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CX74001
(Rev.:2000)

Rx ASIC for CDMA, AMPS, and PCS Applications

Conexant Systems 

Rx ASIC

CX74001

Table 8. CX74001 Rx ASIC Electrical Specifications (3 of 3)

TA = 25° C, VCC = 3.0 V

Parameter

Symbol

Test Condition

Input Frequency Range (-2 dB)

Input impedance:

CDMA (differential)

AMPS(single-ended)

PCS (differential)

Cascaded Noise Figure:

@ Max Gain

Min Gain

VGA control range

Gain:

Minimum

Maximum (CDMA and PCS)

Maximum (AMPS)

Gain Slope

VGA and IQ Cascaded Performance

Gain Slope Linearity (over any 6 dB segment)

Gain variation over Signal Bandwidth:

CDMA and PCS (1 kHz-630 kHz)

AMPS (100 Hz-15 kHz)

Gain variation over temperature and supply

Input 1 db compression at minimum gain

OIP3 @ greater than 30 dB gain

Output Level:

CDMA

AMPS

Maximum Output

Output Common Mode Voltage Variation Over Supply

I-Ib and Q-Qb DC Offset

I-Q Gain Mismatch

I-Q Phase Mismatch

I-Q DC Offset

Total supply current (VGA, IQ, dividers)

CDMA / PCS

AMPS

Frequency range

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

offset

Second harmonic distortion (application dependent)

Total Supply Current

Oscillator

Frequency range

Output Level (peak differential)

Output impedance (differential)

Buffered VCO Output

Reverse isolation

Total supply current

Min Typical Max

50

300

1000

1000

1000

5

50

0.5

2.5

-36

57

63

45

±3

0.2

0.55

0.2

0.55

±2

–10

5.5

6

2. 5

2.75

1.25

0.9

1.8

6

0.2

0.3

2

4

30

10.5

14

100

600

–117

–30

6

100

600

150

300

–30

–40

3

Units

MHz

Ohms

Ohms

Ohms

dB

dB

Volts

dB

dB

dB

dB/V

dB

dB

dB

dB

dBm

dBm

mVrms

mVrms

Vppd

V

mV

dB

degree

mV

mA

mA

MHz

dBc/Hz

dBc

mA

MHz

mV

Ohms

dB

mA

101134A

Conexant - Preliminary

11

October 20, 2000

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