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ADS8578S Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części ADS8578S
Szczegółowy opis  14-Bit, High-Speed, 8-Channel, Simultaneous-Sampling ADC with Bipolar Inputs on a Single Supply
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

ADS8578S Arkusz danych(HTML) 1 Page - Texas Instruments

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AIN_1P
AIN_1GND
AIN_2P
AIN_2GND
AIN_7P
AIN_7GND
AIN_8P
AIN_8GND
14-Bit
SAR
ADC
2.5 VREF
REFGND
AGND
DVDD
AVDD
ADS8578S
ADC
Driver
REFIN/REFOUT
REFCAPB
REFSEL
Digital Filter
OS2
OS0
OS1
SAR
Logic
and
Digital Control
DB[15:0]
DOUTA
DOUTB
PAR/SER
RANGE
RD/SCLK
CS
RESET
CONVSTA, CONVSTB
FRSTDATA
STBY
REFCAPA
BUSY
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
ADC
Driver
1 M:
Clamp
1 M:
3rd-Order
LPF
Clamp
PGA
14-Bit
SAR
ADC
14-Bit
SAR
ADC
14-Bit
SAR
ADC
SER/PAR
Interface
Copyright © 2017, Texas Instruments Incorporated
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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.
ADS8578S
SBAS825 – APRIL 2017
ADS8578S 14-Bit, High-Speed, 8-Channel, Simultaneous-Sampling ADC with
Bipolar Inputs on a Single Supply
1
1 Features
1
14-Bit ADC With Integrated Analog Front-End
Simultaneous Sampling: 8 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 Digital Supply
Overvoltage Input Clamp With 7-kV ESD
Low-Drift, On-Chip Reference (2.5 V) and Buffer
Excellent Performance:
200-kSPS Max Throughput per Channels
DNL: ±0.2 LSB; INL: ±0.2 LSB
SNR: 85.8 dB; THD:
−109 dB
Overtemperature 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: 64-Pin LQFP
2 Applications
Monitoring and Control for Power Grids
Protection Relays
Multiphase Motor Controls
Industrial Automation and Controls
Multichannel Data Acquisition Systems
3 Description
The ADS8578S device is an 8-channel, integrated
data acquisition (DAQ) system based on a 14-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 device
features 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
device also features 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 device to be used with a
variety of host controllers.
The ADS8578S 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 this device, also make the
ADS8578S
a
great
choice
for
many
industrial
automation and control applications.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADS8578S
LQFP (64)
10.00 mm × 10.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.


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