Texas Instruments ADS8528 / ADS8548 / ADS8568 Bipolar Input ADCs
Texas Instruments ADS8528 / ADS8548 / ADS8568 8-channel bipolar input ADCs contain eight low-power, 12- (ADS8528), 14- (ADS8548), or 16-bit (ADS8568) SAR-based analog-to-digital converters (ADCs) with true bipolar inputs. The channels of these devices are grouped in four pairs, allowing simultaneous high-speed signal acquisition of up to 650kSPS. These Texas Instruments ADCs support selectable parallel or serial interfaces with daisy-chain capability. The programmable reference allows the handling of analog input signals with amplitudes up to ±12V. The ADS8528 / ADS8548 / ADS8568 family supports an auto-sleep mode for minimum power dissipation. The entire family is specified over a temperature range of -40°C to +125°C. These devices are ideal for use in protection relays, power quality measurement, and multi-axis motor control applications.
Features
- Family of 12-, 14-, 16-Bit, Pin- and Software-Compatible ADCs
- Maximum Data Rate Per Channel
- ADS8528: 650kSPS (PAR) or 480kSPS (SER)
- ADS8548: 600kSPS (PAR) or 450kSPS (SER)
- ADS8568: 510kSPS (PAR) or 400kSPS (SER)
- Excellent AC Performance
- Signal-to-Noise Ratio
- ADS8528: 73.9dB
- ADS8548: 85dB
- ADS8568: 91.5dB
- Total Harmonic Distortion
- ADS8528: -89dB
- ADS8548: -91dB
- ADS8568: -94dB
- Programmable and Buffered Internal Reference: 0.5V to 2.5V or 0.5V to 3.0V Supports Input Voltage Ranges of Up to ±12V
- Selectable Parallel or Serial Interface
- Scalable Low-Power Operation Using Auto-Sleep Mode: Only 32mW at 10kSPS
- Fully Specified Over the Extended Industrial Temperature Range
Applications
- Protection Relays
- Power Quality Measurement
- Multi-Axis Motor Control
- Programmable Logic Controllers
- Industrial Data Acquisition
Simplified Block Diagram
Published: 2012-03-12
| Updated: 2022-03-11