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ADS1178IPAPR bảng dữ liệu(PDF) 1 Page - Texas Instruments

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tên linh kiện ADS1178IPAPR
Giải thích chi tiết về linh kiện  Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters
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ADS1178IPAPR bảng dữ liệu(HTML) 1 Page - Texas Instruments

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BurrBrown Products
from Texas Instruments
ADS1174
ADS1178
1
FEATURES
DESCRIPTION
APPLICATIONS
VREFP VREFN AVDD
DVDD
TEST[1:0]
FORMAT[2:0]
CLK
SYNC
PWDN[8:1]
CLKDIV
Control
Logic
SPI
and
Frame-
Sync
Interface
IOVDD
DGND
AGND
DRDY/FSYNC
SCLK
DOUT[8:1]
DIN
Input2
Input1
Input4
Input3
Input6
Input5
Input8
Input7
DS
DS
DS
DS
DS
DS
DS
DS
PWDN[4:1]
ADS1178
Four
Digital
Filters
AVDD
DVDD
TEST[1:0]
FORMAT[2:0]
CLK
SYNC
CLKDIV
Control
Logic
SPI
and
Frame-
Sync
Interface
IOVDD
DGND
AGND
DRDY/FSYNC
SCLK
DOUT[4:1]
DIN
ADS1174
MODE
MODE
Eight
Digital
Filters
VREFP VREFN
Input2
Input1
Input4
Input3
DS
DS
DS
DS
ADS1174
ADS1178
SBAS373 – OCTOBER 2007
Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters
234
• Synchronously Sample Four/Eight Channels
• Selectable Operating Modes:
The ADS1174 (quad) and ADS1178 (octal) are
multiple delta-sigma (
ΔΣ) analog-to-digital converters
High-Speed: 52kSPS Data Rate, 30mW/ch
(ADCs) with data rates up to 52k samples-per-second
Low-Power: 10kSPS Data Rate, 8mW/ch
(SPS), which allow synchronous sampling of four and
• AC Performance:
eight
channels.
These
devices
use
identical
25kHz Bandwidth
packages, permitting drop-in expandability.
97dB SNR
The delta-sigma architecture offers near ideal 16-bit
–105dB THD
ac performance (97dB SNR, –105dB THD, 1LSB
• Digital Filter:
linearity) combined with 0.005dB passband ripple,
Linear Phase Response
and linear phase response.
Passband Ripple: ±0.005dB
The
high-order,
chopper-
stabilized
modulator
Stop Band Attenuation: 100dB
achieves very low drift (4
μV/
°C offset, 4ppm/°C gain)
• Selectable SPI™ or Frame Sync Serial
and low noise (1LSBPP). The on-chip finite impulse
Interface
response
(FIR)
filter
provides
a
usable
signal
• Simple Pin-Driven Control
bandwidth up to 90% of the Nyquist rate with 100dB
of stop band attenuation while suppressing modulator
• Low Sampling Aperture Error
and signal out-of-band noise.
• Specified from –40°C to +105°C
Two operating modes allow for optimization of speed
• Analog Supply: 5V
and power: High-speed mode (32mW/Ch at 52kSPS),
• I/O Supply: 1.8V to 3.3V
and Low-power mode (8mW/Ch at 10kSPS).
• Digital Core Supply: 1.8V
A
SYNC
input
control
pin
allows
the
device
conversions to be started and synchronized to an
external event. SPI and Frame-Sync serial interfaces
• 3-Phase Power Monitors
are supported. The device is fully specified over the
extended industrial range (–40
°C to +105°C) and is
• Defibrillators and ECG Monitors
available in an HTQFP-64 PowerPAD™ package.
• Coriolis Flow Meters
• Vibration/Modal Analysis
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
PowerPAD is a trademark of Texas Instruments.
3
SPI is a trademark of Motorola, Inc.
4
All other trademarks are the property of their respective owners.
PRODUCT PREVIEW information concerns products in the
Copyright © 2007, Texas Instruments Incorporated
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.


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