Current - Input Bias:	10nA
Base Part Number:	AD625
Supplier Device Package:	16-CDIP
Package / Case:	16-CDIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	±6 V ~ 18 V
Current - Supply:	3.5mA
Voltage - Input Offset:	10µV
Series:	--
-3db Bandwidth:	650kHz
Gain Bandwidth Product:	25MHz
Slew Rate:	5 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Instrumentation
Part Status:	Obsolete
Packaging:	Tube

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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

AD625CD application field and working principle

The AD625CD is a complete, high performance, low cost signal conditioning amplifier based on Linear Technology\'s proprietary widebandom CMOS process.

The AD625CD is configured as a two stage common source amplifier followed by a unity gain voltage follower. This two stage amplifier gives the unit excellent dynamic range, settling time and low output impedance. This amplifier operates at a temperature range of -40°C to +85°C and is ideal for applications requiring a high performance solution, such as signal conditioning, general purpose instrumentation and audio.

Applications of AD625CD include signal conditioning, instrumentation and audio. This high performance amplifier is suitable for use in data acquisition, electronics test and measurement and industrial process control applications.

Working principle of AD625CD

AD625CD is a CMOS input amplifier with a high common mode input range and a wide power supply range. It provides excellent common mode rejection and very low noise. The amplifier consists of two stages, with the first stage providing the gain and the second stage providing unity gain for the output.

The first stage of the amplifier is the common source (CS) stage. This uses the very low input impedance of CMOS transistors to increase the gain of the stage. The second stage is a unity gain voltage follower. The voltage follower provides a low output impedance and is used to buffer the output of the amplifier from the load.

The AD625CD can also be used in applications where the output must be isolated from the input, such as in high voltage applications. For these applications, the AD625CD can be used to drive an isolated transformer. The transformer provides electrical isolation of the output from the input, allowing the user to safely drive high voltage signals.

Conclusion

The AD625CD from Linear Technology is a high performance, low cost signal conditioning amplifier. It provides excellent dynamic range, settling time and low output impedance in a wide temperature range and is ideal for applications requiring high performance. Its wide power supply range and high common mode input range make it suitable for a variety of applications including signal conditioning, instrumentation and audio.

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