Analog Devices débuted a family of rail-to-rail amplifiers for high-speed data acquisition systems that require accuracy, precision and power efficiency.
For system designers who are looking to achieve full datasheet specifications from high-resolution A/D converters, the ADA4805-1 (single) and ADA4805-2 (dual) amplifiers provide quiescent current as low as 495 μA.
The devices’ dynamic power scaling (DPS) feature allows users to dynamically manage power consumption by shutting down the amplifier between analog-to-digital converter samples. This reduces by up to 90% the power consumption – with no performance degradation – when compared to similar solutions.
The 100 MHz amplifiers achieve a high slew rate of 160 V/s, low noise (5,9 nV/Hz at 100 kHz) and low distortion (102 dBc/116 dBc HD2/HD3 at 100 kHz) while consuming only 1,5 mW of power. They are designed for power-sensitive portable and battery-powered data acquisition devices, such as handheld or portable test and measurement instruments, battery-powered industrial equipment and remote environmental monitoring devices. They can also be used to reduce power and thermal dissipation in high-density applications such as cellular base stations and medical imaging equipment.
The ADA4805 family has very low offset-voltage drift of 1,5 μV/°C maximum (0,2 V / °C typical), a wide voltage range supporting 3 V supplies, and in applications that require a wider dynamic range can also operate on supplies as high as ±5 V.
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