FreescaleMCS2e80m0SicYoNnEVdKuctor, Inc.
ELECTRICAL CHARACTERISTICS (continued)
Characteristic
Conditions
Symbol
Min
Typ
Max
LNA + SAW FILTER + MIXER
Conversion Gain [Note 2]
Input @ 282.000 MHz
GC
Output @ 21.400 MHz
–
28.2
–
Zout
Current Consumption of Mixer
CRYSTAL FILTER
Insertion Loss
@ 21.400 MHz
Vreg = 0.980 V
Terminating Impedance
= 1.5 kΩ
Zout
I
–
1620 – j51
–
–
370
–
–
1.0
–
IF RECEIVER MC2800
Input Impedance
Second Local Oscillator Frequency
Startup Time of 2nd LO
@ 21.400 MHz
EN transits from ’0’ to ’1’
Zin
fLO2
–
1090 – j140
–
–
20.95008
–
–
<1.0
–
Current Consumption
OVERALL RECEIVER PERFORMANCE
(a) Phase A Characteristics [Note 3]
RF Input Frequency
Sensitivity
6400/4 Level FSK
1600/2 Level FSK
Co–channel Rejection
VCC = 1.15 V
N – Counter = 28B8(H)
R1 = ’0’
R1 = ’1’
–
1.45
–
–
282.000
–
–
–123
–
–
–123
–
–
–5.0
–
Adjacent Channel Rejection
Low Side
High Side
–
56
–
–
59
–
Image Rejection
First IF
Second IF
Intermodulation Rejection
Low Side
High Side
6400/4 Level FSK
R1 = ’0’
–
56
–
–
51
–
–
52
–
–
52
–
Blocking
@ 1.0 MHz
@ 5.0 MHz
–
73
–
–
78
–
Total Current Consumption
Power Up
Power Down
@ VCC = 1.15 V
@ VCC = 1.15 V
–
4.3
–
–
10
–
NOTES: 1. Output of the LNA is matched to 230 Ω by inserting a 180 Ω resistor in series with its output port.
2. Output of the Mixer is matched to 1.5050 kΩ by inserting a 1500 Ω resistor in series with its output port.
3. The circuit of this test board is the same as the schematic in Figure 2.
Unit
dB
Ω
µA
dB
Ω
MHz
ms
mA
MHz
dBm
dBm
dB
dB
dB
dB
dB
mA
µA
4
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