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W3013 반도체 회로 부품 판매점

W3013 Indirect Quadrature Modulator with Gain Control



Agere Systems 로고
Agere Systems
W3013 데이터시트, 핀배열, 회로
Preliminary Data Sheet
November 1998
W3013 Indirect Quadrature Modulator
with Gain Control
Features
n Low-voltage operation: 2.7 V
n High-frequency operation: 2.2 GHz
n High RF output power: –10 dBm
n High-accuracy phase shifter, no trim required
n Low carrier feedthrough: –45 dBc
n Automatic power control (APC) capability
n Low-current sleep mode
n 20-pin TSSOP package
Applications
n North American IS-136
n Japan PDC (RCR STD 27)
n Japan PHS (RCR STD 28)
n GSM 900, 1800, and 1900 MHz
n Narrowband CDMA
n Digital satellite communications
Description
The W3013 is a monolithic integrated circuit that
provides indirect, quadrature modulation of an RF
carrier by I & Q baseband inputs. The function
performed by the W3013 is particularly suited for
handheld digital cellular and digital cordless
telephones that operate between 800 MHz and
2.2 GHz.
The circuit block diagram is shown below. From a
single local-oscillator input (LO1), the phase
shifter produces two LO signals with 90° phase
separation and equal amplitude. The LO signals
are fed to the in-phase (I) and quadrature (Q)
double-balanced mixers. The resulting signals are
summed and fed into an RF mixer where the
frequency can be translated to over 2 GHz.
Outputs between the summer and RF mixer are
available for external filtering. Finally, the signal is
amplified to provide a single-ended output.
The ENB/APC input with a logic low allows the
device to be put into a powerdown mode. Above
the logic low threshold, the device enters a power
control mode that provides a range of desired
output power levels.
LO1
LO1REF
I
I
π/4
Ø
+π/4
Q
Q
EXTERNAL
FILTER
INTERNAL
LOW-PASS
FILTER
RFOUT
RFOUT
POWER
CONTROL
LO2 LO2REF ENAB/APC
Figure 1. Circuit Block Diagram


W3013 데이터시트, 핀배열, 회로
W3013 Indirect Quadrature Modulator
with Gain Control
Pin Information
Preliminary Data Sheet
November 1998
VCC
FILTA
FILTB
I
I
Q
Q
LO1REF
LO1
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
TOP
10 VIEW 11
VCC
RFOUT
GND
GND
ENB/APC
GND
GND
LO2REF
LO2
GND
Figure 2. Pin Diagram
12-2680
Table 1. Pin Descriptions
Pin
1
2, 3
4
5
6
7
8, 9
10, 11, 14,
15, 17, 18
12, 13
16
19
20
Symbol
VCC
FILTA, FILTB
I
I
Q
Q
LO1REF, LO1
GND
LO2, LO2REF
ENB/APC
RFOUT
VCC
Name/Description
Positive Supply Voltage. For low-power/small-signal subcircuits.
Filter. Nodes A & B for parallel resonant LC.
Differential Baseband Input.
Differential Baseband Input (Inverting).
Differential Baseband Input.
Differential Baseband Input (Inverting).
First Local Oscillator Input. Either pin may be directly grounded.
Power Supply Ground.
Second Local Oscillator Input. Either pin may be directly grounded.
Enable/Automatic Power Control.
RF Output.
Positive Supply Voltage. For RF output stage.
2 Lucent Technologies Inc.




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