INA193, INA194 INA195, INA196 INA197, INA198 SBOS307B − MAY 2004 − REVISED JUNE 2004 CURRENT SHUNT MONITOR −16V to 36V Common-Mode Range FEATURES DESCRIPTION D WIDE COMMON-MODE VOLTAGE: The INA193—INA198 family of current shunt monitors with voltage output can sense drops across shunts at common-mode voltages from −16V to +36V, independent of the INA19x supply voltage. They are available with three output voltage scales: 20V/V, 50V/V, and 100V/V. The 500kHz bandwidth simplifies use in current control loops. The INA193—INA195 provide identical functions but alternative pin configurations to the INA196—INA198 (respectively). D D D D D −16V to 36V LOW ERROR: 3.0% Over Temp (max) BANDWIDTH: Up to 500kHz THREE TRANSFER FUNCTIONS AVAILABLE: 20V/V, 50V/V, and 100V/V QUIESCENT CURRENT: 900µA (max) COMPLETE CURRENT SENSE SOLUTION The INA193—INA198 operate from a single +2.7V to +13.5V supply, drawing a maximum of 900µA of supply current. They are specified over the extended operating temperature range (−40°C to +125°C), and are offered in a space-saving SOT23 package. APPLICATIONS D D D D D D D WELDING EQUIPMENT NOTEBOOK COMPUTERS CELL PHONES TELECOM EQUIPMENT AUTOMOTIVE POWER MANAGEMENT BATTERY CHARGERS IS RS V IN+ Negative and Positive Common−Mode Voltage V+ V IN+ V IN − 5kΩ Load 5kΩ A1 A2 OUT = INA193 −INA198 IS RS R L 5kΩ RL 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. All trademarks are the property of their respective owners. Copyright 2004, Texas Instruments Incorporated ! ! www.ti.com "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +18V Analog Inputs, VIN+, VIN− Differential (VIN+) − (VIN−) . . . . . . . . . . . . . . . . . . . . . . −2V to +2V Common-Mode(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . −16V to +36V Analog Output, Out(2) . . . . . . . . . . . . . GND − 0.3V to (V+) + 0.3V Input Current Into Any Pin(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Operating Temperature . . . . . . . . . . . . . . . . . . . . . −55°C to +150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Lead Temperature (soldering, 10s) . . . . . . . . . . . . . . . . . . . . +300°C ESD Ratings Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4000V Charged-Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . 1000V (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 supported. (2) Input voltage at any pin may exceed the voltage shown if the current at that pin is limited to 5mA. 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. ORDERING INFORMATION PRODUCT PACKAGE-LEAD PACKAGE DESIGNATOR(1) SPECIFIED TEMPERATURE RANGE PACKAGE MARKING INA193 SOT23-5 DBV −40°C to +125°C BJJ INA194 SOT23-5 DBV −40°C to +125°C BJI INA195 SOT23-5 DBV −40°C to +125°C BJK INA196 SOT23-5 DBV −40°C to +125°C BJE INA197 SOT23-5 DBV −40°C to +125°C BJH INA198 SOT23-5 DBV −40°C to +125°C BJL ORDERING NUMBER INA193AIDBVT Tape and Reel, 250 INA193AIDBVR Tape and Reel, 3000 INA194AIDBVT Tape and Reel, 250 INA194AIDBVR Tape and Reel, 3000 INA195AIDBVT Tape and Reel, 250 INA195AIDBVR Tape and Reel, 3000 INA196AIDBVT Tape and Reel, 250 INA196AIDBVR Tape and Reel, 3000 INA197AIDBVT Tape and Reel, 250 INA197AIDBVR Tape and Reel, 3000 INA198AIDBVT Tape and Reel, 250 INA198AIDBVR Tape and Reel, 3000 (1) For the most current specification and package information, refer to our web site at www.ti.com. PIN ASSIGNMENTS INA193 INA194 