參數資料
型號: CX74040
英文描述: Transmitter for WCDMA and UMTS Applications|Handset RF ICs:WCDMA
中文描述: 發(fā)射機的WCDMA和UMTS應用|手機射頻集成電路:WCDMA的
文件頁數: 5/23頁
文件大?。?/td> 664K
代理商: CX74040
Rx ASIC for CDMA, AMPS, and PCS Applications
CX74001
101134A
March 5, 2002
Skyworks
5
Proprietary Information and Specifications are Subject to Change
Table 1. CX74001 Pin Assignments and Signal Descriptions (2 of 4)
Pin #
Name
Description
Equivalent Circuit
16
PLL+
Differential buffered VCO output.
+
Vcc
Vcc
17
PLL–
Differential buffered VCO output.
18
SIF
Digital control signal for SIF selection: 1 = SIF, 0 = Normal.
19
I–
I channel differential output.
20
I+
I channel differential output.
21
Q+
Q channel differential output.
22
Q–
Q channel differential output.
23
SLEEP
Digital signal used to activate the receiver ASIC: 0 = sleep, 1= enable.
24
VGA_CONTROL
Analog gain control of the VGA. Typical 0.5 to 2.5 V to control VGA dynamic range of greater
than 90dB.
25
VCC_IF
Voltage supply to VGA from I/Q demodulator stages and logic blocks. Supply should be
bypassed to prevent signal modulation to the supply line.
26
CDMA_VGA_IN–
CDMA differential VGA input
27
CDMA_VGA_IN+
CDMA differential VGA input
+
28
AMPS_VGA_IN
AMPS VGA input
29
PCS_VGA_IN–
PCS differential VGA input
30
PCS_VGA_IN+
PCS differential VGA input
+
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