SINGLE-SUPPLY OPERATIONAL AMPLIFIERS MicroAmplifier Series

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1 SSOP Quad (Obsolete) SO Single/Dual MSOP Dual SOT 3 Single OPA37 OPA37 OPA37 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 SINGLE-SUPPLY OPERATIONAL AMPLIFIERS MicroAmplifier Series FEATURES MICRO-SIZE, MINIATURE PACKAGES: Single: SOT3-, SO- Dual: MSOP-, SO- Quad: SSOP- (Obsolete) LOW OFFSET VOLTAGE: 7µV max WIDE SUPPLY RANGE: Single Supply: +.7V to +3V Dual Supply:.3V to V LOW QUIESCENT CURRENT: 3µV max WIDE BANDWIDTH:.MHz APPLICATIONS Out V BATTERY-POWERED INSTRUMENTS PORTABLE DEVICES PCMCIA CARDS MEDICAL INSTRUMENTS TEST EQUIPMENT OPA37 V+ DESCRIPTION The OPA37 op amp family is one of Texas Instruments MicroAmplifier series of miniature products. In addition to small size, these devices feature low offset voltage, low quiescent current, low bias current, and a wide supply range. Single, dual, and quad versions have identical specifications for maximum design flexibility. They are ideal for single-supply, battery-operated, and space-limited applications, such as PCMCIA cards and other portable instruments. OPA37 series op amps can operate from either single or dual supplies. When operated from a single supply, the input common-mode range extends below ground and the output can swing to within mv of ground. Dual and quad designs feature completely independent circuitry for lowest crosstalk and freedom from interaction. Single, dual, and quad are offered in space-saving surface-mount packages. The single version is available in the ultra-miniature -lead SOT3- and SO- surface-mount. The dual version comes in a miniature MSOP- and SO- surface-mount. The quad version is obsolete. MSOP- has the same lead count as a SO- but half the size. The SOT3- is even smaller at one-fourth the size of an SO-. All are specified for C to + C operation. A macromodel is available for design analysis. +In 3 In SOT3 OPA37 NC OPA37 NC Out A OPA37 V+ Out A In A +In A 3 A D Out D In D +In D In 7 V+ In A A 7 Out B V+ 3 V +In V 3 Output NC +In A V 3 B In B +In B +In B In B B C +In C In C SO SO, MSOP Out B NC 7 9 Out C NC MicroAmplifier is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. SSOP 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. Copyright 99-7, Texas Instruments Incorporated

2 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 ABSOLUTE MAXIMUM RATINGS () Supply Voltage, V+ to V V Input Voltage (V ).7V to (V+) +.7V Output Short-Circuit() Continuous Operating Temperature Range C to + C Storage Temperature Range C to + C Junction Temperature Range C () 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. 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. () Short circuit to ground, one amplifier per package. PACKAGE/ORDERING INFORMATION () PRODUCT PACKAGE LEAD PACKAGE DRAWING PACKAGE MARKING Single OPA37NA SOT3- DBV A37A OPA37UA SO- D OPA37UA Dual OPA37EA MSOP- DGK B37A OPA37UA SO- D OPA37UA Quad () OPA37UA SSOP- DBQ OPA37UA () For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at. () Quad version is obsolete.

