AD8429

www.DataSheet4U.net 1 nV/√Hz Low Noise Instrumentation Amplifier AD8429 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 PIN CONNECTION DIAGRAM –IN RG RG +IN 1 2 3 4 AD8429 8 7 6 5 +VS VOUT REF –VS 09730-001 TOP VIEW (Not to Scale) Figure 1. APPLICATIONS Medical instrumentation Precision data acquisition Microphone preamplification Vibration analysis 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. The AD8429 reliably amplifies fast changing signals. Its curre...