CXA3221AN [SONY]
RX Gain Control Amplifier; RX增益控制放大器
| 型号： | CXA3221AN |
| 厂家： | 
SONY CORPORATION |
| 描述： | RX Gain Control Amplifier |
| 文件： | 总8页 (文件大小：128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CXA3221AN
RX Gain Control Amplifier
Description
8 pin SSOP (Plastic)
CXA3221AN is an RX 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
• Power save function included
Absolute Maximum Ratings
• Supply voltage
VCC
6
V
• Operating temperature
• Storage temperature
• Supply voltage range
• Logic input voltage
• Signal input voltage
Topr –55 to +125 °C
Tstg –65 to +150 °C
–0.3 to 6
V
–0.3 to VCC + 0.3 V
–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
CDMA IN
OUT
IF Input for CDMA
IF Output
CDMA INX
OUTX
Gain control
GCTL
VCC
Supply Voltage
Bias
Driver
Ground
GND
PSV
Power Save
Pin Configuration
8
7
6
5
GCTL
VCC
GND
1
2
3
4
CDMA IN
CDMA INX
PSV
OUTX
OUT
– 2 –
CXA3221AN
Pin Description
Pin
Pin voltage
TYP (V)
Symbol
No.
Equivalent circuit
Description
Ground.
1
GND
0
VCC
2
CDMA IN
1.15
2k
2k
2
3
Differential input pins for received
CDMA IF signal.
1.15
3
CDMA INX
GND
VCC
Power save function pin.
High: Active
Low: Power save
4
PSV
—
4
135k
GND
VCC
460
12.3k
460
5
—
5
OUT
12.3k
6
Differential output pins for received
CDMA IF signal.
Open collector output.
OUTX
6
7
—
GND
Positive power supply.
VCC
3.0
VCC
8k
8k
200
8
8
GCTL
—
Gain control pin.
6k
6k
GND
– 3 –
CXA3221AN
Electrical Characteristics
(VCC = 3.0V, Ta = 27°C)
Min. Typ. Max. Unit
DC Characteristics
Parameter
Symbol
Conditions
Vpsv = 3.0V, Vgctl = 1.5V, Pin 7
Vpsv = 0 V, Vgctl = 1.5V, Pin 7
Vpsv = 3.0V
10.2
18
7
5
15
40
1
mA
Current consumption 1
Current consumption 2
Input current pin 8H
Input current pin 8L
Input current pin 16H
Input current pin 16L
PSV high voltage
ICC1
ICC2
IpsvH
IpsvL
IgctlH
IgctlL
VpsH
VpsL
–15
µA
Vpsv = 0 V
1
Vgctl = 3.0V
–1
Vgctl = 0.5V
2.5
Pin 4
V
0.5
PSV low voltage
Pin 4
AC Characteristics
(VCC = 3.0V, Ta = 27°C)
Unit
Min. Typ. Max.
Parameter
Symbol
Fr
Conditions
Operating frequency
range
50
300 MHz
50
42
–7
46
–3
Gain 2.4
Gain 1.5
Gain 0.6
Gain slope
G2.4
G1.5
G0.6
GCLIN
f = 210.38MHz, Vgctl = 2.4V
Vgctl = 1.5V
1
dB
–59 –55 –51
Vgctl = 0.6V
58
61
64 dB/V
Gain at Vgctl = 2.0V – Gain at Vgctl = 1.0V
1
G = 40dB
Input level 3rd order
intercept point
–42 –38
5
dBm
IIP3
f1 = 209.38MHz, f2 = 211.38MHz
Measure of 210.38MHz
1
G = 40dB
8
dB
Noise Figure
NF
Measure of 210.38MHz
1 Adjust GCTL voltage, and set the overall gain to 40dB.
– 4 –
CXA3221AN
Measurement Circuit
V8
10k
1
2
3
4
GND
GCTL
VCC
8
7
6
5
A8
A7
0.01µ
1000p
CDMA IN
CDMA INX
PSV
1
0.01µ
CDMA
INPUT
180n
OUTX
OUT
1
1000p2
OUTPUT
1.6k
A4
1 TOKO, Inc. B5FL 616DS-1135
2 Coilcraft, Inc. 0805HS-181TKBC
3 Coilcraft, Inc. 0805HS-151TKBC
Application Circuit
VCC
0.01µ
Gain Control
Voltage
1k
1
2
3
4
GND
GCTL
VCC
8
7
6
5
1000p
100p
CDMA IN
CDMA INX
PSV
0.01µ
RX IF
INPUT
1000p
OUTX
OUT
1000p
RX IF
OUTPUT
Active
Sleep
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
(VCC = 3.0V, Ta = 27°C)
Typ.
1.6
Unit
kΩ
pF
Symbol
Conditions
Item
Input resistance
Input capacitance
Output resistance
Output capacitance
Rin
Cin
1.3
f = 210.38MHz, Vgctl = 1.5V
kΩ
pF
Rout
Cout
5.9
0.73
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
–10
–20
–30
–40
–50
–60
60
40
VCC = 3.0V
VCC = 3.0V
20
0
–20
–40
–60
–80
T = –40°C
T = 27°C
T = 85°C
T = –40°C
T = 27°C
T = 85°C
–80 –60 –40 –20
0
20
40
60
0
0.5
1
1.5
2
2.5
3
Power gain [dB]
Vgctl [V]
Noise Figure
Gain Error from Room Temp
25
20
15
10
5
6
4
VCC = 3.0V
VCC = 3.0V
2
0
–2
–4
–6
T = –40°C
T = 27°C
T = 85°C
T = –40°C
T = 85°C
0
–10
0
10
20
30
40
50
60
–80
–60 –40
–20
0
20
40
60
Power gain [dB]
Power gain [dB]
– 7 –
CXA3221AN
Package Outline
Unit: mm
8PIN SSOP (PLASTIC)
+ 0.2
1.25 – 0.1
3.0 ± 0.1
0.1
8
5
A
4
1
0.65
+ 0.08
0.24 – 0.07
0.25
0.1 ± 0.05
0.13
M
B
+ 0.08
0.24 – 0.07
0° to 10°
(0.22)
DETAIL A
DETAIL B
NOTE: Dimension “ ” does not include mold protrusion.
PACKAGE STRUCTURE
PACKAGE MATERIAL
LEAD TREATMENT
LEAD MATERIAL
EPOXY RESIN
SOLDER / PALLADIUM
SSOP-8P-L01
SONY CODE
EIAJ CODE
PLATING
SSOP008-P-0044
COPPER ALLOY
JEDEC CODE
PACKAGE MASS
0.04g
– 8 –
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