OPA2244PA

® OPA 244 OPA 224 4 OPA 244 OPA ® OPA 424 224 4 4 OPA244 OPA2244 OPA4244 Single-Supply OPERATIONAL AMPLIFIERS MicroAmplifier ™ Series FEATURES q MicroSIZE PACKAGES OPA244 (Single): SOT-23-5 OPA2244 (Dual): MSOP-8 OPA4244 (Quad): TSSOP-14 q MicroPOWER: IQ = 50µA/channel q SINGLE SUPPLY OPERATION q WIDE BANDWIDTH: 430kHz q WIDE SUPPLY RANGE: Single Supply: 2.2V to 36V Dual Supply: ±1.1V to ±18V MicroPower, DESCRIPTION The OPA244 (single), OPA2244 (dual), and OPA4244 (quad) op amps are designed for very low quiescent current (50µA/channel), yet achieve excellent bandwidth. Ideal for battery powered and portable instrumentation, all versions are offered in micro packages for space-limited applications. The dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded. The OPA244 series is easy to use and free from phase inversion and overload problems found in some other op amps. These amplifiers are stable in unity gain and excellent performance is maintained as they swing to their specified limits. They can be operated from single (+2.2V to +36V) or dual supplies (±1.1V to ±18V). The input common-mode voltage range includes ground—ideal for many single supply applications. All versions have similar performance. However, there are some differences, such as common-mode rejection. All versions are interchangeable in most applications. All versions are offered in miniature, surface-mount packages. OPA244 (single version) comes in the tiny 5-lead SOT-23-5 surface mount, SO-8 surface mount, and 8-pin DIP. OPA2244 (dual version) is available in the MSOP-8 surface mount, SO-8 surface-mount, and 8-pin DIP. The OPA4244 (quad) comes in the TSSOP-14 surface mount. They are fully specified from –40°C to +85°C and operate from –55°C to +125°C. A SPICE Macromodel is available for design analysis. OPA4244 SOT-23-5 APPLICATIONS q q q q q BATTERY POWERED SYSTEMS PORTABLE EQUIPMENT PCMCIA CARDS BATTERY PACKS AND POWER SUPPLIES CONSUMER PRODUCTS OPA244 Out 1 V– 2 +In 3 4 –In 5 V+ Output A 1 2 3 4 5 6 7 TSSOP-14 14 13 12 11 10 9 8 Output D –Input D +Input D –V +Input C –Input C Output C OPA244 NC –In +In V– 1 2 3 4 8-Pin DIP, SO-8 8 7 6 5 NC V+ Output NC OPA2244 Out A –In A +In A V– 1 2 3 4 A B 8 7 6 5 V+ Out B –In B +In B –Input A +Input A +V +Input B –Input B Output B 8-Pin DIP, SO-8, MSOP-8 International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1999 Burr-Brown Corporation PDS-1437C Printed in U.S.A. December, 1999 SPECIFICATIONS: VS = +2.6V to +36V Boldface limits apply over the specified temperature range, TA = –40°C to +85°C At TA = +25°C, RL = 20kΩ connected to ground, unless otherwise noted. OPA244NA, PA, UA PARAMETER OFFSET VOLTAGE Input Offset Voltage TA = –40°C to 85°C vs Temperature vs Power Supply TA = –40°C to 85°C INPUT BIAS CURRENT Input Bias Current Input Offset Current NOISE Input Voltage Noise, f = 0.1kHz to 10kHz Input Voltage Noise Density, f = 1kHz Current Noise Density, f = 1kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection TA = –40°C to 85°C INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain TA = –40°C to 85°C FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time 0.01% Overload Recovery Time OUTPUT Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Short-Circuit Current Capacitive Load Drive POWER SUPPLY Specified Voltage Range Minimum Operating Voltage Quiescent Current TA = –40°C to 85°C TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance SOT-23-5 Surface-Mount SO-8 Surface-Mount 8-Pin DIP NOTE: (1) VS = +15V. AOL VO = 0.5V to (V+) – 0.9 VO = 0.5V to (V+) – 0.9 86 86 VOS dVOS/dT PSRR CONDITION VS = ±7.5V, VCM = 0 TA = –40°C to 85°C VS = +2.6V to +36V VS = +2.6V to +36V VCM = VS /2 VCM = VS /2 MIN TYP(1) ±0.7 MAX ±1.5 ±2 50 50 –25 ±10 UNITS mV mV µV/°C µV/V µV/V nA nA µVp-p nV/√Hz fA/√Hz (V+) – 0.9 98 V dB dB Ω || pF Ω || pF dB dB kHz V/µs µs µs V V V V V V V V mA ±4 5 IB IOS –10 ±1 0.4 22 40 0 84 84 en in VCM CMRR VS = ±18V, VCM = –18V to +17.1V VS = ±18V, VCM = –18V to +17.1V 106 || 2 109 || 2 106 GBW SR G=1 10V Step VIN • Gain = VS AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground (V+) – 0.9 (V+) – 0.9 0.5 0.5 430 –0.1/+0.16 150 8 (V+) – 0.75 (V+) – 0.75 0.2 0.2 (V+) – 0.75 (V+) – 0.75 0.1 0.1 –25/+12 See Typical Curve +36 +2.2 50 60 70 85 125 150 200 150 100 VO ISC CLOAD VS IQ TA = –40°C to 85°C IO = 0 IO = 0 –40 –55 –65 +2.6 V V µA µA °C °C °C °C/W °C/W °C/W θJA The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® OPA244, 2244, 4244 2 SPECIFICATIONS: VS = +2.6V to +36V Boldface limits apply over the specified temperature range, TA = –40°C to +85°C At TA = +25 °C, RL = 20kΩ connected to ground, unless otherwise noted. OPA2244EA, PA, UA PARAMETER OFFSET VOLTAGE Input Offset Voltage TA = –40°C to 85°C vs Temperature vs Power Supply TA = –40°C to 85°C Channel Separation INPUT BIAS CURRENT Input Bias Current Input Offset Current NOISE Input Voltage Noise, f = 0.1kHz to 10kHz Input Voltage Noise Density, f = 1kHz Current Noise Density, f = 1kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection TA = –40°C to 85°C INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain TA = –40°C to 85°C FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time 0.01% Overload Recovery Time OUTPUT Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Short-Circuit Current Capacitive Load Drive POWER SUPPLY Specified Voltage Range Minimum Operating Voltage Quiescent Current (per amplifier) TA = –40°C to 85°C TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance MSOP-8 Surface-Mount SO-8 Surface-Mount 8-Pin DIP NOTE: (1) VS = +15V. AOL VO = 0.5V to (V+) – 0.9 VO = 0.5V to (V+) – 0.9 86 86 VOS dVOS/dT PSRR CONDITION VS = ±7.5V, V CM = 0 TA = –40°C to 85°C VS = +2.6V to +36V VS = +2.6V to +36V MIN TYP(1) ±0.7 MAX ±1.5 ±2 50 50 UNITS mV mV µV/°C µV/V µV/V dB nA nA µVp-p nV/√Hz fA/√ Hz (V+) – 0.9 98 V dB dB Ω || pF Ω || pF dB dB kHz V/µs µs µs V V V V V V V V mA ±4 5 140 IB IOS VCM = VS /2 VCM = VS /2 –10 ±1 0.4 22 40 0 72 72 –25 ±10 en in VCM CMRR VS = ± 18V, VCM = –18V to +17.1V VS = ± 18V, VCM = –18V to +17.1V 106 || 2 109 || 2 106 GBW SR G=1 10V Step VIN • Gain = VS AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground (V+) – 0.9 (V+) – 0.9 0.5 0.5 430 –0.1/+0.16 150 8 (V+) – 0.75 (V+) – 0.75 0.2 0.2 (V+) – 0.75 (V+) – 0.75 0.1 0.1 –25/+12 See Typical Curve +36 +2.2 40 50 63 85 125 150 200 150 100 VO ISC CLOAD VS IQ TA = –40°C to 85°C IO = 0 IO = 0 –40 –55 –65 +2.6 V V µA µA °C °C °C °C/W °C/W °C/W θJA ® 3 OPA244, 2244, 4244 SPECIFICATIONS: VS = +2.6V to +36V Boldface limits apply over the specified temperature range, TA = –40°C to +85°C At TA = +25°C, RL = 20kΩ connected to ground, unless otherwise noted. OPA4244EA PARAMETER OFFSET VOLTAGE Input Offset Voltage TA = –40°C to 85°C vs Temperature vs Power Supply TA = –40°C to 85°C Channel