETAIL A
DETAIL B
NOTE: Dimension “∗” does not include mold protrusion.
PACKAGE STRUCTURE
PACKAGE MATERIAL
EPOXY RESIN
SONY CODE
SSOP-8P-L01
LEAD TREATMENT
SOLDER / PALLADIUM
PLATING
EIAJ CODE
SSOP008-P-0044
LEAD MATERIAL
COPPER ALLOY
PACKAGE MASS
0.04g
JEDEC CODE
–8–
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