Datasheet LT5581 (Analog Devices) - 4

LT5581
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VCC = 3.3V, EN = 3.3V, unless otherwise noted (Note 2). Test circuit is shown in Figure 1. PARAMETER CONDITIONS MIN TYP MAX UNITS
Output Variation vs Temperature Normalized to Output at 25°C, –40°C < TA < 85°C; ±0.5 dB PIN = –27 to –10dBm Deviation from CW Response WiMAX OFDMA Preamble ±0.1 dB PIN = –34 to –4dBm WiMAX OFDM Burst ±0.5 dB
fRF = 5800MHz
RF Input Power Range Externally Matched to 50Ω Source –25 to 6 dBm Linear Dynamic Range, CW (Note 3) ±1dB Linearity Error 31 dB Output Slope 31 mV/dB Logarithmic Intercept (Note 5) –33 dBm Output Variation vs Temperature Normalized to Output at 25°C, –40°C < TA < 85°C; ±1 dB PIN = –25 to +6dBm Output Variation vs Temperature Normalized to Output at 25°C, –40°C < TA < 85°C; ±0.5 dB PIN = –20 to +6dBm Deviation from CW Response WiMAX OFDM Burst; PIN = –25 to 6dBm ±0.2 dB
Output
Output DC Voltage No Signal Applied to RF Input 180 mV Output Impedance Internal Series Resistor Allows for Off-Chip Filter Cap 300 Ω Output Current Sourcing/Sinking 5/5 mA Rise Time 0.2V to 1.6V, 10% to 90%, fRF = 2140MHz 1 µs Fall Time 1.6V to 0.2V, 10% to 90%, fRF = 2140MHz 8 µs Power Supply Rejection Ratio (Note 6) For Over Operating Input Power Range 49 dB Integrated Output Voltage Noise 1kHz to 6.5kHz Integration BW, PIN = 0dBm CW 150 µVRMS
Enable (EN) Low = Off, High = On
EN Input High Voltage (On) l 2 V EN Input Low Voltage (Off) l 0.3 V Enable Pin Input Current EN = 3.3V 20 µA Turn-On Time; CW RF input VOUT Within 10% of Final Value; PIN = 0dBm 1 µs Settling Time; RF Pulse VOUT Within 10% of Final Value; PIN = 0dBm 1 µs
Power Supply
Supply Voltage l 2.7 3.3 5.25 V Supply Current No RF Input Signal 1.4 mA Shutdown Current EN = 0.3V, VCC = 3.3V 0.2 6 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
An external capacitor at the CSQ pin should be used for input may cause permanent damage to the device. Exposure to any Absolute frequencies below 250MHz. Lower frequency operation results in Maximum Rating condition for extended periods may affect device excessive RF ripple in the output voltage. reliability and lifetime.
Note 5:
Logarithmic intercept is an extrapolated input power level from the
Note 2:
The LT5581 is guaranteed functional over the operating best fitted log-linear straight line, where the output voltage is 0V. temperature range from –40°C to 85°C.
Note 6:
PSRR is determined as the dB value of the change in VOUT voltage
Note 3:
The linearity error is calculated by the difference between the over the change in VCC supply voltage. incremental slope of the output and the average output slope from
Note 7:
Not production tested. Guaranteed by design and correlation to –20dBm to 0dBm. The dynamic range is defined as the range over which production tested parameters. the linearity error is within ±1dB. 5581fb 4 For more information www.linear.com/LT5581 Document Outline Description Typical Application Absolute Maximum Ratings Pin Configuration Typical Performance Characteristics Pin Functions Package Description