LT5538_15 Datasheet, PDF (4/12 Pages) Linear Technology – 40MHz to 3.8GHz RF Power Detector with 75dB Dynamic Range

LT5538
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C, V_CC = 5V, ENBL = 5V. (Note 2)
SYMBOL
PARAMETER
Sensitivity
Output Variation vs Temperature
f_RF = 3600 MHz
RF Input Power Range
Linear Dynamic Range
Output Slope
Logarithmic Intercept
Sensitivity
Output Variation vs Temperature
Output Interface
Power Up/Down
Power Supply
Output DC Voltage
Output Impedance
Source Current
Sink Current
Rise Time
Fall Time
ENBL = High (On)
ENBL = Low (Off)
ENBL Input Current
Turn ON time
Turn OFF Time
Supply Voltage
Supply Current
Shutdown Current
CONDITIONS
Normalized to Output at 25°C
P_IN = –50dBm; –40°C < T_A < 85°C
P_IN = –30dBm; –40°C < T_A < 85°C
P_IN = –10dBm; –40°C < T_A < 85°C
±1 dB Linearity Error (Note 3)
(Note 5)
Normalized to Output at 25°C
P_IN = –45dBm; –40°C < T_A < 85°C
P_IN = –25dBm; –40°C < T_A < 85°C
P_IN = –5dBm; –40°C < T_A < 85°C
No RF Signal Present
MIN
●
●
●
●
●
●
0.5V to 1.6V, 10% to 90%, f_RF = 880 MHz
1.6V to 0.5V, 10% to 90%, f_RF = 880 MHz
VENBL = 5V
●1
●
3
ENBL = Low
TYP
–69.5
0.3/0.3
0.7/–0.3
1.1/–0.9
–65 to 10
57
18
–81.4
–63
0.6/–0.3
0.9/–0.6
1.4/–1.2
0.350
150
10
200
100
180
205
300
1
29
1
MAX UNITS
dBm
dB
dB
dB
dBm
dB
mV/dB
dBm
dBm
dB
dB
dB
V
Ω
mA
μA
ns
ns
V
0.3
V
μA
ns
μs
5.25
V
36
mA
100
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Specifications over the –40°C to 85°C temperature range are
assured by design, characterization and correlation with statistical process
control.
Note 3: The linearity error is calculated by the difference between the
incremental slope of the output and the average slope from –50dBm
to –20dBm. The dynamic range is defined as the range over which the
linearity error is within ±1dB.
Note 4: Sensitivity is defined as the minimum input power required for the
linearity error within 3dB of the ideal log-linear transfer curve.
Note 5: Logarithmic Intercept is an extrapolated input power level from the
best-fitted log-linear straight line, where the output voltage is 0V.
5538f
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