1 Features
• Low Power:
– Supply Voltage: 2.5 V to 5.5 V
– Quiescent Current: 1 mA (Typical)
– Power Down Mode: 0.5 μA (Typical)
• Bandwidth: 205 MHz
• Slew Rate: 560 V/μs
• Rise Time: 3 ns (2 VSTEP)
• Settling Time (0.1%): 22 ns (2 VSTEP)
• Overdrive Recovery Time: 60 ns
• SNR: 0.00013% (–117.6 dBc) at 1 kHz (1 VRMS)
• THD: 0.00003% (–130 dBc) at 1 kHz (1 VRMS)
• HD2/HD3: –85 dBc/–105 dBc at 1 MHz (2 VPP)
• Input Voltage Noise: 4.6 nV/√ Hz (f = 100 kHz)
• Input Offset Voltage: 65 μV (±400-μV Maximum)
• CMRR: 116 dB
• Output Current Drive: 50 mA
• RRO: Rail-to-Rail Output
• Input Voltage Range: –0.2 V to +3.9 V
(5-V Supply)
• Operating Temperature Range:
–40°C to +125°C

2 Applications
• Low-Power Signal Conditioning
• Audio ADC Input Buffers
• Low-Power SAR and ΔΣ ADC Drivers
• Portable Systems
• Low-Power Systems
• High-Density Systems

3 Description
The OPA836 and OPA2836 devices (OPAx836) are
single- and dual-channel, ultra-low power, rail-to-rail
output, negative-rail input, voltage-feedback (VFB)
operational amplifiers designed to operate over a
power-supply range of 2.5 V to 5.5 V with a single
supply, or ±1.25 V to ±2.75 V with a dual supply.
Consuming only 1 mA per channel and a unitygain
bandwidth of 205 MHz, these amplifiers set an
industry-leading power-to-performance ratio for rail-torail
amplifiers.
For battery-powered, portable applications where
power is of key importance, the low-power
consumption and high-frequency performance of the
OPA836 and OPA2836 devices offer performanceversus-
power capability that is not attainable in other
devices. Coupled with a power-savings mode to
reduce current to < 1.5 μA, these devices offer an
attractive solution for high-frequency amplifiers in
battery-powered applications.
The OPA836 RUN package option includes integrated
gain-setting resistors for the smallest possible
footprint on a printed-circuit board (approximately 2.00
mm × 2.00 mm). 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. See Table 9-1 and Table 9-2 for details.
The OPA836 and OPA2836 devices are characterized
for operation over the extended industrial temperature
range of –40°C to +125°C.