Datasheet

MAX7042
308MHz/315MHz/418MHz/433.92MHz
Low-Power, FSK Superheterodyne Receiver
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
( Typical Application Circuit , 50Ω 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
V
HVIN
= +3.6V 8 15
Input High Pulldown Current I
IH
V
HVIN
= +5.5V 20 40
µA
V
HVIN
= +3.6V < 1 1
Input Low-Leakage Current I
IL
V
HVIN
= +5.5V < 1 1
µA
Output High Voltage V
OH
I
SOURCE
= 500µA V
HVIN
- 0.4 V
Output Low Voltage V
OL
I
SINK
= 500µA 0.4 V
VOLTAGE REGULATOR
Output Voltage V
REG
2.5 3.0 3.5 V
AC ELECTRICAL CHARACTERISTICS
( Typical Application Circuit , 50Ω 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
Operating, 1x I
LNA
-107
315MHz
setting
Operating, 2x I
LNA
-110
Operating, 1x I
LNA
-106
Sensitivity (Note 1)
434MHz
setting
Operating, 2x I
LNA
-109
dBm
Receiver Image Rejection 45 dB
LNA/MIXER
2x I
LNA
315MHz 0.94 - j3.2
Input Impedance (Note 2) Z
IN_LNA
Normalized to
50Ω
2x I
LNA
433.92MHz 0.94 - j2.1
1x I
LNA
315MHz -47
1dB Input Compression Point P
1dB
2x I
LNA
315MHz -52
dBm
1x I
LNA
315MHz -37
Input-Referred 3rd-Order Intercept
Point
IIP3
2x I
LNA
315MHz -42
dBm
LO Signal Feedthrough to
Antenna
-80 dBm
Mixer Output Impedance Zout
MIX
330 Ω
1x I
LNA
315MHz 52
2x I
LNA
315MHz 57
1x I
LNA
433.92MHz 47
Voltage Conversion Gain
330Ω IF filter
load
(Note 3)
2x I
LNA
433.92MHz 52
dB
IF LIMITING AMPLIFIER
Input Impedance Z
IN_IF
330 Ω
-3dB Bandwidth 10 MHz