ADS8528_14 Datasheet, PDF (1/52 Pages) Texas Instruments – 12-, 14-, 16-Bit, Eight-Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTERS

ADS8528
ADS8548
ADS8568
www.ti.com
SBAS543A – AUGUST 2011 – REVISED OCTOBER 2011
12-, 14-, 16-Bit, Eight-Channel, Simultaneous Sampling
ANALOG-TO-DIGITAL CONVERTERS
Check for Samples: ADS8528, ADS8548, ADS8568
FEATURES
1
•2 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
DESCRIPTION
The ADS8528/48/68 contain eight low-power, 12-,
14-, or 16-bit, successive approximation register
(SAR)-based analog-to-digital converters (ADCs) with
true bipolar inputs. These channels are grouped in
four pairs, thus allowing simultaneous high-speed
signal acquisition of up to 650kSPS.
The devices support selectable parallel or serial
interface with daisy-chain capability. The
programmable reference allows handling of analog
input signals with amplitudes up to ±12V.
The ADS8528/48/68 family supports an auto-sleep
mode for minimum power dissipation and is available
in both QFN-64 and LQFP-64 packages. The entire
family is specified over a temperature range of –40°C
to +125°C.
Clock
Generator
CH_A0
CH_A1
CH_B0
CH_B1
CH_C0
CH_C1
CH_D0
CH_D1
SAR ADC
SAR ADC
SAR ADC
SAR ADC
SAR ADC
SAR ADC
SAR ADC
SAR ADC
Control
Logic
Config
Register
I/O
Control
Signal
Bus
Parallel
or Serial
Data Bus
REFIO
String DAC
2.5/3V
Reference
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated