RF250-32 데이터 시트보기 (PDF) - Conexant Systems

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RF250-32

Rx ASIC for CDMA, AMPS, and PCS Applications

Conexant Systems 

Rx ASIC

RF250

Table 5. RF250 Rx ASIC Electrical Specifications (2 of 3)

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

Parameter

Conversion gain (power)

Single-sideband noise figure

P1dB @ input

IP3 @ input

RF input return loss (1930-1990 MHz)

LO input power level

IF output resistance (differential)

IF frequency range

LO/LNA input isolation

LO/RF input isolation

Total supply current (adjustable)

Frequency range

Input impedance:

CDMA input (differential)

PCS input (differential)

AMPS input (single-ended)

Gain:

Maximum

Minimum

Maximum (AMPS)

Minimum (AMPS)

Gain slope

Gain slope linearity (over any 6 dB segment)

IF amplifier IIP3:

@ Maximum gain (CDMA and PCS mode)

@ maximum gain (AMPS mode)

Input 1 dB compression @ minimum gain

IF amplifier noise figure:

@ Maximum gain

Minimum gain

Symbol

Test Condition

PCS Mixer

Rx VGA - I/Q Demodulator

Min Typical Max Units

10

dB

12

dB

–5

dBm

5

dBm

–15

dB

–10

dBm

1000

Ω

300 MHz

25

dB

20

dB

24

mA

50

300 MHz

1000

Ω

1000

Ω

1000

Ω

53

54

55 dB

–47

–42

–37 dB

61

62

63 dB

–39

–34

–29 dB

45

dB/V

–3

+3 dB

–50

–58

dBm

–10

dBm

5

dB

50

dB

8

Conexant Systems, Inc.

101251A

August 24, 2000

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