lt5572 Linear Technology Corporation, lt5572 Datasheet - Page 5

• Manufacturer Part Number: lt5572
• Description: 1.5ghz To 2.5ghz High Linearity Direct Quadrature Modulator
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
P
LO feedthrough nulling. f
unless otherwise noted. (Note 3)
LO
–160
–166
–156
–158
–162
–164
16
14
12
= 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 0.5V
22
20
18
10
0.2
0.1
8
6
4
0
–20
1.3
1.3
Noise Floor vs RF Frequency
Absolute I/Q Gain Imbalance
vs LO Frequency
Output IP3 vs LO Power
f
LO
= 2GHz (FIXED)
–16
1.5
1.5
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
LO INPUT POWER (dBm)
–12
1.7
RF FREQUENCY (GHz)
1.7
LO FREQUENCY (GHz)
1.9
–8
1.9
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
RF
2.1
2.1
–4
= f
f
f
BB1
BB2
BB
2.3
2.3
0
W
= 2MHz
= 2.1MHz
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
+ f
2.5
2.5
LO
4
5572 G16
5572 G10
5572 G13
(upper sideband selection). P
U
2.7
2.7
8
–30
–45
–55
–60
–25
–30
–40
–45
–50
–55
–35
–40
–50
–35
DC
5
4
3
2
1
0
–20
1.3
1.3
Image Rejection vs LO Frequency
Absolute I/Q Phase Imbalance
vs LO Frequency
LO Feedthrough vs LO Power
, baseband input frequency f
–16
1.5
1.5
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
LO INPUT POWER (dBm)
–12
1.7
1.7
LO FREQUENCY (GHz)
LO FREQUENCY (GHz)
1.9
1.9
–8
RF(OUT)
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
2.1
2.1
–4
= –10dBm (–10dBm/tone for 2-tone measurements),
2.3
2.3
0
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
2.5
2.5
4
BB
5572 G17
V
5572 G11
5572 G14
CC
= 2MHz, I and Q 90° shifted, without image or
2.7
2.7
8
= 5V, EN = High, T
–20
–50
–25
–50
–55
–10
–30
–40
–14
–30
–35
–40
–45
–10
–12
–16
–18
–2
–4
–6
–8
0
–20
–20
1.3
LO and RF Port Return Loss
vs RF Frequency
Voltage Gain vs LO Power
Image Rejection vs LO Power
P
LO
EN = HIGH,
LO PORT,
–16
–16
1.5
= –10dBm
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
A
LO PORT, EN = HIGH, P
= 25°C, f
LO INPUT POWER (dBm)
LO INPUT POWER (dBm)
–12
–12
1.7
EN = HIGH,
RF FREQUENCY (GHz)
RF PORT,
LO PORT, EN = LOW
NO LO
1.8
–8
–8
LO
2.1
–4
–4
= 2.14GHz,
LT5572
RF PORT,
EN = LO
RF PORT,
EN = HIGH,
P
2.3
0
0
LO
LO
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
= 0dBm
= 0dBm
2.5
4
4
5572 G18
5572 G12
5572 G15
5
5572f
2.7
8
8