Separation INPUT BIAS CURRENT Input Bias Current Input Offset Current NOISE Input Voltage Noise, f = 0.1kHz to 10kHz Input Voltage Noise Density, f = 1kHz Current Noise Density, f = 1kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection TA = –40°C to 85°C INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain TA = –40°C to 85°C FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time 0.01% Overload Recovery Time OUTPUT Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Voltage Output, Positive TA = –40°C to 85°C Voltage Output, Negative TA = –40°C to 85°C Short-Circuit Current Capacitive Load Drive POWER SUPPLY Specified Voltage Range Minimum Operating Voltage Quiescent Current (per amplifier) TA = –40°C to 85°C TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance TSSOP-14 Surface Mount NOTE: (1) VS = +15V. AOL VO = 0.5V to (V+) – 0.9 VO = 0.5V to (V+) – 0.9 86 86 VOS dVOS/dT PSRR CONDITION VS = ±7.5V, VCM = 0 TA = –40°C to 85°C VS = +2.6V to +36V VS = +2.6V to +36V MIN TYP(1) ±0.7 MAX ±1.5 ±2 50 50 UNITS mV mV µV/°C µV/V µV/V dB nA nA µVp-p nV/√Hz fA/√Hz (V+) – 0.9 104 V dB dB Ω || pF Ω || pF dB dB kHz V/µs µs µs V V V V V V V V mA ±4 5 140 IB IOS VCM = VS /2 VCM = VS /2 –10 ±1 0.4 22 40 0 82 82 –25 ±10 en in VCM CMRR VS = ±18V, VCM = –18V to +17.1V VS = ±18V, VCM = –18V to +17.1V 106 || 2 109 || 2 106 GBW SR G=1 10V Step VIN • Gain = VS AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to VS/2 AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground AOL ≥ 80dB, RL = 20kΩ to Ground (V+) – 0.9 (V+) – 0.9 0.5 0.5 430 –0.1/+0.16 150 8 (V+) – 0.75 (V+) – 0.75 0.2 0.2 (V+) – 0.75 (V+) – 0.75 0.1 0.1 –25/+12 See Typical Curve +36 +2.2 40 60 70 85 125 150 100 VO ISC CLOAD VS IQ TA = –40°C to 85°C IO = 0 IO = 0 –40 –55 –65 +2.6 V V µA µA °C °C °C °C/W θJA ® OPA244, 2244, 4244 4 ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, V+ to V– .................................................................... 36V Input Voltage Range(2) ................................... (V–) – 0.3V to (V+) + 0.3V Input Current(2) ................................................................................. 10mA Output Short-Circuit(3) .............................................................. Continuous Operating Temperature .................................................. –55°C to +125°C Storage Temperature ..................................................... –65°C to +150°C Junction Temperature ...................................................................... 150°C Lead Temperature (soldering, 10s) ................................................. 300°C ESD Capability ................................................................................ 2000V NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. (2) Inputs are diode-clamped to the supply rails and should be current-limited to 10mA or less if input voltages can exceed rails by more than 0.3V. (3) Short-circuit to ground, one amplifier per package. ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown 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 PACKAGE DRAWING NUMBER SPECIFIED TEMPERATURE RANGE –40°C to +85°C PACKAGE MARKING ORDERING NUMBER(1) TRANSPORT MEDIA PRODUCT Single OPA244NA PACKAGE SOT-23-5 Surface-Mount 331 A44 " OPA244PA OPA244UA " 8-Pin DIP SO-8 Surface-Mount " 006 182 " –40°C to +85°C –40°C to +85°C " OPA244PA OPA244UA " Dual OPA2244EA " MSOP-8 Surface-Mount " 337 " –40°C to +85°C –40°C to +85°C –40°C to +85°C " A44 OPA244NA/250 OPA244NA/3K OPA244PA OPA244UA OPA244UA/2K5 OPA2244EA/250 OPA2244EA/2K5 OPA2244PA OPA2244UA OPA2244UA/2K5 OPA4244EA/250 OPA4244EA/2K5 Tape and Reel Tape and Reel Rails Rails Tape and Reel Tape and Reel Tape and Reel Rails Rails Tape and Reel Tape and Reel Tape and Reel " OPA2244PA OPA2244UA " 8-Pin DIP SO-8 Surface-Mount " 006 182 " " " OPA2244PA OPA2244UA " Quad OPA4244EA " TSSOP-14 Surface-Mount " 357 " OPA4244EA –40°C to +85°C " " " " " NOTE: (1) Products followed by a slash (/) are only available in Tape and Reel in the quantities indicated (e.g., /250 indicates 250 devices per reel). Ordering 3000 pieces of “OPA244NA/3K” will get a single 3000 piece Tape and Reel. ® 5 OPA244, 2244, 4244 TYPICAL PERFORMANCE CURVES At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted. OPEN-LOOP GAIN AND PHASE vs FREQUENCY 180 160 140 120 Phase All Models 0 –20 –40 Separation (dB) 160 150 140 130 120 110 100 90 80 70 60 1 10 CHANNEL SEPARATION –60 Phase(°) AOL (dB) 100 80 60 40 20 0 –20 1 10 Gain –80 –100 –120 –140 –160 –180 –200 OPA244 OPA4244 OPA2244 100 1k Frequency (Hz) 10k 100k 1M 100 1k 10k 100k Frequency (Hz) POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY 110 100 OPA244 120 110 100 PSRR, CMRR (dB) OPA4244 PSRR, CMRR (dB) 90 80 OPA2244 70 60 50 40 30 10 100 1k 10k 100k 1M Frequency (Hz) PSRR CMRR 90 80 70 60 50 40 30 1 10 100 1k Frequency (Hz) 10k 100k 1M PSRR CMRR OPEN-LOOP GAIN vs LOAD RESISTANCE 120 VO = ±5V Output Voltage Swing (V) 110 100 OUTPUT VOLTAGE SWING vs OUTPUT CURRENT 15 14 13 12 11 10 –10 –11 –12 –13 –14 –15 125°C 25°C 0 ±2 ±4 ±6 ±8 ±10 ±12 ±14 –55°C 125°C –55°C RL to VS /2 25°C Gain(dB) 90 80 70 60 1 10 Load (kΩ) 100 Output Current (mA) ® OPA244, 2244, 4244 6 TYPICAL PERFORMANCE CURVES (Cont.) At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted. INPUT BIAS CURRENT vs INPUT COMMON-MODE VOLTAGE –12 INPUT BIAS CURRENT vs TEMPERATURE –12 –11 –10 Bias Current (nA) Bias Current (nA) –10 –9 –8 –7 –6 –IB +IB –8 –6 –4 –2 –15 –10 –5 0 5 10 15 –5 –75 –50 –25 0 25 50 75 100 125 Common-Mode Voltage (V) Temperature (°C) AOL, CMRR, PSRR vs TEMPERATURE 125 120 115 110 105 100 95 90 85 80 –75 –50 –25 0 25 50 75 100 125 Temperature(°C) AOL CMRR PSRR 0.20 0.18 0.16 SLEW RATE vs TEMPERATURE +SR Slew Rate (V/µs) 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 –75 –25 25 75 125 175 Temperature (°C) VS = ±7.5, RL = 20kΩ, CL = 100pF, Gain = +1 –SR COMMON-MODE REJECTION vs SUPPY VOLTAGE 120 100 Quiescent Current (µA) 52 48 44 40 36 QUIESCENT CURRENT AND SHORT-CIRCUIT vs SUPPLY VOLTAGE 35 IQ –ISC 30 25 20 15 +ISC 32 28 24 10 5 0 0 4 8 12 16 20 24 28 32 36 Supply Voltage (V) CMRR (dB) 80 60 40 20 0 0 4 8 12 16 20 24 28 32 36 Suppy Voltage (V) ® 7 OPA244, 2244, 4244 Short-Circuit Current (mA) TYPICAL PERFORMANCE CURVES (Cont.) At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted. 65 60 Quiescent Current (µA) Short-Circuit Current (mA) 55 50 45 40 35 30 25 –75 +ISC –ISC –20 –15 IQ +15 +ISC +10 +5 0 125 ±10 ±5 0 125 35 30 20 –75 –50 –25 0 25 50 –50 –25 0 25 50 75 100 75 100 Temperature (°C) Temperature (°C) INPUT VOLTAGE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY 1000 1000 MAXIMUM OUTPUT VOLTAGE vs FREQUENCY 40 35 VS = 36V Voltage Noise (nV√Hz) Current Noise (fA√Hz) Output Voltage (Vp-p) Current Noise 100 100 30 25 20 15 10 5 VS = 2.7V 100 1k 10k