MAX7034 查看數據表（PDF） - Maxim Integrated
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MAX7034 Datasheet PDF : 14 Pages
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MAX7034
315MHz/434MHz ASK Superheterodyne
Receiver
Typical Operating Characteristics (continued)
(Typical Application Circuit, VDD5 = +5.0V, fRF = 433.92MHz, TA = +25°C, unless otherwise noted.)
5
0
-5
-10
-15
-20
-25
-30
1
NORMALIZED IF GAIN
vs. IF FREQUENCY
S11 MAGNITUDE PLOT OF RFIN
vs. FREQUENCY
50
40
30
20
10
0
-10
-20
315MHz
-24.1dB
-30
-40
10
IF FREQUENCY (MHz)
-50
100
200 230 260 290 320 350 380 410 440 470 500
FREQUENCY (MHz)
S11 SMITH CHART PLOT OF RFIN
MAX7034 toc12
500MHz
WITH INPUT
MATCHING
315MHz
200MHz
PHASE NOISE
vs. OFFSET FREQUENCY
0
fRF = 315MHz
-20
-40
-60
-80
-100
-120
-140
10
100 1k 10k 100k 1M 10M
OFFSET FREQUENCY (Hz)
PHASE NOISE
vs. OFFSET FREQUENCY
0
fRF = 433.92MHz
-20
-40
-60
-80
-100
-120
-140
10 100 1k 10k 100k 1M 10M
OFFSET FREQUENCY (Hz)
Pin Description
PIN
NAME
1
XTAL1
2, 7
AVDD
3
LNAIN
Crystal Input 1
FUNCTION
Positive Analog Supply Voltage. For +5V operation, pin 2 is the output of an on-chip +3.4V low-
dropout regulator, and should be bypassed to AGND with a 0.1µF capacitor as close as possible to
the pin. Pin 7 must be externally connected to the supply from pin 2, and bypassed to AGND with a
0.01µF capacitor as close as possible to the pin (see the Voltage Regulator section and the Typical
Application Circuit).
Low-Noise Amplifier Input. See the Low-Noise Amplifier section.
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