11-240
RF2948B
Rev A6 040930
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage
-0.5 to +3.6
VDC
Control Voltages
-0.5 to +3.6
VDC
Input RF Level
+12
dBm
LO Input Levels
+5
dBm
Operating Ambient Temperature
-40 to +85
°C
Storage Temperature
-40 to +150
°C
MSL JEDEC level 3 at 240oC
Parameter
Specification
Unit
Condition
Min.
Typ.
Max.
Overall Receiver
T=25 °C, VCC=3.0V, Freq=374MHz,
RBW=10kΩ
RX Frequency Range
45
374
500
MHz
Cascaded Voltage Gain
65
76
dB
RX VGC=1.2V
03
dB
RX VGC=2.0V
Cascaded Noise Figure
5.5
35.0
dB
Varies with gain.
Cascaded Input IP3
50
dB
µVV
GC <1.2 V
Cascaded Input IP3
115
dB
µVV
GC>2.0 V
IF LO Leakage
-68
dBm
f=374MHz, LO Power=-10dBm
Quadrature Phase Variation
0
±3
°
With expected LO amplitude and harmonic
content.
Quadrature Amplitude Variation
0
+1dB
Output P1dB
1.2
VPP
1.4<RX VGC<1.8V
Distortion
2
%
At 0.70VPP output level.
IF AMP and Quad Demod
Gain
4.5
7.5
dB
VGC=1.95V=min gain
65
70
VGC=1.25V max gain
Noise Figure
5.5
dB
Single Sideband, max gain.
IF Input Impedance
515-j994
Ω
Single-ended. 374MHz
RX Baseband Amplifiers
THD
2
%
At 0.707VP-P output level
Output Voltage
700
mVPP
RL>5kΩ, CL<15pF
DC Output Voltage
VREF1-15
VREF1
VREF1+15
mV
RX Baseband Filters
Baseband Filter 3dB Bandwidth
1
10
35
MHz
5th order Bessel LPF.
Set by BW CTRL (RBW)
Passband Ripple
0.1
dB
Baseband Filter 3dB
Frequency Accuracy
±10
±30
%
Group Delay
15
ns
At 35MHz, increasing as bandwidth
decreases.
Group Delay
400
ns
At 2MHz.
Baseband Filter
Ultimate Rejection
>80
dB
Output Impedance
20
Ω
Designed to drive>5k
Ω, <15pF load.
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
Refer to “Handling of PSOP and PSSOP Products” on page 16-15 for
special handling information.
Refer to “Soldering Specifications” on page 16-13 for special solder-
ing information.
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