This family of amplifiers has ultralow offset, drift, and bias current. The AD8571, AD8572, and AD8574 are single, dual, and quad amplifiers, respectively, featuring rail-to-rail input and output swings. All are guaranteed to operate from 2.7 V to 5 V single supply.

The AD857x family provides benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices, Inc., topology, these zero-drift amplifiers combine low cost with high accuracy. (No external capacitors are required.) Using a patented spread-spectrum, auto-zero technique, the AD857x family eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications.

With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the AD857x family is perfectly suited for applications where error sources cannot be tolerated. Position and pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range. Many more systems require the rail-to-rail input and output swings provided by the AD857x family.

Applications

Temperature sensors

Pressure sensors

Precision current sensing

Strain gage amplifiers

Medical instrumentation

Thermocouple amplifiers

Data Sheet, Rev. D, 6/08

Part#	Small Signal Bandwidth	Slew Rate	Vos	Ib	V Noise Density	Amplifiers Per Package	Widest Temp Range (°C)
AD8554	1.5MHz	400mV/µs	1µV	10pA	42nV/rtHz	4	-40 to +125
AD8574	1.5MHz	400mV/µs	1µV	10pA	51nV/rtHz	4	-40 to +125
AD8630	2.5MHz	1V/µs	1µV	100pA	22nV/rtHz	4	-40 to +125
AD8643	3.5MHz	3V/µs	50µV	250fA	27.5nV/rtHz	4	-40 to +125
AD8664	4MHz	3.5V/µs	50µV	300fA	12nV/rtHz	4	-40 to +125
ADA4000-4	5MHz	20V/µs	200µV	5pA	16nV/rtHz	4	-40 to +125
AD8608	10MHz	5V/µs	20µV	200fA	6.5nV/rtHz	4	-40 to +125
AD8668	4MHz	3.5V/µs	600µV	200fA	10nV/rtHz	4	-40 to +125
AD8694	10MHz	5V/µs	400µV	200fA	8nV/rtHz	4	-40 to +125
AD8604	8.4MHz	6V/µs	500µV	200fA	18nV/rtHz	4	-40 to +125
AD8544	1MHz	920mV/µs	1mV	4pA	40nV/rtHz	4	-40 to +125

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

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