OP290FZ

a Precision, Low Power, Micropower Dual Operational Amplifier OP290 PIN CONNECTIONS 16-Lead SOL (S-Suffix) –IN A 1 +IN A 2 NC 3 V– 4 16 FEATURES Single-/Dual-Supply Operation, 1.6 V to 36 V, 0.8 V to 18 V True Single-Supply Operation; Input and Output Voltage Ranges Include Ground Low Supply Current (Per Amplifier), 20 A Max High Output Drive, 5 mA Min Low Input Offset Voltage, 200 V Max High Open-Loop Gain, 700 V/mV Min Outstanding PSRR, 5.6 V/V Max Industry Standard 8-Lead Dual Pinout Available in Die Form GENERAL DESCRIPTION +IN A 15 NC 14 NC 13 V+ TOP VIEW NC 5 (Not to Scale) 12 NC OP290 +IN B 6 –IN B 7 NC 8 11 NC 10 OUT B 9 The OP290 is a high performance micropower dual op amp that operates from a single supply of 1.6 V to 36 V or from dual supplies of ± 0.8 V to ± 18 V. Input voltage range includes the negative rail allowing the OP290 to accommodate input signals down to ground in single-supply operation. The OP290’s output swing also includes ground when operating from a single supply, enabling “zero-in, zero-out” operation. The OP290 draws less than 20 µA of quiescent supply current per amplifier, while able to deliver over 5 mA of output current to a load. Input offset voltage is below 200 µV eliminating the need for external nulling. Gain exceeds 700,000 and common-mode rejection is better than 100 dB. The power supply rejection ratio of under 5.6 pV/V minimizes offset voltage changes experienced in battery-powered systems. The low offset voltage and high gain offered by the OP290 bring precision performance to micropower applications. The minimal voltage and current requirements of the OP290 suit it for battery- and solar-powered applications, such as portable instruments, remote sensors, and satellites. For a single op amp, see the OP90; for a quad, see the OP490. NC NC = NO CONNECT EPOXY MINI-DIP (P-Suffix) 8-Lead HERMETIC DIP (Z-Suffix) OUT A –IN A +IN A V– 1 2 3 4 8 V+ OUT B –IN B +IN B A B 7 6 OP290 5 V+ +IN –IN OUTPUT NULL NULL V ELECTRONICALLY ADJUSTED ON CHIP FOR MINIMUM OFFSET VOLTAGE Figure 1. Simplified Schematic (one of two amplifiers is shown) R EV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 OP290–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions INPUT OFFSET VOLTAGE VOS INPUT OFFSET CURRENT IOS INPUT BIAS CURRENT IB LARGE-SIGNAL VOLTAGE GAIN AVO VCM = 0 V VCM = 0 V VS = ± 15 V, VO = ± 10 V RL = 100 kΩ RL = 10 kΩ RL = 2 kΩ V+ = 5V, V– = 0 V, 1 V < VO < 4 V RL = 100 kΩ RL = 10 kΩ V+ = 5 V, V– = 0 V V S = ± 5 V1 VS = ± 5 V RL = 10 kΩ RL = 2 kΩ V+ = 5 V, V– = 0 V V+ = 5 V, V– = 0 V RL = 10kn 700 350 125 200 100 0/4 –15/13.5 (@ VS = 1.5 V to 15 V, TA = 25 C, unless otherwise noted.) OP290F Typ 75 0.1 4.0 500 250 100 125 75 0/4 –15/13.5 1000 500 200 300 140 Max Min 300 5 20 400 200 100 100 70 OP290G Typ 125 0.1 4.0 600 400 200 250 140 V Max Unit 500 5 25 µV nA nA OP290E Min Typ Max Min 50 0.1 4.0 1200 600 250 400 180 200 3 15 V/mV INPUT VOLTAGE RANGE1 IVR OUTPUT VOLTAGE SWING VO VOH VOL COMMON-MODE REJECTION CMR 0/4 –15/13.5 ± 13.5 ± 14.2 ± 10.5 ± 11.5 40 4.2 10 50 ttS 120 10 5.6 30 40 ± 13.5 ± 14.2 ± 10.5 ± 11.5 4.0 4.2 10 80 90 50 100 120 10 19 25 650 5.6 30 40 ± 13.5 ± 14.2 V ± 10.5 ± 11.5 4.0 4.2 10 80 90 50 100 120 3.2 19 25 650 10 30 40 V µV dB V+ = 5 V, V– = 0 V 0 V < VCM < 4 V 100 VS = ± 15 V, –15 V < VCM < 13.5 V POWER SUPPLY REJECTION RATIO SUPPLY CURRENT (All Amplifiers) CAPACITIVE LOAD STABILITY PSRR ISY VS = ± 1.5 V VS = ± 15 V AV = +1 No Oscillations fO = 