RF250-32 Ver la hoja de datos (PDF) - Conexant Systems

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RF250-32

Rx ASIC for CDMA, AMPS, and PCS Applications

Conexant Systems 

RF250

Rx ASIC

Table 5. RF250 Rx ASIC Electrical Specifications (3 of 3)

TA = 25° C, VCC = 3.3 V, PLO = –10 dBm

Parameter

Symbol

Test Condition

Rx VGA - I/Q Demodulator (continued)

Output level:

CDMA

AMPS

Maximum output level

Gain variation over frequency:

CDMA (1-630 kHz)

AMPS (0.1-12.2 kHz)

Output impedance (differential)

I+, I–, and Q+, Q– DC offset

I/Q gain mismatch

I/Q phase mismatch

I to Q DC offset

Total supply current (includes I/Q mixers, LO

buffers, and dividers)

Oscillator

Frequency range

Phase noise (fc = 200 MHz, unloaded Q = 20) @

100 kHz offset

Second harmonic distortion (application dependent)

Output level to PLL (differential)

Output impedance to PLL (differential)

Reverse isolation

Total supply current

Min Typical Max Units

2.75

5.5

1.4

mVrms

mVrms

Vp-p

0.1

0.3 dB

0.1

0.3 dB

500

6

mVrms

0.2

0.3 dB

2

4

deg

30 mV

15

mA

100

640 MHz

–117

dBc/Hz

–30

–26 dBc

300

mVp-p

300

Ω

–30

–40 dB

5

mA

101251A

Conexant Systems, Inc.

9

August 24, 2000

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