AD521LD

.. ,. ANALOG W DEVICES IntegratedCircuit PrecisionInstrumentation Amplifier AD521 [ FEATURES Programmable Gains from 0.1 to 1000 Differential Inputs High CMRR: 11OdBmin Low Drift: 2p.Vfc max (L) Complete Input Protection, Power ON and Power OFF Functionally Complete with the Addition of Two Resistors Internally Compensated Gain Bandwidth Product: 4OMHz Output Current Limited: 25mA Very LowNoise: 05p.V p-p, 0.1Hzto 10Hz, RTI (I G -1000 Chips are Available Not Reco mme PRODUCT DESCRIPTION The AD521 is a second generation, low cost, monolithic IC instrUmentation amplifier developed by Analog Devices.As a trUe instrUmentation amplifier, the AD521 is a gain block with differential inputs and an accurately programmable input/ output gain relationship. The AD521 IC instrUmentation amplifier should not be confused with an operational amplifier, although several manufactUrers(including Analog Devices)offer op amps which can be used as building blocks in variable gain instrumentation amplifier circuits. Op amps are general-purpose components which, when used with precision-matched external resistors, can perform the instrUmentation amplifier function. nded An instrumentation amplifier is a precision differential voltage gain device optimized for operation in a real world environment, and is intended to be used wherever acquisition of a useful signal is difficult. It is characterized by high input impedance, balanced differential inputs, low bias currents and high CMR. As a complete instrUmentation amplifier, the AD521 requires only two resistors to set its gain to any value between 0.1 and 1000. The ratio matching of these resistors does not affect the high CMRR (up to 120dB) or the high input impedance (3 X 109il) of the AD521. Furthermore, unlike most operational amplifier-based instrUmentation amplifiers, the inputs are protected against overvoltagesup to :1:15volts beyond the supplies. The AD521 IC instrumentation amplifier is available in four different versions of accuracy and operating temperatUre range. The economical "J" grade, the low drift "K" grade, and the lower drift, higher linearity "L" grade are specified from 0 to 01::\/ 1\ I PIN CONFIGURATION + INPUT I 1 141 ~AIN GAI~ 12 131 ~ALE OFFSET TRIMI 4 OFFSET TRIMI 8 9 OUTPUT 81 v+ I 7 a I COMPo +70°C.The "S" grade guarantees performance to specification over the eXtended temperatUre range: -SSoC to +125°C. PRODUCT HIGHLIGHTS 1. The ADS21 is a trUe instrumentation amplifier in integrated circuit form, offering the user performance comparable to many modular instrumentation amplifiers at a fraction of the cost. for n ew D esig 2. The AD521 has low guaranteed input offset voltage drift (21lVf C for L grade) and low noise for precision, high gain applications. ns 3. The AD521 is functionally complete with the addition of two resistors. Gain can be preset from 0.1 to more than 1000. 4. The AD521 is fully protected for input levelsup to 15V beyond the supply voltages and JOV differential at the inputs. 5. Internally compensated for all gains, the AD521 also offers the user the provision for limiting bandwidth. 6. Offset nulling can be achieved with an optional trim pot. 7. The AD521 offers superior dynamic performance with a gain-bandwidth product of 40MHz, full peak response of 100kHz (independent of gain) and a settling time of 5p.s to 0.1% of a 10V step. -~ ~-- ~_. ~ AD521* Product Page Quick Links Last Content Update: 11/01/2016 Comparable Parts Design Resources View a parametric search of comparable parts • • • • Documentation Data Sheet • AD521: Integrated Circuit Precision Instrumentation Amplifier Data Sheet Technical Books • A Designer's Guide to Instrumentation Amplifiers, 3rd Edition, 2006 AD521 Material Declaration PCN-PDN Information Quality And Reliability Symbols and Footprints Discussions View all AD521 EngineerZone Discussions Sample and Buy Reference Materials Visit the product page to see pricing options Technical Articles • Auto-Zero Amplifiers • High-performance Adder Uses Instrumentation Amplifiers Technical Support Submit a technical question or find your regional support number * This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to the content on this page does not constitute a change to the revision number of the product data sheet. This content may be frequently modified. AD521-SPECIFICATIONS (typical @ Vs = :t15V, RL= ~ AD521JD GAIN Ra..e (For Spocified Operation, Note I) Equation Error from Equation Nonlin..rity (NatO 2) I..G2MHz 300kHz 200kHz 40kHz 75kHz 26kHz 24kHz 6kHz 100kHz 10V/lis 711' 511S lOlls 35l1s G. 100 G.lOOO DifforcntiaJ Overload Recovery (130V Input to within 10mV of Final Value) (NatO 4) G - 1000 2kO and TA = mme SOliS Common Mode StOp Recovery (30V Input to within 10mV of Final Value) (NatO 5) G =1000 VOLTAGE OFFSET (may be nulled) Input Offset Voltage (Vas,) vs. Temporature vs. Supply Output Offset Voltage (Vaso) vs. Temporature vs. Supply (Narc 6) nded lOllS 3mV max (2mV typ) 1511VtC max (7I1VtC typ) 311V/% 4OOmV max (200mV typ) 4OOIIVtCmax (l50IlV!':C typ) 0.005VOSO/% l.5mV max (0.5mV ryp) 511VtC max (l.5I1Vfc typ) l.Omv max (0.5mV typ) 2IIV/.C max 200mV max (30mV typ) 150llVfc max (50IlV!':C typ) lOOmV max 7511VtCmax 80nA max InAtC max 2 %IV 20nA max 4OnA max 250pAtC 125pAtC INPUT CURRENTS Input vs. vs. Input vs. INPUT Bias Current (either input) Temporature Supply Offser Current Temporature Differential Input Impodance (NatO 7) Common Mode Input Impedance (NatO 8) Input Voltage Range for Specified Poriorrnance (with rospect to ground) Maximum Voltage without Damage to Unit, Power ON or OFF Differential Mode (Note 9) Voltage at either input (Narc 9) Common Mode Rejection Ratio, DC to 60Hz with IH1 source unbalance Gol GolO GolOO G . 1000 max Oporati!ll Voltage Ra..e Quincent Supply Current TEMPERATURE RANGE Spooned Performance Oporating Storage . 500pAfC max . ew . D esig 10nA max max ns 3 x 1O911111.8pF 6 x lO'O11113.0pF tlOV 30V Vs tl5V 70dB min (74dB typ) 90dB min (94dB typ) lOOdB min (l04dB typ) lOOdB min (lIOdB typ) NOISE Voltage RTO (p-p)@O.IHz to 10Hz (Narc 10) RMS RTO, 10Hz to 10kHz Input Current, rms, 10Hz to 10kHz REFERENCE TERMINAL Bias Current Input Resistance Voltage Range Gain to Output POWER SUPPLY fo. r n 74dB min (80dB typ) 94dB min (lOOdB typ) 1O4dB min (l14dB typ) - llOdB min (l20dB trP,) - - 311A IOM11 tlOV I - t5V to U8V SmA max 0 to +70.C -25.C to +85.C -65.C to +150.C -55.Cto+125.C -55.C to +125.C -- °Specificatiom AD521JD. ooSpec:if'ocatioaa AD5Z1KD. Specificatioaaoubjoct10