0.1 Hz to 10 Hz VS = ± 15 V VS = ± 15 V VS = ± 15 V AV = +1 VS = ± 15 V Vs = +15 V VS = ± 15 V fO = 10 Hz VO = 20 Vp-p VS = ± 15 V2 120 5 µV/V µA PF 19 25 650 INPUT NOISE VOLTAGE1 enp-p INPUT RESISTANCE DIFFERENTIAL-MODERIN INPUT RESISTANCE COMMON-MODE SLEW RATE GAIN BANDWIDTH PRODUCT CHANNEL SEPARATION2 RINCM SR GBWP 3 3 3 µVp-p MΩ GΩ V/ms kHz 30 20 12 20 5 30 20 12 20 5 30 20 12 20 CS 150 120 150 120 150 dB NOTES 1 Guaranteed by CMR test. 2 Guaranteed but not 100% tested. Specifications subject to change without notice. –2– REV. A OP290 ELECTRICAL CHARACTERISTICS Parameter INPUT OFFSET VOLTAGE AVERAGE INPUT OFFSET VOLTAGE DRIFT INPUT OFFSET CURRENT INPUT BIAS CURRENT LARGE-SIGNAL VOLTAGE GAIN AVO Symbol VOS TCVOS IOS IB V S = 15 V VCM = 0 V VCM = 0 V VS = 15 V, VO = ± 10 V RL = 100 kΩ RL = 10 kΩ RL = 2 kΩ V+ = 5 V, V– = 0 V, 1 V < VO < 4 V RL = 100 kΩ RL = 10 kΩ V+ = 5 V, V– = 0 V VS = ± 15 V* VS = ± 15 V RL = 10 kΩ RL = 2 kΩ V+ = 5 V, V– = 0 V RL = 2 kΩ V+ = 5 V, V– = 0 V RL = 10 kΩ V+ = 5 V, V– = 0 V, 0 V < VCM < 13.5 V VS = ± 15 V, –15 V < VCM < 13.5 V 225 125 50 (@ VS = 1.5 V to 15 V, –55 C ≤ TA ≤ 125 C, unless otherwise noted.) OP290A Conditions Min Typ 80 03 0.1 4.2 400 240 110 Max 500 3 5 20 Unit µV µV/°C nA nA V/mV 100 50 200 110 V INPUT VOLTAGE RANGE* OUTPUT VOLTAGE SWING IVR VO VOH VOL 0/3.5 –15/13.5 ± 13 ± 10 ± 14.1 ± 11 10 80 90 105 115 3.2 10 50 60 100 V V µV dB µV/V µA COMMON-MODE REJECTION POWER SUPPLY REJECTION RATIO SUPPLY CURRENT (All Amplifiers) CMR PSRR IsY VS = ± 1.5 V VS = ± 15 V 30 38 NOTES *Guaranteed by CMR test. Specifications subject to change without notice. REV. A –3– OP290 ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions INPUT OFFSET VOLTAGE VOS AVERAGE INPUT OFFSET VOLTAGE DRIFT TCVOS (@ VS = 1.5 V to otherwise noted.) 15 V, –40 C ≤ TA ≤ 85 C for OP290E/OP290F/OP290G, unless OP290F Min Typ Max 115 600 Min OP290G Typ Max Unit 200 750 µV OP290E Min Typ Max 70 400 VS = ± 15 V 0.3 01 4.2 500 250 100 800 400 200 3 3 t5 350 175 75 0.6 0.1 4.2 700 350 150 5 5 20 300 150 75 1.2 0.1 4.2 600 250 125 7 25 µV/°C nA nA V/mV INPUT OFFSET CURRENT IOS VCM = 0 V INPUT BIAS CURRENT IB LARGE-SIGNAL VOLTAGE GAIN AVO VCM = 0 V VS = ± 5 V, VO = ± 0 V RL = 100 kΩ R L = 1 0 kΩ R L = 2 kΩ V+ = 5 V, V– = 0 V, 1 V < VO < 4 V RL = 100 kΩ R L = 1 0 kΩ 150 75 0/3.5 –15/13.5 280 140 100 50 0/3.5 –15/13.5 220 110 80 40 0/3.5 –15/13.5 160 90 V INPUT VOLTAGE RANGE* IVR V+ = 5 V, V– = 0 V VS = +15 V* OUTPUT VOLTAGE SWING VO VS = ± 15 V RL = 10 kΩ R L = 2 kΩ VOH V+ = 5 V, V– = 0 V R L = 2 kΩ V+ = 5 V, V– = 0 V VOL R L = 1 0 kΩ COMMON-MODE REJECTION CMR V+ = 5 V, V– = 0 V, 0 V < VCM < 3.5 V VS = ± 15 V –15 V < VCM < 13.5 V ± 13 ± 10 3.9 ± 14 ± 11 4.1 10 100 ± 13 ± 10 3.9 ± 14 ± 11 4.1 10 100 ± 13 ± 10 3.9 ± 14 ± 11 4.1 10 V V 100 µV dB 85 105 80 100 80 100 95 115 3.2 7.5 50 60 90 110 5.6 24 31 10 50 60 90 110 5.6 24 31 15 50 60 µV/V µA POWER SUPPLY PSRR REJECTION RATIO SUPPLY CURRENT ISY (All Amplifiers) VS = ± 1.5 V VS = ± 15 V 24 31 NOTE *Guaranteed by CMR test. Specifications subject to change without notice. –4– REV. A OP290 ABSOLUTE MAXIMUM RATINGS 1 ORDERING GUIDE Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Differential Input Voltage . . . [(V–) – 20 V] to [(V+) + 20 V] Common-Mode Input Voltage . [(V–) – 20 V] to [(V+) + 20 V] Output Short-Circuit Duration . . . . . . . . . . . . . . . . Indefinite Storage Temperature Range P, S, Z Packages . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C Operating Temperature Range OP290A . