Overview
The ADS1675IPAGR, produced by Texas Instruments, is a high-speed, high-precision analog-to-digital converter (ADC) utilizing an advanced delta-sigma (ΔΣ) architecture. It operates at speeds up to 4 million samples per second (MSPS) with outstanding AC performance and DC accuracy. This ADC is designed for applications requiring high precision and fast conversion rates, making it suitable for a variety of demanding environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| AC Performance - Dynamic Range at 4MSPS | 103 dB | - |
| AC Performance - Dynamic Range at 125kSPS | 111 dB | - |
| THD | –107 dB | - |
| DC Accuracy - Integral Nonlinearity (INL) | 3 ppm | - |
| DC Accuracy - Offset Drift | 4 µV/°C | - |
| DC Accuracy - Gain Drift | 4 ppm/°C | - |
| Programmable Digital Filter Paths | Low-Latency, Wide-Bandwidth | - |
| Low-Latency Filter Settling Time | 2.65 µs | - |
| Wide-Bandwidth Filter Bandwidth | 1.7 MHz | - |
| Serial Interface | Standard CMOS, Serialized LVDS | - |
| Analog Supply Voltage | +5 V | - |
| Digital Supply Voltage | +3 V | - |
| Power Consumption | 575 mW | - |
| Operating Temperature Range | –40°C to +85°C | - |
| Package Type | TQFP-64 | - |
Key Features
- High-Speed Operation: The ADS1675 operates at speeds up to 4 MSPS with two speed modes offering different interface, resolution, and feature sets.
- Dual-Path Programmable Digital Filter: Allows selection between Low-Latency and Wide-Bandwidth filters. The Low-Latency filter settles quickly (2.65 µs) for applications with large instantaneous changes, while the Wide-Bandwidth path provides an optimized frequency response for AC measurements.
- Flexible Serial Interface: Supports data readback with standard CMOS and LVDS logic levels, enabling direct connection to microcontrollers, DSPs, or FPGAs.
- Easy Conversion Control: A dedicated START pin allows for direct control of conversions.
- Out-of-Range Detection: Provides an indicator for out-of-range conditions.
- Power Management: The device can be powered down using the PDWN pin when not in use.
Applications
- Automated Test Equipment: Ideal for high-precision measurement and testing.
- Medical Imaging: Suitable for medical imaging applications requiring high accuracy and speed.
- Scientific Instrumentation: Used in various scientific instruments that demand high precision and fast data acquisition.
- Test and Measurement: Applicable in test and measurement equipment where high-speed and high-precision ADCs are necessary.
Q & A
- What is the maximum sampling rate of the ADS1675?
The ADS1675 can operate at speeds up to 4 MSPS.
- What types of digital filters are available on the ADS1675?
The ADS1675 features two programmable digital filter paths: Low-Latency and Wide-Bandwidth.
- What is the settling time of the Low-Latency filter?
The Low-Latency filter settles in as fast as 2.65 µs.
- What are the supply voltage requirements for the ADS1675?
The device requires an analog supply of +5 V and a digital supply of +3 V.
- How much power does the ADS1675 consume?
The ADS1675 dissipates 575 mW of power.
- What is the operating temperature range of the ADS1675?
The device operates over an industrial temperature range of –40°C to +85°C.
- What package type is the ADS1675 available in?
The ADS1675 is offered in a TQFP-64 package.
- How is the conversion process controlled on the ADS1675?
The conversion process is controlled through the dedicated START pin.
- Does the ADS1675 support out-of-range detection?
Yes, the ADS1675 includes out-of-range detection.
- Can the ADS1675 be powered down when not in use?
Yes, the device can be powered down using the PDWN pin.
