LT5534ESC6

LT5534 LINER

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n RF Frequency Range: 50MHz to 3GHz n Linear Dynamic Range: 60dB n Exceptional Accuracy over Temperature and Power Supply n Fast Transient Response: 38ns Full-Scale Settling Time n Single 2.7V to 5.25V Supply n Low Supply Current: 7mA n Shutdown Current: 0.1mA n Tiny 6-Lead SC70 Package n RF Receive Power Management n RF Power Control n CATV Power Detection n Optical Receiver Gain Control 50MHz to 3GHz RF Power Detector DESCRIPTIO UFEATURES APPLICATIO SU The LT 5534 is a 50MHz to 3GHz monolithic RF power detector capable of measuring RF signals over a 60dB dynamic range. The RF signal in a decibel scale is precisely converted into DC voltage on a linear scale. The 60dB input dynamic range is achieved using cascaded RF detectors and 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. , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO U DETDETDETDETDET RF 1nF EN 47Ω ENABLE RF INPUT VOUT VCC GND 100pF LT5534 0.1µF VOUT

5534 TA01

RF INPUT POWER (dBm) –60 VOUT (V) LINEARITY ERROR (dB) 0.4 0.8 1.2 1.6 2.4 –50 –40 –30 –20

5534 G05

–10 0 2.0 TA = 25°C TA = 85°C TA = –40C VCC = 3V AT 900MHz Output Voltage vs RF Input Power

(Note 1) Operating Ambient Temperature Range .. – 40°C to 85°C LT5534ESC6 TJMAX = 125°C, qJA = 256°C/W ABSOLUTE MAXIMUM RATINGSW WW U PACKAGE/ORDER INFORMATIONW UU Consult LTC Marketing for parts specified with wider operating temperature ranges. EN 1 GND 2 VOUT 3 6 RF

5 GND

ELECTRICAL CHARACTERISTICSVCC = 3V, EN = 3V, TA = 25°C, source impedance = 50W , unless otherwise noted. Test circuit shown in Figure 1. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS RF Input Frequency Range 50 to 3000 MHz Input Impedance 2k W fRF = 50MHz RF Input Power Range –58 to +2 dBm Dynamic Range (Note 3) –3dB Linearity Error, TA = –40°C to 85°C6 0 d B Output Slope 44 mV/dB Output Variation vs Temperature P IN = –48dBm to –14dBm, TA = –40°C to 85°C 0.007 dB/ °C fRF = 900MHz RF Input Power Range –60 to 0 dBm Dynamic Range (Note 3) –3dB Linearity Error, TA = –40°C to 85°C6 0 d B Output Slope 41 mV/dB Output Variation vs Temperature P IN = –48dBm to –14dBm, TA = –40°C to 85°C 0.008 dB/ °C fRF = 1900MHz RF Input Power Range –63 to –2 dBm Dynamic Range (Note 3) –3dB Linearity Error, TA = –40°C to 85°C6 1 d B Output Slope 31 36.6 43 mV/dB Output Variation vs Temperature P IN = –48dBm to –14dBm, TA = –40°C to 85°C 0.012 dB/ °C Output Intercept 50 W External Termination, TA = –40°C to 85°C –70 –64 –58 dBm fRF = 2500MHz RF Input Power Range –63 to –3 dBm Dynamic Range (Note 3) –3dB Linearity Error, TA = –40°C to 85°C6 0 d B Output Slope 35 mV/dB Output Variation vs Temperature P IN = –48dBm to –14dBm, TA = –40°C to 85°C 0.025 dB/ °C Output Interface Output DC Voltage No RF Input Signal 30 142 240 mV Output Impedance 32 W Output Bandwidth 30 MHz Full-Scale Setting Time Input from No Signal to –2dBm, to 90% 38 ns Sourcing/Sinking 10/200 mA/ mA

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Specifications over the –40°C to 85°C temperature range are assured by design, characterization and correlation with statistical process control. Note 3: The linearity error is calculated by the difference between the incremental slope of the output and the average output slope from –48dBm to –14dBm. The dynamic range is defined as the range over which the linearity error is within –3dB. TYPICAL PERFOR A CE CHARACTERISTICS UW Output Voltage vs Frequency RF INPUT POWER (dBm) –70 1.6 2.0 2.8 –40 –20

5534 G01

1.2 0.8 –60 –50 –30 –10 0 0.4 2.4 VOUT (V) VCC = 3V TA = 25°C 50MHz 1.9GHz 2.5GHz 900MHz RF INPUT POWER (dBm) –70 LINEARITY ERROR (dB) –40 –20

