Retour à Analog Devices Inc.

Analog Devices Inc. Pilotes de CAN intégralement différentiels ADA4940

Les pilotes de CAN intégralement différentiels Analog Devices ADA4940 sont des amplificateurs différentiels à bruit et distorsion faibles dont la consommation d'énergie est très basse. Ils sont un choix idéal pour le pilotage de convertisseurs analogique/numérique (CAN) sigma-delta (Σ-Δ) à faible consommation, haute résolution et hautes performances SAR, avec des résolutions pouvant atteindre 18 bits sur CC jusqu'à 1 MHz avec un courant de repos de seulement 1,25 mA.

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 3.9nV/√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.

Analog Devices offers the ADA4940-1AR-EBZ 8-Lead SOIC and ADA4940-1ACP-EBZ 8-Lead SOIC evaluation boards to help designers test the features of the ADA4940 Fully Differential ADC Drivers. These are bare boards with no components soldered to the them. The bare board enables designers to customize the circuit and quickly prototype a variety of differential amplifier circuits.

Caractéristiques

  • 260MHz Small signal bandwidth
  • Extremely low harmonic distortion
  • -122dB THD at 50kHz
  • -96dB THD at 1MHz
  • 3.9nV/√Hz Low input voltage noise
  • 6.25mW (5V supply) Very low power consumption
  • 0.35mV maximum offset voltage
  • Externally adjustable gain
  • Differential-to-differential or single-to-differential operation
  • Balanced outputs
  • 34ns Settling time to 0.1%
  • 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

Related Products

Analog Devices Inc. Position Sensing Interface Solutions

Position sensors designed for closed-loop mechanical control systems across a range of industries.

Learn Moreà propos de Analog Devices Inc. Position Sensing Interface Solutions View Productslié à Analog Devices Inc. Position Sensing Interface Solutions

Functional Block Diagrams

Analog Devices Inc. Pilotes de CAN intégralement différentiels ADA4940
Publié le: 2013-04-23 | Mis à jour le: 2022-03-11