CX74001 datasheet(10/23 Pages) SKYWORKS

10 / 23 page

CX74001

Rx ASIC for CDMA, AMPS, and PCS Applications

Skyworks

101134A

Proprietary Information and Specifications are Subject to Change

March 5, 2002

Table 4. CX74001 Rx ASIC Electrical Specifications (3 of 3)

(TA = 25

°°°° C, VCC = 3.0 V)

Parameter

Symbol

Test Condition

Minimum

Typical

Maximum

Units

VGA and IQ Cascaded Performance

Input Frequency Range (-2 dB)

300

MHz

Input impedance:

CDMA (differential)

AMPS(single-ended)

PCS (differential)

1000

Ω

Cascaded Noise Figure:

@ Max Gain

@ Min Gain

VGA control range

0.5

2.5

Gain:

Minimum (AMPS)

Minimum (CDMA)

Minimum (PCS)

Maximum (AMPS)

Maximum (CDMA)

Maximum (PCS)

–35

–43

–47.5

–30

–38

–42.5

–25

–33

–37.5

Gain Slope

dB/V

Gain variation over Signal Bandwidth:

CDMA and PCS (1 kHz-630 kHz)

AMPS (100 Hz-15 kHz)

0.2

0.55

Gain variation over temperature and supply

±2

Input 1 db compression at minimum gain

–10

–8

dBm

OIP3 @ greater than 30 dB gain

5.5

dBm

Output (1dB compression)

1.25

Vppd

Output Common Mode Voltage Variation Over Supply

0.9

1.8

I-Ib and Q-Qb DC Offset

I-Q Gain Mismatch

0.2

0.3

I-Q Phase Mismatch

degrees

I-Q DC Offset

Total supply current (VGA, IQ, dividers)

CDMA / PCS

AMPS

10.5

Oscillator

Frequency range

100

600

MHz

Phase Noise (fc = 200 MHz, unloaded Q = 20) @ 100 kHz

offset

–115

–117

dBc/Hz

Second harmonic distortion (application dependent)

–25

–30

dBc

Total Supply Current

Buffered VCO Output

Frequency range

100

600

MHz

Output Level (peak differential)

120

150

Output impedance (differential)

300

Ω

Reverse isolation

–30

–40

Total supply current

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