LT5571
6
5571f
GAIN (dB)
–6–6.5
25
20
15
10
5
0
5571 G25
–5.5 –5 –4.5 –4 –3.5 –3 –2.5 –2
PERCENTAGE (%)
–40°C
25°C
85°C
V
BB
= 400mV
P-P
NOISE FLOOR (dBm/Hz)
–159.9
25
20
15
10
5
0
5571 G26
–159.6 –159.3 –159.0 –158.7
PERCENTAGE (%)
–40°C
25°C
85°C
LO LEAKAGE (dBm)
<–50
20
10
0
5571 G27
–36–38 –34–46–48 –44 –42 –40
PERCENTAGE (%)
–40°C
25°C
85°C
V
BB
= 400mV
P-P
I AND Q BASEBAND VOLTAGE (V
P-P,DIFF, EACH TONE
)
0.1
–80
–70
P
TONE
(dBm), IM2, IM3 (dBc)
–50
–30
10
RF
IM3
IM2
110
5571 G23
–10
–60
–40
0
–20
IM2 = POWER AT
f
LO
+ 4.1MHz
IM3 = MAX POWER
AT f
LO
+ 1.9MHz
OR f
LO
+ 2.2MHz
f
BBI
= 2MHz, 2.1MHz, 0°
f
BBQ
= 2MHz, 2.1MHz, 90°
25°C
85°C
–40°C
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
0
HD2, HD3 (dBc)
RF CW OUTPUT POWER (dBm)
0
–10
–20
45
5571 G19
–50
–60
–40
–70
–80
–30
20
10
0
–30
–40
–20
–50
–60
–10
123
HD3
RF
HD2
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
25°C
85°C
–40°C
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
0
HD2, HD3 (dBc)
RF CW OUTPUT POWER (dBm)
–10
–20
45
5571 G20
–50
–60
–40
–70
–80
–30
10
0
–30
–40
–20
–50
–60
–10
123
HD3
RF
HD2
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
5V
5.5V
4.5V
I AND Q BASEBAND VOLTAGE (V
P-P, DIFF
)
0
LO FEEDTHROUGH (dBm)
–30
45
5571 G21
–40
–45
–35
123
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
I AND Q BASEBAND VOLTAGE (V
P-P,DIFF
)
0
IMAGE REJECTION (dBc)
–48
4
5571 G22
–50
–52
–54
–56
–58
123
5
–46
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
I AND Q BASEBAND VOLTAGE (V
P-P,DIFF, EACH TONE
)
0.1
–80
–70
P
TONE
(dBm), IM2, IM3 (dBc)
–50
–30
10
RF
IM3
IM2
110
5571 G24
–10
–60
–40
0
–20
IM2 = POWER AT
f
LO
+ 4.1MHz
IM3 = MAX POWER
AT f
LO
+ 1.9MHz
OR f
LO
+ 2.2MHz
f
BBI
= 2MHz, 2.1MHz, 0°
f
BBQ
= 2MHz, 2.1MHz, 90°
5V
5.5V
4.5V
TYPICAL PERFORMANCE CHARACTERISTICS
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage and
Temperature
RF CW Output Power, HD2 and
HD3 vs CW Baseband Voltage and
Supply Voltage
LO Feedthrough to RF Output vs
CW Baseband Voltage
Image Rejection vs CW Baseband
Voltage
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Temperature
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Supply Voltage
Voltage Gain Distribution Noise Floor Distribution (no RF) LO Leakage Distribution
V
CC
= 5V, EN = High, T
A
= 25°C, f
LO
= 900MHz,
f
RF
= 902MHz, P
LO
= 0dBm. BBPI, BBMI, BBPQ, BBMQ CM input voltage = 0.5V
DC
, Baseband Input Frequency f
BB
= 2MHz, I & Q 90°
shifted, without image or LO feedthrough nulling. f
RF
= f
BB
+ f
LO
(upper sideband selection). P
RF(OUT)
= –10dBm (–10dBm/tone for 2-
tone measurements), unless otherwise noted. (Note 3)