INA195 OUT 1 GND 2 VIN+ 3 4 SOT23−5 2 INA196 INA197 INA198 5 V+ VIN− OUT 1 GND 2 V+ 3 TRANSPORT MEDIA, QUANTITY SOT23−5 5 VIN− 4 VIN+ "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 ELECTRICAL CHARACTERISTICS: VS = +12V Boldface limits apply over the specified temperature range, TA = −40°C to +125°C. All specifications at TA = +25°C, VS = +12V, VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. INA193, INA194, INA195 INA196, INA197, INA198 PARAMETER INPUT Full-Scale Input Voltage Common-Mode Input Range Common-Mode Rejection Over Temperature Offset Voltage, RTI Over Temperature vs Temperature vs Power Supply Input Bias Current, VIN− pin OUTPUT Gain: INA193, INA196 INA194, INA197 INA195, INA198 Gain Error Over Temperature Total Output Error(1) Over Temperature Nonlinearity Error Output Impedance Maximum Capacitive Load VOLTAGE OUTPUT(2) TEST CONDITIONS VSENSE VCM CMR MIN VSENSE = VIN+ − VIN− VIN+ = −16V to +36V VIN+ = +12V to +36V −16 80 100 VOS dVOS/dT PSR IB VS = +2.7V to +13.5V, VIN+ = +13.5V G VSENSE = 20mV to 100mV, TA = 25°C VSENSE = 20mV to 100mV TEMPERATURE RANGE Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Resistance, SOT23 UNIT 0.15 (VS − 0.2)/Gain 36 V V dB dB mV mV µV/°C µV/V µA 94 120 ±0.5 0.5 2.5 5 +8 ±0.75 ±1 ±0.002 1.5 10 VSENSE = 20mV to 100mV RO No Sustained Oscillation 2 3 100 +16 ±1 ±2 ±2.2 ±3 ±0.1 V/V V/V V/V % % % % % Ω nF RL = 100kΩ to GND (V+) − 0.1 (VGND) + 3 BW tS CLOAD = 5pF CLOAD = 5pF CLOAD = 5pF CLOAD < 10nF VSENSE = 10mV to 100mVPP, CLOAD = 5pF NOISE, RTI Voltage Noise Density POWER SUPPLY Operating Range Quiescent Current Over Temperature MAX 20 50 100 ±0.2 Swing to V+ Power Supply Rail Swing to GND(3) FREQUENCY RESPONSE Bandwidth, INA193, INA196 INA194, INA197 INA195, INA198 Phase Margin Settling Time (1%) TYP VS IQ kHz kHz kHz degrees µs 40 nV/√Hz 700 370 −40 −55 −65 qJA V mV 500 300 200 40 2 +2.7 VOUT = 2V VSENSE = 0mV (V+) − 0.2 (VGND) + 50 200 +13.5 900 950 V µA µA +125 +150 +150 °C °C °C °C/W (1) Total output error includes effects of gain error and V . OS (2) See Typical Characteristics curve Output Swing vs Output Current. (3) Specified by design. 3 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 TYPICAL CHARACTERISTICS All specifications at TA = +25°C, VS = +12, and VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. GAIN vs FREQUENCY GAIN vs FREQUENCY 45 45 G = 50 35 Gain (dB) 30 G = 100 40 G = 50 35 Gain (dB) CLOAD = 1000pF G = 100 40 G = 20 25 20 30 20 15 15 10 10 5 G = 20 25 5 10k 100k 10k 1M 100k Frequency (Hz) COMMON−MODE AND POWER−SUPPLY REJECTION vs FREQUENCY OUTPUT ERROR vs VSENSE 4.0 140 120 Output Error (% error of the ideal output value) Common−Mode and Power−Supply Rejection (dB) 130 CMR 110 100 90 PSR 80 70 60 50 3.5 3.0 2.5 2.0 1.5 1.0 0.5 40 0 10 100 1k 10k 0 100k 50 100 150 12 11 0.08 10 9 Output Voltage (V ) Output Error (% ) 0.1 0.09 0.06 0.05 0.04 0.03 0.02 −16 −12 −8 −4 4 8 12 16 20 24 28 32 36 Common−Mode Voltage (V) 450 500 Sourcing Current +25_C 8 −40_C +125_ C 7 6 VS = 3V 5 Sourcing Current +25_C 4 −40_C Output stage is designed to source current. Current sinking capability is approximately 400µA. 3 1 0 0 350 400 VS = 12V 2 0.01 4 250 300 POSITIVE OUTPUT VOLTAGE SWING vs OUTPUT CURRENT OUTPUT ERROR vs COMMON−MODE VOLTAGE 0.07 200 VSENSE (mV) Frequency (Hz) 0 1M Frequency (Hz) +125_ C 0 5 10 15 20 Output Current (mA) 25 30 