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C OP290E, OP290F, OP290G . . . . . . . . . . . . . –40°C to +85°C Junction Temperature (Tj) . . . . . . . . . . . . . –65°C to +150°C Lead Temperature Range (Soldering, 60 sec) . . . . . . . 300°C Package Type 8-Lead Hermetic DIP (Z) 8-Lead Plastic DIP (P) 16-Lead SOL (S) 2 jA jC TA = 25 C VOS Max (mV) 200 200 300 500 500 Package Cerdip 8-Lead OP290AZ* OP290EZ* OP290FZ* OP290GP OP290GS* Plastic Operating Temperature Range MIL XIND XIND XIND XIND *Not for new designs. Obsolete April 2002. Unit °C/W °C/W °C/W 134 96 92 12 37 27 For military processed devices, please refer to the Standard Microcircuit Drawing (SMD) available at www.dscc.dla.mil/programs.milspec./default.asp SMD Part Number 5962-89783012A* 5962-8978301PA* *Not for new designs. Obsolete April 2002. ADI Part Number OP290ARCMDA OP290AZMDA NOTES 1 Absolute Maximum Ratings apply to both DICE and packaged parts, unless otherwise noted. 2 jA is specified for worst-case mounting conditions, i.e., jA is specified for device in socket for CERDIP and P-DIP packages; jA is specified for device soldered to printed circuit board for SOL package. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the OP290 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE REV. A –5– OP290 100 INPUT OFFSET VOLTAGE – V VS = 15V INPUT OFFSET CURRENT – nA 0.14 VS = 15V 4.5 4.4 VS = 15V INPUT BIAS CURRENT – nA 100 125 80 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 –75 –50 –25 0 25 50 75 TEMPERATURE – C 100 125 0.12 60 0.1 40 0.08 20 0.06 0 0 25 50 75 –75 –50 –25 TEMPERATURE – C 100 125 –75 –50 –25 0 25 50 75 TEMPERATURE – C TPC 1. Input Offset Voltage vs. Temperature TPC 2. Input Offset Current vs. Temperature TPC 3. Input Bias Current vs. Temperature 44 NO LOAD 40 OPEN-LOOP GAIN – V/mV 600 RL = 10k 500 TA = 25 C OPEN-LOOP GAIN – dB 140 120 100 GAIN 80 60 40 20 0 TA = 25 C Vs = 15V RL = 100k SUPPLY CURRENT – A 36 32 28 24 20 16 12 8 4 0 25 50 75 –75 –50 –25 TEMPERATURE – C VS = 1.5V VS = 15V 400 TA = 85 C 300 TA = 125 C 200 100 0 100 125 0 5 10 15 20 TEMPERATURE – C 25 30 0 5 10 15 20 FREQUENCY – Hz 25 30 TPC 4. Supply Current vs. Temperature TPC 5. Open-Loop Gain vs. Single-Supply Voltage TPC 6. Open-Loop Gain and Phase Shift vs. Frequency 60 OUTPUT VOLTAGE SWING – V 6 TA = 25 C Vs = 15V CLOSED-LOOP GAIN – dB TA = 25 C V+ = 5V, V– = 0V 16 14 12 10 8 6 4 2 TA = 25 C Vs = 15V 1k 10k LOAD RESISTANCE – 100k 40 4 20 3 2 0 1 –20 10 100 1k 10k FREQUENCY – Hz 100k 0 100 OUTPUT VOLTAGE SWING – V 5 1k 10k LOAD RESISTANCE – 100k 0 100 TPC 7. Closed-Loop Gain vs. Frequency TPC 8. Ouput Voltage Swing vs. Load Resistance TPC 9. Output Voltage Swing vs. Load Resistance –6– REV. A PHASE SHIFT – Degrees Typical Performance Characteristics–OP290 140 POWER SUPPLY REJECTION – dB TA = 25 C NEGATIVE SUPPLY 140 COMMON MODE REJECTION – dB 120 120 100 POSITIVE SUPPLY 80 100 80 60 60 40 1 10 100 FREQUENCY – Hz 1k 40 1 10 100 FREQUENCY – Hz 1k NOISE VOLTAGE DESTINY– nV/ Hz TA = 25 C VS = 15V 1,000 TA = 25 C VS = 15V 100 10 0.1 1 10 100 FREQUENCY – Hz 1k TPC 10. Power Supply Rejection vs. Frequency TPC 11. Common-Mode Rejection vs. Frequency TPC 12. Noise Voltage Density vs. Frequency 10 CURRENT NOISE DESTINY– nV/ Hz TA = 25 C VS = 15V 100 90 100 90 TA = 25 C VS = 15V AV = +1 RL = 10k CL = 500pF 1 TA = 25 C VS = 15V AV = +1 RL = 10k CL = 500pF 10 0% 10 0% 20mV 100 s 5V 1ms 0.1 0.1 1 10 100 FREQUENCY – Hz 1k TPC 