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LTC2414IGN データシート(PDF) 1 Page - Linear Technology |
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LTC2414IGN データシート(HTML) 1 Page - Linear Technology |
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1 / 48 page  LTC2414/LTC2418 1 241418fa APPLICATIO S FEATURES DESCRIPTIO TYPICAL APPLICATIO The LTC ®2414/LTC2418 are 8-/16-channel (4-/8-differ- ential) micropower 24-bit ∆Σ analog-to-digital convert- ers. They operate from 2.7V to 5.5V and include an integrated oscillator, 2ppm INL and 0.2ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2414/LTC2418 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 LTC2414/LTC2418 accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement applications. They can be configured to take 4/8 differential channels or 8/16 single-ended channels. The full-scale bipolar input range is from – 0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode volt- age, VINCM, may be independently set within GND to VCC. The DC common mode input rejection is better than 140dB. The LTC2414/LTC2418 communicate through a flexible 4-wire digital interface that is compatible with SPI and MICROWIRE TM protocols. ■ Direct Sensor Digitizer ■ Weight Scales ■ Direct Temperature Measurement ■ Gas Analyzers ■ Strain Gauge Transducers ■ Instrumentation ■ Data Acquisition ■ Industrial Process Control , LTC and LT are registered trademarks of Linear Technology Corporation. ■ 8-/16-Channel Single-Ended or 4-/8-Channel Differential Inputs (LTC2414/LTC2418) ■ Low Supply Current (200 µA, 4µA in Autosleep) ■ Differential Input and Differential Reference with GND to VCC Common Mode Range ■ 2ppm INL, No Missing Codes ■ 2.5ppm Full-Scale Error and 0.5ppm Offset ■ 0.2ppm Noise ■ No Latency: Digital Filter Settles in a Single Cycle Each Conversion Is Accurate, Even After a New Channel is Selected ■ Single Supply 2.7V to 5.5V Operation ■ Internal Oscillator—No External Components Required ■ 110dB Min, 50Hz/60Hz Notch Filter 8-/16-Channel 24-Bit No Latency ∆ΣTM ADCs No Latency ∆Σ is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Total Unadjusted Error vs Input Voltage SDI SCK SDO CS FO REF+ VCC 9 11 2.7V TO 5.5V 20 18 17 16 19 1 µF COM REF – GND 10 THERMOCOUPLE 12 15 DIFFERENTIAL 24-BIT ∆Σ ADC 16-CHANNEL MUX + – 241418 TA01a 4-WIRE SPI INTERFACE LTC2418 = 50Hz REJECTION = EXTERNAL OSCILLATOR = 60Hz REJECTION VCC CH0 CH1 • • • • • • 21 22 CH7 CH8 28 1 CH15 8 INPUT VOLTAGE (V) –2.5 –2 –1 0 1.0 2.0 3 2 1 0 –1 –2 –3 –1.5 –0.5 0.5 1.5 2414/18 TA01b 2.5 VCC = 5V VREF = 5V VINCM = VREFCM = 2.5V FO = GND TA = 85°C TA = 25°C TA = –45°C |
同様の部品番号 - LTC2414IGN |
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同様の説明 - LTC2414IGN |
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