MAXIM Integrated Products, represented in Australia by Arrow Electronics , has released the MAX1215, a 12-bit 250Msps analogue-to-digital converter (ADC). It is suitable for designers who need to implement higher order power-amplifier predistortion, because the 250Msps update rate allows them to sample wider bandwidths with greater dynamic range than could have been sampled before.
It achieves a spurious-free dynamic range (SFDR) of 74dBc and has a signal-to-noise ratio (SNR) of 66dB at 10MHz, which remains flat (within 2dB) for input tones up to 300MHz. This makes the device suitable for wideband applications like cable-head end receivers and power-amplifier predistortion in cellular base stations.
This high-speed, 12-bit ADC runs on a single 1.8V supply. The analog input is designed for either differential or single-ended operation and can be ac or dc coupled. The selectable on-chip, divide-by-two clock circuit reduces the phase noise of the input clock source. The digital outputs are LVDS-compatible and the data format can be selected as either two's complement or offset binary.
It is available in a space-saving, 68-pin TQFN-EP package specified for the industrial temperature range (-40°C to +85°C).