Frequency(Hz) 100k 1M VS =15V 10 Voltage Noise 10 1 1 10 100 1k 10k Frequency (Hz) 1 100k 0 60 OPA244 50 Overshoot (%) SMALL SIGNAL OVERSHOOT vs LOAD CAPACITANCE 70% OPA4244 G = +1 G = –2 60% 50% OPA2244 G = –1 30 20 10 0 100 G = +3 Overshoot (%) 40 40% 30% 20% 10% G = +3, RL = 20kΩ 0% G = +1, RL = 20kΩ G = +2, RL = 20kΩ G = +1, RL = ∞ 1k Load Capacitance (pF) 10k 10 100 1k 10k Load Capacitance (pF) ® OPA244, 2244, 4244 8 Short-Circuit Current (mA) Quiescent Current (µA) QUIESCENT AND SHORT-CIRCUIT CURRENT vs TEMPERATURE ±40 60 OPA244 ±35 55 OPA2244 ±30 50 ±25 45 ±20 IQ 40 ±15 –30 OPA4244 –25 –ISC TYPICAL PERFORMANCE CURVES (Cont.) At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted. LARGE-SIGNAL STEP RESPONSE, G = 1, CL = 100pF OPA244 OPA2244 OPA4244 2V/div 2V/div 25µs/div 50µs/div SMALL-SIGNAL STEP RESPONSE, G = 1, CL = 100pF OPA244 OPA2244 OPA4244 50mV/div 50mV/div 10µs/div 10µs/div OFFSET VOLTAGE PRODUCTION DISTRIBUTION 12 OPA244 Percent of Amplifiers (%) 30 OPA4244 25 Percent of Amplifiers (%) 10 OPA2244 8 6 4 2 0 –100 0 100 300 500 700 –1500 –1300 –1100 –900 –700 –500 –300 900 1100 1300 1500 20 15 10 5 0 –1500 –1200 –900 –600 –300 0 300 600 900 1200 1500 1800 ® Offset Voltage (µV) Offset Voltage (µV) 9 OPA244, 2244, 4244 TYPICAL PERFORMANCE CURVES (Cont.) At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted. 35 30 Percent of Amplifiers (%) 25 20 15 10 5 0 0 1 2 3 4 5 6 7 Percent of Amplifiers (%) OFFSET VOLTAGE PRODUCTION DISTRIBUTION 70 OPA244 60 OPA2244 50 40 30 20 10 0 8 9 10 0 0.5 1 1.5 2 2.5 3 3.5 4 OPA4244 4.5 5.0 5.5 VOS Drift (µV/°C) VOS Drift (µV/°C) ® OPA244, 2244, 4244 10 APPLICATIONS INFORMATION The OPA244 is unity-gain stable and suitable for a wide range of general purpose applications. Power supply pins should be bypassed with 0.01µF ceramic capacitors. OPERATING VOLTAGE The OPA244 can operate from single supply (+2.2V to +36V) or dual supplies (±1.1 to ±18V) with excellent performance. Unlike most op amps which are specified at only one supply voltage, the OPA244 is specified for real world applications; a single set of specifications applies throughout the +2.6V to +36V (±1.3 to ±18V) supply range. This allows a designer to have the same assured performance at any supply voltage within this range. In addition, many key parameters are guaranteed over the specified temperature range, –40°C to +85°C. Most behavior remains unchanged throughout the full operating voltage range. Parameters which vary significantly with operating voltage or temperature are shown in typical performance curves. Useful information on solder pad design for printed circuit boards can be found in Burr-Brown's Application Bulletin AB-132B, “Solder Pad Recommendations for SurfaceMount Devices,” easily found at Burr-Brown's web site (http://www.burr-brown.com). RH 10Ω To Load IH R1 38.3kΩ R3 38.3kΩ R5 383kΩ V+ –In A1 +In OPA244 V+ for A1, A2 + 2.2V to 36V (±1.1V to ±18V) V– for A1, A2 V+ –In A2 +In OPA244 Out VO = 10 • IL • RL R8 100kΩ Out VO = 10 • IH • RH High-Side Current Sense R4 20kΩ V– R2 19.1kΩ R2 and R4 divide down the common-mode input to A1. R6 10kΩ RL 10Ω IL V– R7 9.09kΩ Low-Side Current Sense Common-mode range of A2 extends to V– for low-side sensing. Optional for IB Cancellation (R7 = R6 II R8) To Load NOTE: Low and high-side sensing circuits can be used independently. FIGURE 1. Low and High-Side Battery Current Sensing. ® 11 OPA244, 2244, 4244