lt5538 Linear Technology Corporation, lt5538 Datasheet - Page 6

• Manufacturer Part Number: lt5538
• Description: 40mhz To 3.8ghz Rf Power Detector With 75db Dynamic Range
• Manufacturer: Linear Technology Corporation

LT5538
TYPICAL PERFORMANCE CHARACTERISTICS
6
1.8
1.5
0.3
2.0
1.7
0.5
0.2
1.2
0.9
0.6
1.4
1.1
0.8
–2
–3
–1
0
3
2
1
0
–70
–70 –60 –50 –40 –30 –20 –10
–75 –65 –55 –45 –35 –25 –15 –5
Output Voltage, Linearity Error vs
Input Power at 2.7GHz
V
3.6GHz
Output Voltage, Linearity Error vs
V
V
NORMALIZED AT 25°C
OUT
CC
CC
NORMALIZED AT 5V
–60
V
= 5V
@40MHz
CC
Variation vs Input Power at
= 5V
–50 –40 –30 –20 –10
T
T
A
A
INPUT POWER (dBm)
INPUT POWER (dBm)
INPUT POWER (dBm)
= –40°C
= 85°C
T
T
T
A
A
A
= –40°C
= 25°C
= 85°C
V
V
CC
CC
0
0
= 5V
= 3V
5538 G10
5538 G13
5538 G16
5
10
10
3
2
1
0
–1
–2
–3
3
2
1
0
–1
–2
–3
–2
–3
2.0
1.7
1.4
1.1
0.8
0.5
0.2
–1
40
35
30
25
20
15
10
3
2
1
0
5
0
–70
–75 –65 –55 –45 –35 –25 –15 –5
Slope Distribution vs
Temperature at 2.14GHz
V
2.7GHz
Output Voltage, Linearity Error vs
V
V
NORMALIZED AT 25°C
OUT
CC
CC
–60
16
NORMALIZED AT 5V
= 5V
@2140MHz
Variation vs Input Power at
–50 –40 –30 –20 –10
16.8
T
T
A
A
INPUT POWER (dBm)
= –40°C
= 85°C
INPUT POWER (dBm)
SLOPE (mV/dB)
17.6
18.4
19.2
V
V
CC
CC
T
T
T
A
A
A
= 5V
= 3V
20
= –40°C
= 25°C
= 85°C
0
5538 G11
5538 G14
5538 G17
20.8
5
(Test Circuit shown in Figure 5)
10
3
2
1
0
–1
–2
–3
1.8
1.5
1.2
0.9
0.6
0.3
1.8
1.5
0.3
1.2
0.9
0.6
16
14
12
10
0
2
0
8
6
4
–65 –55 –45 –35 –25 –15
0
–65 –55 –45 –35 –25 –15
–98
Output Voltage, Linearity Error vs
Input Power at 3.6GHz
Logarithmic Intercept Distribution
vs Temperature at 2.14GHz
Output Voltage, Linearity Error vs
V
CC
–96
V
V
@3600MHz
CC
CC
LOGARITHMIC INTERCEPT (dBm)
–94
= 5V
= 5V
V
V
–92
INPUT POWER (dBm)
CC
CC
INPUT POWER (dBm)
= 5V
= 3V
–90
–88
T
T
T
–86
A
A
A
= –40°C
= 25°C
= 85°C
–84
–82
T
T
T
–5
A
A
A
–5
= –40°C
= 25°C
= 85°C
–80
5538 G12
5538 G15
5538 G18
5
–78
5
5538f
3
2
–2
–3
1
0
–1
3
2
1
0
–1
–2
–3