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OPA2836 Datasheet

Part NameDescriptionManufacturer
OPA2836 Very-Low-Power, Rail-to-Rail Out, Negative Rail In, Voltage-Feedback Operational Amplifiers TI
Texas Instruments TI
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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 unity-gain bandwidth of 205 MHz, these amplifiers set an industry-leading power-to-performance ratio for rail to-rail 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 performance versus-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 3 and Table 4 for details.
The OPA836 and OPA2836 devices are characterized for operation over the extended industrial temperature range of –40°C to +125°C.

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

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

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