13. Current Noise Density vs. Frequency TPC 14. Small-Signal Transient Response TPC 15. Large-Signal Transient Response REV. A –7– OP290 +18V +15V +15V 100k 2 200 3 6 1/2 5 100k 1/2 8 1/2 OP290 1 OP290 1k A 9k OP37A V2 OP290 7 –15V 100 10k –15V 4 VIN 1/2 OP290 B V1 20Vp-p @ 10Hz –18V V1 CHANNEL SEPARATION = 20 LOG V2/1000 Figure 2. Burn-In Circuit APPLICATIONS INFORMATION BATTERY-POWERED APPLICATIONS Figure 3. Channel Separation Test Circuit APPLICATIONS TEMPERATURE TO 4–20 mA TRANSMITTER The OP290 can be operated on a minimum supply voltage of 1.6 V, or with dual supplies of 0.8 V, and draws only 19 pA of supply current. In many battery-powered circuits, the OP290 can be continuously operated for thousands of hours before requiring battery replacement, reducing equipment downtime and operating cost. High-performance portable equipment and instruments frequently use lithium cells because of their long shelf-life, light weight, and high energy density relative to older primary cells. Most lithium cells have a nominal output voltage of 3 V and are noted for a flat discharge characteristic. The low supply voltage requirement of the OP290, combined with the flat discharge characteristic of the lithium cell, indicates that the OP290 can be operated over the entire useful life of the cell. Figure 1 shows the typical discharge characteristic of a 1 Ah lithium cell powering an OP290 with each amplifier, in turn, driving full output swing into a 100 kΩ load. INPUT VOLTAGE PROTECTION A simple temperature to 4–20 mA transmitter is shown in Figure 5. After calibration, the transmitter is accurate to +0.5°C over the –50°C to +150°C temperature range. The transmitter operates from 8 V to 40 V with supply rejection better than 3 ppm/V. One half of the OP290 is used to buffer the VTEMP pins while the other half regulates the output current to satisfy the current summation at its noninverting input. IOUT = VTEMP ( R6 + R7)  R2 R6 R7  – VSET   R2 R10  R2 R10  100 LITHIUM SULPHUR DIOXIDE CELL VOLTAGE – V 80 60 The OP290 uses a PNP input stage with protection resistors in series with the inverting and noninverting inputs. The high breakdown of the PNP transistors coupled with the protection resistors provide a large amount of input protection, allowing the inputs to be taken 20 V beyond either supply without damaging the amplifier. SINGLE-SUPPLY OUTPUT VOLTAGE RANGE 40 20 0 0 500 1000 In single-supply operation the OP290’s input and output ranges include ground. This allows true “zero-in, zero-out” operation. The output stage provides an active pull-down to around 0.8 V above ground. Below this level, a load resistance of up to 1 MS2 to ground is required to pull the output down to zero. In the region from ground to 0.8 V, the OP290 has voltage gain equal to the data sheet specification. Output current source capability is maintained over the entire voltage range including ground. 1500 2000 HOURS 2500 3000 3500 Figure 4. Lithium Sulphur Dioxide Cell Discharge Characteristic with OP290 and 100 k Loads The change in output current with temperature is the derivative of the transfer function: ∆IOUT = ∆T ∆VTEMP (R6 + R7) ∆T R2 R10 –8– REV. A OP290 From the formulas, it can be seen that if the span trim is adjusted before the zero trim, the two trims are not interactive, which greatly simplifies the calibration procedure. Calibration of the transmitter is simple. First, the slope of the output current versus temperature is calibrated by