3 ELECTRICAL CHARACTERISTICS: V S = +V Boldface limits apply over the specified temperature range, T A = C to + C. At T A = + C, V S = +V, R L = kω, connected to V S /, unless otherwise noted. SBOS7A OCTOBER 99 REVISED FEBRUARY 7 OPA37UA, NA OPA37UA, EA OPA37UA PARAMETER CONDITIONS MIN TYP MAX UNITS OFFSET VOLTAGE Input Offset Voltage V CM =.V ± ±7 µv vs Temperature() Specified Temperature Range µv/ C vs Power Supply (PSRR) V S = +.7V to +3V 3 µv/v Channel Separation (dual and quad). µv/v INPUT BIAS CURRENT Input Bias Current() V CM =.V na Input Offset Current V CM =.V ±. ± na NOISE Input Voltage Noise, f =. to Hz µv PP Input Voltage Noise Density, f = khz nv/ Hz Current Noise Density, f = khz fa/ Hz INPUT VOLTAGE RANGE Common-Mode Voltage Range. (V+). V Common-Mode Rejection Ratio V CM =.V to 3.V 7 db INPUT IMPEDANCE Differential Ω pf Common-Mode 9 Ω pf OPEN-LOOP GAIN Open-Loop Voltage Gain V O =.V to V db FREQUENCY RESPONSE Gain-Bandwidth Product. MHz Slew Rate G =. V/µs Settling Time,.% G =, 3V Step, C L = pf µs OUTPUT.% G =, 3V Step, C L = pf µs Voltage Output, Positive R L = kω to Ground (V+) (V+).7 V Negative R L = kω to Ground.. V Positive R L = kω to.v (V+) (V+).7 V Negative R L = kω to.v.. V Positive R L = kω to.v (V+) (V+).7 V Negative R L = kω to.v..3 V Short-Circuit Current /+ ma Capacitive Load Drive (stable operation) POWER SUPPLY See Typical Characteristic Curves Specified Operating Voltage + V Operating Range V Quiescent Current (per amplifier) 7 3 µa TEMPERATURE RANGE Specified Range + C Operating Range + C Storage Range + C Thermal Resistance, JA SOT3- C/W MSOP- C/W SSOP- (Obsolete) C/W SO- C/W () Specified by wafer-level test to 9% confidence. () Positive conventional current flows into the input terminals. 3

4 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 ELECTRICAL CHARACTERISTICS: V S = +.7V Boldface limits apply over the specified temperature range, T A = C to + C. At T A = + C, V S = +.7V, R L = kω, connected to V S /, unless otherwise noted. OPA37UA, NA OPA37UA, EA OPA37UA PARAMETER CONDITIONS MIN TYP MAX UNITS OFFSET VOLTAGE Input Offset Voltage V CM = V ± ±7 µv vs Temperature() Specified Temperature Range µv/ C vs Power Supply (PSRR) V S = +.7V to +3V 3 µv/v Channel Separation (dual and quad). µv/v INPUT BIAS CURRENT Input Bias Current() V CM = V na Input Offset Current V CM = V ±. ± na NOISE Input Voltage Noise, f =. to Hz µv PP Input Voltage Noise Density, f = khz nv/ Hz Current Noise Density, f = khz fa/ Hz INPUT VOLTAGE RANGE Common-Mode Voltage Range. (V+). V Common-Mode Rejection Ratio V CM =.V to.v 7 db INPUT IMPEDANCE Differential Ω pf Common-Mode 9 Ω pf OPEN-LOOP GAIN Open-Loop Voltage Gain V O =.V to.7v db FREQUENCY RESPONSE Gain-Bandwidth Product. MHz Slew Rate G =. V/µs Settling Time,.% G =, V Step, C L = pf µs OUTPUT.% G =, V Step, C L = pf µs Voltage Output, Positive R L = kω to Ground (V+) (V+).7 V Negative R L = kω to Ground.. V Positive R L = kω to.3v (V+) (V+).7 V Negative R L = kω to.3v.. V Positive R L = kω to.3v (V+) (V+).7 V Negative R L = kω to.3v.3. V Short-Circuit Current /+3. ma Capacitive Load Drive (stable operation) POWER SUPPLY See Typical Characteristic Curves Specified Operating Voltage +.7 V Operating Range V Quiescent Current (per amplifier) 3 µa TEMPERATURE RANGE Specified Range + C Operating Range + C Storage Range + C Thermal Resistance, JA SOT3- C/W MSOP- C/W SSOP- (Obsolete) C/W SO- C/W () Specified by wafer-level test to 9% confidence. () Positive conventional current flows into the input terminals.

