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.