Overview
The ADS1178IPAPR is a high-performance, octal, simultaneous sampling, 16-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the ADS1178 series, which includes advanced delta-sigma (ΔΣ) ADCs designed for efficient multi-channel data acquisition and processing. The ADS1178IPAPR is housed in a 64-pin HTQFP (PowerPAD) package and is fully specified over the extended industrial temperature range of -40°C to +105°C. It offers a balance of speed and precision, making it an essential component for various industrial and medical applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 16 | |
| Number of Inputs | 8 | |
| Sampling Rate | Up to 52k SPS | SPS |
| Operating Temperature Range | -40°C to +105°C | °C |
| Analog Supply Voltage | 4.75V to 5.25V | V |
| Digital Core Supply Voltage | 1.65V to 1.95V | V |
| I/O Supply Voltage | 1.65V to 3.6V | V |
| Data Interface | SPI, Frame-Sync | |
| Input Type | Differential, Single Ended | |
| Package | 64-HTQFP (PowerPAD) | |
| SNR (Signal-to-Noise Ratio) | 97 dB | dB |
| THD (Total Harmonic Distortion) | -105 dB | dB |
| Offset Drift | 2 µV/°C | µV/°C |
| Gain Drift | 2 ppm/°C | ppm/°C |
Key Features
- Simultaneous Sampling: Capable of simultaneously sampling eight channels, making it ideal for applications requiring synchronized data acquisition.
- Selectable Operating Modes: Offers High-Speed mode (52k SPS, 31mW/ch) and Low-Power mode (10k SPS, 7mW/ch) for optimizing between speed and power consumption.
- AC Performance: Features 25kHz bandwidth, 97dB SNR, and -105dB THD, ensuring high-quality analog-to-digital conversion.
- DC Performance: Low offset drift (2µV/°C) and gain drift (2ppm/°C), contributing to high accuracy and stability.
- Digital Filter: Includes a linear phase response FIR filter with ±0.005dB passband ripple and 100dB stop band attenuation.
- Serial Interface: Supports both SPI and Frame-Sync serial interfaces for flexible data communication.
- Simple Pin-Driven Control: Easy control through pin-driven configurations.
- Low Sampling Aperture Error: Ensures precise sampling with minimal error.
Applications
- 3-Phase Power Monitors: Suitable for monitoring and measuring power in three-phase systems.
- Defibrillators and ECG Monitors: Used in medical devices requiring high precision and reliability.
- Coriolis Flow Meters: Ideal for precise flow measurement in industrial applications.
- Vibration/Modal Analysis: Utilized in systems that require accurate vibration and modal analysis.
Q & A
- What is the resolution of the ADS1178IPAPR ADC?
The ADS1178IPAPR has a 16-bit resolution.
- How many channels does the ADS1178IPAPR support?
The ADS1178IPAPR supports eight channels.
- What are the operating modes available for the ADS1178IPAPR?
The device offers High-Speed mode (52k SPS, 31mW/ch) and Low-Power mode (10k SPS, 7mW/ch).
- What is the signal-to-noise ratio (SNR) of the ADS1178IPAPR?
The SNR is 97 dB.
- What type of digital filter does the ADS1178IPAPR use?
The device uses a linear phase response FIR filter.
- What are the supported serial interfaces for the ADS1178IPAPR?
The device supports both SPI and Frame-Sync serial interfaces.
- What is the operating temperature range of the ADS1178IPAPR?
The operating temperature range is -40°C to +105°C.
- What is the power consumption per channel in High-Speed mode?
In High-Speed mode, the power consumption is 31mW per channel.
- What is the offset drift of the ADS1178IPAPR?
The offset drift is 2 µV/°C.
- What are some typical applications of the ADS1178IPAPR?
Typical applications include 3-phase power monitors, defibrillators and ECG monitors, Coriolis flow meters, and vibration/modal analysis.
