Overview
The ADS1672IPAGR from Texas Instruments is a high-speed, high-precision analog-to-digital converter (ADC) utilizing an advanced delta-sigma (ΔΣ) architecture. This 24-bit ADC operates at speeds up to 625 kilosamples per second (kSPS) and is renowned for its outstanding AC and DC performance. The device is designed to provide high-resolution measurements of both AC and DC signals, making it suitable for a variety of precision applications. It features a dual-path programmable digital filter, allowing users to select between low-latency and wide-bandwidth filters to optimize performance for their specific needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 bits | |
| Sampling Rate | Up to 625 kSPS | |
| Dynamic Range | 107 dB at 625 kSPS, 115.5 dB at 78 kSPS | dB |
| Total Harmonic Distortion (THD) | -113 dB | dB |
| Integral Nonlinearity (INL) | 3 ppm | ppm |
| Offset Drift | 2 µV/°C | µV/°C |
| Gain Drift | 2 ppm/°C | ppm/°C |
| Filter Types | Low-Latency, Wide-Bandwidth | |
| Low-Latency Filter Settling Time | 5.5 µs | µs |
| Wide-Bandwidth Filter Bandwidth | 305 kHz | kHz |
| Supply Voltages | Analog: +5V, Digital: +3V | V |
| Power Consumption | 350 mW | mW |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | TQFP-64 |
Key Features
- Dual-Path Programmable Digital Filter: Allows selection between low-latency and wide-bandwidth filters to optimize for different applications.
- Flexible Serial Interface: Supports both standard CMOS and serialized LVDS logic levels, enabling direct connection to microcontrollers, DSPs, or FPGAs.
- Easy Conversion Control: A dedicated START pin for direct control of conversions, eliminating the need for register programming.
- Out-of-Range Detection: Provides an indicator for out-of-range conditions, enhancing data reliability.
- Power Management: Includes a PDWN pin to power down the device when not in use, reducing power consumption.
Applications
- Automated Test Equipment: Ideal for high-precision measurements in automated testing environments.
- Vibration Analysis: Suitable for vibration monitoring and analysis due to its high AC performance and wide bandwidth.
- Sonar: Used in sonar applications requiring continuous measurements with low passband ripple and high bandwidth.
- Test and Measurement: Applicable in various test and measurement scenarios where high resolution and precision are crucial.
Q & A
- What is the resolution and sampling rate of the ADS1672IPAGR?
The ADS1672IPAGR has a resolution of 24 bits and can sample at rates up to 625 kSPS.
- What are the key features of the dual-path digital filter in the ADS1672IPAGR?
The dual-path digital filter allows users to select between a low-latency filter that settles in 5.5 µs and a wide-bandwidth filter with a 305 kHz bandwidth and low passband ripple.
- How does the ADS1672IPAGR manage power consumption?
The device operates from an analog supply of +5V and a digital supply of +3V, consuming 350 mW of power. It also features a PDWN pin to power down the device when not in use.
- What types of serial interfaces does the ADS1672IPAGR support?
The ADS1672IPAGR supports both standard CMOS and serialized LVDS logic levels for data readback.
- How is conversion control managed in the ADS1672IPAGR?
A dedicated START pin allows for direct control of conversions, eliminating the need for register programming.
- What is the operating temperature range of the ADS1672IPAGR?
The device is fully specified over the industrial temperature range of -40°C to 85°C.
- What package type is the ADS1672IPAGR available in?
The ADS1672IPAGR is offered in a TQFP-64 package).
- What are some common applications of the ADS1672IPAGR?
Common applications include automated test equipment, vibration analysis, sonar, and test and measurement).
- How does the ADS1672IPAGR handle out-of-range conditions?
The device includes an out-of-range detection feature that provides an indicator for out-of-range conditions).
- What is the dynamic range of the ADS1672IPAGR at different sampling rates?
The dynamic range is 107 dB at 625 kSPS and 115.5 dB at 78 kSPS).
- What is the total harmonic distortion (THD) of the ADS1672IPAGR?
The THD is -113 dB).
