ADS8588S Datasheet, PDF (1/63 Pages) Texas Instruments – 16-Bit, 200-kSPS, 8-, 6- and 4-Channel, Simultaneous-Sampling ADCs with Bipolar Inputs on a Single Supply

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ADS8588S, ADS8586S, ADS8584S
SBAS642 – DECEMBER 2016
ADS858xS 16-Bit, 200-kSPS, 8-, 6- and 4-Channel, Simultaneous-Sampling ADCs with
Bipolar Inputs on a Single Supply
1 Features
•1 16-Bit ADCs with Integrated Analog Front-End
• Simultaneous Sampling: 8-, 6-, and 4- Channels
• Pin-Programmable Bipolar Inputs: ±10 V and ±5 V
• High Input Impedance: 1 MΩ
• 5-V Analog Supply: 2.3-V to 5-V I/O Supply
• Overvoltage Input Clamp with 7-kV ESD
• Low-Drift, On-Chip Reference (2.5 V) and Buffer
• Excellent Performance:
– 200-kSPS Max Throughput on All Channels
– DNL: ±0.35 LSB; INL: ±0.45 LSB
– SNR: 96.4 dB; THD: −114 dB
• Over Temperature Performance:
– Max Offset Drift: 3 ppm/°C
– Gain Drift: 6 ppm/°C
• On-Chip Digital Filter for Oversampling
• Flexible Parallel, Byte, and Serial Interface
• Temperature Range: –40°C to +125°C
• Package: LQFP-64
2 Applications
• Monitoring and Control for Power Grids
• Protection Relays
• Multi-Phase Motor Controls
• Industrial Automation and Controls
• Multichannel Data Acquisition Systems
ADS858xS
AVDD
AIN_1P
AIN_1GND
1 M:
Clamp
Clamp
1 M:
PGA
2nd-Order
LPF
ADC
Driver
16-Bit
SAR
ADC
AIN_2P
AIN_2GND
1 M:
Clamp
Clamp
1 M:
PGA
2nd-Order
LPF
ADC
Driver
16-Bit
SAR
ADC
8 Channels for the ADS8588S
6 Channels for the ADS8586S
4 Channels for the ADS8584S
AIN_7P
AIN_7GND
1 M:
Clamp
Clamp
1 M:
PGA
2nd-Order
LPF
ADC
Driver
AIN_8P
AIN_8GND
1 M:
Clamp
Clamp
1 M:
PGA
2nd-Order
LPF
ADC
Driver
16-Bit
SAR
ADC
16-Bit
SAR
ADC
AGND
3 Description
The ADS8588S, ADS8586S, and ADS8584S devices
are 8-, 6- and 4-channel, integrated data acquisition
(DAQ) systems based on a 16-bit successive
approximation (SAR) analog-to-digital converter
(ADC). All input channels are simultaneously sampled
to achieve a maximum throughput of 200 kSPS per
channel. The devices feature a complete analog
front-end for each channel, including a programmable
gain amplifier (PGA) with high input impedance of
1 MΩ, input clamp, low-pass filter, and an ADC input
driver. The devices also feature a low-drift, precision
reference with a buffer to drive the ADC. A flexible
digital interface supporting serial, parallel, and parallel
byte communication enables the devices to be used
with a variety of host controllers.
The ADS858xS can be configured to accept ±10-V or
±5-V true bipolar inputs using a single 5-V supply.
The high input impedance allows direct connection
with sensors and transformers, thus eliminating the
need for external driver circuits. The high
performance and accuracy, along with zero-latency
conversions offered by these devices, also make the
ADS858xS a great choice for many industrial
automation and control applications.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
ADS858xS
LQFP (64)
10.00 mm × 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
DVDD
SAR
Logic
and
Digital Control
SER/PAR
Interface
Digital Filter
BUSY
FRSTDATA
STBY
CONVSTA, CONVSTB
RESET
RANGE/SDI
CS
RD / SCLK
PAR/SER
DB[15:0]
DOUTA
DOUTB
OS0
OS1
OS2
REFCAPA
REFCAPB
2.5 VREF
REFGND
REFIN/REFOUT
REFSEL
DGND
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.