LT5581IDDB-PBF LINER [Linear Technology], LT5581IDDB-PBF Datasheet - Page 4

• Manufacturer Part Number: LT5581IDDB-PBF
• Description: 6GHz RMS Power Detector with 40dB Dynamic Range
• Manufacturer: LINER [Linear Technology]

LT5581
ELECTRICAL CHARACTERISTICS
range, otherwise specifi cations are at T
PARAMETER
Output Variation vs Temperature
Deviation from CW Response
P
f
RF Input Power Range
Linear Dynamic Range, CW (Note 3)
Output Slope
Logarithmic Intercept (Note 5)
Output Variation vs Temperature
Output Variation vs Temperature
Deviation from CW Response
Output
Output DC Voltage
Output Impedance
Output Current Sourcing/Sinking
Rise Time
Fall Time
Power Supply Rejection Ratio (Note 6)
Integrated Output Voltage Noise
Enable (EN) Low = Off, High = On
EN Input High Voltage (On)
EN Input Low Voltage (Off)
Enable Pin Input Current
Turn-On Time; CW RF input
Settling Time; RF Pulse
Power Supply
Supply Voltage
Supply Current
Shutdown Current
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: The LT5581 is guaranteed to meet specifi ed performance from
–40°C to 85°C.
Note 3: The linearity error is calculated by the difference between the
incremental slope of the output and the average output slope from
–20dBm to 0dBm. The dynamic range is defi ned as the range over which
the linearity error is within ± 1dB.
4
RF
IN
= 5800MHz
= –34 to –4dBm
A
= 25°C, V
CONDITIONS
WiMAX OFDMA Preamble
WiMAX OFDM Burst
WiMAX OFDM Burst; P
Normalized to Output at 25°C, –40°C < T
P
Externally Matched to 50Ω Source
±1dB Linearity Error
Normalized to Output at 25°C, –40°C < T
P
Normalized to Output at 25°C, –40°C < T
P
No Signal Applied to RF Input
Internal Series Resistor Allows for Off-Chip Filter Cap
0.2V to 1.6V, 10% to 90%, f
1.6V to 0.2V, 10% to 90%, f
For Over Operating Input Power Range
1kHz to 6.5kHz Integration BW, P
EN = 3.3V
V
V
No RF Input Signal
EN = 0.3V, V
IN
IN
IN
OUT
OUT
CC
= –27 to –10dBm
= –25 to +6dBm
= –20 to +6dBm
Within 10% of Final Value; P
Within 10% of Final Value; P
= 3.3V, EN = 3.3V, unless otherwise noted (Note 2). Test circuit is shown in Figure 1.
CC
The
= 3.3V
l
denotes the specifi cations which apply over the full operating temperature
IN
= –25 to 6dBm
Note 4: An external capacitor at the C
frequencies below 250MHz. Lower frequency operation results in
excessive RF ripple in the output voltage.
Note 5: Logarithmic intercept is an extrapolated input power level from the
best fi tted log-linear straight line, where the output voltage is 0V.
Note 6: PSRR is determined as the dB value of the change in V
over the change in V
Note 7: Not production tested. Guaranteed by design and correlation to
production tested parameters.
RF
RF
= 2140MHz
= 2140MHz
IN
IN
IN
= 0dBm CW
= 0dBm
= 0dBm
A
A
A
< 85°C;
< 85°C;
< 85°C;
CC
supply voltage.
l
l
l
MIN
2.7
SQ
2
pin should be used for input
–25 to 6
±0.5
±0.1
±0.5
±0.5
±0.2
TYP
–33
180
300
150
5/5
3.3
1.4
0.2
31
31
±1
49
20
1
8
1
1
MAX
5.25
0.3
6
OUT
voltage
mV/dB
μV
UNITS
dBm
dBm
5581f
RMS
mV
mA
mA
dB
dB
dB
dB
dB
dB
dB
dB
μA
μA
μs
μs
μs
μs
Ω
V
V
V