AD8229

Data Sheet 1 nV/√Hz Low Noise 210°C Instrumentation Amplifier AD8229 FEATURES Designed and guaranteed for 210°C operation Low noise 1 nV/√Hz input noise 45 nV/√Hz output noise High CMRR 126 dB CMRR (minimum), G = 100 80 dB CMRR (minimum) to 5 kHz, G = 1 Excellent ac specifications 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 ±17 V dual supply Gain set with single resistor (G = 1 to 1000) Specified temperature range −40°C to +210°C, SBDIP package −40°C to +175°C, SOIC package APPLICATIONS Down-hole instrumentation Harsh environment data acquisition Exhaust gas measurements Vibration analysis GENERAL DESCRIPTION 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 ...