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Product Detailed Parameters
- Description：IC ADC 20VQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Number of Bits：-
- Sampling Rate (Per Second)：-
- Number of Inputs：-
- Input Type：-
- Data Interface：-
- Configuration：-
- Ratio - S/H:ADC：-
- Number of A/D Converters：-
- Architecture：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- Features：-
- Operating Temperature：-
- Package / Case：20-VQFN Exposed Pad
- Supplier Device Package：20-VQFN (5x5)
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
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Overview
The ADS1257IRGWR is a four-channel, 24-bit analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture to achieve a sampling rate of 30 kSPS. The device supports both differential and single-ended input configurations. It operates with an analog supply voltage of 5 V and a digital supply range of 1.8 V to 3.6 V. The component features an SPI interface for communication and includes a programmable gain amplifier (PGA). It is housed in a VQFN-20 package and is designed for operation within a temperature range of -40°C to +85°C.
Feature Summary
- Integrated programmable gain amplifier for signal conditioning
- Built-in rejection of 50 Hz and 60 Hz power line interference
- General-purpose input/output pins for system flexibility
Applications
- Industrial process control systems
- Weight scales and force measurement
- Medical instrumentation
Procurement Notes
Verify the specific suffix 'R' indicates tape-and-reel packaging when sourcing. Confirm the operating temperature grade matches the application requirements. Ensure the external reference voltage capability aligns with the system design. Check for moisture sensitivity level compliance during storage and handling procedures.
Selection Notes
Select this component when high-resolution multi-channel acquisition is required. The integrated PGA reduces the need for external amplification. Consider the 5 V analog supply requirement for compatibility with existing sensor interfaces. Evaluate the SPI interface speed against the microcontroller capabilities.
Part Context
This part belongs to the ADS1257 family of precision ADCs. It shares architectural similarities with other devices in the series but offers four distinct channels. The IRGWR designation specifies the industrial temperature range and reel packaging format. It serves as a direct replacement for previous iterations requiring similar performance metrics.
