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Home » NEWEST Products » New by Category » Semiconductors » Amplifier ICs » Differential Amplifiers » ADA4940 ADC Drivers - Analog Devices
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Analog Devices ADA4940 Fully Differential ADC Drivers

Analog Devices ADA4940 Fully Differential ADC Drivers

Analog Devices ADA4940 Fully Differential ADC Drivers are low noise, low distortion differential amplifiers with very low power consumption. They are an ideal choice for driving low power, high resolution, high performance SAR and sigma-delta (Σ-Δ) analog-to-digital converters (ADCs) with resolutions up to 18 bits from dc to 1 MHz on only 1.25 mA of quiescent current.
With the ADA4940-1/ADA4940-2, differential gain configurations are easily realized with a simple external feedback network of four resistors determining the closed-loop gain of the amplifier. The ADA4940-1/ADA4940-2 are fabricated using Analog Devices, Inc., complementary bipolar process, enabling them to achieve very low levels of distortion with an input voltage noise of only 3.9 nV/√Hz. The low dc offset and excellent dynamic performance of the ADA4940-1/ADA4940-2 make them well suited for a variety of data acquisition and signal processing applications.

Features
  • Small signal bandwidth: 260MHz
  • Extremely low harmonic distortion
    • −122dB THD at 50kHz
    • −96dB THD at 1MHz
  • Low input voltage noise: 3.9nV/√Hz
  • Very low power consumption: 6.25mW (5 V supply)
  • 0.35 mV maximum offset voltage
  • Externally adjustable gain
  • Differential-to-differential or single-to-differential operation
  • Balanced outputs
  • Settling time to 0.1%: 34ns
  • Output voltage swing from −VS + 0.1V to +VS − 0.1V
  • Adjustable output common-mode voltage
  • Flexible power supplies: 3V to 7V
Applications
  • Low power ADC drivers
  • Single-ended-to-differential converters
  • Differential buffers
  • Line drivers
  • Medical Imaging
  • Industrial Process Control
  • Portable Electronics
Part Number Package / Case Number of Channels Input Offset Voltage Slew Rate Data Sheet
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  • Semiconductors|Integrated Circuits|IC-Power Management