5534 G02

–60 –50 –30 –10 0 50MHz VCC = 3V TA = 25°C 900MHz 1.9GHz 2.5GHz RF INPUT POWER (dBm) –60 VOUT (V) LINEARITY ERROR (dB) 0.4 0.8 1.2 1.6 2.4 –50 –40 –30 –20

5534 G03

–10 0 2.0 TA = 25°C TA = 85°C TA = –40C VCC = 3V AT 50MHz Linearity Error vs Frequency Output Voltage vs RF Input Power PARAMETER CONDITIONS MIN TYP MAX UNITS Power Up/Down Turn-On Time 200 ns Turn-Off Time 800 ns EN = High (On) 0.9 V EN = Low (Off) 0.6 V Power Supply Supply Voltage 2.7 5.25 V Supply Current EN = High 5 7 9 mA Shutdown Current EN = Low 0.1 10 mA ELECTRICAL CHARACTERISTICSVCC = 3V, EN = 3V, TA = 25°C, unless otherwise noted. Test circuit shown in Figure 1. (Note 2) VOUT Variation vs RF Input Power RF INPUT POWER (dBm) –60 VOUT VARIATION (dB) –50 –40 –30 –20

5534 G04

–10 0 TA = –40°C TA = 85°C VCC = 3V AT 50MHz NORMALIZED AT 25°C RF INPUT POWER (dBm) –60 VOUT (V) LINEARITY ERROR (dB) 0.4 0.8 1.2 1.6 2.4 –50 –40 –30 –20 –10 0 2.0 TA = 25°C TA = 85°C TA = –40C VCC = 3V AT 900MHz RF INPUT POWER (dBm) –60 VOUT VARIATION (dB) –50 –40 –30 –20

5534 G06

–10 0 TA = –40°C TA = 85°C VCC = 3V AT 900MHz NORMALIZED AT 25°C Output Voltage vs RF Input Power V OUT Variation vs RF Input Power (Test circuit shown in Figure 1)

TYPICAL PERFOR A CE CHARACTERISTICS UW RF INPUT POWER (dBm) –60 VOUT (V) LINEARITY ERROR (dB) 0.4 0.8 1.2 1.6 2.4 –50 –40 –30 –20

5534 G07

–10 0 2.0 TA = 25°C TA = 85°C TA = –40C VCC = 3V AT 1.9GHz RF INPUT POWER (dBm) –60 VOUT VARIATION (dB) –50 –40 –30 –20

5534 G08

–10 0 TA = –40°C TA = 85°C VCC = 3V AT 1.9GHz NORMALIZED AT 25°C RF INPUT POWER (dBm) –60 VOUT (V) LINEARITY ERROR (dB) 0.4 0.8 1.2 1.6 2.4 –50 –40 –30 –20

5534 G09

–10 0 2.0 TA = 25°C TA = 85°C TA = –40C VCC = 3V AT 2.5GHz Output Voltage vs RF Input Power V OUT Variation vs RF Input Power Output Voltage vs RF Input Power Output Voltage Distribution vs TemperatureVOUT Variation vs RF Input Power Output Voltage vs RF Input Power at VCC = 3V and 5V RF INPUT POWER (dBm) –60 VOUT VARIATION (dB) –50 –40 –30 –20

5534 G10

–10 0 TA = –40°C TA = 85°C VCC = 3V AT 2.5GHz NORMALIZED AT 25°C RF INPUT POWER (dBm) –60 1.6 2.0 2.8 –40 –20

5534 G11

1.2 0.8 –50 –30 –10 0 0.4 2.4 VOUT (V) TA = 25°C 50MHz VCC = 3V, 5V 1.9GHz V CC = 3V, 5V Supply Voltage vs Supply Current SUPPLY VOLTAGE (V) 2.5 SUPPLY CURRENT (mA) 3 3.5 4 4.5

5530 G14

5 5.5 TA = 85°C TA = 25°C TA = –40°C (Test circuit shown in Figure 1) VOUT (V) PERCENTAGE DISTRIBUTION (%)5 0.54 0.62 0.66

5534 G12

RF PIN = –48dBm AT 1.9GHz VCC = 3V TA = 25°C TA = –40°C TA = 85°C Output Voltage Distribution vs Temperature VOUT (V) PERCENTAGE DISTRIBUTION (%)5 1.79 1.87 1.91

