XR620AIDP8

XR620A Instrumentation Amplifier FE ATU R E S ■■ ±2.3V to ±18V supply voltage range ■■ Gain range of 1 to 10,000 ■■ Gain set with one external resistor ■■ ±125μV maximum input offset voltage ■■ 0.1μV/°C input offset drift ■■ 700kHz bandwidth at G = 1 ■■ 1.2V/μs slew rate ■■ 90dB minimum CMRR at G = 10 ■■ 2.2mA maximum supply current ■■ 6.6nV/√Hz input voltage noise ■■ 70nV/√Hz output voltage noise ■■ 0.2μV pp input noise (0.1Hz to 10Hz) ■■ DIP-8 or Pb-free SOIC-8 General Description The XR620A is a low power, general purpose instrumentation amplifier with a gain range of 1 to 10,000. The XR620A is offered in 8-lead SOIC or DIP packages and requires only one external gain setting resistor making it smaller and easier to implement than discrete, 3-amp designs. While consuming only 2.2mA of supply current, the XR620A offers a low 6.6nV/Hz input voltage noise and 0.2μVpp noise from 0.1Hz to 10Hz. The XR620A offers a low input offset voltage of ±125μV that only varies 0.1μV/°C over it’s operating temperature range of -40°C to +85°C. The XR620A also features 50ppm maximum nonlinearity. These features make it well suited for use in data acquisition systems. A P P LICATION S ■■ Bridge amplifier ■■ Weigh scales ■■ Thermocouple amplifier ■■ ECG and medical instrumentation ■■ MRI (Magnetic Resonance Imaging) ■■ Patient monitors ■■ Transducer interface ■■ Data acquisition systems ■■ Strain gauge amplifier ■■ Industrial process controls Ordering Information - back page Competitive Plot Typical Application 3 2 +VS 1 7 XR620A RG VOUT 6 5 8 +Input Competitor A 1 2 Normalized Gain (dB) –Input Load 4 Reference 3 0 -1 -3 -4 -5 –VS XR620A -2 -6 G=1 VS = ±15V VOUT = 0.2Vpp RL = 2kΩ -7 0.0001 To Power Supply Ground 0.001 0.01 0.1 1 10 Frequency (MHz) Thermocouple Amplifier © 2013-2015 Exar Corporation 1 / 15 exar.com/XR620A Rev 1B XR620A Absolute Maximum Ratings Operating Conditions Stresses beyond the limits listed below may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Supply Voltage Range........................ ±2.3V to ±18V (4.6V to 36V) Gain Range................................................................... 1 to 10,000 Operating Temperature Range..................................-40°C to 85°C Junction Temperature............................................................ 150°C Storage Temperature Range....................................-65°C to 150°C Supply Voltage.........................................................................±18V Lead Temperature (Soldering, 10s).......................................260°C Input Voltage Range.............................................................. ±VS V Differential Input Voltage (G = 1 to 10)...................................... 25V Package Thermal Resistance Differential Input Voltage (G > 10)............... ≤ 0.05 (RG + 800) +1 V θJA (DIP-8).........................................................................100°C/W Load Resistance (min)................................................................. 1Ω θJA (SOIC-8)......................................................................150°C/W Package thermal resistance (θJA), JEDEC standard, multi-layer test boards, still air. ESD Protection SOIC-8 (HBM)........................................................................ 1.5kV ESD Rating for HBM (Human Body Model). © 2013-2015 Exar Corporation 2 / 15 exar.com/XR620A Rev 1B XR620A Electrical Characteristics TA = 25°C, VS = ±15V, RL = 2kΩ to GND; unless otherwise noted. Gain = 1 + (49.4k/RG); Total RTI Error = VOSI + (VOSO/G) Symbol Parameter Conditions Min Typ Max Units Gain Gain Range 1 Gain Error (1) -0.1 0.1 % G = 10, VOUT = ±10V -0.375 0.375 % G = 100, VOUT = ±10V -0.375 0.375 % -0.8 0.8 % 10 50 ppm G = 1 - 100, VOUT = -10V to 10V, RL = 2kΩ 10 95 G=1 1