Dual, 14-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range

The LTC2321-14 is a low noise, high speed dual 14-bit + sign successive approximation register (SAR) ADC with differential inputs and wide input common mode range. Operating from a single 3.3V or 5V supply, the LTC2321-14 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2321-14 achieves ±1LSB INL typical, no missing codes at 14 bits and 80dB SNR.

The LTC2321-14 has an on-board low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference. The LTC2321-14 also has a high speed SPI-compatible serial interface that supports CMOS or LVDS. The fast 2Msps per channel throughput with no-cycle latency makes the LTC2321-14 ideally suited for a wide variety of high speed applications. The LTC2321-14 dissipates only 33mW per channel and offers nap and sleep modes to reduce the power consumption to 5μW for further power savings during inactive periods.

Bits

LTC2321-12

12

LTC2321-14

14

LTC2321-16

16

Applications

* High Speed Data Acquisition Systems

* Communications

* Remote Data Acquisition

* Imaging

* Optical Networking

* Automotive

* Multiphase Motor Control

* 2Msps Throughput Rate

* ±1LSB INL (Typ)

* Guaranteed 14-Bit, No Missing Codes

* 8VP-P Differential Inputs with Wide Input Common Mode Range

* 80dB SNR (Typ) at fIN = 500kHz

* –90dB THD (Typ) at fIN = 500kHz

* No-Cycle Latency