| Allicdata Part #: | 296-43203-2-ND |
| Manufacturer Part#: |
ADS1257IRGWT |
| Price: | $ 8.32 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC ADC 24BIT DELTA SIGMA 20VQFN |
| More Detail: | 24 Bit Analog to Digital Converter 2, 3 Input 1 Si... |
| DataSheet: |  ADS1257IRGWT Datasheet/PDF |
| Quantity: | 1000 |
| 250 +: | $ 7.56007 |
| 500 +: | $ 7.07231 |
Specifications
| Ratio - S/H:ADC: | -- |
| Supplier Device Package: | 20-VQFN (5x5) |
| Package / Case: | 20-VQFN Exposed Pad |
| Operating Temperature: | -40°C ~ 105°C |
| Features: | PGA |
| Voltage - Supply, Digital: | 1.8 V ~ 3.6 V |
| Voltage - Supply, Analog: | 5V |
| Reference Type: | External |
| Architecture: | Sigma-Delta |
| Number of A/D Converters: | 1 |
| Series: | -- |
| Configuration: | MUX-PGA-ADC |
| Data Interface: | SPI |
| Input Type: | Differential, Single Ended |
| Number of Inputs: | 2, 3 |
| Sampling Rate (Per Second): | 30k |
| Number of Bits: | 24 |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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Data acquisition is a process of collecting sensor data and transforming it into a digital format suitable for analysis and interpretation. Analog to Digital Converters (ADC) such as the ADS1257IRGWT are used to convert an analog input signal into a digital output. The ADS1257IRGWT offers a number of benefits, including low power consumption, an integrated oscillator, and an auto-calibration feature.
The ADS1257IRGWT Application Field
The ADS1257IRGWT is a low-power, low-cost, bi-directional, 14-bit analog-to-digital converter (ADC) suitable for data acquisition from industrial, medical, and other applications. It is specifically designed for high-speed and high-resolution applications that require precision with low noise and low distortion. Its wide range of features and flexibility make it ideal for use in portable applications such as those that require integration with a host microcontroller.The ADS1257IRGWT provides 14 bits of precision with an input voltage resolution of 0.25 mV. Its wide dynamic range allows for sampling of both low-level signals and noise-free input signals. The ADC also has a built-in oscillator for frequency-dependent applications and an auto-calibration feature. The ADC also includes a digital-to-analog converter (DAC) which is used for noise shaping, calibration, and self-calibration.ADS1257IRGWT can be used for the acquisition of physical parameters such as temperature, pressure, humidity, voltage, current, and light intensity. The ADC is also suitable for medical, communications, and automotive safety applications. For medical applications such as electrocardiogram (ECG) signal acquisition, the ADC is ideal because of its higher noise immunity and rejection of electrical interference.The ADS1257IRGWT Working Principle
The ADS1257IRGWT ADC uses a cyclic latency architecture to convert the analog input signal into a 14-bit digital output. This architecture minimizes comparator drift, reduces power consumption, and yields a faster conversion time. The ADS1257IRGWT uses two internal sample-and-hold capacitors to capture the analog signal while the active control transistors, which control the reset of the sample-and-hold capacitors to the mid-scale, are in the process of switching. This ensures that the sample-and-hold capacitor is always charged to a mid-scale voltage and eliminates the need for any external sample-and-hold circuitry.The ADC also features an adjustable conversion cycle time that can be set from 1 to 256 periods. This can be used to optimize the speed and accuracy of the conversion process. Additionally, the ADC has an adjustable dynamic range that allows it to be tuned to accommodate input signals with different noise and distortion levels.The ADS1257IRGWT also has an integral oscillator that is used to provide a reference frequency to the timing circuitry. The integrated oscillator also minimizes the need for external components, increasing the overall accuracy and reliability of the device. Finally, the ADC provides an auto-calibration feature that compensates for any errors caused by temperature fluctuations, supply voltage variations, or device aging.In summary, the ADS1257IRGWT analog-to-digital converter is a low-cost ADC suitable for data acquisition from industrial and medical applications. It offers a wide dynamic range and low noise levels, making it ideal for use in portable applications. It also features a built-in oscillator, adjustable conversion cycle time and adjustable dynamic range for improved accuracy, and an auto-calibration feature for improved reliability.
The specific data is subject to PDF, and the above content is for reference
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