DC845A

DC845A is a QuikEval™ family of demonstration board designed to allow easy evaluation of the LTC2448. The LTC®2448 is an 8-/16-channel, high speed, 24-bit Δ∑ ADC with ten selectable speed/resolution modes from 6.9Hz/280nVRMS to 3.5KHz/25μVRMS. Key DC specifications include 5ppm INL, 5μV offset, 10ppm full-scale error and 20nV/°C offset drift. In the 6.9Hz/280nVRMS mode, an input normal mode rejection of 50Hz and 60Hz noise is better than a 87dB. The accuracy (offset, full-scale, linearity, drift) and power dissipation are independent of the speed selected. It is easy evaluation of the LTC2448 and may be connected directly to the target application’s analogue signals while using the DC590 USB serial controller board and supplied software to measure performance. The exposed ground planes allow proper grounding to prototype circuitry. After evaluating with LTC’s software, the digital signals can be connected to the application’s processor/controller for development of serial interface.

• DC845A connected to a DC590 USB serial controller using the supplied 14-conductor ribbon cable