LT5537EDDB#TRPBF Analog Devices

LINEARITY ERROR (dB) LT5537 Wide Dynamic Range RF/IF Log Detector FEATURES DESCRIPTIO Low Frequency to 1000MHz Operation The LT 5537 is a wide dynamic range RF/IF detector, 83dB Dynamic Range with 1dB Nonlinearity operational from below 10MHz to 1000MHz. The lower limit of the operating frequency range can be extended to at 200MHz Sensitivity 76dBm or Better at 200MHz near DC by the use of an external capacitor. The input Log-Linear Transfer Slope of 20mV/dB dynamic range at 200MHz with 3dB nonlinearity is 90dB Supply Voltage Range: 2.7V to 5.25V (from 76dBm to 14dBm, single-ended 50 input). The Supply Current: 13.5mA at 3V detector output voltage slope is nominally 20mV/dB, and Tiny 8-Lead (3mm 2mm) DFN Package the typical temperature coefficient is 0.01dB/C at 200MHz. , LTC and LT are registered trademarks of Linear Technology Corporation. U All other trademarks are the property of their respective owners. APPLICATIO S Linear-to-Log Signal Level Conversion Received Signal Strength Indication (RSSI) RF Power Control RF/IF Power Detection Receiver RF/IF Gain Control Envelope Detection ASK Receiver TYPICAL APPLICATIO OPTIONAL 4 5 Output Voltage, Linearity Error + 7k CAP CAP vs Input Power at 200MHz 7k 2.4 3 V CC OFFSET 6 2.0 2 CANCELLATION 85C 15nF 1nF 1F + RF IN IN 25C 2 1.6 1 15nF 40C IN 1.2 0 3 0.8 1 0.4 2 OUT OUTPUT DETECTOR CELLS 8 BUFFER V = ENBL = 3V CC 7.2k 0 3 V EE 80 60 40 20 0 20 7 ENBL INPUT POWER (dBm) BANDGAP REFERENCE 1 AND BIASING 5537 TA01b EXPOSED PAD 9 5537 TA01a 5537fa 1 V (V) OUT U ULT5537 UUW PACKAGE/ORDER I FOR ATIO ABSOLUTE AXI U RATI GS (Note 1) TOP VIEW Power Supply Voltage ........................................... 5.5V Enable Voltage ................................... 0.2V, V + 0.2V ENBL 1 8 OUT CC + IN 2 7 V Input Power (Note 2) ......................................... 22dBm EE 9 IN V 3 6 CC Operating Ambient Temperature Range .. 40C to 85C + CAP 4 5 CAP Storage Temperature Range ................ 65C to 125C Maximum Junction Temperature ......................... 125C DDB PACKAGE 8-LEAD (3mm 2mm) PLASTIC DFN = 76C/W JA EXPOSED PAD (PIN 9) SHOULD BE SOLDERED TO PCB ORDER PART NUMBER DDB PART MARKING LT5537EDDB LBJR Order Options Tape and Reel: Add TR Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Lead Free Part Marking: