LT5571 데이터 시트보기 (PDF) - Linear Technology
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LT5571 Datasheet PDF : 16 Pages
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LT5571
TYPICAL PERFORMANCE CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 900MHz,
fRF = 902MHz, PLO = 0dBm. BBPI, BBMI, BBPQ, BBMQ CM input voltage = 0.5VDC, Baseband Input Frequency fBB = 2MHz, I & Q 90°
shifted, without image or LO feedthrough nulling. fRF = fBB + fLO (upper sideband selection). PRF(OUT) = –10dBm (–10dBm/tone for 2-
tone measurements), unless otherwise noted. (Note 3)
Noise Floor vs RF Frequency
–157
fLO = 900MHz (FIXED)
NO BASEBAND SIGNAL
–158
–159
–160
5V, –40°C
5V, 25°C
–161
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–162
550 650 750 850 950 1050 1150 1250
RF FREQUENCY (MHz)
5571 G10
Absolute I/Q Gain Imbalance vs
LO Frequency
0.3
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
0.2
5.5V, 25°C
0.1
0
550 650 750 850 950 1050 1150 1250
LO FREQUENCY (MHz)
5571 G13
Output IP3 vs LO Power
24
22
20
18
5V, –40°C
5V, 25°C
16
5V, 85°C
4.5V, 25°C
14
5.5V, 25°C
12
10
–20 –16 –12 –8 –4
fBB, 1 = 2MHz
fBB, 2 = 2.1MHz
048
LO INPUT POWER (dBm)
5571 G16
Image Rejection vs LO Frequency
–30
5V, –40°C
5V, 25°C
–35
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–40
–45
–50
–55
550 650 750 850 950 1050 1150 1250
LO FREQUENCY (MHz)
5571 G11
Absolute I/Q Phase Imbalance vs
LO Frequency
3
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
2
5.5V, 25°C
1
0
550 650 750 850 950 1050 1150 1250
LO FREQUENCY (MHz)
5571 G14
LO Feedthrough vs LO Power
–38
–40
–42
–44
–46
–48
–50
–20 –16 –12 –8 –4
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
048
LO INPUT POWER (dBm)
5571 G17
LO and RF Port Return Loss vs
Frequency
0
LO PORT, EN = LOW
LO PORT, EN = HIGH, PLO = 0dBm
–10
–20
RF PORT,
EN = LOW
–30
RF PORT,
EN = HIGH,
NO LO
–40
550 650 750
RF PORT,
EN = HIGH,
PLO = 0dBm
LO PORT,
EN = HIGH,
PLO = –10dBm
850 950 1050 1150 1250
FREQUENCY (MHz)
5571 G12
Voltage Gain vs LO Power
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
–20 –16 –12 –8 –4
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
048
LO INPUT POWER (dBm)
5571 G15
Image Rejection vs LO Power
–35
–40
–45
–50
–55
–60
–20
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–16 –12 –8 –4 0 4
LO INPUT POWER (dBm)
8
5571 G18
5571f
5
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