Power Electronics
 Fast 16-bit 5Msps Dual SAR ADC

Fast 16-bit 5Msps Dual SAR ADC

The LTC2323-16 from Linear Technology Corp. is a dual 16-bit, 5Msps successive approximation register (SAR) ADC with flexible differential inputs. The LTC2323-16 supports a wide input common mode range and simplifies system-level design by relaxing the signal conditioning requirements to drive the ADC with a wide range of analog signals up to Nyquist frequencies.

The LTC2323-16 leads a family of 16-, 14- and 12-bit SAR ADCs, featuring sample rates of 5 Msps and 2 Msps while achieving 81 dB SNR at 16 bits, 80 dB SNR at 14 bits and 73 dB SNR at 12 bits. The 14- and 12-bit versions feature sign plus magnitude transfer functions, making them ideally suited for control loop applications. The LTC2323 family integrates a precision bandgap reference with low drift and guaranteed 20ppm/°C maximum temperature coefficient into a small 20 mm² QFN-28 package. The devices can be powered from a 3.3 V or 5 V supply and consume just 55 mW with a 3.3 V supply and 80 mW with a 5 V supply. The high speed SPI-compatible CMOS or LVDS serial interface is ideal for highly integrated high speed systems.

The LTC2323-16 is available today in commercial, industrial and automotive (-40 °C to 125 °C) temperature grades. Pricing begins at $13.95 each in 1,000-piece quantities. The DC1996A evaluation board for the LTC2323 SAR ADC family is available.

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