5 ELECTRICAL CHARACTERISTICS: V S = V Boldface limits apply over the specified temperature range, T A = C to + C. At T A = + C, V S = ±V, R L = kω, connected to V S /, unless otherwise noted. SBOS7A OCTOBER 99 REVISED FEBRUARY 7 OPA37UA, NA OPA37UA, EA OPA37UA PARAMETER CONDITIONS MIN TYP MAX UNITS OFFSET VOLTAGE Input Offset Voltage V CM = V ±3 ±9 µv vs Temperature() Specified Temperature Range. 7 µv/ C vs Power Supply (PSRR) V S = ±.3V to ±V 3 µv/v Channel Separation (dual and quad). µv/v INPUT BIAS CURRENT Input Bias Current() V CM = V. na Input Offset Current V CM = V ±. ± na NOISE Input Voltage Noise, f =. to Hz µv PP Input Voltage Noise Density, f = khz nv/ Hz Current Noise Density, f = khz fa/ Hz INPUT VOLTAGE RANGE Common-Mode Voltage Range (V ). (V+). V Common-Mode Rejection Ratio V CM = V to 3.V 9 db INPUT IMPEDANCE Differential Ω pf Common-Mode 9 Ω pf OPEN-LOOP GAIN Open-Loop Voltage Gain V O = V to 3.V db FREQUENCY RESPONSE Gain-Bandwidth Product. MHz Slew Rate G =. V/µs Settling Time,.% G =, V Step, C L = pf µs OUTPUT.% G =, V Step, C L = pf µs Voltage Output, Positive R L = kω (V+). (V+).9 V Negative R L = kω (V ) +. (V ) +.3 V Positive R L = kω (V+). (V+).9 V Negative R L = kω (V ) + (V ) +. V Short-Circuit Current /+. ma Capacitive Load Drive (stable operation) POWER SUPPLY See Typical Characteristic Curves Specified Operating Range ± V Operating Range ±.3 ± V Quiescent Current (per amplifier) ± ±7 µa TEMPERATURE RANGE Specified Range + C Operating Range + C Storage Range + C Thermal Resistance, JA SOT3- C/W MSOP- C/W SSOP- (Obsolete) C/W SO- C/W () Specified by wafer-level test to 9% confidence. () Positive conventional current flows into the input terminals.

6 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 TYPICAL CHARACTERISTICS At T A = + C and R L = kω, unless otherwise noted. OPEN LOOP GAIN/PHASE vs FREQUENCY G C L = pf POWER SUPPLY and COMMON MODE REJECTION vs FREQUENCY +PSR (V S =+V,±V) Voltage Gain (db) Φ V S = ±V 9 3 Phase () PSR, CMR (db) +PSR (V S = +.7V) CMR (V S = +.7V, +V or ±V) V S = +.7V, +V k k k M M Frequency (Hz) PSR (V S = ±V) k k k M M Frequency (Hz) k INPUT NOISE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY 3 CHANNEL SEPARATION vs FREQUENCY Voltage Noise (nv/ Hz) Current Noise (fa/ Hz) Current Noise Voltage Noise k k k Frequency (Hz) Channel Separation (db) Dual and quad devices. G =, all channels. Quad measured channel 9 AtoDorBtoC other combinations yield improved rejection. k k k Frequency (Hz) INPUT BIAS CURRENT vs TEMPERATURE INPUT BIAS CURRENT vs INPUT COMMON MODE VOLTAGE Input Bias Current (na) V S = +.7V, +V V S = ±V Input Bias Current (na) 9 7 V S = +.7V V S = ±V V S =+V 7 7 Temperature (C) Common Mode Voltage (V)

