lt5581 Linear Technology Corporation, lt5581 Datasheet - Page 8

• Manufacturer Part Number: lt5581
• Description: 6ghz Rms Power Detector With 40db Dynamic Range
• Manufacturer: Linear Technology Corporation

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