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RF2498PCBA Fiches technique(PDF) 7 Page - RF Micro Devices

No de pièce RF2498PCBA
Description  TRI-BAND/QUAD-MODE CDMA/GPS LOW NOISE AMPLIFIER/MIXER
PDF  20 Pages
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Fabricant  RFMD [RF Micro Devices]
Site Internet  http://www.rfmd.com
Logo RFMD - RF Micro Devices

RF2498PCBA Fiches technique(HTML) 7 Page - RF Micro Devices

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8-307
RF2498
Rev A4 070308
Cascaded Performance (Typical Values for VCC=2.75V)
NOTE: All total current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
CELL CDMA
LNA ON
LNA OFF
LNA ON
LNA OFF
Parameter
LNA at Max IIP3, IPSET=1
Mixer Preamp On
Mixer Preamp Off
Cascaded:
Gain (dB)
25.0
7.5
15.0
-2.5
Noise Figure (dB)
2.1
13.0
4.5
19.5
Input IP3 (dBm)
-8.5
+8.9
+0.6
+17.6
LO to IF Isolation (dB)
30
30
30
30
IF1 to RF Isolation (dB)
40
40
40
40
IF2 to RF Isolation (dB)
40
40
40
40
LO to LNA IN Isolation (dB)
45
45
45
45
Total Current (mA)
*27.0
20.5
*22.0
15.5
NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off.
Numbers represent high linearity LNA bias setting IPSET=1.
*For Paging mode set IPSET=0. Total current reduced 2mA.
FM/JCDMA
Parameter
LNA ON
LNA OFF
LNA ON
LNA OFF
Mixer Preamp On
Mixer Preamp Off
Cascaded:
Gain (dB)
24.5
7.5
14.5
-2.5
Noise Figure (dB)
2.1
13.0
4.8
19.5
Input IP3 (dBm)
-8.1
+8.9
+1.6
+18.4
LO to IF Isolation (dB)
30
30
30
30
IF1 to RF Isolation (dB)
40
40
40
40
IF2 to RF Isolation (dB)
40
40
40
40
LO to LNA IN Isolation (dB)
45
45
45
45
Total Current (mA)
25.0
20.5
20.0
15.5
NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off.
Numbers represent low current LNA bias setting IPSET=0.
PCS CDMA
LNA ON
LNA OFF
LNA ON
LNA OFF
Parameter
LNA at Max IIP3, IPSET=1
Mixer Preamp ON
Mixer Preamp OFF
Cascaded:
Gain (dB)
26.5
7
17.0
-2.5
Noise Figure (dB)
2.2
14
5.0
22
Input IP3 (dBm)
-7.5
+11.8
+0.2
+19.0
LO to IF Isolation (dB)
40
40
40
40
IF1 to RF Isolation (dB)
40
40
40
40
IF2 to RF Isolation (dB)
40
40
40
40
LO to LNA IN Isolation (dB)
40
40
40
40
Total Current (mA)
*27.5
21.0
*22.5
16.0
NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off.
Numbers represent high linearity LNA bias setting IPSET=1.
*For Paging mode set IPSET=0. Total current reduced 2mA.



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