OP249GSZ-REEL Integrated Circuits (ICs)

Voltage - Input Offset:	200µV
Base Part Number:	OP249
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	±4.5 V ~ 18 V
Current - Output / Channel:	36mA
Current - Supply:	5.6mA
Series:	--
Current - Input Bias:	30pA
Gain Bandwidth Product:	4.7MHz
Slew Rate:	22 V/µs
Output Type:	--
Number of Circuits:	2
Amplifier Type:	J-FET
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to OP249GSZ-REEL

The OP249GSZ-REEL is a monolithic, low power, low noise operational amplifier. It is designed for bridge/strain gauge-based signal conditioning where low offset, high common mode transient immunity, low power and small size are important considerations.

Application Field and Working Principle

The OP249GSZ-REEL is part of a family of operational amplifiers from Linear Technology. It is used in a variety of linear applications including instrumentation, signal conditioning, active filters, and closed loop control systems. The amplifier is well suited for precision signal conditioning of signals from strain gages, resistive bridges, and other low level transducers.The OP249GSZ-REEL is a high performance monolithic operational amplifier. It operates in single power supply systems as low as ±5V and draws an extremely low supply current of 0.8mA. A minimum of 1mA is specified when the output of the OP249 is shorted to ground. With wide bandwidth of 65MHz and slew rate of 20V/µs, the OP249GSZ-REEL is ideal for high speed applications.The output of the OP249GSZ-REEL will swing rail-to-rail, making it fully compliant with the A/D converter input range in bridge/strain gauge type signal conditioning applications. It has a high common-mode rejection ratio (CMRR) of 100dB across the entire common mode voltage range from -VS to +VS. The amplifier also has an exceptionally low offset of 6μV. The OP249GSZ-REEL consists of four equal pieces in a 1-µm (micron) CMOS process, making it especially capable of maintaining precision, high-speed operation at low power levels.The amplifier also exhibits low input bias current of 200pA. This low bias can be important in precision circuits, where it prevent errors introduced by the vagaries of bias current in more sensitive transducer designs. The noise performance of the OP249GSZ-REEL is also likely to be beneficial in some applications due to its low 1/f noise voltage corner of 0.1 Hz at 4 nV/√Hz and thermal noise at 900 µVrms. The combination of low bias, low noise and wide speed transitions work together to make the OP249GSZ-REEL a suitable choice for precision applications, such as bridge/strain gauge based data acquisition systems.

Conclusion

The OP249GSZ-REEL from Linear Technology is a low power, low noise operational amplifier designed for precision signal conditioning. It has low offset, wide bandwidth, and low inflation current, and is capable of rail-to-rail output swings. This device is well suited for bridge/strain gauge-based signal conditioning in applications where low offset, high common mode transient immunity, low power, and small size are key considerations. This amplifier is designed for a single power supply in the range of ±5V and draws an extremely low supply current of 0.8mA.

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