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 TYPICAL CHARACTERISTICS (continued) All specifications at TA = +25°C, VS = +12, and VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. QUIESCENT CURRENT vs COMMON−MODE VOLTAGE QUIESCENT CURRENT vs OUTPUT VOLTAGE 875 1000 900 VSENSE = 100mV: VS = 12V 775 VS = 2.7V 700 675 600 575 IQ (µA) IQ (µA) 800 500 400 475 VS = 12V 300 375 200 VSENSE = 0mV: VS = 2.7V 275 100 0 0 1 2 3 4 5 6 7 8 9 10 175 −16 −12 −8 −4 0 4 OUTPUT SHORT−CIRCUIT CURRENT vs SUPPLY VOLTAGE 12 16 30 G = 20 Output Voltage (50mV/div) +25_ C 26 20 24 28 32 36 STEP RESPONSE −40_C +125_ C 22 18 14 10 VSENSE = 10mV to 20mV 6 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 Time (2µs/div) Supply Voltage (V) STEP RESPONSE STEP RESPONSE G = 20 G = 20 Output Voltage (50mV/div) Output Voltage (500mV/div) Output Short−Circuit Current (mA) 34 8 VCM (V) Output Voltage (V) VSENSE = 10mV to 100mV Time (2µs/div) VSENSE = 90mV to 100mV Time (2µs/div) 5 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 TYPICAL CHARACTERISTICS (continued) All specifications at TA = +25°C, VS = +12, and VIN+ = 12V, and VSENSE = 100mV, unless otherwise noted. STEP RESPONSE STEP RESPONSE G = 50 Output Voltage (1V/div) Output Voltage (100mV/div) G = 50 VSENSE = 10mV to 100mV VSENSE = 10mV to 20mV Time (5µs/div) Time (5µs/div) STEP RESPONSE STEP RESPONSE G = 100 Output Voltage (2V/div) Output Voltage (100mV/div) G = 50 VSENSE = 90mV to 100mV Time (5µs/div) 6 VSENSE = 10mV to 100mV Time (10µs/div) "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 APPLICATIONS INFORMATION BASIC CONNECTION Figure 1 shows the basic connection of the INA19x. The input pins, VIN+ and VIN−, should be connected as closely as possible to the shunt resistor to minimize any resistance in series with the shunt resistance. Power-supply bypass capacitors are required for stability. Applications with noisy or high impedance power supplies may require additional decoupling capacitors to reject power-supply noise. Connect bypass capacitors close to the device pins. RS VIN+ −16V to +36V IS 5kΩ SELECTING RS The value chosen for the shunt resistor, RS, depends on the application and is a compromise between small-signal accuracy and maximum permissible voltage loss in the measurement line. High values of RS provide better accuracy at lower currents by minimizing the effects of offset, while low values of RS minimize voltage loss in the supply line. For most applications, best performance is attained with an RS value that provides a full-scale shunt voltage range of 50mV to 100mV. Maximum input voltage for accurate measurements is 500mV. TRANSIENT PROTECTION +2.7V to +13.5V VIN+ voltage is up to +36V. The output voltage range of the OUT terminal, however, is limited by the voltages on the power-supply pin. VIN− Load V+ 5kΩ OUT INA193 −INA198 The −16V to +36V common-mode range of the INA19x is ideal for withstanding automotive fault conditions ranging from 12V battery reversal up to +36V transients, since no additional protective components are needed up to those levels. In the event that the INA19x is exposed to transients on the inputs in excess of its ratings, then external transient absorption with semiconductor transient absorbers (zeners or Transzorbs) will be necessary. Use of MOVs or VDRs is not recommended except when they are used in addition to a semiconductor transient absorber. Select the transient absorber such that it will never allow the INA19x to be exposed to transients greater than +36V (that is, allow for transient absorber tolerance, as well as additional voltage due to transient absorber dynamic impedance). Despite the use of internal zener-type ESD protection, the INA19x does not lend itself to using external resistors in series with the inputs since the internal gain resistors can vary up to ±30%. (If gain accuracy is not important, then resistors can be added in series with the INA19x inputs with two equal resistors on each input.) OUTPUT VOLTAGE RANGE Figure 1. INA19x Basic Connection POWER SUPPLY The input circuitry of the INA19x can accurately measure beyond its power-supply voltage, V+. For example, the V+ power supply can be 5V, whereas the load power-supply The output of the INA19x is accurate within the output voltage swing range set by the power supply pin, V+. This is best illustrated when using the INA195 or INA198 (which are both versions using a gain of 100), where a 100mV full-scale input from the shunt resistor requires an output voltage swing of +10V, and a power-supply voltage sufficient to achieve +10V on the output. 7 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 INPUT FILTERING An obvious and straightforward location for filtering is at the output of the INA19x series; however, this location negates the advantage of the low output impedance of the internal buffer. The only other option for filtering is at the input pins of the INA19x, which is complicated by the internal 5kΩ + 30% input impedance; see Figure 2. Using the lowest possible resistor values minimizes both the initial shift in gain and effects of tolerance. The effect on initial gain is given by: ǒ GainError% + 100 * 100 Ǔ 5kW 5kW ) RFILT (1) Total effect on gain error can be calculated by replacing the 5kΩ term with 5kΩ − 30%, (or 3.5kΩ) or 5kΩ + 30% (or 6.5kΩ). The tolerance extremes of RFILT can also be inserted into the equation. If a pair of 100Ω 1% resistors are used on the inputs, the initial gain error will be 1.96%. Worst-case tolerance conditions will always occur at the lower excursion of the internal 5kΩ resistor (3.5kΩ), and the higher excursion of RFILT − 3% in this case. Note that the specified accuracy of the INA19x must then be combined in addition to these tolerances. While this discussion treated accuracy worst-case conditions by combining the extremes of the resistor values, it is appropriate to use geometric mean or root sum square calculations to total the effects of accuracy variations. RSHUNT << RFILTER LOAD VSUPPLY RFILTER < 100 RFILTER < 100 CFILTER f−3dB f−3dB = 1 2π (2 RFILTER) CFILTER +5V VIN+ 5kΩ VIN− V+ 5kΩ OUT INA193 −INA198 Figure 2. Input Filter (Gain Error − 1.5% to −2.2%) 8 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 INSIDE THE INA19x The INA19x uses a new, unique internal circuit topology that provides common-mode range extending from −16V to +36V while operating from a single power supply. The common-mode rejection in a classic instrumentation amp approach is limited by the requirement for accurate resistor matching. By converting the induced input voltage to a current, the INA19x provides common-mode rejection that is no longer a function of closely matched resistor values, providing the enhanced performance necessary for