LT5572 Просмотр технического описания (PDF) - Linear Technology
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LT5572 Datasheet PDF : 16 Pages
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LT5572
TYPICAL PERFOR A CE CHARACTERISTICS VCC = 5V, EN = High, TA = 25°C, fLO = 2.14GHz,
PLO = 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 0.5VDC, 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)
Noise Floor vs RF Frequency
–156
fLO = 2GHz (FIXED)
–158
–160
–162
5V, –40°C
–164
5V, 25°C
5V, 85°C
4.5V, 25°C
–166
5.5V, 25°C
1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7
RF FREQUENCY (GHz)
5572 G10
Absolute I/Q Gain Imbalance
vs LO Frequency
0.2
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
0.1
0
1.3 1.5
1.7 1.9 2.1 2.3
LO FREQUENCY (GHz)
2.5 2.7
5572 G13
Image Rejection vs LO Frequency
–25
–30
–35
–40
–45
–50
–55
1.3
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
1.5 1.7 1.9 2.1 2.3
LO FREQUENCY (GHz)
2.5 2.7
5572 G11
Absolute I/Q Phase Imbalance
vs LO Frequency
5
5V, –40°C
5V, 25°C
4
5V, 85°C
4.5V, 25°C
5.5V, 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)
5572 G14
LO and RF Port Return Loss
vs RF Frequency
0
LO PORT, EN = LOW
–10
LO PORT, EN = HIGH, PLO = 0dBm
–20
LO PORT,
EN = HIGH,
–30 PLO = –10dBm
RF PORT,
EN = HIGH,
–40
NO LO
–50
1.3 1.5 1.7 1.8 2.1
RF PORT,
EN = LO
RF PORT,
EN = HIGH,
PLO = 0dBm
2.3 2.5 2.7
RF FREQUENCY (GHz)
5572 G12
Voltage Gain vs LO Power
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20 –16
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–12 –8 –4 0 4 8
LO INPUT POWER (dBm)
5572 G15
Output IP3 vs LO Power
22
20
18
16
14
12
10
8
6
4
–20
fBB1 = 2MHz
fBB2 = 2.1MHz
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–16 –12 –8 –4 0 4 8
LO INPUT POWER (dBm)
5572 G16
LO Feedthrough vs LO Power
–30
–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 8
LO INPUT POWER (dBm)
5572 G17
Image Rejection vs LO Power
–25
5V, –40°C
5V, 25°C
–30
5V, 85°C
4.5V, 25°C
5.5V, 25°C
–35
–40
–45
–50
–55
–20 –16 –12 –8 –4 0
LO INPUT POWER (dBm)
48
5572 G18
5572f
5
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