LT5581
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage and Linearity Error
vs VCC at 2140MHz
Supply Current vs RF Input Power
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.5
16
14
12
10
8
T
= 25°C
T
= 25°C
A
A
2.0
3.3V
5V
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
6
4
2
0
–40
–35
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
10
–25 –20
–10 –5
0
5
10 15
–15
RF INPUT POWER (dBm)
5581 G28
5581 G27
Output Transient Response with
RF and EN Pulse
Return Loss vs Frequency
Reference in Figure 1 Test Circuit
0
–5
3.0
2.5
10
5
T
= 25°C, V = 5V
CC
T
= 25°C
A
A
RF&EN
PULSE
OFF
RF&EN
PULSE
OFF
RF & EN PULSE ON
2.0
0
–10
–15
–20
–25
–30
P
= 10dBm
= 0dBm
IN
P
1.5
1.0
0.5
0
–5
IN
P
= –10dBm
IN
–10
–15
–20
P
P
= –20dBm
= –30dBm
IN
IN
–0.5
–25
0
2
3
4
5
6
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
TIME (ms)
1
1
FREQUENCY (GHz)
5581 G30
L1, C1 = 2.2nH, 1.5pF
L1, C1 = 1nH, 1.5pF
L1, C1 = 0nH, 1pF
L1, C1 = 0nH, 0.5pF
L1, C1 = 0nH, 0pF
5581 G29
Output Transient Response with
CW RF and EN Pulse
Output Transient Response
3.0
2.5
4
2
3.0
2.5
2.0
1.5
1.0
0.5
0
10
5
T
= 25°C
T
= 25°C, V = 5V
CC
A
A
EN PULSE ON
RF PULSE ON
EN
PULSE
OFF
EN
PULSE
OFF
RF
RF
PULSE
OFF
PULSE
OFF
2.0
0
0
P
= 10dBm
= 0dBm
IN
1.5
1.0
0.5
0
–2
–4
–6
–8
P
= 10dBm
= 0dBm
IN
P
IN
–5
–10
–15
–20
P
P
= –10dBm
= –20dBm
= –30dBm
IN
IN
IN
IN
P
P
P
= –10dBm
IN
P
P
= –20dBm
= –30dBm
IN
IN
–0.5
–10
0.2 0.3 0.4 0.5 0.6
TIME (ms)
1
0
0.1
0.7 0.8 0.9
20 30 40 50 60
TIME (μs)
100
0
10
70 80 90
5581 G32
5581 G31
5581f
8
Linear [ Linear ]
