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INA330 Dataheets PDF



Part Number INA330
Manufacturers Burr-Brown Corporation
Logo Burr-Brown Corporation
Description THERMISTOR SIGNAL AMPLIFIER
Datasheet INA330 DatasheetINA330 Datasheet (PDF)

INA330 INA330 SBOS260 – NOVEMBER 2002 THERMISTOR SIGNAL AMPLIFIER FOR TEMPERATURE CONTROL FEATURES q OPTIMIZED FOR PRECISION 10kΩ THERMISTOR APPLICATIONS q LOW OFFSET OVER TEMPERATURE: 0.009°C Temperature Error, –40°C to +85°C q EXCELLENT LONG-TERM STABILITY q VERY LOW 1/f NOISE: (0.01Hz to 10Hz) (Peak-to-Peak Equivalent to 0.0001°C) q WIDE OUTPUT SWING: Within 10mV of Rails q SUPPLY RANGE: Single +2.7V to +5.5V q microPACKAGE: MSOP-10 q REQUIRES ONLY ONE PRECISION RESISTOR APPLICATIONS q THERM.

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INA330 INA330 SBOS260 – NOVEMBER 2002 THERMISTOR SIGNAL AMPLIFIER FOR TEMPERATURE CONTROL FEATURES q OPTIMIZED FOR PRECISION 10kΩ THERMISTOR APPLICATIONS q LOW OFFSET OVER TEMPERATURE: 0.009°C Temperature Error, –40°C to +85°C q EXCELLENT LONG-TERM STABILITY q VERY LOW 1/f NOISE: (0.01Hz to 10Hz) (Peak-to-Peak Equivalent to 0.0001°C) q WIDE OUTPUT SWING: Within 10mV of Rails q SUPPLY RANGE: Single +2.7V to +5.5V q microPACKAGE: MSOP-10 q REQUIRES ONLY ONE PRECISION RESISTOR APPLICATIONS q THERMISTOR-BASED TEMPERATURE CONTROLLERS FOR OPTICAL NETWORKING q HIGH ACCURACY FOR TEC APPLICATIONS q LASER TEMPERATURE CONTROL DESCRIPTION The INA330 is a precision amplifier designed for thermoelectric cooler (TEC) control in optical networking applications. It is optimized for use in 10kΩ thermistor-based temperature controllers. The INA330 provides thermistor excitation and generates an output voltage proportional to the difference in resistances applied to the inputs. It uses only one precision resistor plus the thermistor, thus providing an alternative to the traditional bridge circuit. This new topology eliminates the need for two precision resistors while maintaining excellent accuracy for temperature control applications. An excitation voltage is applied to the thermistor (RTHERM) and precision resistor (RSET), creating currents I1 and I2. The current conveyor circuit produces an output current, IO, equal to I1 – I2, which flows through the external gain-setting resistor. A buffered voltage output proportional to IO is also provided. The INA330 offers excellent long-term stability, and very low 1/f noise throughout the life of the product. The low offset results in a 0.009°C temperature error from –40°C to +85°C. It comes in MSOP-10 packaging and operates with supply voltages from +2.7V to +5.5V. It is specified over the industrial temperature range, –40°C to +85°C, with operation from –40°C to +125°C. VEXCITE 1V V2 2 V1 3 V+ 95 Enable High = On Low = Off 6 8 VO PID CONTROLLER VREF 2.5V I1 Thermistor RTHERM = 10kΩ 10 1 I2 RSET 10kΩ 7 IO = I1 – I2 4 CFILTER 500pF RG 200kΩ VADJUST = +2.5V D/A Converter INA330 In A Temperature Control Loop Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. www.ti.com Copyright © 2002, Texas Instruments Incorporated ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage .................................................................................. +5.5V Signal Input Terminals: (Pins 1, 2, 3, 6, and 10) Voltage(2) ......................... –0.5V to (V+) + 0.5V Current(2) ............................................... ±10mA Output Short-Circuit(3) .............................................................. Continuous Operating Temperature Range ....................................... –40°C to +125°C Storage Temperature Range .......................................... –65°C to +150°C Junction Temperature .................................................................... +150°C Lead Temperature (soldering, 10s) ............................................... +300°C NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. (2) Input terminals are diode clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current limited to 10mA or less. (3) Short-circuit to ground. ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PACKAGE/ORDERING INFORMATION PRODUCT INA330 " PACKAGE-LEAD MSOP-10 " PACKAGE DESIGNATOR(1) DGS " SPECIFIED TEMPERATURE RANGE –40°C to +85°C " PACKAGE MARKING TLB " NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com. ORDERING NUMBER INA330AIDGST INA330AIDGSR TRANSPORT MEDIA, QUANTITY Tape and Reel, 250 Tape and Reel, 2500 PIN CONFIGURATION Top View MSOP I2 (RSET) 1 V2 2 V1 3 GND 4 (Connect t.


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