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LTC2400 Dataheets PDF



Part Number LTC2400
Manufacturers Linear Technology
Logo Linear Technology
Description 24-Bit uPower No Latency ADC
Datasheet LTC2400 DatasheetLTC2400 Datasheet (PDF)

LTC2400 24-Bit µPower No Latency ∆Σ ADC in SO-8 TM FEATURES s s s s DESCRIPTIO s s s s s s s s 24-Bit ADC in SO-8 Package 4ppm INL, No Missing Codes 4ppm Full-Scale Error Single Conversion Settling Time for Multiplexed Applications 0.5ppm Offset 0.3ppm Noise Internal Oscillator—No External Components Required 110dB Min, 50Hz/60Hz Notch Filter Reference Input Voltage: 0.1V to VCC Live Zero—Extended Input Range Accommodates 12.5% Overrange and Underrange Single Supply 2.7V to 5.5V Operation .

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LTC2400 24-Bit µPower No Latency ∆Σ ADC in SO-8 TM FEATURES s s s s DESCRIPTIO s s s s s s s s 24-Bit ADC in SO-8 Package 4ppm INL, No Missing Codes 4ppm Full-Scale Error Single Conversion Settling Time for Multiplexed Applications 0.5ppm Offset 0.3ppm Noise Internal Oscillator—No External Components Required 110dB Min, 50Hz/60Hz Notch Filter Reference Input Voltage: 0.1V to VCC Live Zero—Extended Input Range Accommodates 12.5% Overrange and Underrange Single Supply 2.7V to 5.5V Operation Low Supply Current (200µA) and Auto Shutdown The LTC®2400 is a 2.7V to 5.5V micropower 24-bit converter with an integrated oscillator, 4ppm INL and 0.3ppm RMS noise. It uses delta-sigma technology and provides single cycle settling time for multiplexed applications. Through a single pin the LTC2400 can be configured for better than 110dB rejection at 50Hz or 60Hz ± 2%, or it 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. The converter accepts any external reference voltage from 0.1V to VCC. With its extended input conversion range of –12.5% VREF to 112.5% VREF, the LTC2400 smoothly resolves the offset and overrange problems of preceding sensors or signal conditioning circuits. The LTC2400 communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRETM protocols. , LTC and LT are registered trademarks of Linear Technology Corporation. No Latency ∆Σ is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. U APPLICATIO S s s s s s s s s Weight Scales Direct Temperature Measurement Gas Analyzers Strain-Gage Transducers Instrumentation Data Acquisition Industrial Process Control 6-Digit DVMs TYPICAL APPLICATIO 2.7V TO 5.5V 1µF VCC LTC2400 REFERENCE VOLTAGE 0.1V TO VCC ANALOG INPUT RANGE –0.12VREF TO 1.12VREF VREF SCK FO Total Unadjusted Error vs Output Code 10 VCC 8 LINEARITY ERROR (ppm) = INTERNAL OSC/50Hz REJECTION = EXTERNAL CLOCK SOURCE = INTERNAL OSC/60Hz REJECTION 6 4 2 0 –2 –4 –6 –8 VIN GND SDO CS 3-WIRE SPI INTERFACE 2400 TA01 –10 0 8,338,608 OUTPUT CODE (DECIMAL) 16,777,215 2400 TA02 U VCC = 5V VREF = 5V TA = 25°C FO = LOW U 1 LTC2400 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) U W U PACKAGE/ORDER INFORMATION TOP VIEW VCC 1 VREF 2 VIN 3 GND 4 8 7 6 5 FO SCK SDO CS Supply Voltage (VCC) to GND .......................– 0.3V to 7V Analog Input Voltage to GND ....... – 0.3V to (VCC + 0.3V) Reference Input Voltage to GND .. – 0.3V to (VCC + 0.3V) Digital Input Voltage to GND ........ – 0.3V to (VCC + 0.3V) Digital Output Voltage to GND ..... – 0.3V to (VCC + 0.3V) Operating Temperature Range LTC2400C ............................................... 0°C to 70°C LTC2400I ............................................ – 40°C to 85°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 se.


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