The LTC2401/LTC2402IMS#TRPBF are 1- and 2-channel 2.7V to 5.5V micropower 24-bit analog-to-digital converters with an integrated oscillator, 4ppm INL and 0.6ppm RMS noise. These ultrasmall devices use delta-sigma technology and a new digital filter architecture that settles in a single cycle. This eliminates the latency found in conventional ΔΣ converters and simplifies multiplexed applications.
Through a single pin, the LTC2401/LTC2402IMS#TRPBF can be configured for better than 110dB rejection at 50Hz or 60Hz ±2%, or can be driven by an external oscillator for a user defined rejection frequency in the range 1Hz to 120Hz. The internal oscillator requires no external frequency setting components.
These converters accept an external reference voltage from 0.1V to VCC. With an extended input conversion range of –12.5% VREF to 112.5% VREF (VREF = FSSET – ZSSET), the LTC2401/LTC2402IMS#TRPBF smoothly resolve the offset and overrange problems of preceding sensors or signal conditioning circuits.
The LTC2401/LTC2402IMS#TRPBF communicate through a 2- or 3-wire digital interface that is compatible with SPI and MICROWIRE™ protocols.
Feature
24-Bit ADCs in Tiny MSOP-10 Packages
4ppm INL, No Missing Codes
4ppm Full-Scale Error
0.5ppm Offset
0.6ppm Noise
Single Conversion Settling Time for Multiplexed Applications
1- or 2-Channel Inputs
Automatic Channel Selection (Ping-Pong) (LTC2402)
Zero Scale and Full Scale Set for Reference and Ground Sensing
Internal Oscillator—No External Components Required
110dB Min, 50Hz/60Hz Notch Filter
Reference Input Voltage: 0.1V to VCC
Live Zero—Extended Input Range Accommodates12.5% Overrange and Underrange
Single Supply 2.7V to 5.5V Operation
Low Supply Current (200µA) and Auto Shutdown
Applications
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
