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308MHz/315MHz/418MHz/433.92MHz
Low-Power, FSK Superheterodyne Receiver
DC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, 50 ? system impedance, V AVDD = V DVDD = V HVIN = +2.4V to +3.6V, f RF = 308, 315, 418, and
433.92MHz; T A = -40°C to +125°C, unless otherwise noted. Typical values are at V AVDD = V DVDD = V HVIN = +3.0V,
f RF = 433.92MHz, P RFIN ≤ -80dBm, T A = +25°C, unless otherwise noted.)
PARAMETER
Input High Pulldown Current
Input Low-Leakage Current
Output High Voltage
Output Low Voltage
SYMBOL
I IH
I IL
V OH
V OL
CONDITIONS
V HVIN = +3.6V
V HVIN = +5.5V
V HVIN = +3.6V
V HVIN = +5.5V
I SOURCE = 500μA
I SINK = 500μA
MIN
TYP
8
20
<1
<1
V HVIN - 0.4
0.4
MAX
15
40
1
1
UNITS
μA
μA
V
V
VOLTAGE REGULATOR
Output Voltage
V REG
2.5
3.0
3.5
V
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, 50 ? system impedance, V AVDD = V DVDD = V HVIN = +2.4V to +3.6V, f RF = 308, 315, 418, and
433.92MHz; T A = -40°C to +125°C, unless otherwise noted. Typical values are at V AVDD = V DVDD = V HVIN = +3.0V,
f RF = 433.92MHz, P RFIN ≤ -80dBm, T A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Input Level
0
dBm
315MHz
Operating, 1x I LNA
-107
Sensitivity (Note 1)
Receiver Image Rejection
setting
434MHz
setting
Operating, 2x I LNA
Operating, 1x I LNA
Operating, 2x I LNA
-110
-106
-109
45
dBm
dB
LNA/MIXER
Input Impedance (Note 2)
Z IN_LNA
Normalized to 2x I LNA 315MHz
50 ? 2x I LNA 433.92MHz
0.94 - j3.2
0.94 - j2.1
1dB Input Compression Point
Input-Referred 3rd-Order Intercept
Point
LO Signal Feedthrough to
Antenna
Mixer Output Impedance
P 1dB
IIP3
Zout MIX
1x I LNA 315MHz
2x I LNA 315MHz
1x I LNA 315MHz
2x I LNA 315MHz
-47
-52
-37
-42
-80
330
dBm
dBm
dBm
?
Voltage Conversion Gain
330 ? IF filter
load
(Note 3)
1x I LNA 315MHz
2x I LNA 315MHz
1x I LNA 433.92MHz
52
57
47
dB
IF LIMITING AMPLIFIER
2x I LNA 433.92MHz
52
Input Impedance
-3dB Bandwidth
Z IN_IF
330
10
?
MHz
_______________________________________________________________________________________
3
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