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PDF LTC5508 Data sheet ( Hoja de datos )
| Número de pieza | LTC5508 | |
| Descripción | 300MHz to 7GHz RF Power Detector with Buffered Output in SC70 Package | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC5508 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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LTC5508
300MHz to 7GHz RF Power
Detector with Buffered Output
in SC70 Package
FEATURES
s Temperature Compensated Internal Schottky
Diode RF Detector
s Wide Input Frequency Range: 300MHz to 7GHz
s Wide Input Power Range: –32dBm to 12dBm
s Buffered Detector Output
s Wide VCC Range of 2.7V to 6V
s Low Operating Current: 550µA
s Low Shutdown Current: <2µA
s SC70 Package
U
APPLICATIO S
s 802.11a, 802.11b, 802.11g, 802.15
s Multimode Mobile Phone Products
s Optical Data Links
s Wireless Data Modems
s Wireless and Cable Infrastructure
s RF Power Alarm
s Envelope Detector
DESCRIPTIO
The LTC®5508 is an RF power detector for RF applications
operating in the 300MHz to 7GHz range. A temperature
compensated Schottky diode peak detector and buffer
amplifier are combined in a small SC70 package. The
supply voltage range is optimized for operation from a
single lithium-ion cell or 3xNiMH.
The RF input voltage is peak detected using an on-chip
Schottky diode. The detected voltage is buffered and
supplied to the VOUT pin. A power saving shutdown mode
reduces supply current to less than 2µA.
The LTC5508 operates with input power levels from
–32dBm to 12dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
300MHz to 7GHz RF Power Detector
RF
INPUT
33pF
LTC5508
6
RFIN
VCC 4
2
GND
GND 5
DISABLE ENABLE
1
SHDN
VOUT 3 VOUT
100pF
VCC
0.1µF
5508 TA01
Output Voltage vs RF Input Power
10000
VCC = 3.6V
TA = 25°C
1000
2GHz
1GHz
7GHz
6GHz
4GHz
100
–32 –28 –24 –20 –16 –12 –8 –4 0 4 8 12
RF INPUT POWER (dBm)
5508 TA02
5508fa
1
1 page  
LTC5508
TYPICAL PERFOR A CE CHARACTERISTICS
RFIN Input Impedance (Pin = 0dBm, VCC = 3.6V, TA = 25°C)
FREQUENCY
RESISTANCE
REACTANCE
(GHz) (Ω) (Ω)
1.000
129.136
–86.960
1.375
100.771
–92.142
1.750
73.844
–81.141
2.125
60.159
–68.796
2.500
50.135
–58.139
2.875
43.042
–48.927
3.250
37.570
–41.033
3.625
33.924
–33.346
4.000
30.923
–26.405
4.375
28.793
–20.012
4.750
26.992
–14.080
5.125
25.717
–8.323
5.500
24.920
–3.228
5.875
24.318
2.177
6.250
24.549
7.535
6.625
25.273
12.197
7.000
26.337
16.503
S11 Forward Reflection
Impedance
1.000GHz-7.000GHz
5508 TA03
RFIN Input Impedance (Pin = –25dBm, VCC = 3.6V, TA = 25°C)
FREQUENCY
RESISTANCE
REACTANCE
(GHz) (Ω) (Ω)
1.000
114.531
–63.267
1.375
95.061
–71.669
1.750
71.491
–64.607
2.125
59.563
–54.798
2.500
51.714
–46.844
2.875
44.940
–39.753
3.250
39.708
–32.738
3.625
36.151
–26.385
4.000
33.227
–20.478
4.375
31.108
–15.107
4.750
29.514
–9.941
5.125
27.899
–4.793
5.500
27.047
0.266
5.875
26.627
5.250
6.250
26.760
10.267
6.625
27.619
14.616
7.000
28.241
18.523
S11 Forward Reflection
Impedance
1.000GHz-7.000GHz
5508 TA04
5508fa
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LTC5508.PDF ] | |
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