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Sony Semiconductor Electronic Components Datasheet

CXA1852N Datasheet

Quadrature Modulator for 900 MHz-Band Mobile Communications

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CXA1852N
Quadrature Modulator for 900 MHz-Band Mobile Communications
For the availability of this product, please contact the sales office.
Description
The CXA1852N is an IC package that combines a
π/2 phase shifter with a quadrature modulator.
This is suitable for 900 MHz digital cordless
telephone (CT2) and digital cellular.
20 pin SSOP (Plastic)
Features
Quadrature modulator IC has a built-in π/2 phase
shifter.
Local frequency = 300.1 MHz (max.); I&Q = 36
kHz (max.)
Small phase error
Operating voltage range: 2.7 to 5 V
Power saving function
20-pin SSOP package used for set size reduction
Applications
CT2 digital cordless telephone
Digital cellular
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta=25 °C)
Supply voltage
VCC
6
V
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –65 to +150 °C
Allowable power dissipation
PD
530
mW
When mounted on a 50 × 50 × 1.6 mm copper-
foiled glass epoxy board
Recommended Operating Conditions
Supply voltage
VCC 2.7±5.0
V
Block Diagram and Pin Configuration
20 19 18 17 16 15 14 13 12 11
LPF
F/F LPF
MIXER
REGULATOR
ADDER
-AMP
1 2 3 4 5 6 7 8 9 10
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—
E93517A5Y-TE


Sony Semiconductor Electronic Components Datasheet

CXA1852N Datasheet

Quadrature Modulator for 900 MHz-Band Mobile Communications

No Preview Available !

CXA1852N
Pin Description
Pin
Symbol
No.
Typical
pin voltage (V)
1 LOCAL IN
0
Equivalent circuit
12
Description
Local input pin. The internal resistor
provides 50 matching.
2 LOCAL IN
2.0
Bias pin for the local input amplifier.
Ground this pin via a capacitor.
3 GND
0
4 Q-BIAS
0.175
5 Q-BIAS
0.175
6 GND
7 Q-INPU
0
1.85 V to
0.85 V
8 Q-INPUT
1.85 V to
0.85 V
9 GND
0
5
7
8
Local leak level adjustment pins.
Normally ground these pins via 1 k
resistors.
4
Q signal input pin. The input
impedance is 500 kor more.
(Only DC signals can be normally
input at the VCC/2 DC Bias.)
Q signal input pin. The input
impedance is 500kor more.
(Signals of up to 1 Vp-p can be input
at the VCC/2 DC Bias.)
10 IF OUTPUT
1.4
IF output pin. (An output impedance
of 50 is provided by the emitter
10 follower.)
—2—


Part Number CXA1852N
Description Quadrature Modulator for 900 MHz-Band Mobile Communications
Maker Sony Corporation
Total Page 10 Pages
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