Sony CXA3221AN Rx gain control amplifier Datasheet

CXA3221AN
RX Gain Control Amplifier
Description
CXA3221AN is an RX 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
• 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
• Differential 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–
E98910A8Y
CXA3221AN
Block Diagram
IF Input for CDMA
Gain control
Supply Voltage
CDMA IN
OUT
CDMA INX
OUTX
GCTL
VCC
Bias
Driver
Ground
GND
Power Save
PSV
Pin Configuration
GND
1
8
GCTL
CDMA IN
2
7
VCC
CDMA INX
3
6
OUTX
PSV
4
5
OUT
–2–
IF Output
CXA3221AN
Pin Description
Pin
No.
1
Symbol
GND
Pin voltage
TYP (V)
Equivalent circuit
Description
Ground.
0
VCC
2
CDMA IN
1.15
2k
2k
Differential input pins for received
CDMA IF signal.
2
3
3
CDMA INX
1.15
GND
VCC
4
PSV
—
Power save function pin.
High: Active
Low: Power save
4
135k
GND
VCC
5
OUT
—
460
460
12.3k
12.3k
5
6
Differential output pins for received
CDMA IF signal.
Open collector output.
6
OUTX
—
GND
7
VCC
Positive power supply.
3.0
VCC
8k
8k
200
8
GCTL
—
Gain control pin.
8
6k
6k
GND
–3–
CXA3221AN
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
7
10.2
15
Current consumption 2
ICC2
Vpsv = 0 V, Vgctl = 1.5V, Pin 7
5
18
40
Input current pin 8H
IpsvH
Vpsv = 3.0V
Input current pin 8L
IpsvL
Vpsv = 0 V
Input current pin 16H
IgctlH
Vgctl = 3.0V
Input current pin 16L
IgctlL
Vgctl = 0.5V
–1
PSV high voltage
VpsH
Pin 4
2.5
PSV low voltage
VpsL
Pin 4
1
µA
–15
1
0.5
AC Characteristics
Parameter
mA
V
(VCC = 3.0V, Ta = 27°C)
Symbol
Conditions
Min. Typ. Max. Unit
Operating frequency
range
Fr
Gain 2.4
G2.4
f = 210.38MHz, Vgctl = 2.4V
42
46
50
Gain 1.5
G1.5
Vgctl = 1.5V
–7
–3
1
Gain 0.6
G0.6
Vgctl = 0.6V
–59
–55
–51
Gain slope
GCLIN
58
61
64
Input level 3rd order
intercept point
IIP3
–42
–38
Noise Figure
NF
Gain at Vgctl = 2.0V – Gain at Vgctl = 1.0V
G = 40dB∗1
f1 = 209.38MHz, f2 = 211.38MHz
Measure of 210.38MHz
G = 40dB∗1
Measure of 210.38MHz
300 MHz
50
∗1 Adjust GCTL voltage, and set the overall gain to 40dB.
–4–
5
dB
dB/V
dBm
8
dB
CXA3221AN
Measurement Circuit
V8
10k
1 GND
GCTL 8
A8
0.01µ
1000p
2 CDMA IN
180n
3 CDMA INX
∗2
1000p
A7
150n∗3
CDMA
INPUT
VCC 7
150n∗3
∗1
0.01µ
OUTX 6
∗1
OUTPUT
1.6k
A4
OUT 5
4 PSV
∗1 TOKO, Inc. B5FL 616DS-1135
∗2 Coilcraft, Inc. 0805HS-181TKBC
∗3 Coilcraft, Inc. 0805HS-151TKBC
Application Circuit
VCC
0.01µ
1k
GCTL
1 GND
8
1000p
100p
2 CDMA IN
RX IF
INPUT
∗
Gain Control
Voltage
VCC 7
0.01µ
∗
OUTX 6
3 CDMA INX
∗
1000p
1000p
RX IF
OUTPUT
Active
Sleep
OUT 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–
CXA3221AN
Design Reference Values
Single ended measurement
Item
Symbol
(VCC = 3.0V, Ta = 27°C)
Conditions
Typ.
Unit
1.6
kΩ
1.3
pF
Input resistance
Rin
Input capacitance
Cin
Output resistance
Rout
5.9
kΩ
Output capacitance
Cout
0.73
pF
f = 210.38MHz, 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 2 and 3 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–
CXA3221AN
IIP3
Sensitivity
0
60
VCC = 3.0V
VCC = 3.0V
40
–10
–20
IIP3 [dBm]
Power gain [dB]
20
0
–20
–30
–40
–40
T = –40°C
T = 27°C
T = 85°C
–60
–50
–60
–80
–80
0
0.5
1
1.5
2
2.5
T = –40°C
T = 27°C
T = 85°C
3
–60
–40
–20
0
Noise Figure
60
6
VCC = 3.0V
VCC = 3.0V
4
Gain error [dB]
20
Noise figure [dB]
40
Gain Error from Room Temp
25
15
10
T = –40°C
T = 27°C
T = 85°C
5
0
–10
20
Power gain [dB]
Vgctl [V]
0
10
20
2
0
–2
T = –40°C
T = 85°C
–4
30
40
50
–6
–80
60
Power gain [dB]
–60
–40
–20
0
Power gain [dB]
–7–
20
40
60
CXA3221AN
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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