MAX7042 Maxim Integrated Products, MAX7042 Datasheet - Page 4

• Manufacturer Part Number: MAX7042
• Description: 308MHz/315MHz/418MHz/433.92MHz Low-Power FSK Superheterodyne Receiver
• Manufacturer: Maxim Integrated Products

308MHz/315MHz/418MHz/433.92MHz
Low-Power, FSK Superheterodyne Receiver
AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, 50Ω system impedance, AV
T
P
Note 1: 0.2% BER, 4kbps, Manchester coded, 280kHz IF BW, ±50kHz frequency deviation.
Note 2: Input impedance is measured at the LNAIN pin 2x I
Note 3: The voltage conversion gain is measured with the LNA input matching inductor, the degeneration inductor, and the
(Typical Application Circuit, V
deviation = ±50kHz, BER = 0.2%, T
4
Operating Frequency
RSSI Slope
FSK DEMODULATOR
Conversion Gain
ANALOG BASEBAND
M axi m um P eak- D etector Band w i d th
Maximum Data-Filter Bandwidth
Maximum Data-Slicer Bandwidth
Maximum Data Rate
CRYSTAL OSCILLATOR
Crystal Frequency
Crystal Load Capacitance
A
RFIN
7.2
7.0
6.8
6.6
6.4
6.2
6.0
5.8
5.6
5.4
= -40°C to +125°C, unless otherwise noted. Typical values are at AV
_______________________________________________________________________________________
≤ -80dBm, T
2.4
SUPPLY CURRENT vs. SUPPLY VOLTAGE
degeneration from the LNA source to ground. The impedance at 433.92MHz includes a 0nH inductive degeneration con-
nected from the LNA source to ground. The equivalent input circuit is 47Ω in series with 3.2pF at 315MHz and 47Ω in series
with 3.5pF at 433.92MHz.
LNA/mixer resonator in place, and does not include the IF filter insertion loss.
PARAMETER
+85°C
2.7
SUPPLY VOLTAGE (V)
A
+125°C
-40°C
(1x I
= +25°C, unless otherwise noted.)
3.0
LNA
)
+25°C
DD
3.3
= 3.0V, f
A
= +25°C, unless otherwise noted.)
SYMBOL
3.6
BW
BW
f
XTAL
RF
f
IF
DF
DS
= 433.92MHz, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
Manchester coded
NRZ
2.4
SUPPLY CURRENT vs. SUPPLY VOLTAGE
DD
+85°C
2.7
LNA
= DV
CONDITIONS
SUPPLY VOLTAGE (V)
. Note that the impedance at 315MHz includes the 3.9nH inductive
(2x I
DD
+125°C
3.0
= HV
LNA
+25°C
Typical Operating Characteristics
)
-40°C
IN
3.3
= +2.4V to +3.6V, f
DD
3.6
= DV
DD
MIN
1.1
10
7.0
6.8
6.6
6.4
6.2
6.0
5.8
5.6
= HV
300
RF
SUPPLY CURRENT vs. RF FREQUENCY
= 308, 315, 418, and 433.92MHz;
(f
IN
325
RF
TYP
10.7
= +3.0V, f
100
/ 32
4.5
2.1
16
50
50
33
66
- 10.7)
RF FREQUENCY (MHz)
350
www.DataSheet4U.com
(1x I
+125°C
+85°C
-40°C
+25°C
375
LNA
MAX
RF
3.0
21
)
400
= 433.92MHz,
425
mV/kHz
UNITS
mV/dB
MHz
MHz
kHz
kHz
kHz
kHz
pF
450