Texas Instruments

OPA2834 Rail-to-Rail Out, Negative-Rail In, Voltage-Feedback (VFB) Op-Amp

Texas Instruments' 50 MHz op-amps set an industry-leading performance-to-power ratio for rail-to-rail amps

Image of Texas Instruments' OPA2834 Voltage-Feedback Op-AmpTexas Instruments' OPA2834 dual-channel, ultra-low-power, rail-to-rail output, negative-rail input VFB op-amps are designed to operate over a power-supply range of 2.7 V to 5.4 V (single supply) or ±1.35 V to ±2.7 V (dual supply). Consuming 170 µA per channel and with a unity-gain bandwidth of 50 MHz, these op-amps set an industry-leading performance-to-power ratio for rail-to-rail amps.

For battery-powered and portable applications where low power consumption is of key importance, the OPA2834 offers an excellent bandwidth-to-IQ ratio. These op-amps offer ultra-low distortion making them suitable for data acquisition systems and microphone pre-amps.

Features
  • Ultra-low power:
    • Supply voltage range: 2.7 V to 5.4 V
    • Quiescent current (IQ): 170 µA per channel (typ.)
  • Bandwidth: 50 MHz (G = 1 V/V)
  • Slew rate: 26 V/µs
  • Settling time (0.1%): 88 ns (2 VSTEP)
  • HD2, HD3: -131 dBc, -146 dBc at 10 kHz (2 VPP)
  • Input voltage noise: 12 nV/√Hz (f = 10 kHz)
  • Input offset voltage: 350 µV (±1.9 mV max)
  • Negative rail input, rail-to-rail output (RRO):
    • Input voltage range: -0.2 V to 3.9 V (5 V supply)
  • Operating temperature range: -40°C to +125°C
Applications
  • Current-sensing in power supplies
  • Low-power signal conditioning
  • Battery-powered applications
  • Portable voice recorders
  • Low-power SARs and ΔΣ ADC drivers
  • Portable devices

OPA2834 Voltage-Feedback Op-Amps

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC OPAMP VFB 2 CIRCUIT 8VSSOPOPA2834IDGKRIC OPAMP VFB 2 CIRCUIT 8VSSOP3778 - Immediate$13.75View Details
IC OPAMP VFB 2 CIRCUIT 8VSSOPOPA2834IDGKTIC OPAMP VFB 2 CIRCUIT 8VSSOP248 - Immediate$16.13View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionAmplifier TypeOutput TypeVoltage - Supply, Single/Dual (±)Available QuantityPriceView Details
BOARD DEMO FOR 8MSOP DUAL OPAMPSDEM-OPA-MSOP-2ABOARD DEMO FOR 8MSOP DUAL OPAMPSStandard (General Purpose)Single-Ended-3 - Immediate$49.39View Details
Published: 2019-11-15

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