OPA2834

Product Folder Order Now Technical Documents Tools & Software Support & Community OPA2834 SBOS973A – JUNE 2019 – REVISED SEPTEMBER 2019 OPA2834 50-MHz, 170-µA, Negative-Rail In, Rail-to-Rail Out, Voltage-Feedback Amplifier 1 Features 1 Ultra-low power: – Supply voltage: 2.7 V to 5.4 V – Quiescent current (IQ): 170 µA/ch (typical) Bandwidth: 50 MHz (G = 1 V/V) Slew rate: 26 V/µs Settling time (0.1%): 88 ns (2-VSTEP) HD2, HD3: –131 dBc, –146 dBc at 10 kHz (2 VPP) Input voltage noise: 12 nV/√Hz (f = 10 kHz) Input offset voltage: 350 µV (±1.9 mV max) Negative rail input, rail-to-rail output (RRO) – Input voltage range: –0.2 V to 3.9 V (5-V supply) Operating temperature range: –40°C to +125°C 2 Applications Current sensing in power supplies Low-power signal conditioning Battery-powered applications Portable voice recorders Low-power SAR and ΔΣ ADC driver Portable devices 3 Description The OPA2834 is a dual-channel, ultra-low-power, railto-rail output, negative-rail input, voltage-feedback (VFB) operational amplifier designed to operate over a power-supply range of 2.7 V to 5.4 V with a single supply, or ±1.35 V to ±2.7 V with a dual supply. Consuming only 170 µA per channel and with a unitygain bandwidth of 50 MHz, this amplifier sets an industry-leading performance-to-power ratio for railto-rail amplifiers. For battery-powered and portable applications where low power consumption is of key importance, the OPA2834 offers an excellent bandwidth t...