lt5534 Linear Technology Corporation, lt5534 Datasheet
lt5534
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lt5534 Summary of contents
Page 1
... RF limiters. Their outputs are summed to generate an accurate log-linear DC voltage proportional to the input RF signal in dB. The output is buffered with a low output impedance driver. The LT5534 delivers superior tempera- ture stability (typical output variation within ±1dB over the full temperature range). The output responds in less than 40ns to a large RF input signal ...
Page 2
... T = –40°C to 85° Input Signal Input from No Signal to –2dBm INFORMATION ORDER PART TOP VIEW NUMBER 6 RF LT5534ESC6 5 GND SC6 PART MARKING SC6 PACKAGE 6-LEAD PLASTIC SC70 LBGD = 125°C, θ = 256°C/W JA http://www ...
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... NORMALIZED AT 25° –40° 85°C A –1 –1 –2 –2 –3 –3 0 –60 –50 –40 –30 RF INPUT POWER (dBm) 5534 G05 LT5534 UNITS 0 µ –1 = 25°C –2 = 85°C = –40C –3 –10 0 5534 G03 – ...
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... LT5534 W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage vs RF Input Power 2 1.9GHz 2.0 1.6 1.2 0 25°C 0 85° –40C A 0 –60 –50 –40 –30 –20 – INPUT POWER (dBm) 5534 G07 V Variation vs RF Input Power OUT 2.5GHz CC NORMALIZED AT 25° ...
Page 5
... RF (Pin 6): RF input. This pin is internally biased to V – 0.18V. A coupling capacitor must be used to connect CC to the RF signal source DET DET RF LIMITER RF LIMITER RF LIMITER BIAS EN 1 LT5534 PULSED RF 0dBm AT 100MHz 50ns/DIV 5534 G16 DET + V OUT 3 – V REF 5534 BD 5534fa 5 ...
Page 6
... The impedance vs frequency of the RF input is detailed in Table 1. The approximate linear RF input power range of the LT5534 is from –62dBm to –2dBm with a 50Ω source -0.18V. The pin impedance. However, this range can be adjusted either CC upward or downward to tailor for a particular application ...
Page 7
... Though the range is adjust- able, the overall linear dynamic range remains the same. Output Interface The output interface of the LT5534 is shown in Figure 4. The output currents from the RF detectors are summed and converted into an output voltage, V charging current available to the output load is about 200µA. ...
Page 8
... LT5534 PACKAGE DESCRIPTIO 0.47 0.65 MAX REF 3.26 MAX 2.1 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 – 0.40 0.10 – 0.30 NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR RELATED PARTS PART NUMBER DESCRIPTION LT5504 800MHz to 2 ...