OPA2835IDR

The OPA835 and OPA2835 devices (OPAx835) are single/dual-channel ultra-low-power, rail-to-rail output, negative rail input, voltage feedback (VFB) op amps designed to operate from a single supply of 2.5V to 5.5V or dual supplies of ±1.25V to ±2.75V. These rail-to-rail amplifiers consume only 250μA per channel with a 56MHz gain bandwidth product, delivering industry-leading performance-to-power ratio. The OPA835 and OPA2835 devices combine low power consumption with excellent high-frequency performance, offering a performance-to-power ratio unmatched by competing devices, making them ideal for power-conscious, battery-powered portable applications. These devices also feature a power-save mode that reduces current to below 1.5μA, an extremely attractive solution for high-frequency amplifiers in battery-powered applications. The OPA835 and OPA2835 devices operate over an extended industrial temperature range of –40°C to +125°C.

Applications

• Low-power signal conditioning
• Audio ADC input buffer
• Low-power SAR and ΔΣ ADC driver
• Portable systems
• Low-power systems
• High-density systems
• Ultrasonic flow meters

Key features

• Ultra-low power consumption
• Supply voltage: 2.5V to 5.5V
• Quiescent current: 250μA/ch (typical)
• Power-down mode: 0.5μA (typical)
• Bandwidth: 56MHz (AV = 1V/V)
• Slew rate: 160V/μs
• Rise time: 10ns (2VSTEP)
• Settling time (0.1%): 55ns (2VSTEP)
• Overdrive recovery time: 200ns
• SNR: 0.00015% (-116.4dBc) at 1kHz (1VRMS)
• THD: 0.00003% (-130dBc) at 1kHz (1VRMS)
• HD2/HD3: -70dBc/-73dBc at 1MHz (2VPP)
• Input voltage noise: 9.3nV/√Hz (f = 100kHz)
• Input offset voltage: 100μV (max ±500μV)
• CMRR: 113dB
• Output current drive: 40mA
• RRO: Rail-to-rail output
• Input voltage range: –0.2V to 3.9V (5V supply)
• Operating temperature range: –40°C to +125°C