RF212 datasheet(4/9 Pages) ETC

4 / 9 page

RF212

Image-Reject Front End

Conexant

100780D

May 24, 2000

Proprietary Information and Specifications are Subject to Change

Table 5. Absolute Maximum Ratings

Parameter

Minimum

Maximum

Units

Storage Temperature

−40

+125

°C

Supply Voltage (VCC)

−0.3

+3.6

Input Voltage Range

−0.3

Vcc

Table 6. RF212 Recommended Operating Conditions

Parameter

Min

Typical

Max

Units

Supply Voltage

2.7

3.0

3.6

Operating Temperature

−30

+25

+85

°C

Table 7. RF212 Electrical Specifications (1 of 3)

(TA = 25

°°°°C, Vcc = 2.7 V, fIF = 400 MHz, Plo = −−−−10 dBm)

Parameter

Symbol

Test Condition

Min

Typical

Max

Units

EGSM900 Mode

Supply current::

Enable mode

Sleep mode

ENA = 1

ENA = 0

µA

RF Input frequency

925

960

MHz

IF frequency

fIF

350

400

450

MHz

LO to RF input isolation

Input impedance

Ω

Power gain (for 2 k

Ω differential output impedance):

High gain mode

Low gain mode 1

Low gain mode 2

Gain step 1

Gain step 2

Temperature coefficient

Gain variation versus frequency

GMAX1

GMIN1

GMIN2

GSTEP1

GSTEP2

FTC1

GAINSEL = 0

GAINSEL = 1, STEPSEL = 1

GAINSEL = 1, STEPSEL = 0

–24

–14

–22

–12

–0.02

–20

–10

0.8

dB/

°C

Noise figure:

High gain

Low gain mode 1

Low gain mode 2

GAINSEL = 0

GAINSEL = 1, STEPSEL = 1

GAINSEL = 1, STEPSEL = 0

2.3

3.5

Noise figure degradation with blocker:

High gain

−22 dBm blocker,

GAINSEL = 0 (Note 1)

1.6

Input 1 dB compression point

IP1DB

high gain mode

low gain mode

−22

−18

–20

–13

dBm

Input third order intercept point

IP3

−12

dBm

Differential IF shunt output resistance

Ω

Image rejection:

fIF = 400 MHz

fIF = 350 or 450 MHz

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