BUF802 Wide-Bandwidth High-Input Impedance JFET Buffer

Texas Instruments' 2.3 nV/√Hz open-loop buffer is ideal for data acquisition systems (DAQ)

Image of Texas Instruments' BUF802 Wide-Bandwidth High-Input Impedance JFET BufferTexas Instruments' BUF802 is an open-loop, unity gain buffer with a JFET-input stage that offers low-noise, high-impedance buffering for DAQ front-ends. The buffer supports DC to 3.1 GHz of bandwidth while offering excellent distortion and noise performance across the frequency range. The BUF802 can be used in a composite loop with a precision amplifier in applications that require higher precision performance.

The BUF802 uses an innovative architecture to simplify the design of high-precision, wide-bandwidth composite loops. The adjustable quiescent current pin enables designers to trade bandwidth and distortion for a lower quiescent current, making the buffer device suitable across a wide frequency range. The BUF802 has integrated input and output clamps to protect the device and its subsequent signal chain from overdrive voltages.

  • Large-signal bandwidth (1 VPP): 3.1 GHz
  • Slew rate: 7,000 V/μs
  • Input voltage noise: 2.3 nV/√Hz
  • 1% settling time: 0.7 ns
  • Input-impedance: 50 GΩ || 2.4 pF
  • Capable of driving a 50 Ω load
  • Adjustable quiescent current for power and performance trade-off
  • Integrated input and output clamp with fast overdrive recovery
  • Voltage supply range: ±4.5 V to ±6.5 V
  • Oscilloscope front-ends
  • High-frequency DAQ
  • High input-impedance and high slew rate T&M systems
  • Oscilloscope encoders and front-end add-on cards
  • Active probes
  • Non-destructive testing (NDT)

BUF802 Wide-Bandwidth High-Input Impedance JFET Buffer

ImageManufacturer Part NumberDescriptionAmplifier TypeNumber of CircuitsOutput TypeAvailable QuantityView Details

Evaluation Board

ImageManufacturer Part NumberDescriptionChannels per ICAmplifier TypeOutput TypeAvailable QuantityView Details
EVAL BOARD FOR BUF802BUF802RGTEVMEVAL BOARD FOR BUF8021 - SingleBufferSingle-Ended7 - ImmediateView Details
Published: 2022-03-04