adjusting the span trim, R7. A couple of iterations may be required to be sure the slope is correct. Once the span trim has been completed, the zero trim can be made. Remember that adjusting the offset trim will not affect the gain. The offset trim can be set at any known temperature by adjusting R5 until the output current equals: VARIABLE SLEW RATE FILTER   ∆I FS IOUT =  – TMIN ) + 4 mA  (T  ∆TOPERATING  AMBIENT Table I shows the values of R6 required for various temperature ranges. Table I. The circuit shown in Figure 6 can be used to remove pulse noise from an input signal without limiting the response rate to a genuine signal. The nonlinear filter has use in applications where the input signal of interest is known to have physical limitations. An example of this is a transducer output where a change of temperature or pressure cannot exceed a certain rate due to physical limitations of the environment. The filter consists of a comparator which drives an integrator. The comparator compares the input voltage to the output voltage and forces the integrator output to equal the input voltage. A1 acts as a comparator with its output high or low. Diodes D1 and D2 clamp the voltage across R3 forcing a constant current to flow in or out of C2. R3, C2, and A2 form an integrator with A2’s output slewing at a maximum rate of: 0.6 V VD ≈ R3 C 2 R3 C 2 For an input voltage slewing at a rate under this maximum slew rate, the output simply follows the input with A1 operating in its linear region. Maximum slew rate = Temperature Range 0°C to +70°C –40°C to +85°C –55°C to +150°C R6 (k ) 10 6.2 3 1N4002 V+ 8V TO 40V SPAN TRIM 2 6 3 R1 4 10k R4 20k 1/2 8 1 VTEMP R2 1k R3 100k R5 5k VSET 6 ZERO TRIM R6 3k 5 1/2 R7 5k R8 1k R9 100k 2N1711 VIN 2 REF-43BZ VOUT OP290EZ 4 VTEMP GND OP290EZ 7 R10 100 1%, 1/2W IOUT RLOAD Figure 5. Temperature to 4-20 mA Transmitter REV. A –9– OP290 +15V R1 250k C1 0.1 F 3 2 1/2 8 OP290GP 1 R2 100k The 200 Ω variable resistor is used to trim the output voltage. For the lowest temperature drift, parallel resistors can be used in place of the variable resistor and taken out of the circuit as required to adjust the output voltage. V+ 2 VIN R3 1M R4 D1 D2 5 1/2 6 25k C1 4700pF 7 REF-43FZ VOUT GND 4 3 4 6 2 1/2 8 1 OP290GP 2N2907A OP290GP 4 VOUT R2 R1A 2.37 1% R1B 200 20-TURN BOURNS 3006P-1-201 2k 1% C1 10 F VOUT –15V DIODES ARE 1N4148 C2 0.1 F Figure 6. Variable Slew Rate Filter LOW OVERHEAD VOLTAGE REFERENCE Figure 7 shows a voltage reference that requires only 0.1 V of overhead voltage. As shown, the reference provides a stable 4.5 V output with a 4.6 V to 36 V supply. Output voltage drift is only 12 ppm/°C. Line regulation of the reference is under 5 HV/V with load regulation better than 10 µV/mA with up to 50 mA of output current. The REF-43 provides a stable 2.5 V which is multiplied by the OP290. The PNP output transistor enables the output voltage to approach the supply voltage. Resistors R1 and R2 determine the output voltage. Figure 7. Low Overhead Voltage Reference  R2  VOUT = 2.5 V 1 +   R1  –10– REV. A OP290 Revision History Location Data Sheet changed from REV. 0 to REV. A. Page Edits to ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Edits to PACKAGE TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Edits to WAFER TEST LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Edits to DICE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 REV. A –11– – 12– C00327–0–1/02(A) PRINTED IN U.S.A.