Overview
The ADS131M06IPBSR is a six-channel, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) produced by Texas Instruments. This device is designed to offer wide dynamic range, low power consumption, and energy-measurement-specific features, making it an excellent fit for applications such as energy metering, power metrology, and circuit breaker systems.
The ADC features six simultaneously sampling differential inputs, which can be directly interfaced to various sensors and measurement networks, including resistor-divider networks, power transformers, current transformers, or Rogowski coils. The device includes a low-noise, programmable gain amplifier (PGA) with gains ranging from 1 to 128, and it integrates channel-to-channel phase calibration and offset and gain calibration registers to enhance signal accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24-bit |
| Number of Channels | 6 |
| Sampling Rate | Up to 32 kSPS |
| Programmable Gain | Up to 128 |
| Dynamic Range | 102 dB at gain = 1, 4 kSPS; 80 dB at gain = 64, 4 kSPS |
| Total Harmonic Distortion | –100 dB |
| Input Impedance | 330 kΩ for gains of 1, 2, and 4; ≥ 1 MΩ for gains of 8, 16, 32, 64, and 128 |
| Supply Voltage | 2.7 V to 3.6 V (analog and digital) |
| Power Consumption | 4.9 mW at 3-V AVDD and DVDD |
| Operating Temperature Range | –40°C to +125°C |
| Package Type | 32-pin TQFP or 32-pin WQFN |
Key Features
- Six simultaneously sampling differential inputs for multi-signal acquisition.
- Programmable data rate up to 32 kSPS and programmable gain up to 128.
- High-impedance inputs for direct sensor connection with input impedance of 330 kΩ for gains of 1, 2, and 4, and ≥ 1 MΩ for gains of 8, 16, 32, 64, and 128.
- Programmable channel-to-channel phase delay calibration with 244-ns resolution.
- Current-detect mode for extremely low power tamper detection and fast startup with first data within 0.5 ms of supply ramp.
- Integrated negative charge pump allowing input signals below ground.
- Crosstalk between channels: –120 dB.
- Low-drift internal voltage reference of 1.2 V.
- Optional cyclic redundancy checks (CRCs) on communications and register map.
- Integrated SPI interface for easy digital connectivity.
- Sigma-Delta architecture providing excellent noise filtering.
Applications
The ADS131M06IPBSR is particularly suited for various applications requiring high-precision analog-to-digital conversion, including:
- Energy metering: Accurate measurement of voltage and current for energy consumption monitoring.
- Power metrology: Precise measurement of power parameters in industrial and commercial settings.
- Circuit breaker systems: Real-time monitoring and control of electrical circuits.
- Data acquisition systems: Simultaneous sampling of multiple signals in various industrial and scientific applications.
Q & A
- What is the resolution of the ADS131M06IPBSR ADC?
The ADS131M06IPBSR has a 24-bit resolution.
- How many channels does the ADS131M06IPBSR have?
The device has six simultaneously sampling channels.
- What is the maximum sampling rate of the ADS131M06IPBSR?
The maximum sampling rate is up to 32 kSPS.
- What is the range of programmable gain for the ADS131M06IPBSR?
The programmable gain ranges from 1 to 128.
- What is the dynamic range of the ADS131M06IPBSR at different gains?
The dynamic range is 102 dB at gain = 1, 4 kSPS, and 80 dB at gain = 64, 4 kSPS.
- What is the input impedance of the ADS131M06IPBSR for different gain settings?
The input impedance is 330 kΩ for gains of 1, 2, and 4, and ≥ 1 MΩ for gains of 8, 16, 32, 64, and 128.
- What is the supply voltage range for the ADS131M06IPBSR?
The supply voltage range is from 2.7 V to 3.6 V for both analog and digital supplies.
- What is the power consumption of the ADS131M06IPBSR?
The power consumption is 4.9 mW at 3-V AVDD and DVDD.
- What are the package options for the ADS131M06IPBSR?
The device is available in 32-pin TQFP and 32-pin WQFN packages.
- What is the operating temperature range of the ADS131M06IPBSR?
The operating temperature range is from –40°C to +125°C.
- Does the ADS131M06IPBSR support any error detection mechanisms?
Yes, it supports cyclic redundancy checks (CRCs) on communications and register map.
