LT5518 데이터 시트보기 (PDF) - Linear Technology
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LT5518 Datasheet PDF : 16 Pages
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LT5518
TYPICAL PERFOR A CE CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 2.14GHz,
PLO = 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 2.06VDC, Baseband Input Frequency fBB = 2MHz, I and 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)
Image Rejection vs LO Frequency
–25
–30
–35
–40
–45
–50
–55
1.3
5V, TA = – 40°C
5V, TA = 25°C
5V, TA = 85°C
4.5V, TA = 25°C
5.5V, TA = 25°C
1.5 1.7 1.9 2.1 2.3
LO FREQUENCY (GHz)
2.5 2.7
5518 G10
Absolute I/Q Gain Imbalance
vs LO Frequency
02
5V, TA = – 40°C
5V, TA = 25°C
5V, TA = 85°C
4.5V, TA = 25°C
5.5V, TA = 25°C
0.1
0
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7
LO FREQUENCY (GHz)
5518 G11
Absolute I/Q Phase Imbalance
vs LO Frequency
5
5V, TA = – 40°C
5V, TA = 25°C
4
5V, TA = 85°C
4.5V, TA = 25°C
5.5V, TA = 25°C
3
2
1
0
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7
LO FREQUENCY (GHz)
5518 G12
Voltage Gain vs LO Power
–2
–4
–6
–8
–10
–12
–14
5V, TA = – 40°C
5V, TA = 25°C
5V, TA = 85°C
–16
4.5V, TA = 25°C
5.5V, TA = 25°C
–18
–20 –16 –12 – 8 –4 0 4 8
LO INPUT POWER (dBm)
5518 G13
RF CW Output Power, HD2 and
HD3 vs Baseband Voltage and
Supply Voltage
– 10
10
– 20
RF
– 30
– 40
0
HD3
4.5V
5.5V –10
5V
– 20
HD2
– 50
– 30
– 60
– 70
0
HD2 = MAX POWER AT
fLO + 2 • fBB OR fLO – 2 • fBB – 40
HD3 = MAX POWER AT
fLO + 3 • fBB OR fLO – 3 • fBB
– 50
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5518 G16
Output IP3 vs LO Power
24
22
20
18
16
14
12
10
8
6
4
–20 –16 –12 –8
5V, TA = – 40°C
5V, TA = 25°C
5V, TA = 85°C
4.5V, TA = 25°C
5.5V, TA = 25°C
–4 0 4 8
LO INPUT POWER (dBm)
5518 G14
RF CW Output Power, HD2 and HD3 vs
Baseband Voltage and Temperature
– 10
10
– 20
RF
– 30
– 40
0
HD3
TA = – 40°C – 10
TA = 85°C
TA = 25°C
– 20
HD2
– 50
– 30
– 60
– 70
0
HD2 = MAX POWER AT
fLO + 2 • fBB OR fLO – 2 • fBB – 40
HD3 = MAX POWER AT
fLO + 3 • fBB OR fLO – 3 • fBB
– 50
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5518 G15
LO Feedthrough to RF Output and
Image Rejection vs Baseband
Voltage and Temperature
– 25
TA = – 40°C
TA = 85°C
– 30
TA = 25°C
LO FT
LO Feedthrough to RF Output and
Image Rejection vs Baseband
Voltage and Supply Voltage
– 25
4.5V
5.5V
– 30
5V
LO FT
– 35
– 35
– 40
– 40
– 45
– 45
IR
IR
– 50
– 50
– 55
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5518 G17
– 55
0
1
2
3
4
5
I AND Q BASEBAND VOLTAGE (VP-P, DIFF)
5518 G18
5518f
5
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