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12.6V, Low-noise, single-ended-to-differential, high input impedance amplifier

Availability: 683


Package | PIN: SOIC (D) | 8
Temp: Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
Qty Price
1-99 $4.28
100-249 $3.84
250-999 $2.75
1,000+ $2.33


  • Wide supply range: 3 V to 12.6 V
  • High input impedance: 325 MΩ
  • Voltage noise:
    • Input-referred (f ≥ 5 kHz): 2.3nV/√Hz
    • Output-referred (f ≥ 10 kHz): 8.3nV/√Hz
  • Differential output offset: ±700 µV (maximum)
  • Output offset drift: ±1.5 µV/°C (typical)
  • A2 bias current cancellation, IB: ±5 nA (typical)
  • Gain-bandwidth product: 400 MHz
  • Small-signal bandwidth: 44 MHz (G = 2 V/V)
  • Slew rate: 140 V/µs
  • HD2, HD3 (VOD = 10 VPP, 50 kHz):
    –122 dBc, –140 dBc
  • Rail-to-rail output:
    • Highlinear output current: 60 mA (typ)
  • Quiescent current: 3.1 mA
  • Disable mode: 12-µA quiescent current
  • Extended temperature operation:
    –40°C to +125°C

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Texas Instruments  XOPA862IDT

The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driverwith high input impedance for directly interfacing with sensors. The device only consumes 3.1-mAquiescent current for an output-referred noise density of 8.3 nV/√Hz in again of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩresistors must be less than 1 nV/√Hz to achieve the OPA862 equivalentoutput-referred noise density of 8.3 nV/√Hz. The OPA862 can be configuredfor other gains using external resistors. The device has a large gain-bandwidth product of 400 MHzand a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bitperformance over comparable single-ended-to-differential ADC drivers. The device includes areference input pin for setting the output common-mode voltage.

The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V,and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortionperformance for 18-bit systems. The device includes a disable mode that consumes only 12-µAquiescent current in power-down state.

The OPA862 is rated to work over the extended industrial temperature range of –40°C to+125°C.