LTC5532 Precision 300MHz to 7GHz RF Detector with Gain and Offset Adjustment FEATURES DESCRIPTIO n Temperature Compensated Internal Schottky The LTC 5532 is an RF power detector for RF applications Diode RF Detector operating in the 300MHz to 7GHz range. A temperature n Wide Input Frequency Range: 300MHz to 7GHz* compensated Schottky diode peak detector and buffer TM n Wide Input Power Range: 32dBm to 10dBm amplifier are combined in a small ThinSOT or (2mm n Buffered Detector Output with External Gain Control 2mm) DFN package. The supply voltage range is opti- n Precision V Offset Control mized for operation from a single lithium-ion cell or 3 OUT n Low Starting Voltage: 120mV 35mV for Gain = 2x NiMH. n Wide V Range of 2.7V to 6V CC The RF input voltage is peak detected using an on-chip n Low Operating Current: 500m A Schottky diode. The detected voltage is buffered and n Available in a Low Profile (1mm) SOT-23 Package supplied to the V pin. OUT and Tiny 6-Lead (2mm 2mm) DFN Package The LTC5532 output buffer gain is set via external resis- U tors. The initial starting voltage of 120mV 35mV can be APPLICATIO S precisely adjusted using the V pin. OS n 802.11a, 802.11b, 802.11g, 802.15 n The LTC5532 operates with RF input power levels from Multimode Mobile Phone Products n 32dBm to 10dBm. Optical Data Links n , LTC and LT are registered trademarks of Linear Technology Corporation. Wireless Data Modems ThinSOT is a trademark of Linear Technology Corporation. n *Higher frequency operation is achievable with reduced performance. Consult factory for more Wireless and Cable Infrastructure information. n RF Power Alarm n Envelope Detector TYPICAL APPLICATIO Output Voltage vs RF Input Power (SOT-23 Package) 3600 300MHz to 7GHz RF Power Detector V = 3.6V CC (SOT-23 Package) T = 25C 3200 A 1000MHz GAIN = 2 2800 V = 0V OS 33pF 1 300MHz RF 6 2400 V RF CC V IN CC INPUT 4000MHz 2000 100pF 0.1F LTC5532ES6 2 5 1600 GND V OUT 1200 R A 3 4 V OS 2000MHz V V 800 OS M REFERENCE 3000MHz 5000MHz R 400 B 6000MHz 7000MHz 0 5532 TA01 32 27 22 17 12 7 2 3 8 RF INPUT POWER (dBm) 5532 TA02 5532f 1 V OUTPUT VOLTAGE (mV) OUT U ULTC5532 ABSOLUTE AXI U RATI GS (Note 1) Maximum Junction Temperature ......................... 125 C V , V , V , V .................................. 0.3V to 6.5V CC OUT M OS Storage Temperature Range ................ 65 C to 125 C RF Voltage ......................................(V 1.5V) to 7V IN CC Lead Temperature (Soldering, 10 sec) RF Power (RMS) ............................................. 12dBm IN SOT-23 Only ......................................................... 300 C I ...................................................................... 5mA VOUT Operating Temperature Range (Note 2) .. 40 C to 85 C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART TOP VIEW NUMBER NUMBER V 1 6 RF CC IN RF 1 6 V IN CC 7 2 5 V GND OUT LTC5532EDC LTC5532ES6 5 V GND 2 OUT V 3 4 V M OS V 3 4 V OS M DC6 PART MARKING S6 PART MARKING S6 PACKAGE DC6 PACKAGE 6-LEAD PLASTIC TSOT-23 6-LEAD (2mm 2mm) PLASTIC DFN T = 125 C, q = 85 C/W JMAX JA T = 125 C, q = 250 C/W JMAX JA LAFR LTAFS EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. V = 3.6V, RF Input Signal is Off, R = R = 1k, V = 0V unless A CC A B OS otherwise noted (Note 2). PARAMETER CONDITIONS MIN TYP MAX UNITS V Operating Voltage l 2.7 6 V CC I Operating Current I = 0mA l 0.5 0.7 mA VCC VOUT V V (No RF Input) R = 2k, V = 0V l 85 100 to 140 155 mV OUT OL LOAD OS V Output Current V = 1.75V, V = 2.7V, D V < 10mV l 24 mA OUT OUT CC OUT V Bandwidth C = 33pF, R = 2k (Note 4) 2 MHz OUT LOAD LOAD V Load Capacitance (Note 6) l 33 pF OUT V Slew Rate V = 1V Step, C = 33pF, Total R = 2k (Note 3) 3 V/m s OUT RFIN LOAD LOAD V Noise V = 3V, Noise BW = 1.5MHz, 50W RF Input Termination, 1 mV OUT CC P-P 50W AC Output Termination V Voltage Range l01 V OS V Input Current V = 1V l 0.5 0.5 m A OS OS V Voltage Range l0V -1. 8 V M CC V Input Current V = 3.6V l 0.5 0.5 m A M M RF Input Frequency Range (Note 7) 300 to 7000 MHz IN RF Input Power Range RF Frequency = 300MHz to 7GHz (Note 5, 6) V = 2.7V to 6V 32 to 10 dBm IN CC RF AC Input Resistance F = 1000MHz, Pin = 25dBm 220 W IN RF Input Shunt Capacitance F = 1000MHz, Pin = 25dBm 0.65 pF IN Note 1: Absolute Maximum Ratings are those values beyond which the life Note 4: Bandwidth is calculated based on the 10% to 90% rise time of a device may be impaired. equation: BW = 0.35/rise time. Note 2: Specifications over the 40 C to 85 C operating temperature Note 5: RF performance is tested at 1800MHz range are assured by design, characterization and correlation with Note 6: Guaranteed by design. statistical process controls. Note 7: Higher frequency operation is achievable with reduced Note 3: The rise time at V is measured between 1.3V and 2.3V. OUT performance. Consult factory for more information. 5532f 2 U WWW