FEATURES
GENERAL DESCRIPTION
The AD8429 is an ultralow noise, instrumentation amplifier designed for measuring extremely small signals over a wide temperature range (−40°C to +125°C).
The AD8429 excels at measuring tiny signals. It delivers ultralow input noise performance of 1 nV/√Hz. The high CMRR of the AD8429 prevents unwanted signals from corrupting the acquisition. The CMRR increases as the gain increases, offering high rejection when it is most needed. The high performance pin configuration of the AD8429 allows it to reliably maintain high CMRR at frequencies well beyond those of typical instrumentation amplifiers.
FEATURES
Low noise
1 nV/√Hz input noise
45 nV/√Hz output noise
High accuracy dc performance (AD8429BRZ)
90 dB CMRR minimum (G = 1)
50 μV maximum input offset voltage
0.02% maximum gain accuracy (G = 1)
Excellent ac specifications
80 dB CMRR to 5 kHz (G = 1)
15 MHz bandwidth (G = 1)
1.2 MHz bandwidth (G = 100)
22 V/μs slew rate
THD: −130 dBc (1 kHz, G = 1)
Versatile
±4 V to ±18 V dual supply
Gain set with a single resistor (G = 1 to 10,000)
Temperature range for specified performance
−40°C to +125°C
APPLICATIONS
Medical instrumentation
Precision data acquisition
Microphone preamplification
Vibration analysis
Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.