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ADS1258IRTCR

ADS1258IRTCR

Manufacturer Part:ADS1258IRTCR
Part Type:Audio ICs
Manufacturer:TI
Part ID:ADS1258IRTCR
Date Code:
Quantity Available:16595
Last Updated:2024/11/26

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Description

Features

Applications

ADS1258IRTCR Description

      The IN74AC14 is identical in pinout to the LS/ALS14, HC/HCT14. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs.   The IN74AC14 is useful to square up slow input rise and fall times. Due to the hysteresis voltage of the Schmitt trigger, the IN74AC14 finds applications in noisy environments. • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.0 to 6.0 V • Low Input Current: 1.0 µA; 0.1 µA @ 25C • High Noise Immunity Characteristic of CMOS Devices • Outputs Source/Sink 24 mA

ADS1258IRTCR Features

      Figure 3 illustrates a typical power supply filter scheme. The ADS1258IRTCR is most susceptible to noise with spectral content in the 1KHz to 1MHz range. Therefore the filter should be designed to target this range. The key parameter that needs to be met in the final filter design is the DC voltage drop that will be seen between the VCC supply and the VCCA pin of the ADS1258IRTCR. From the data sheet the IVCCA current (the current sourced through the VCCA pin) is typically 15mA (20mA maximum), assuming that a minimum of 3.0V must be maintained on the VCCA pin very little DC voltage drop can be tolerated when a 3.3V VCC supply is used. The resistor shown in Figure 3 must have a resistance of 10C15Ω to meet the voltage drop criteria. The RC filter pictured will provide a broadband filter with approximately 100:1 attenuation for noise whose spectral content is above 20KHz. As the noise frequency crosses the series resonant point of an individual capacitor its overall impedance begins to look inductive and thus increases with increasing frequency. The parallel capacitor combination shown ensures that a low impedance path to ground exists for frequencies well above the bandwidth of the PLL. It is recommended that the user start with an 8C10Ω resistor to avoid potential VCC drop problems and only move to the higher value resistors when a higher level of attenuation is shown to be needed.

ADS1258IRTCR Applicatioins

    Technical/Catalog InformationADS1258IRTCRVendorTexas InstrumentsCategoryIntegrated Circuits (ICs) Number of Bits
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