lt5571 Linear Technology Corporation, lt5571 Datasheet - Page 5

• Manufacturer Part Number: lt5571
• Description: 620mhz - 1100mhz High Linearity Direct Quadrature Modulator
• Manufacturer: Linear Technology Corporation

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