Distributor | SKU | Stock | Cost | |
---|---|---|---|---|
DigiKey | ADA4940-2ACPZ-R2CT-ND | 0 | $9.84 | Buy |
Mouser Electronics | 584-ADA4940-2ACPZ-R2 | 2483 | $11.58 | Buy |
Farnell | ADA4940-2ACPZ-R2 | 2162 | * $11.63 | Buy |
element14 APAC | ADA4940-2ACPZ-R2 | 2162 | * $12.18 | Buy |
Win Source | ADA4940-2ACPZ-R2 | 1000 | Buy | |
Newark | ADA4940-2ACPZ-R2 | 1970 | $12.39 | Buy |
Analog Devices Inc | ADA4940-2ACPZ-R2 | 750 | $12.21 | Buy |
Arrow North American Components | ADA4940-2ACPZ-R2 | 0 | $4.85 | Buy |
The ADA4940-1 / ADA4940-2 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. The adjustable level of the output common-mode voltage allows the ADA4940-1 / ADA4940-2 to match the input common-mode voltage of multiple ADCs. The internal common-mode feedback loop provides exceptional output balance, as well as suppression of even-order harmonic distortion products.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.The ADA4940-1 is available in a Pb-free, 3 mm × 3 mm, 16-lead LFCSP. The ADA4940-2 is available in a Pb-free, 4 mm × 4 mm, 24-lead LFCSP. The pinout is optimized to facilitate printed circuit board (PCB) layout and minimize distortion. The ADA4940-1 / ADA4940-2 are specified to operate over the −40°C to +125°C temperature range. Applications Low power ADC drivers Single-ended-to-differential converters Differential buffers Line drivers Medical Imaging Industrial Process Control Portable Electronics