5534 G13

TA = 25°C TA = –40°C TA = 85°C RF PIN = –14dBm AT 1.9GHz VCC = 3V

EN (Pin 1): Enable. When the input voltage is higher than 0.9V, the circuit is completely turned on. When the input voltage is less than 0.6V, the circuit is turned off. GND (Pins 2, 5): Ground. V OUT (Pin 3): RF Detector Output. VCC (Pin 4): Power Supply. This pin should be decoupled using 100pF and 0.1mF capacitors. RF (Pin 6): RF input. This pin is internally biased to VCC – 0.18V. A coupling capacitor must be used to connect to the RF signal source. BLOCK DIAGRA W EN VREF VOUT 5534 BD VCC OFFSET COMP DETDET BIAS RF LIMITER DETDETDET RF GND 2 5 1 3RF LIMITERRF LIMITERRF LIMITER TYPICAL PERFOR A CE CHARACTERISTICS UW RF Input Return Loss vs Frequency Output Transient Response RF INPUT FREQUENCY (GHz) –30 RETURN LOSS (dB) –25 –20 –15 –10 0.5 1 1.5 2

5534 G15

2.5 3 50ns/DIV 1V/DIV

5534 G16

(Test circuit shown in Figure 1)

Figure 2. Component Side Silkscreen of Evaluation Board Figure 3. Component Side Layout of Evaluation Board

5534 F01

Figure 1. Evaluation Circuit Schematic typically within –1dB over a 47dB dynamic range at 1.9GHz.

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. able, the overall linear dynamic range remains the same. charging current available to the output load is about 200mA. Table 1. RF Input Impedance Performance Characteristics section. Table 2. Resistor Value for Capacitive Output input port, the output voltage swing can be as high as 2.4V. Figure 4. Simplified Circuit Schematic

5534 F04

ª LINEAR TECHNOLOGY CORPORATION 2004 LT/TP 0404 1K • PRINTED IN THE USA PART NUMBER DESCRIPTION COMMENTS LT5504 800MHz to 2.7GHz RF Measuring Receiver 80dB Dynamic Range, Temperature Compensated, 2.7V to 5.25V Supply LT5506 500MHz Quadrature IF Demodulator with VGA 1.8V to 5.25V Supply, 40MHz to 500MHz IF, –4dB to 57dB Linear Power Gain, 8.8MHz Baseband Bandwidth LT5511 High Linearity Upconverting Mixer RF Output to 3GHz, 17dBm IIP3, Integrated LO Buffer LT5512 DC-3GHz High Signal Level Downconverting Mixer DC to 3GHz, 21dBm IIP3, Integrated LO Buffer LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator 20dBm IIP3, Integrated LO Quadrature Generator LT5516 0.8GHz to 1.5GHz Direct Conversion Quadrature Demodulator 21.5dBm IIP3, Integrated LO Quadrature Generator LT5517 40MHz to 900MHz Direct Conversion Quadrature Demodulator 21dBm IIP3, Integrated LO Quadrature Generator LT5519 0.7GHz to 1.4GHz High Linearity Upconverting Mixer 17.1dBm IIP3, 50 W Single Ended RF and LO Ports LT5520 1.3GHz to 2.3GHz High Linearity Upconverting Mixer 15.9dBm IIP3, 50 W Single Ended RF and LO Ports LT5522 600MHz to 2.7GHz High Linearity Downconverting Mixer 4.5V to 5.25V Supply, 25dBm IIP3 at 900MHz, NF = 12.5dB, 50W Single Ended RF and LO Ports LTC 5532 300MHz to 7GHz Precision RF Power Detector Precision V OUT Offset Control, Adjustable Gain and Offset LT5546 500MHz Quadrature IF Demodulator with VGA and 17MHz 17MHz Baseband Bandwidth, 40MHz to 500MHz IF, 1.8V to 5.25V Baseband Bandwidth Supply, –7dB to 56dB Linear Power Gain RELATED PARTS 6-Lead Plastic SC70 (Reference LTC DWG # 05-08-1638) UPACKAGE DESCRIPTIO 1.15 – 1.35 0.15 – 0.30

6 PLCS (NOTE 3)

0.10 – 0.18 (NOTE 3) SC6 SC70 0802 1.80 – 2.20 (NOTE 4)

0.65 BSC

0.80 – 1.00

1.00 MAX

0.00 – 0.10 REF 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

3.26 MAX

0.47 MAX 0.65 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.96 MIN2.1 REF

1.16 REF

(NOTE 6) 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. DETAILS OF THE PIN 1 INDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE INDEX AREA 7. EIAJ PACKAGE REFERENCE IS EIAJ SC-70 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 l FAX: (408) 434-0507 l www.linear.com