Overview
The ADS127L11IPWR is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed to offer an excellent combination of AC performance and DC precision, along with low power consumption. It features programmable data rates up to 400 kSPS using the wideband filter and up to 1.067 MSPS using the low-latency filter. The ADS127L11IPWR integrates input and reference buffers to reduce signal loading and includes a low-drift modulator for outstanding AC performance and DC precision. The power-scalable architecture allows for optimization of data rate, resolution, and power consumption in high-speed and low-speed modes.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24-bit | |
| Data Rate (Wideband Filter) | Up to 400 kSPS | kSPS |
| Data Rate (Low-Latency Filter) | Up to 1.067 MSPS | MSPS |
| Dynamic Range (200 kSPS) | 111.5 dB | dB |
| THD | –120 dB | dB |
| INL | 0.9 ppm of FS | ppm |
| Offset Drift | 50 nV/°C | nV/°C |
| Gain Drift | 0.6 ppm/°C | ppm/°C |
| Power Consumption (High-Speed Mode) | 18.6 mW | mW |
| Power Consumption (Low-Speed Mode) | 3.3 mW | mW |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Options | 3-mm × 3-mm WQFN, 6.5-mm × 4.4-mm TSSOP |
Key Features
- Programmable data rate: up to 400 kSPS (wideband filter) and up to 1.067 MSPS (low-latency filter)
- Selectable digital filter: wideband or low-latency
- AC accuracy with DC precision: dynamic range of 111.5 dB, THD of –120 dB, INL of 0.9 ppm of FS
- Power-scalable architecture: high-speed mode (400 kSPS, 18.6 mW) and low-speed mode (50 kSPS, 3.3 mW)
- Input and reference precharge buffers to reduce signal loading
- Internal or external clock options
- Functional Safety-Capable with documentation available for functional safety system design
- Serial interface with daisy-chain capability and cyclic-redundancy check (CRC) feature for enhanced reliability
Applications
- Test and measurement: data acquisition (DAQ), shock and vibration instruments, acoustics, and dynamic strain gauges
- Factory automation and control: condition monitoring
- Aerospace and defense: SONAR
- Medical: electroencephalogram (EEG)
- Grid Infrastructure: power quality analyzer
Q & A
- What is the resolution of the ADS127L11IPWR ADC?
The ADS127L11IPWR is a 24-bit delta-sigma analog-to-digital converter.
- What are the data rates supported by the ADS127L11IPWR?
The device supports data rates up to 400 kSPS using the wideband filter and up to 1.067 MSPS using the low-latency filter.
- What is the dynamic range of the ADS127L11IPWR at 200 kSPS?
The dynamic range is 111.5 dB at 200 kSPS.
- What are the power consumption modes of the ADS127L11IPWR?
The device has a high-speed mode consuming 18.6 mW and a low-speed mode consuming 3.3 mW.
- Does the ADS127L11IPWR support internal or external clock options?
Yes, the device supports both internal and external clock options.
- What are the package options for the ADS127L11IPWR?
The device is available in 3-mm × 3-mm WQFN and 6.5-mm × 4.4-mm TSSOP packages.
- What is the operating temperature range of the ADS127L11IPWR?
The device operates over a temperature range of –40°C to +125°C.
- Does the ADS127L11IPWR have any safety features?
Yes, the device is Functional Safety-Capable with documentation available to aid in functional safety system design.
- What applications is the ADS127L11IPWR suitable for?
The device is suitable for various applications including test and measurement, factory automation, aerospace and defense, medical, and grid infrastructure.
- Does the ADS127L11IPWR support daisy-chain capability?
Yes, the serial interface of the device features daisy-chain capability to reduce SPI I/O over an isolation barrier.
