Overview
The ADS8578SIPMR, produced by Texas Instruments, is a 14-bit high-speed, 8-channel simultaneous-sampling analog-to-digital converter (ADC) with integrated analog front-end. This device is part of an 8-channel integrated data acquisition (DAQ) system based on a successive approximation register (SAR) ADC architecture. It features simultaneous sampling of all input channels, achieving a maximum throughput of 200 kSPS per channel. The ADS8578SIPMR is designed for high-performance applications, including industrial automation and control, with its ability to handle true bipolar inputs of ±10 V and ±5 V using a single 5-V supply.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14 bits |
| Number of Channels | 8 |
| Sampling Rate | Up to 200 kSPS per channel |
| Input Range | ±10 V and ±5 V (pin-programmable) |
| Input Impedance | 1 MΩ |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 2.3 V to 5 V |
| Temperature Range | –40°C to +125°C |
| Package | 64-Pin LQFP |
| DNL | ±0.2 LSB |
| INL | ±0.2 LSB |
| SNR | 85.8 dB |
| THD | –109 dB |
| Offset Drift | 3 ppm/°C |
| Gain Drift | 6 ppm/°C |
Key Features
- Simultaneous sampling of 8 channels with zero-latency conversions.
- Integrated analog front-end for each channel, including programmable gain amplifier (PGA), input clamp, low-pass filter, and ADC input driver.
- Low-drift, precision reference with a buffer to drive the ADC.
- Flexible digital interface supporting serial, parallel, and parallel byte communication.
- High input impedance of 1 MΩ, allowing direct connection with sensors and transformers.
- Overvoltage input clamp with 7-kV ESD protection.
- Optional digital averaging filter for improved noise performance.
- Temperature-compensated internal reference with excellent temperature drift.
- Provision for using an external reference voltage.
Applications
The ADS8578SIPMR is well-suited for various high-performance applications, including:
- Industrial automation and control systems.
- Data acquisition systems requiring simultaneous sampling of multiple channels.
- Applications needing high accuracy and low noise, such as in medical devices and test equipment.
- Automotive and aerospace systems where robust and reliable data acquisition is critical.
Q & A
- What is the resolution of the ADS8578SIPMR ADC?
The ADS8578SIPMR has a resolution of 14 bits.
- How many channels does the ADS8578SIPMR support?
The device supports 8 simultaneous-sampling channels.
- What are the input voltage ranges for the ADS8578SIPMR?
The device can be configured to accept ±10 V and ±5 V true bipolar inputs.
- What is the maximum sampling rate of the ADS8578SIPMR?
The maximum sampling rate is up to 200 kSPS per channel.
- What is the input impedance of the ADS8578SIPMR?
The input impedance is 1 MΩ.
- Does the ADS8578SIPMR support external reference voltage?
Yes, the device allows the use of an external reference voltage.
- What is the temperature range of the ADS8578SIPMR?
The device operates over a temperature range of –40°C to +125°C.
- What type of digital interface does the ADS8578SIPMR support?
The device supports serial, parallel, and parallel byte communication interfaces.
- Does the ADS8578SIPMR have built-in overvoltage protection?
Yes, the device features an overvoltage input clamp with 7-kV ESD protection.
- Can the ADS8578SIPMR be used in industrial automation applications?
Yes, it is highly suitable for industrial automation and control applications due to its high performance and accuracy.
