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Zero-Drift, Zero-Crossover Operational Amplifier

February 8, 2017 By Texas Instruments

(Credit: Texas Instruments)

Texas Instruments (TI) introduced an operational amplifier (op amp) that features both zero-drift and zero-crossover technology.

The OPA388 op amp maintains precision across the entire input range for a variety of industrial applications, including test and measurement, medical and safety equipment, and high-resolution data-acquisition systems. 

The design of the OPA388 produces a combination of ultra-high input linearity and precision.

TI’s zero-drift technology eliminates temperature drift and flicker noise to attain the highest DC precision and dynamic error correction, while its zero-crossover topology eliminates offset errors caused by common-mode limitations to achieve linear output and true rail-to-rail input operation.

Features include:

  • Ultra-Low Offset Voltage: ±0.25 µV
  • Zero-Drift: ±0.005 µV/°C
  • Zero-Crossover: 140-dB CMRR True RRIO
  • Low Noise: 7.0 nV√Hz at 1 kHz
  • No 1/f Noise: 140 nVPP (0.1 Hz to 10 Hz)
  • Fast Settling: 2 µs (1 V to 0.01%)
  • Gain Bandwidth: 10 MHz
  • Single Supply: 2.5 V to 5.5 V
  • Dual Supply: ±1.25 V to ±2.75 V
  • True Rail-to-Rail Input and Output
  • EMI/RFI Filtered Inputs
  • Industry-Standard Packages:
    • Single in SOIC-8, SOT-23-5, and VSSOP-8
    • Dual in SOIC-8 and VSSOP-8
    • Quad in SOIC-14 and TSSOP-14

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