7 TYPICAL CHARACTERISTICS (Continued) At TA = + C and R L = kω, unless otherwise noted. SBOS7A OCTOBER 99 REVISED FEBRUARY 7 Percent of Amplifiers (%). 7.. OFFSET VOLTAGE PRODUCTION DISTRIBUTION Typical production distribution of packaged units. Single, dual, and quad units included. V S = +.7V, +V.%.%.7% Percent of Amplifiers (%) Typical production distribution of packaged units. Single, dual, and quad units included. OFFSET VOLTAGE PRODUCTION DISTRIBUTION V S = ±V.%.% Offset Voltage (µv) Offset Voltage (µv) Percent of Amplifiers (%) 3 OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION V S =+.7V Typical production distribution of packaged units. Single, dual, and quad units included..%.% Percent of Amplifiers (%) OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION V S =+V Typical production distribution of packaged units. Single, dual, and quad units included..%.%.%.% Offset Voltage Drift (µv/c) Offset Voltage Drift (µv/c) 7 7. Percent of Amplifiers (%) OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION V S = ±V Typical production distribution of packaged units. Single, dual, and quad units included..%.%.% A OL,CMR,PSR(dB) 9 7 CMR AOL PSR A OL, CMR, PSR vs TEMPERATURE V S = ±V V S = +.7V, +V, ±V V S = +.7V, +V V S = +.7V, +V V S = ±V Offset Voltage Drift (µv/c) Temperature (C) 7

8 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 TYPICAL CHARACTERISTICS (Continued) At TA = + C and R L = kω, unless otherwise noted. SMALL SIGNAL STEP RESPONSE (G =, C L = pf, V S =+V) SMALL SIGNAL STEP RESPONSE (G =, C L = pf, V S =+V) mv/div mv/div µs/div µs/div LARGE SIGNAL STEP RESPONSE (G =, C L = pf, V S =+V) V S =+V, 3V Step SETTLING TIME vs GAIN V S = ±V, V Step V/div Settling Time (µs) V S =+.7V,.% V Step.% µs/div Gain (V/V) Output Voltage Swing (V) V+ (V+). (V+) (V+). (V+) (V ) + (V ) +. (V ) + (V ) +. V OUTPUT VOLTAGE SWING vs OUTPUT CURRENT Sourcing Current +C +C C Sinking Current +C C +C +C 3 Output Current (ma) Overshoot (%) 7 3 SMALL SIGNAL OVERSHOOT vs LOAD CAPACITANCE G=+,V S = +.7V, +V G=+,V S = ±V G=, V S = ±V G=, V S = +.7V, +V G=, V S = +.7V, +V, ±V k k Load Capacitance (pf)

9 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 TYPICAL CHARACTERISTICS (Continued) At TA = + C and R L = kω, unless otherwise noted. 3 MAXIMUM OUTPUT VOLTAGE vs FREQUENCY 3 QUIESCENT CURRENT vs TEMPERATURE Output Voltage (V PP ) k V S =+V V S =+.7V V S = ±V k k Frequency (Hz) Maximum output voltage without slew rate induced distortion M Quiescent Current (µa) V S = ±V V S =+V 7 7 Temperature (C) V S = +.7V Short Circuit Current (ma) SHORT CIRCUIT CURRENT vs TEMPERATURE V S = ±V V S =+.7V V V S =+.7V S = ±V 7 Temperature (C) V S =+V V S =+V 7 I SC + I SC 9

