Datasheet

315MHz/433MHz ASK Superheterodyne
Receiver with Extended Dynamic Range
DC ELECTRICAL CHARACTERISTICS (5.0V OPERATION)
( Typical Application Circuit , V
DD
= 4.5V to 5.5V, no RF signal applied, T
A
= -40°C to +85°C, unless otherwise noted. Typical values
are at V
DD
= 5.0V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
DD
5.0V nominal supply 4.5 5.0 5.5 V
f
RF
= 315MHz 5.2 6.04
Supply Current I
DD
V
P WRDN
= V
DD
f
RF
= 433MHz 5.7 6.76
mA
f
RF
= 315MHz 2.3
Shutdown Supply Current I
PWRDN
V
P WRDN
= 0V,
V
XTALSEL
= 0V
f
RF
= 433MHz 2.8 6.2
µA
Input Voltage Low V
IL
0.4 V
Input Voltage High V
IH
V
DD
- 0.4 V
Input Logic Current High I
IH
10 µA
f
RF
= 433MHz, V
IRSEL
= V
DD
V
DD
- 0.4
f
RF
= 375MHz, V
IRSEL
= V
DD
/2 1.1 V
DD
- 1.5Image Reject Select (Note 2)
f
RF
= 315MHz, V
IRSEL
= 0V 0.4
V
DATAOUT Voltage Output Low V
OL
0.4 V
DATAOUT Voltage Output High V
OH
R
L
= 5kΩ
V
DD
- 0.4 V
AC ELECTRICAL CHARACTERISTICS
( Typical Application Circuit , V
DD
= 3.0V to 3.6V, all RF inputs are referenced to 50Ω, f
RF
= 315MHz, T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at V
DD
= 3.3V and T
A
= +25°C.) (Note 1).
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
GENERAL CHARACTERISTICS
Startup Time t
ON
Time for valid signal detection after
V
P WRDN
= V
OH
250 µs
Receiver Input Frequency f
RF
300 450 MHz
Maximum Receiver Input Level P
RFIN_MAX
Modulation depth > 18dB 0 dBm
Sensitivity (Note 3) P
RFIN_MIN
Peak power level -114 dBm
8dB
AGC Hysteresis LNA gain from low to high
150 ms
LNA IN HIGH-GAIN MODE
Power Gain 16 dB
f
RF
= 433MHz 1 - j3.4
f
RF
= 375MHz 1 - j3.9Input Impedance (Note 4) Z
IN_LNA
Normalized to
50Ω
f
RF
= 315MHz 1 - j4.7
1dB Compression Point P1dB
LNA
-22 dBm
Input-Referred 3rd-Order
Intercept
IIP3
LNA
-12 dBm
MAX1473
Maxim Integrated
3