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LTNS Datasheet(PDF) 1 Page - Linear Technology |
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LTNS Datasheet(HTML) 1 Page - Linear Technology |
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1 / 40 page  LTC2411/LTC2411-1 1 The LTC ®2411/LTC2411-1 are 2.7V to 5.5V micropower 24-bit differential ∆Σ analog-to-digital converters with an integrated oscillator, 2ppm INL and 0.29ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2411 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, and the LTC2411-1 can provide better than 87dB input differential mode rejection over the range of 49Hz to 61.2Hz, or they can be driven by an external oscillator for a user-defined rejection frequency. The LTC2411 and LTC2411-1 are identical when driven by an external oscillator. The internal oscillator 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 the GND to VCC range of the LTC2411/LTC2411-1. The DC common mode input rejec- tion is better than 140dB. The LTC2411/LTC2411-1 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 6-Digit DVMs , LTC and LT are registered trademarks of Linear Technology Corporation. s 24-Bit ADC in an MS10 Package 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 2ppm INL, No Missing Codes s 4ppm Full-Scale Error and 1ppm Offset s 0.29ppm Noise 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, Pin Selectable 50Hz/60Hz Notch Filter (LTC2411) s Simultaneous 50Hz/60Hz Rejection (LTC2411-1) 24-Bit No Latency ∆ΣTM ADC with Differential Input and Reference in MSOP No Latency ∆Σ is a trademark of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corporation. DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO VCC FO REF+ REF– SCK IN+ IN– SDO GND CS 110 2 3 9 4 5 8 6 7 REFERENCE VOLTAGE 0.1V TO VCC ANALOG INPUT RANGE –0.5VREF TO 0.5VREF = INTERNAL OSC/50Hz REJECTION (LTC2411) = EXTERNAL CLOCK SOURCE = INTERNAL OSC/60Hz REJECTION (LTC2411) = SIMULTANEOUS 50Hz/60Hz REJECTION (LTC2411-1) 3-WIRE SPI INTERFACE 1 µF 2.7V TO 5.5V LTC2411/ LTC2411-1 2411 TA01 VCC LTC2411/ LTC2411-1 IN+ REF+ VCC REF – VCC GND FO IN– 1 µF SCK 3-WIRE SPI INTERFACE SDO 2411 TA02 CS 9 2 1 610 4 5 3 8 7 BRIDGE IMPEDANCE 100 Ω TO 10kΩ |
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