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LTC2430IGN データシート(PDF) 1 Page - Linear Technology |
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LTC2430IGN データシート(HTML) 1 Page - Linear Technology |
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1 / 40 page  LTC2430/LTC2431 1 24301f The LTC ®2430/LTC2431 are 2.7V to 5.5V micropower 20-bit differential ∆Σ analog-to-digital converters with an integrated oscillator, 3ppm INL and 0.56ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2430/LTC2431 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, or they can be driven by an external oscillator for a user-defined rejection frequency. The internal oscil- lator requires no external frequency setting components. The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The full- scale differential input range is from – 0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be indepen- dently set anywhere within GND to VCC. The DC common mode input rejection is better than 120dB. The LTC2430/LTC2431 communicate through a flexible 3-wire digital interface that is compatible with SPI and MICROWIRE TM protocols. s Direct Sensor Digitizer s Weight Scales s Direct Temperature Measurement s Gas Analyzers s Strain Gauge Transducers s Instrumentation s Data Acquisition s Industrial Process Control s DVMs and Meters , LTC and LT are registered trademarks of Linear Technology Corporation. s Low Supply Current (200 µA in Conversion Mode and 4 µA in Autosleep Mode) s Differential Input and Differential Reference with GND to VCC Common Mode Range s 3ppm INL, No Missing Codes s 10ppm Full-Scale Error and 1ppm Offset s 0.56ppm Noise, 20.8 ENOBs s No Latency: Digital Filter Settles in a Single Cycle. Each Conversion Is Accurate, Even After an Input Step s Single Supply 2.7V to 5.5V Operation s Internal Oscillator—No External Components Required s 110dB Min, 50Hz/60Hz Notch Filter s Pin Compatible with 24-Bit LTC2410/LTC2411 20-Bit No Latency ∆ΣTM ADCs with Differential Input and Differential Reference No Latency ∆Σ is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. VCC FO 64 12 REF+ REF– SCK IN+ IN– SDO GND CS ANALOG INPUT RANGE –0.5VREF TO 0.5VREF 3-WIRE SPI INTERFACE 0.1 µF 0.1 µF LTC2431 24301 TA01 4.7 µF = INTERNAL OSC/50Hz REJECTION = EXTERNAL CLOCK SOURCE = INTERNAL OSC/60Hz REJECTION VCC LT1790 (VOUT + 0.25V) TO 20V VOUT 3V TO 5V DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO S INPUT VOLTAGE (V) –2.5 1 3 5 1.5 24301 G01 –1 –3 0 2 4 –2 –4 –5 –1.5 –2 –0.5 –1 0.5 1 2 0 2.5 VCC = 5V VREF = 5V VINCM = VINCM = 2.5V FO = GND 85 °C 25 °C –45 °C Total Unadjusted Error (VCC = 5V, VREF = 5V) |
同様の部品番号 - LTC2430IGN |
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同様の説明 - LTC2430IGN |
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