LTC5598IUF-TRPBF Просмотр технического описания (PDF) - Linear Technology
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LTC5598IUF-TRPBF Datasheet PDF : 16 Pages
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LTC5598
TYPICAL PERFORMANCE CHARACTERISTICS VCC = 5V, EN = 5V, TA = 25ºC, fRF = fLO – fBB, fLO =
450MHz, PLO = 0dBm single-ended, BBPI, BBMI, BBPQ, BBMQ common-mode DC voltage VCMBB = 0.5VDC, I&Q baseband input signal
= 100kHz, 0.8VPP,DIFF, two-tone baseband input signal = 2MHz, 2.1MHz, 0.5VPP,DIFF each tone, I&Q 90° shifted (lower side-band
selection); fNOISE = fLO – 6MHz; unless otherwise noted. (Note 11)
Noise Floor vs RF Frequency
(PLO = 10dBm, No AC Baseband
Input Signal)
–145
–150
5V, 25°C
5.25V, 25°C
4.5V, 25°C
5V, –40°C
5V, 85°C
(NOTE 3)
–155
LO Feedthrough to RF Output
vs LO Frequency for EN = Low
–40
–40°C
–60
–80 PLO = 10dBm
Image Rejection vs LO Frequency
(PLO = 10dBm)
0
–10
C8 = 0
–20
–30
–40
–160
–165
10
100
RF FREQUENCY (MHz)
1000
5598 G19
Noise Floor vs RF Output Power and
Differential LO Input Power
–152
fLO = 140MHz; fBB = 2kHz; CW (NOTE 3)
–154
–156
–158
20dBm
19.3dBm
13.4dBm
10.4dBm
8.4dBm
6.4dBm
–100
–120
PLO = 0dBm
85°C
–140
10
100
LO FREQUENCY (MHz)
1000
5598 G20
Gain Distribution
60
50
40
30
20
85oC
25oC
–40oC
–50
C8 = 470nF
–60
–70
–80
10
100
LO FREQUENCY (MHz)
1000
5598 G20a
Output IP3 Distribution at 25°C
30
25
20
15
10
–160
10
5
–162
–14 –12 –10 –8 –6 –4 –2 0 2 4 6 8
RF OUTPUT POWER (dBm)
5598 G20b
0
–2.4 –2.3 –2.2 –2.1
GAIN (dB)
–2 –1.9
5598 G21
0
24
24.4 24.8 25.2 25.6 26
OIP3 (dBm)
26.4 26.8 27.2
5598 G22
LO Feedthrough Distribution
25
85oC
25oC
20 –40oC
15
10
5
0
–70 –66 –62 –58 –54 –50 –46 –42 –38
LO FEEDTHROUGH (dBm)
5598 G23
Image Rejection Distribution
40
85oC
35
25oC
–40oC
30
25
20
15
10
5
0
–70 –66 –62 –58 –54 –50 –46 –42
IMAGE REJECTION (dBc)
5598 G24
Noise Floor Distribution
70
60
NO RF
50
85oC
25oC
–40oC
40
30
20
10
0
–162.4 –162 –161.6 –161.2 –160.8 –160.4 –160
NOISE FLOOR (dBm/Hz)
5598 G25
5598f
7
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