OPA2836IRMCR

The OPA836 and OPA2836 devices (OPAx836) are single- and 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 1mA per channel with a unity-gain bandwidth of 205MHz, achieving an industry-leading power/performance ratio. The OPA836 and OPA2836 devices combine low power consumption with excellent high-frequency performance, delivering a performance-to-power ratio unmatched by comparable devices, making them ideal for power-sensitive, battery-powered portable applications. These devices also feature a power-save mode that reduces current to below 1.5μA, providing an attractive solution for high-frequency amplifiers in battery-powered applications. The OPA836 RUN package option includes integrated gain-setting resistors, enabling an ultra-compact PCB footprint of approximately 2.00mm × 2.00mm. By adding circuit traces on the PCB, gains of +1, –1, –1.33, +2, +2.33, –3, +4, –4, +5, –5.33, +6.33, –7, +8 and inverting attenuations of –0.1429, –0.1875, –0.25, –0.33, –0.75 can be achieved. The OPA836 and OPA2836 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

Key features

• Low power consumption:
• Supply voltage: 2.5V to 5.5V
• Quiescent current: 1mA (typical)
• Power-down mode: 0.5μA (typical)
• Bandwidth: 205MHz
• Slew rate: 560V/μs
• Rise time: 3ns (2VSTEP)
• Settling time (0.1%): 22ns (2VSTEP)
• Overdrive recovery time: 60ns
• SNR: 0.00013% (-117.6dBc) at 1kHz (1VRMS)
• THD: 0.00003% (-130dBc) at 1kHz (1VRMS)
• HD2/HD3: -85dBc/-105dBc at 1MHz (2VPP)
• Input voltage noise: 4.6nV/√Hz (f = 100kHz)
• Input offset voltage: 65μV (max ±400μV)
• CMRR: 116dB
• Output current drive: 50mA
• RRO: Rail-to-rail output
• Input voltage range: –0.2V to +3.9V (5V supply)
• Operating temperature range: –40°C to +125°C