LTC2348-18 Datasheet | Linear Technology

Features LTC2348-18 Octal, 18-Bit, 200ksps Differential ±10.24V Input Soft Span ADC with Wide Input mon Mode Range Description nn 200ksps per Channel Throughput nn Eight Simultaneous Sampling Channels nn ±3LSB INL (Maximum, ±10.24V Range) nn Guaranteed 18-Bit, No Missing Codes nn Differential, Wide mon Mode Range Inputs nn Per-Channel Soft Span Input Ranges: ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V nn 96.7d B Single-Conversion SNR (Typical) nn - 109d B THD (Typical) at f IN = 2k Hz nn 118d B CMRR (Typical) at f IN = 200Hz nn Rail-to-Rail Input Overdrive Tolerance nn Guaranteed Operation to 125°C nn Integrated Reference and Buffer (4.096V) nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O nn Internal Conversion Clock, No Cycle Latency nn 140m W Power Dissipation (Typical) nn 48-Lead (7mm x 7mm) LQFP Package Applications nn Programmable Logic Controllers nn Industrial Process Control nn Power Line Monitoring nn Test and Measurement The LTC®2348-18 is an 18-bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide mon mode range inputs. Operating from a 5V low voltage supply, flexible high voltage supplies, and using the internal reference and buffer, each channel of this Soft Span TM ADC can be independently configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals. Individual channels may also be disabled to increase throughput on the remaining channels. The wide input mon mode range and 118d B CMRR of the LTC2348-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, bined with ±3LSB INL, no missing codes at 18 bits, and 96.7d B SNR, makes the LTC2348-18 an ideal choice for many high voltage applications requiring wide dynamic range. The LTC2348-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Between...