CX74001 View Datasheet(PDF) - Skyworks Solutions
Part Name
Description
Manufacturer
CX74001 Datasheet PDF : 23 Pages
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Rx ASIC for CDMA, AMPS, and PCS Applications
Pin #
Name
16 PLL+
Table 1. CX74001 Pin Assignments and Signal Descriptions (2 of 4)
Differential buffered VCO output.
Description
CX74001
Equivalent Circuit
Vcc
Vcc
–
+
17 PLL–
18 SIF
19 I–
20 I+
21 Q+
22 Q–
23 SLEEP
24 VGA_CONTROL
Differential buffered VCO output.
Digital control signal for SIF selection: 1 = SIF, 0 = Normal.
I channel differential output.
I channel differential output.
Q channel differential output.
Q channel differential output.
Digital signal used to activate the receiver ASIC: 0 = sleep, 1= enable.
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
101134A
Skyworks
5
March 5, 2002
Proprietary Information and Specifications are Subject to Change
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