LT5528
6
5528f
Gain vs LO Power
RF Output Power, HD2 and HD3
at 2140MHz vs Baseband Voltage
and Temperature
LO Feed-Through and Image
Rejection at 2140MHz vs Baseband
Voltage and Temperature
Output IP3 vs LO Power
LO POWER (dBm)
–20
GAIN (dB)
5528 G13
–8–12–16 –4 0
84
–4
–6
–8
–10
–12
–14
–16
–18
–20
4.5V, 25°C
5V, –40°C
5V, 25°C
5V, 85°C
5.5V, 25°C
–20
–8–12–16 –4 0
84
LO POWER (dBm)
OIP3 (dBm)
22
20
18
16
12
14
10
8
6
4
2
0
4.5V, 25°C
5V, –40°C
5V, 25°C
5V, 85°C
5.5V, 25°C
5528 G14
f
BB, 1
= 2MHz
f
BB, 2
= 2.1MHz
RF Output Power, HD2 and HD3
at 2140MHz vs Baseband Voltage
and Supply Voltage
0
123
54
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
HD2, HD3 (dBc)
–10
–20
–30
–40
–60
–50
–70
RF OUTPUT POWER (dBm)
10
0
–10
–20
–30
–40
–50
–40°C
25°C
85°C
5528 G15
f
BBI
= 2MHz, 0°
f
BBQ
= 2MHz, 90°
HD2 = MAX POWER AT f
LO
+ 2 • f
BB
OR f
LO
– 2 • f
BB
HD3 = MAX POWER AT f
LO
+ 3 • f
BB
OR f
LO
– 3 • f
BB
HD2
RF
HD3
0
123
54
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
LOFT (dBm), IR (dBc)
–25
–30
–40
–45
–35
–50
–40°C
25°C
85°C
5528 G17
f
BBI
= 2MHz, 0°
f
BBQ
= 2MHz, 90°
IR
LOFT
0
123
54
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
HD2, HD3 (dBc)
–10
–20
–30
–40
–60
–50
–70
RF OUTPUT POWER (dBm)
10
0
–10
–20
–30
–40
–50
5528 G16
f
BBI
= 2MHz, 0°
f
BBQ
= 2MHz, 90°
HD2 = MAX POWER AT f
LO
+ 2 • f
BB
OR f
LO
– 2 • f
BB
HD3 = MAX POWER AT f
LO
+ 3 • f
BB
OR f
LO
– 3 • f
BB
HD2
RF
HD3
4.5V
5V
5.5V
V
CC
= 5V, EN = High, T
A
= 25°C, f
LO
= 2.14GHz, P
LO
= 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 0.525V
DC
, Baseband Input Frequency f
BB
= 2MHz, I&Q 90° shifted. f
RF
= f
BB
+ f
LO
(upper
sideband selection). P
RF, OUT
= –10dBm (–10dBm/tone for 2-tone measurements), unless otherwise noted. (Note 3)
TYPICAL PERFOR A CE CHARACTERISTICS
UW