LT5568-2EUF 데이터 시트보기 (PDF) - Linear Technology
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LT5568-2EUF Datasheet PDF : 16 Pages
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LT5568-2
TYPICAL PERFOR A CE CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 900MHz,
PLO = 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 0.54VDC, Baseband Input Frequency fBB = 2MHz, I&Q 90° shifted. 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
–158
–159
fLO = 900MHz
(FIXED)
NO RF
–160
Image Rejection vs LO Frequency
–30
5V, –40°C
5V, 25°C
5V, 85°C
–35
4.5V, 25°C
5.5V, 25°C
–40
–161
5V, –40°C
–163
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–163
550 650 750 850 950 1050 1150 1250
RF FREQUENCY (MHz)
55682 G10
LO Feedthrough to RF Output
vs LO Input Power
–38
– 40
– 42
–45
–50
fBB = 100kHz
–55
550 650 750 850 950 1050 1150 1250
LO FREQUENCY (MHz)
55682 G11
Image Rejection vs LO Input Power
– 35
PRF = –10dBm
fBB = 100kHz
– 40
LO and RF Port Return Loss
vs RF Frequency
0
LO PORT, EN = LOW
–10
LO PORT, EN = HIGH,
PLO = 0dBm
–20
RF PORT,
EN = LOW
–30
LO PORT,
EN = HIGH,
–40 PLO = 10dBm
550 650 750
RF PORT,
EN = HIGH,
PLO = 0dBm
RF PORT, EN = HIGH, No LO
850 950 1050 1150 1250
RF FREQUENCY (MHz)
55682 G12
Voltage Gain vs LO Power
–4
–6
–8
– 44
– 45
–10
– 46
5V, –40°C
5V, 25°C
– 48
5V, 85°C
4.5V, 25°C
5.5V, 25°C
– 50
–20 –16 –12 –8 –4
048
LO INPUT POWER (dBm)
55682 G13
Output IP3 vs LO Power
25
fBB, 1 = 2MHz
fBB, 2 = 2.1MHz
23
21
19
17
15
13
–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)
55682 G16
– 50
– 55
–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
55682 G14
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage
and Temperature
–10
10
RF
–20
–40°C
–30
85°C
25°C
0
25°C
–10
–40
–40°C 85°C
–20
HD3
25°C
–50
HD2
–40°C –30
–60
–40
85°C
–70
–50
–80
–60
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP–P, DIFF)
HD2 = MAX POWER AT fLO + 2 • fBB OR fLO – 2 • fBB
HD3 = MAX POWER AT fLO + 3 • fBB OR fLO – 3 • fBB 55682 G17
–12
–14
–16
–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)
55682 G15
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage
and Supply Voltage
–10
10
RF
–20
0
4.5V
–30
5V
–10
–40
HD3
–20
5V
–50
–30
5.5V
HD2
–60
4.5V –40
–70
–50
–80
–60
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP–P, DIFF)
HD2 = MAX POWER AT fLO + 2 • fBB OR fLO – 2 • fBB
HD3 = MAX POWER AT fLO + 3 • fBB OR fLO – 3 • fBB 55682 G18
55682f
5
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