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ISL26102 Folha de dados(PDF) 1 Page - Intersil Corporation |
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ISL26102 Folha de dados(HTML) 1 Page - Intersil Corporation |
1 / 21 page 1 Low-Noise 24-bit Delta Sigma ADC ISL26102, ISL26104 The ISL26102 and ISL26104 provide a low-noise programmable gain amplifier along with a 24-bit Delta-Sigma Analog-to-Digital Converter with two channel (ISL26102) or four channel (ISL26104) differential, multiplexed inputs. The devices feature exceptional noise performance for conversion rates ranging from 2.5Sps to 4kSps. The on-chip low-noise programmable-gain amplifier provides gains ranging from 1 to 128, which supports ±19.5mVFS from a 5V reference. The high input impedance allows direct connection of sensors such as load cell bridges to ensure the specified measurement accuracy without additional circuitry. The Delta-Sigma ADC features a 3rd-order modulator providing up to 21.5 bit noise-free performance (10Sps), with user-selectable word rates. The converter can be operated from an external clock source, an external crystal (typically 4.9152MHz), or the on-chip oscillator. The ISL26102 and ISL26104 offer a simple-to-use serial interface. The ISL26102 and ISL26104 are available in a Thin Shrink Small Outline Package (TSSOP). The devices are specified for operation over the automotive temperature range (-40°C to +105°C). Features • Programmable gain amplifier with gains of 1 to 128 •Low noise: 7nV/√Hz @ PGA = 128 • Linearity error: 0.0002% FS • Output word rates up to 4kSps • Low-side switch for load cell power management • +5V analog and +2.7V to +5V digital supplies • ISL26102 in 24 Ld TSSOP • ISL26104 in 28 Ld TSSOP •ESD 7.5kV - HBM Applications •Weigh scales • Temperature monitors and controls • Load safety systems • Industrial process control • Pressure sensors Related Literature AN1704, “Precision Signal Path Data Acquisition System” ΔΣ ADC PGA 1, 2, 4, 8,16, 32, 64, 128 INTERNAL CLOCK SDO/RDY SCLK DVDD AVDD DGND DGND XTALIN/ CLOCK VREF+ EXTERNAL OSCILLATOR XTALOUT VREF- AIN1+ AIN1- AIN2+ AIN2- AIN3+ AIN3- AIN4+ AIN4- INPUT MULTIPLEXER ISL26104 ONLY CAP CAP SDI DGND DGND CS LSPS AGND DVDD PWDN ON-CHIP TEMP SENSOR FIGURE 1. BLOCK DIAGRAM October 12, 2012 FN7608.0 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2012. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
Nº de peça semelhante - ISL26102 |
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Descrição semelhante - ISL26102 |
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