Features and Benefits
- Designed for 210°C operation
- Low noise
1 nV/√Hz input noise
45 nV/√Hz output noise
- High CMRR
126 dB (min) at G = 100
80 dB (min) to 5 kHz, G = 1
- See data sheet for additional features
- Download AD8229-KGD Data Sheet.
- Available As Known Good Die and fully guaranteed to data sheet specifications.
The AD8229 is an ultralow noise instrumentation amplifier designed for measuring small signals in the presence of large common-mode voltages and high temperatures.
The AD8229 has been designed for high temperature operation. The process is dielectrically isolated to avoid leakage currents at high temperatures. The design architecture was chosen to compensate for the low VBE voltages at high temperatures.
The AD8229 excels at measuring tiny signals. It delivers industry leading 1 nV/√Hz input noise performance. The high CMRR of the AD8229 prevents unwanted signals from corrupting the acquisition. The CMRR increases as the gain increases, offering high rejection when it is most needed.
The AD8229 is one of the fastest instrumentation amplifiers available. Its current feedback architecture provides high bandwidth at high gain, for example, 1.2 MHz at G = 100. The design includes circuitry to improve settling time after large input voltage transients. The AD8229 was designed for excellent distortion performance, allowing use in demanding applications such as vibration analysis.
Gain is set from 1 to 1000 with a single resistor. A reference pin allows the user to offset the output voltage. This feature can be useful when interfacing with analog-to-digital converters.
For the most demanding applications, the AD8229 is available in an 8-lead side-brazed ceramic dual in-line package (SBDIP). For space-constrained applications, the AD8229 is available in an 8-lead plastic standard small outline package (SOIC).
The AD8229 is also available as Known Good DieApplications
- Down-hole instrumentation
- Harsh environment data acquisition
- Exhaust gas measurements
- Vibration analysis
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Analog Devices provides a line of evaluation boards designed to help users evaluate our instrumentation amplifiers in 8 pin packages. Access the user guide UG-261.
This user guide describes three generic evaluation boards that can be used to evaluate many of Analog Devices instrumentation amplifiers. For information on the performance of a specific instrumentation amplifier, see the data sheet for that instrumentation amplifier.
- 3 generic, easy-to-use evaluation boards
- Shipped with an assortment of Analog Devices in-amps
- Solder in the in-amp to be tested
- Test pins already populated
- Decoupling capacitors already populated
- EVAL-INAMP-62RZ board: Compatible with AD620, AD621, AD622, AD623, AD627, AD8223, AD8225, LT1167, LT1168 and LT6370 in SOIC or PDIP
- EVAL-INAMP-82RZ board: Compatible with AD8221, AD8226, AD8227, AD8228, AD8229, AD8421, AD8428, and AD8429 in SOIC package
- EVAL-INAMP-82RMZ board: Compatible with AD8220, AD8221, AD8226, AD8227, AD8228, AD8236, and AD8421 in MSOP package
Documentation & Resources
Tools & Simulations
In-Amp Diamond Plot Tool
The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.