10 SBOS7A OCTOBER 99 REVISED FEBRUARY 7 APPLICATION INFORMATION OPA37 series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. Power supply pins should be bypassed with nf ceramic capacitors. OPERATING VOLTAGE OPA37 series op amps operate from single (+.7V to +3V) or dual (±.3V to ±V) supplies with excellent performance. Most behavior remains unchanged throughout the full operating voltage range. Parameters which vary significantly with operating voltage are shown in typical performance curves. Specifications are production tested with +.7V, +V, and ±V supplies. OUTPUT CURRENT AND STABILITY OPA37 series op amps can drive large capacitive loads. However, under certain limited output conditions any op amp may become unstable. Figure shows the region where the OPA37 has a potential for instability. These load conditions are rarely encountered, especially for single supply applications. For example, take the case when a +V supply with a kω load to V S / is used. OPA37 series op amps remain stable with capacitive loads up to,pf, if sinking current and up to,pf, if sourcing current. Furthermore, in single-supply applications where the load is connected to ground, the op amp is only sourcing current, and as shown Figure, can drive,pf with output currents up to.ma. Capacitive Load (pf) k k k OPERATION NOT RECOMMENDED V S = +.7V V S =+V,±V.... Output Current (ma) Figure. Stability-Capacitive Load vs Output Current R H Ω To Load I H R 3.3kΩ R 3 3.3kΩ High Side Current Sense In +In R 33kΩ V+ A OPA37 Out V O = I H R H + V+ for A,A.7V to = ±V R kω R kω R 9.kΩ V R and R divide down the common mode input to A. V for A,A V+ R kω R L Ω In +In R 7 9.9kΩ A OPA37 V Out Optional for I B Cancellation (R 7 =R II R ) Low Side Current Sense Common mode range of A extends to V for low side sensing V O = I L R L To Load I L NOTE: Low and high side sensing circuits can be used independently. Figure. Low and High-Side Battery Current Sensing

11 PACKAGE OPTION ADDENDUM 7-Apr-9 PACKAGING INFORMATION Orderable Device Status () Package Type Package Drawing Pins Package Qty OPA37EA/ ACTIVE MSOP DGK Green (RoHS & OPA37EA/G ACTIVE MSOP DGK Green (RoHS & OPA37EA/K ACTIVE MSOP DGK Green (RoHS & OPA37EA/KG ACTIVE MSOP DGK Green (RoHS & OPA37UA ACTIVE SOIC D 7 Green (RoHS & OPA37UA/K ACTIVE SOIC D Green (RoHS & OPA37UA/KE ACTIVE SOIC D Green (RoHS & OPA37UAE ACTIVE SOIC D 7 Green (RoHS & OPA37NA/ ACTIVE SOT-3 DBV Pb-Free (RoHS) OPA37NA/E ACTIVE SOT-3 DBV Pb-Free (RoHS) OPA37NA/3K ACTIVE SOT-3 DBV 3 Pb-Free (RoHS) OPA37NA/3KE ACTIVE SOT-3 DBV 3 Pb-Free (RoHS) OPA37UA ACTIVE SOIC D 7 Green (RoHS & OPA37UA/K ACTIVE SOIC D Green (RoHS & OPA37UA/KG ACTIVE SOIC D Green (RoHS & OPA37UAG ACTIVE SOIC D 7 Green (RoHS & OPA37UA/ OBSOLETE SSOP/ QSOP OPA37UA/K OBSOLETE SSOP/ QSOP Eco Plan () Lead/Ball Finish MSL Peak Temp (3) DBQ TBD Call TI Call TI DBQ TBD Call TI Call TI () 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. () Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & - please check for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all substances, including the requirement that lead not exceed.% 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. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either ) lead-based flip-chip solder bumps used between the die and Addendum-Page

12 PACKAGE OPTION ADDENDUM 7-Apr-9 package, or ) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & : TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed.% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry 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. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page

13 PACKAGE MATERIALS INFORMATION -Jun- TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Reel Diameter Width (mm) W (mm) A (mm) B (mm) K (mm) P (mm) OPA37EA/ MSOP DGK Q OPA37EA/K MSOP DGK Q OPA37UA/K SOIC D Q OPA37NA/ SOT-3 DBV Q3 OPA37NA/3K SOT-3 DBV Q3 OPA37UA/K SOIC D Q W (mm) Pin Quadrant Pack Materials-Page

14 PACKAGE MATERIALS INFORMATION -Jun- *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA37EA/ MSOP DGK OPA37EA/K MSOP DGK OPA37UA/K SOIC D OPA37NA/ SOT-3 DBV OPA37NA/3K SOT-3 DBV OPA37UA/K SOIC D Pack Materials-Page

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