such a wide common-mode range. A simplified diagram (see Figure 3) shows the basic circuit function. When the common-mode voltage is positive, amplifier A2 is active. The differential input voltage, (VIN+) − (VIN−) applied across RS, is converted to a current through a 5kΩ resistor. This current is converted back to a voltage through RL, and then amplified by the output buffer amplifier. When the common-mode voltage is negative, amplifier A1 is active. The differential input voltage, (VIN+) − (VIN−) applied across RS, is converted to a current through a 5kΩ resistor. This current is sourced from a precision current mirror whose output is directed into RL converting the signal back into a voltage and amplified by the output buffer amplifier. Patent-pending circuit architecture ensures smooth device operation, even during the transition period where both amplifiers A1 and A2 are active. IS RS VIN+ Negative and Positive Common−Mode Voltage V+ VIN+ VIN− 5kΩ Load 5kΩ A1 A2 OUT = INA193 −INA198 ISRSRL 5kΩ RL Figure 3. INA19x Simplified Circuit Diagram 9 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 RSHUNT LOAD +12V I1 +5V VIN+ 5kΩ VIN− V+ 5kΩ V+ OUT for +12V Common−Mode INA193 −INA198 5kΩ 5kΩ GND OUT for −12V Common−Mode INA193 −INA198 VIN+ VIN− GND RSHUNT −12V LOAD I2 Figure 4. Monitor Bipolar Output Power-Supply Current 10 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 RSHUNT LOAD VSUPPLY +5V VIN+ 5kΩ VIN− +5V VIN+ V+ 5kΩ VIN− 5kΩ V+ 5kΩ +5V INA152 40kΩ OUT INA193 −INA198 40kΩ OUT VOUT INA193 −INA198 40kΩ 40kΩ +2.5V VREF Figure 5. Bi-directional Current Monitoring Up to +36V RSHUNT Solenoid VIN+ 5kΩ +2.7V to +13.5V VIN− V+ 5kΩ OUT INA193 −INA198 Figure 6. Inductive Current Monitor Including Flyback 11 "#$% "#& "#'% "#( "#)% "#* www.ti.com SBOS307B − MAY 2004 − REVISED JUNE 2004 VIN+ VIN− 5kΩ V+ 5kΩ For output signals > comparator trip−point. R1 OUT TLV3012 INA193 −INA198 R2 1.25V Internal Reference (a) INA19x output adjusted by voltage divider. VIN+ VIN− 5kΩ REF V+ 5kΩ OUT TLV3012 INA193 −INA198 R1 (b) Comparator reference voltage adjusted by voltage divider. R2 For use with small output signals. Figure 7. INA19x With Comparator 12 REF 1.25V Internal Reference PACKAGE OPTION ADDENDUM www.ti.com 9-Dec-2004 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty INA193AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU NIPDAU Level-3-260C-168 HR INA193AIDBVT ACTIVE SOT-23 DBV 5 250 None CU NIPDAU Level-3-260C-168 HR INA194AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU Level-3-260C-168 HR INA194AIDBVT ACTIVE SOT-23 DBV 5 250 None CU Level-3-260C-168 HR INA195AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU Level-3-260C-168 HR Lead/Ball Finish MSL Peak Temp (3) INA195AIDBVT ACTIVE SOT-23 DBV 5 250 None CU Level-3-260C-168 HR INA196AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU NIPDAU Level-3-260C-168 HR INA196AIDBVT ACTIVE SOT-23 DBV 5 250 None CU NIPDAU Level-3-260C-168 HR INA197AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU NIPDAU Level-3-260C-168 HR INA197AIDBVT ACTIVE SOT-23 DBV 5 250 None CU NIPDAU Level-3-260C-168 HR INA198AIDBVR ACTIVE SOT-23 DBV 5 3000 None CU NIPDAU Level-3-260C-168 HR INA198AIDBVT ACTIVE SOT-23 DBV 5 250 None CU NIPDAU Level-3-260C-168 HR (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. 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