Analog Devices Inc. Precision Analog-to-Digital Converters (ADC) are 16- and 18-bit, low noise 2-, 4- and 8-channel simultaneous sampling successive approximation register (SAR) ADCs. The devices feature buffered differential, and wide common mode range picoamp inputs. The ADCs operate from a 5V low voltage supply, flexible high voltage supplies, and use the internal reference and buffer. Each channel of this SoftSpan™ 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.
Feature
- Simultaneous Sampling of 2 Buffered Channels
- 550ksps per Channel Throughput
- 500pA/12nA Max Input Leakage at 85°C/125°C
- ±1LSB INL (Maximum, ±10.24V Range)
- Guaranteed 16-Bit, No Missing Codes
- Differential, Wide Common Mode Range Inputs
- 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
- 94.2dB Single-Conversion SNR (Typical)
- −110dB THD (Typical) at fIN = 2kHz
- 124dB CMRR (Typical) at fIN = 200Hz
- Rail-to-Rail Input Overdrive Tolerance
- Integrated Reference and Buffer (4.096V)
- SPI CMOS (1.8V to 5V) and LVDS Serial I/O
- Internal Conversion Clock, No Cycle Latency
- 162mW Power Dissipation (Typical)
- 48-Lead (7mm × 7mm) LQFP Package
Applications
- Programmable Logic Controllers
- Industrial Process Control
- Power Line Monitoring
- Test and Measurement
