Document
SM73308 Low Offset, Low Noise, RRO Operational Amplifier
SM73308
June 1, 2011
Low Offset, Low Noise, RRO Operational Amplifier
General Description
The SM73308 is a Single low noise precision operational amplifier intended for use in a wide range of applications. Other important characteristics include: an extended operating temperature range of −40°C to 125°C, the tiny SC70-5 package, and low input bias current.
The extended temperature range of −40°C to 125°C allows the SM73308 to accommodate a broad range of applications. The SM73308 expands National Semiconductor’s Silicon Dust™ amplifier portfolio offering enhancements in size, speed, and power savings. The SM73308 is guaranteed to operate over the voltage range of 2.7V to 5.0V and has railto-rail output.
The SM73308 is designed for precision, low noise, low voltage, and miniature systems. This amplifier provides rail-to-rail output swing into heavy loads. The maximum input offset is 850 μV at room temperature and the input common mode voltage range includes ground.
The SM73308 is offered in the tiny SC70-5 package.
Features
(Unless otherwise noted, typical values at VS = 2.7V)
■ Renewable Energy Grade
■ Guaranteed 2.7V and 5V specifications
■ Maximum VOS
850μV (limit)
■ Voltage noise
— f = 100 Hz — f = 10 kHz
12.5nV/√Hz 7.5nV/√Hz
■ Rail-to-Rail output swing
— RL = 600Ω — RL = 2kΩ
■ Open loop gain with RL = 2kΩ ■ VCM ■ Supply current
100mV from rail 50mV from rail 100dB 0 to V+ −0.9V 550µA
■ Gain bandwidth product
3.5MHz
■ Temperature range
−40°C to 125°C
Applications
■ Transducer amplifier ■ Instrumentation amplifier ■ Precision current sensing ■ Data acquisition systems ■ Active filters and buffers ■ Sample and hold ■ Portable/battery powered electronics ■ Automotive
Connection Diagram
SC70-5
Instrumentation Amplifier
Top View
30155567
Silicon Dust™ is a trademark of National Semiconductor Corporation.
© 2011 National Semiconductor Corporation 301555
30155536
www.national.com
SM73308
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
ESD Tolerance (Note 2) Machine Model Human Body Model
Differential Input Voltage Voltage at Input Pins Current at Input Pins Supply Voltage (V+–V −) Output Short Circuit to V+ Output Short Circuit to V−
200V 2000V ± Supply Voltage (V+) + 0.3V, (V–) – 0.3V ±10 mA 5.75V (Note 3) (Note 4)
Mounting Temperture Infrared or Convection (20 sec) Wave Soldering Lead Temp
(10 sec) Storage Temperature Range Junction Temperature (Note 5)
235°C
260°C −65°C to 150°C
150°C
Operating Ratings (Note 1)
Supply Voltage Temperature Range Thermal Resistance (θJA)
2.7V to 5.5V −40°C to 125°C
440 °C/W
2.7V DC Electrical Characteristics (Note 11)
Unless otherwise specified, all limits are guaranteed for TA = 25°C. V+ = 2.7V, V − = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperatur.