MAX6605MXK+T

19-1840; Rev 3; 12/09 Low-Power Analog Temperature Sensor in SC70 Package Features ♦ Low Current Consumption (10µA max) The MAX6605 precision, low-power, analog output temperature sensor is available in a 5-pin SC70 package. The device has a +2.7V to +5.5V supply voltage range and 10µA supply current over the -55°C to +125°C temperature range. For the -40°C to +105°C temperature range, the supply voltage can go as low as +2.4V. Accuracy is ±0.75°C at TA = +25°C and ±3°C from 0°C to +70°C. ♦ Small SC70 Package ♦ Accurate (±0.75°C at TA = +25°C) ♦ Optimized to Drive Large Capacitive Loads Ordering Information The MAX6605 output voltage is dependent on its die temperature and has a slope of 11.9mV/°C and an offset of 744mV at 0°C. The output typically shows only +0.4°C of nonlinearity over the -20°C to +85°C temperature range. PART TEMP RANGE PIN-PACKAGE MAX6605MXK-T -55°C to +125°C 5 SC70-5 MAX6605MXK+T -55°C to +125°C 5 SC70-5 MAX6605MXK/V+T -40°C to +85°C 5 SC70-5 +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. /V denotes an automotive qualified part. ________________________Applications Cellular Phones Pin Configuration Battery Packs GPS Equipment TOP VIEW Digital Cameras VCC 1 A 2 5 GND 4 B MAX6605 OUT 3 SC70 Typical Application Circuit VCC VCC VDD B MAX6605 CS = 0.1μF A SHDN VCC MAX1106 OUT GND CPU CONVST I/O REFOUT SCLK I/O REFIN DOUT I/O IN+ 1nF IN– GND GND GND ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX6605 General Description MAX6605 Low-Power Analog Temperature Sensor in SC70 Package ABSOLUTE MAXIMUM RATINGS VCC to GND ..............................................................-0.3V to +6V OUT, A, B to GND ......................................-0.3V to (VCC + 0.3V) ESD Protection (Human Body Model) ............................> 2000V Current into Any Pin ............................................................10mA Output Short-Circuit Duration.....................................Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SC70 (derate 3.1mW/°C above +70°C) ..............245mW Operating Temperature Range .........................-55°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = +2.7V to +5.5V, CL = 1nF, TA = -55°C to +125°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TA = +25°C Temperature Error VOUT = 0.744 + (0.0119 × T°C) + (1.604 × 10-6 × T2)V (Note 2) Supply Voltage MAX TA = -0°C to +70°C -3.0 +3.0 TA = -20°C to +85°C -3.8 +3.8 TA = -40°C to +100°C -5.0 +5.0 TA = -55°C to +125°C -5.8 +5.8 TA = -55°C to +125°C 2.7 5.5 TA = -40°C to +105°C 2.4 5.5 VCC = +3.3V VCC TYP V IQ No load 4.5 Output Voltage VOUT TA = 0°C 744 mV TA = -20°C to +85°C 0.4 °C Sensor Gain (Average Slope) TA = -40°C to +100°C 11.1 Capacitive Load Required for stability 1 Load Regulation 11.9 10 °C Supply Current Nonlinearity 12.7 20 TA = -55°C, IOUT = -10µA to +10µA 20 _______________________________________________________________________________________ µA mV/°C nF TA = -20°C to +125°C, IOUT = -20µA to +20µA Note 1: All parameters are measured at TA = +25°C. Specifications over temperature range are guaranteed by design. Note 2: Error (expressed in °C) is defined as the difference between the calculated and measured values of output voltage. Guaranteed by design to 5 sigma. 2 UNITS ±0.75 m°C/µA Low-Power Analog Temperature Sensor in SC70 Package TEMPERATURE ERROR (°C) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -55 -35 -15 5 25 45 65 85 105 125 MAX6605 toc03 2 1 0 -55 -35 -15 5 25 45 65 0 85 105 125 1 2 3 4 5 SUPPLY VOLTAGE (V) SUPPLY CURRENT vs. TEMPERATURE OUTPUT VOLTAGE vs. SUPPLY VOLTAGE STEP-RESPONSE FROM +25°C TO +100°C (FLUORINERT BATH) 5 VCC = +3.3V 4 VCC = +2.4V 2 1.055 MAX6605 toc06 MAX6605 toc04 1.060 OUTPUT VOLTAGE (V) SUPPLY CURRENT (μA) 3 TEMPERATURE (°C) VCC = +5V 3 TA = +25°C 4 TEMPERATURE (°C) 7 6 5 MAX6605 toc05 OUTPUT VOLTAGE (V) 1.8 1.7 1.5 1.3 1.1 0.9 0.7 0.5 0.3 0.1 -0.1 -0.3 -0.5 -0.7 -0.9 -1.1 -1.3 SUPPLY CURRENT (μA) 2.0 6 MAX6605 toc02 MAX6605 toc01 2.2 SUPPLY CURRENT vs. SUPPLY VOLTAGE TEMPERATURE ERROR vs. TEMPERATURE OUTPUT VOLTAGE vs. TEMPERATURE 1.050 1.045 OUT 500mV/div 1.040 TA = +25°C 1.035 1.030 1 1.025 1.020 0 -55 -35 -15 5 25 45 65 TEMPERATURE (°C) 85 105 125 0 0 1 2 3 4 5 6 1s/div SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 3 MAX6605 Typical Operating Characteristics (VCC = +3.3V, CS = 0.1µF, CL = 1nF, unless otherwise noted.) Low-Power Analog Temperature Sensor in SC70 Package MAX6605 Pin Description PIN NAME FUNCTION 1 VCC Supply Input. Decouple with a 0.1µF capacitor to GND. 2 A Must be connected to GND. 3 OUT Temperature Sensor Output, CL ≥ 1nF 4 B Must be connected to VCC. 5 GND Ground Detailed Description The MAX6605 analog output temperature sensor’s output voltage is a linear function of its die temperature. The slope of the output voltage is 11.9mV/°C, and there is a 744mV offset at 0°C to allow measurement of negative temperatures. The MAX6605 has three terminals: VCC, GND, and OUT. The maximum supply current is 10µA, and the supply voltage range is from +2.4V to +5.5V for the -40°C to +105°C temperature range and +2.7V to +5.5V for the -55°C to +125°C temperature range. The temperature error is