MAX7042 Maxim Integrated Products, MAX7042 Datasheet - Page 7

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

(Typical Application Circuit, V
deviation = ±50kHz, BER = 0.2%, T
Low-Power, FSK Superheterodyne Receiver
_______________________________________________________________________________________
90
80
70
60
50
40
30
20
1
433.92MHz
DD
IMPEDANCE
vs. INDUCTIVE DEGENERATION
IMAGINARY
308MHz/315MHz/418MHz/433.92MHz
f
INDUCTIVE DEGENERATION (nH)
RF
= 3.0V, f
S11 SMITH PLOT OF R
= 433.92MHz
REAL IMPEDANCE
INPUT IMPEDANCE
A
= +25°C, unless otherwise noted.)
RF
10
= 433.92MHz, IF BW = 280kHz, data rate = 4kbps Manchester encoded, frequency
Typical Operating Characteristics (continued)
FIN
MAX7042 toc21
100
-100
-110
-120
-130
-140
-100
-110
-120
-130
-70
-80
-90
70
60
50
40
30
20
100
1
f
f
RF
RF
f
RF
vs. INDUCTIVE DEGENERATION
= 433.92MHz
= 315MHz
= 315MHz
INDUCTIVE DEGENERATION (nH)
1k
vs. OFFSET FREQUENCY
REAL IMPEDANCE
INPUT IMPEDANCE
OFFSET FREQUENCY (Hz)
PHASE NOISE
10k
IMPEDANCE
10
IMAGINARY
100k
1M
MAX7042 toc20
www.DataSheet4U.com
100
10M
-150
-160
-170
-180
-190
-200
7