Overview
The ADS8568SPM from Texas Instruments is a 16-bit, 8-channel, simultaneous-sampling analog-to-digital converter (ADC) based on successive approximation register (SAR) architecture. This device is part of the ADS85x8 family, which includes pin- and software-compatible 12-, 14-, and 16-bit ADCs. The ADS8568SPM is designed for high-speed signal acquisition with true bipolar inputs, making it suitable for various industrial and measurement applications.
The device supports selectable parallel or serial interfaces with daisy-chain capability, and it features a programmable, buffered internal reference that can handle input voltage ranges up to ±12 V. It operates over an extended industrial temperature range of –40°C to +125°C and is available in 64-pin VQFN and LQFP packages.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Number of Channels | 8 | |
| Maximum Data Rate per Channel | 510 kSPS (PAR) or 400 kSPS (SER) | kSPS |
| Signal-to-Noise Ratio (SNR) | 91.5 dB | dB |
| Total Harmonic Distortion (THD) | –94 dB | dB |
| Input Voltage Range | ±12 V | V |
| Reference Voltage Range | 0.5 V–2.5 V or 0.5 V–3.0 V | V |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | 64-pin VQFN, 64-pin LQFP | |
| Power Consumption at 10 kSPS | 32 mW | mW |
Key Features
- Family of pin- and software-compatible ADCs with 12-, 14-, and 16-bit resolutions.
- Simultaneous sampling of all eight channels.
- Selectable parallel or serial interface with daisy-chain capability.
- Programmable, buffered internal reference supporting input voltage ranges up to ±12 V.
- Excellent AC performance with high SNR and low THD.
- Scalable low-power operation using auto-sleep mode.
- Fully specified over an extended industrial temperature range.
Applications
- Protection Relays
- Power Quality Measurement
- Multi-Axis Motor Controls
- Programmable Logic Controllers
- Industrial Data Acquisition
Q & A
- What is the resolution of the ADS8568SPM ADC?
The ADS8568SPM has a resolution of 16 bits.
- How many channels does the ADS8568SPM support?
The device supports 8 channels.
- What is the maximum data rate per channel for the ADS8568SPM?
The maximum data rate per channel is 510 kSPS in parallel mode or 400 kSPS in serial mode.
- What is the signal-to-noise ratio (SNR) of the ADS8568SPM?
The SNR of the ADS8568SPM is 91.5 dB.
- What is the total harmonic distortion (THD) of the ADS8568SPM?
The THD of the ADS8568SPM is –94 dB.
- What is the input voltage range supported by the ADS8568SPM?
The device supports input voltage ranges up to ±12 V.
- What are the package options for the ADS8568SPM?
The device is available in 64-pin VQFN and 64-pin LQFP packages.
- How much power does the ADS8568SPM consume at 10 kSPS?
The power consumption at 10 kSPS is 32 mW.
- What is the operating temperature range of the ADS8568SPM?
The operating temperature range is –40°C to +125°C.
- Does the ADS8568SPM support auto-sleep mode?
Yes, the device supports an auto-sleep mode to minimize power dissipation.
