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LTC2401

Linear Technology
Part Number LTC2401
Manufacturer Linear Technology
Description 1-/2-Channel 24-Bit uPower No Latency ADC
Published Mar 27, 2005
Detailed Description U U LTC2401/LTC2402 1-/2-Channel 24-Bit µPower No Latency ∆ΣTMADCs in MSOP-10 FEATURES DESCRIPTIO s 24-Bit ADCs in T...
Datasheet PDF File LTC2401 PDF File

LTC2401
LTC2401

Overview
U U LTC2401/LTC2402 1-/2-Channel 24-Bit µPower No Latency ∆ΣTMADCs in MSOP-10 FEATURES DESCRIPTIO s 24-Bit ADCs in Tiny MSOP-10 Packages s 4ppm INL, No Missing Codes s 4ppm Full-Scale Error s 0.
5ppm Offset s 0.
6ppm Noise s Single Conversion Settling Time for Multiplexed Applications s 1- or 2-Channel Inputs s Automatic Channel Selection (Ping-Pong) (LTC2402) s Zero Scale and Full Scale Set for Reference and Ground Sensing s Internal Oscillator—No External Components Required s 110dB Min, 50Hz/60Hz Notch Filter s Reference Input Voltage: 0.
1V to VCC s Live Zero—Extended Input Range Accommodates 12.
5% Overrange and Underrange s Single Supply 2.
7V to 5.
5V Operation s Low Supply Current (200µA) and Auto Shutdown U APPLICATIO S s Weight Scales s Direct Temperature Measurement s Gas Analyzers s Strain Gauge Transducers s Instrumentation s Data Acquisition s Industrial Process Control The LTC®2401/LTC2402 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 ∆Σ converters and simplifies multiplexed applications.
Through a single pin, the LTC2401/LTC2402 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/LTC2402 smoothly resolve the offset and overrange problems of preceding sensors or signal conditioning circuits.
The LTC2401/LTC2402 communicate through a 2- or 3-wire digital interface that is compatible with SPI and MICROWIRETM protocol...


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