MAX2309 查看數據表（PDF） - Maxim Integrated
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MAX2309 Datasheet PDF : 20 Pages
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CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
Typical Operating Characteristics
(MAX2306/MAX2308/MAX2309 EV kits, VCC = +2.75V, registers set to default power-up states, fIN = 183.7MHz, fREF = 19.2MHz,
synthesizer locked with passive 3rd-order lead-lag loop filter, SHDN = high, VGC set for +35dB voltage gain, differential output load
= 10kΩ, all power levels referred to 50Ω, TA = +25°C, unless otherwise noted.)
RECEIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
35.00
32.50
30.00
27.50
TA = +85°C
TA = +25°C
25.00
22.50
TA = -40°C
20.00
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
GAIN vs. INPUT FREQUENCY
60
55
VGC = 2.5V
50
45
40
35
30
25
20
15
0
100 200 300 400 500
FREQUENCY (MHz)
NOISE FIGURE vs. GAIN
70
60
50
40
30
20
10
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70
GAIN (dB)
RECEIVE SHUTDOWN CURRENT vs.
SUPPLY VOLTAGE
0.014
0.012
0.010
TA = +85°C
0.008
0.006
TA = +25°C
0.004
0.002
TA = -40°C
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
GAIN vs. BASEBAND FREQUENCY
60.0
59.5
59.0
58.5
58.0
57.5
57.0
56.5
56.0
0 2 4 6 8 10 12 14 16 18 20
FREQUENCY (MHz)
NOISE FIGURE vs. TEMPERATURE
7.4
GAIN = 50dB
7.2
7.0
6.8
6.6
6.4
6.2
6.0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
GAIN vs. VGC
80
60
40
20
0
TA = +25°C
-20 TA = -40°C
-40
TA = +85°C
-60
-80
0.5 1.0 1.5 2.0 2.5 3.0
VGC (V)
THIRD-ORDER INPUT
INTERCEPT vs. GAIN
10
TA = -40°C
0
-10
TA = +85°C
-20
-30
TA = +25°C
-40
-50
-60
-60 -40 -20 0 20 40 60 80
GAIN (dB)
VCO VOLTAGE vs. TIME
MAX2306/8/9 toc09
SHDN
VCO
VOLTAGE
1V/div
LOCK
LOCK TIME
1.83ms
500µs/div
_______________________________________________________________________________________ 5
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