LTC2413 24-Bit No Latency ∆Σ™ ADC, with Simultaneous 50Hz/60Hz Rejection FeaTuresDescripTion n Simultaneous 50Hz/60Hz Rejection The LTC®2413 is a 2.7V to 5.5V simultaneous 50Hz/60Hz (87dB Minimum) rejection micropower 24-bit differential ∆Σ analog to n Differential Input and Differential Reference with digital converter with an integrated oscillator, 2ppm INL GND to VCC Common Mode Range and 0.16ppm RMS noise. It uses delta-sigma technology n 2ppm INL and No Missing Codes at 24 Bits and provides single cycle settling time for multiplexed n 0.1ppm Offset and 2.5ppm Full-Scale Error applications. Through a single pin, the LTC2413 can be n 0.16ppm Noise configured for better than 87dB input differential mode n No Latency: Digital Filter Settles in a Single Cycle rejection over the range of 49Hz to 61.2Hz (50Hz and n Internal Oscillator—No External Components 60Hz ±2% simultaneously), or it can be driven by an Required external oscillator for a user defined rejection frequency. n 24-Bit ADC in Narrow SSOP-16 Package The internal oscillator requires no external frequency (SO-8 Footprint) setting components. n Single Supply 2.7V to 5.5V Operation The converter accepts any external differential reference n Low Supply Current (200µA) and Auto Shutdown voltage from 0.1V to VCC for flexible ratiometric and re- n Pin Compatible with LTC2410 mote sensing measurement configurations. The full-scale differential input range is from –0.5VREF to 0.5VREF. The applicaTions reference common mode voltage, VREFCM, and the input n Direct Sensor Digitizer common mode voltage, VINCM, may be independently set n Weight Scales anywhere within the GND to VCC range of the LTC2413. The n Direct Temperature Measurement DC common mode input rejection is better than 140dB. n Gas Analyzers The LTC2413 communicates through a flexible 3-wire n Strain-Gauge Transducers digital interface which is compatible with SPI and n Instrumentation MICROWIRE protocols. n Data Acquisition L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No n Industrial Process Control Latency ∆∑ is a trademark of Linear Technology Corporation. All other trademarks are the n 6-Digit DVMs property of their respective owners. n Products for International Markets Typical applicaTionMeasured Noise Rejection from 48Hz to 62.5Hz –80 2.7V TO 5.5V MEASURED DATA 1µF –85 CALCULATED DATA 2 14 = EXTERNAL CLOCK SOURCE V V CC FO CC = 5V = INTERNAL OSC/ –90 REF+ = 5V SIMULTANEOUS 50Hz/60Hz REJECTION REF– = GND LTC2413 –95 V 3 INCM = 2.5V REFERENCE REF+ 13 –100 V SCK IN(P-P) = 5V VOLTAGE 4 TA = 25°C 0.1V TO V REF– CC –105 3-WIRE 5 12 ANALOG INPUT RANGE IN+ SDO SPI INTERFACE –110 –0.5VREF TO 0.5VREF 6 IN– 11 NORMAL MODE REECTION (dB) CS 1, 7, 8, 9, 10, 15, 16 –115 GND 2413 TA01 –120 48 50 52 54 56 58 60 62 INPUT FREQUENCY (Hz) 2413 TA02 2413fa For more information www.linear.com/LTC2413 1
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