1
CXA3002N
E95712-PP
TX Gain Control Amplifier
Description
CXA3002N is a TX gain control amplifier for CDMA
cellular mobile phone.
Features
Wide gain control range
Linear gain slope
High output IP
3
Typ. +9dBm at Gain = 35dB
Power save function included
Absolute Maximum Ratings
Supply voltage
V
CC
6
V
Operating temperature
Topr
40 to +85
C
Storage temperature
Tstg
65 to +150
C
Allowable power dissipation
P
D
420
mW
Supply voltage range
0.3 to 6
V
Logic input voltage
0.3 to V
CC
+0.3
V
Signal input voltage
0.3 to V
CC
+0.3
V
Differential signal input voltage
0 to 2.5
V
Operating Conditions
Supply voltage
3.1 to 3.8
V
Applications
CDMA cellular mobile phone
CDMA & AMPS cellular phone
Structure
Bipolar sillicon 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.
24 pin SSOP (Plastic)
For the availability of this product, please contact the sales office.
2
CXA3002N
Block Diagram
Bias
Driver
BP2
OUTX
OUT
BP1
CDMAINX
CDMAIN
GCTL
V
CC
1, 2
GND1, 2
PSV
CXA3002N
IF Output
to External
Capacitor
IF Input
Gain Control
Supply Voltage
Ground
Power Save
3
CXA3002N
Pin Configuration
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
NC
PSV
BP1
BP2
V
CC
1
GND1
NC
CDMAIN
NC
CDMAINX
NC
NC
NC
NC
GCTL
NC
NC
NC
OUTX
NC
OUT
NC
V
CC
2
GND2
CXA3002N
4
CXA3002N
Pin Description
Pin
No.
Symbol
Pin voltage
Typ. (V)
Equivalent circuit
Description
1
N.C.
No connection.
2
V
CC
1
3.6
Positive power supply.
3
GND1
0
Ground.
4
N.C.
No connection.
5
CDMAIN
1.9
7
CDMAINX
1.9
12
BP1
1.9
13
BP2
1.9
14
GND2
0
15
V
CC
2
3.6
16
N.C.
6
8
9
10
11
N.C.
Differential input pin for CDMA
transmit IF signal.
No connection.
Connected to GND with
capacitor 0.01F.
Ground for output stage.
Positive power supply for
output stage.
No connection.
17
OUT
19
OUTX
Differential output pins for
transmit IF signal.
Open collector output.
6k
6k
20k
20k
3k
3k
5
7
12
13
V
CC
1
GND1
V
CC
2
GND2
17
19
200
200
4k
4k
5
CXA3002N
Pin
No.
Symbol
Pin voltage
Typ. (V)
Equivalent circuit
Description
18
20
21
22
N.C.
No connection.
23
GCTL
Gain control pin with a ripple
filter.
24
PSV
Power save function pin.
High: Active
Low: Power save
V
CC
1
GND1
23
8k
8k
6k
6k
V
CC
1
GND1
24
6
CXA3002N
Electrical Characteristics
DC characteristics
(V
CC
= 3.6V, Ta = 25C)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Current Consumption 1
Current Consumption 2
Current Consumption 3
Current Consumption 4
Current Consumption 5
Current Consumption 6
Current Consumption 7
Current Consumption 8
Current Consumption 9
Input current pin 23H
Input current pin 23L
Input current pin 24H
Input current pin 24L
PSV high voltage
PSV low voltage
I
CC
1
I
CC
2
I
CC
3
I
CC
4
I
CC
5
I
CC
6
I
CC
7
I
CC
8
I
CC
9
I
GCTL H
I
GCTL L
I
PSVH
I
PSVL
V
PSH
V
PSL
Gain = MAX., Pin 2
Gain = MAX., Pin 15
Gain = MAX., Pin 17 + Pin 19
Gain = MIN., Pin 2
Gain = MIN., Pin15
Gain = MIN., Pin 17 + Pin 19
V
PSV
= 0.5V, Pin 2
V
PSV
= 0.5V, Pin 15
V
PSV
= 0.5V, Pin 17 + Pin 19
V
GCTL
= 3V
V
GCTL
= 0.5V
V
PSV
= 3V
V
PSV
= 0.5V
Pin 24
4.1
3.2
5
4.2
8.0
0.2
10
10
3
5.7
4.4
7
5.8
11.1
0.3
7.3
5.6
9
7.4
14.2
0.4
1
1
1
10
10
0.5
mA
A
V
AC characteristics
(V
CC
= 3.6V, Ta = 25C)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Operating frequency range
Gain MAX.
Gain center
Gain MIN.
