OPA111BM

The OPA111BM is an excellent single operational amplifier chip, and its brief description is as follows:   – Basic Information: It belongs to the linear amplifier category in integrated circuits and is an instrumentation amplifier with 1 circuit. It adopts the through-hole mounting type, and its package is TO-99-8 metal can, with the packaging being in tube form.   – Performance Parameters: The slew rate is 2V/μs, the gain-bandwidth product is 2MHz, the current-input bias is 0.5pA, the voltage-input offset is 50μV, the current-supply is 2.5mA, the current-output/channel is 10mA, the voltage-supply range is ±5V – 18V, and the operating temperature range is -25°C – 85°C.   – Features: It has low noise, with a maximum of 8nV/√Hz at 10kHz; low bias current, with a maximum of 1pA; low voltage offset, with a maximum of 250µV; low drift, 1µV/°C max; high open-loop gain, with a minimum of 120dB; and high common-mode rejection ratio, with a minimum of 100dB.   – Working Principle: As a single operational amplifier chip, it has a non-inverting input terminal and an inverting input terminal. The input signal is fed in from these two terminals, and after being amplified by the internal circuit, it is output from the output terminal. It can achieve functions such as inverting amplification and non-inverting amplification according to which input terminal the input signal is connected to and the configuration of the external circuit.   – Application Areas: It is often used in precision instruments and meters to ensure measurement accuracy; in data acquisition systems, it can effectively amplify weak signals; in testing equipment, it can be the core of the signal conditioning circuit; in the photoelectric field, it is used to process the weak signals after photoelectric conversion; it is also used in medical equipment such as CAT scanners; and it can be used in equipment in radiation environments.