Overview
The ADS1278IPAPR, produced by Texas Instruments, is a 24-bit, 8-channel delta-sigma (ΔΣ) analog-to-digital converter (ADC). This device is designed for high-precision industrial measurements, offering excellent DC and AC specifications. It is based on the single-channel ADS1271 and is part of the ADS1274 (quad) and ADS1278 (octal) family, allowing simultaneous sampling of four or eight channels. The ADS1278IPAPR is available in an HTQFP-64 PowerPAD™ package and is fully specified over the extended industrial temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 | Bits |
| Data Rate | Up to 144k SPS | SPS |
| Bandwidth | 70 kHz | kHz |
| SNR (High-Resolution Mode) | 111 dB | dB |
| THD (High-Resolution Mode) | –108 dB | dB |
| Offset Drift | 0.8 µV/°C | µV/°C |
| Gain Drift | 1.3 ppm/°C | ppm/°C |
| Analog Supply | 5 V | V |
| Digital Core Supply | 1.8 V | V |
| I/O Supply | 1.8 V to 3.3 V | V |
| Operating Temperature Range | –40°C to +105°C | °C |
| Package Type | HTQFP-64 PowerPAD™ |
Key Features
- Simultaneously measure four or eight channels
- Up to 144k SPS data rate
- AC Performance: 70 kHz bandwidth, 111 dB SNR (High-Resolution Mode), –108 dB THD
- DC Accuracy: 0.8 µV/°C offset drift, 1.3 ppm/°C gain drift
- Selectable operating modes:
- High-Speed: 144k SPS, 106 dB SNR
- High-Resolution: 52k SPS, 111 dB SNR
- Low-Power: 52k SPS, 31 mW/ch
- Low-Speed: 10k SPS, 7 mW/ch
- Linear phase digital filter
- SPI™ or Frame-Sync serial interface
- Low sampling aperture error
- Modulator output option (digital filter bypass)
Applications
- Vibration/modal analysis
- Multi-channel data acquisition
- Acoustics/dynamic strain gauges
- Pressure sensors
Q & A
- What is the resolution of the ADS1278IPAPR?
The ADS1278IPAPR has a resolution of 24 bits.
- What are the different operating modes of the ADS1278IPAPR?
The ADS1278IPAPR has four selectable operating modes: High-Speed, High-Resolution, Low-Power, and Low-Speed.
- What is the maximum data rate of the ADS1278IPAPR?
The maximum data rate is up to 144k samples per second (SPS).
- What is the signal-to-noise ratio (SNR) in High-Resolution mode?
The SNR in High-Resolution mode is 111 dB.
- What is the operating temperature range of the ADS1278IPAPR?
The operating temperature range is –40°C to +105°C.
- What type of package does the ADS1278IPAPR come in?
The ADS1278IPAPR comes in an HTQFP-64 PowerPAD™ package.
- What are the power supply requirements for the ADS1278IPAPR?
The analog supply is 5 V, the digital core supply is 1.8 V, and the I/O supply is 1.8 V to 3.3 V.
- Does the ADS1278IPAPR support simultaneous sampling of multiple channels?
Yes, it supports simultaneous sampling of four or eight channels.
- What are some common applications of the ADS1278IPAPR?
Common applications include vibration/modal analysis, multi-channel data acquisition, acoustics/dynamic strain gauges, and pressure sensors.
- What interfaces does the ADS1278IPAPR support?
The ADS1278IPAPR supports SPI™ or Frame-Sync serial interfaces.