Gain slope
Input level
3rd order intercept
point
Noise Figure
F
R
G
2.7
G
1.5
G
0.3
G
CLIN
IIP
3
NF
V
GCTL
= 2.7V
V
GCTL
= 1.5V
V
GCTL
= 0.3V
V
GCTL
= 1 to 2V
G = 35dB
F
1
= 131.38MHz
F
2
= 132.38MHz
Measure to 130.38MHz
G = 35dB
Used 1MHz BPF
Measure to 130.38MHz
10
38.5
10
58
30
42.5
5
58
61
26
10
200
0
52
64
14
MHz
dB
dB/V
dBm
dB
Adjust GCTL voltage, and set the overall gain to 35dB.
7
CXA3002N
Measurement Circuit
1000p
1000p
1k
10k
10k
560n
1 : 3
CDMA
INPUT
0.01
V
2
1k
0.01
0.01
V
24
V
23
1k
9 : 2
OUTPUT
0.01
V
15
0.01
1k
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
NC
PSV
BP1
BP2
V
CC
1
GND1
NC
CDMAIN
NC
CDMAINX
NC
NC
NC
NC
GCTL
NC
NC
NC
OUTX
NC
OUT
NC
V
CC
2
GND2
2.2k
430n
V
13
A
15
A
23
A
24
A
2
V
5
V
7
V
12
V
17
+
19
A
17 + 19
8
CXA3002N
Application Circuit
TX IF
INPUT
0.01
1k
1000p
1000p
0.01
0.1
1
0.01
Bandpass
Filter
Gain Control
V
CC
TX IF
OUTPUT
Active
Sleep
0.1
0.01
1000p
1000p
0.01
CXA3002
13
14
15
16
17
18
19
20
21
22
23
24
2
3
4
5
6
7
8
9
10
11
12
1
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.
Must be adjusting values to result a best impedance matching between BPF filter and this IC.
9
CXA3002N
Design Reference Values
Single ended measurement
(V
CC
= 3.6V, Ta = 25C)
Item
Symbol
Conditions
Typ.
Unit
Input resistance
Input capacitance
Output resistance
Output capacitance
R
IN
C
IN
R
OUT
C
OUT
f = 130.38MHz, V
GCTL
= 1.5V
1.9
4
1.6
5
k
pF
k
pF
Notes on Operation
1) This IC is a wideband amplifier with wide gain control range. Separate Pin 3 (GND1) and Pin 14 (GND2) to
prevent interference between input and output. Furthermore, the decoupling capacitors between Pins 2
and 3, Pins 14 and 15 should be as close to the IC as possible.
2) This IC assumes the excellent characteristics when the differential input impedance between Pins 5 and 7
is 500
, and the differential output impedance between Pins 17 and 19 is 1k
. Refer to the Measurement
Circuit for the external element settings, etc.
3) Connect the capacitors, which are connected to Pins 12 and 13, to Pin 14 (GND2).
4) Pay attention to handling this IC because its electrostatic discharge strength is weak.
10
CXA3002N
Sensitivity
V
CC
= 3.6V
Power gain [dB]
V
GCTL
[V]
0.5
60
0
1
1.5
2
2.5
3
3.5
40
20
0
20
40
60
V
CC
= 3.6V
IIP3
60
IIP3 [dBm]
Power gain [dB]
40
60
0
20
40
20
50
40
30
20
10
0
60
T = 40deg
T = 25deg
T = 85deg
T = 40deg
T = 25deg
T = 85deg
11
CXA3002N
V
CC
= 3.6V
Noise Figure
0
Noise figure [dB]
Power gain [dB]
40
20
0
20
40
10
20
30
40
50
60
60
Gain Error from Room Temp.
6
4
2
0
2
4
6
Gain error [dB]
Power gain [dB]
60
40
20
0
20
40
60
T = 40deg
T = 25deg
T = 85deg
V
CC
= 3.6V
T = 40deg
T = 85deg
12
CXA3002N
Package Outline
Unit: mm
SONY CODE
EIAJ CODE
JEDEC CODE
SSOP-24P-L01
A SIMILAR TO SSOP024-P-0300
PACKAGE STRUCTURE
PACKAGE MATERIAL
LEAD TREATMENT
LEAD MATERIAL
PACKAGE WEIGHT
42 ALLOY
SOLDER PLATING
EPOXY / PHENOL RESIN
24PIN SSOP (PLASTIC) 275mil
7.8 0.1
24
13
1
12
0.22 0.05
+ 0.1
0.65 0.120.15 0.02
+ 0.05
7.6
0.2
A
1.25 0.1
+ 0.2
0.1 0.1
0.5
0.2
0 to 10
0.10
DETAIL A
NOTE :
NOT INCLUDE MOLD FINS.
5.6
0.1
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