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ADS1675 Datasheet(PDF) 1 Page - Texas Instruments

Part # ADS1675
Description  4MSPS, 24-Bit Analog-to-Digital Converter
Download  36 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS1675 Datasheet(HTML) 1 Page - Texas Instruments

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DS
Modulator
AINP
AINN
ADS1675
DVDD
DGND
AGND
AVDD
VREFP VREFN
Dual
Path
Filter
Low-Latency
Filter
Wide-Bandwidth
Filter
CMOSand
LVDS
Compatible
Serial
Interface
DataReady
DataOutput
SerialShiftClock
ChipSelect
InterfaceConfiguration
MasterClock
FilterPath
DataRate
StartConversion
PowerDown
Out-of-Range
Control
CLK
PLL
3x
ADS1675
www.ti.com
SBAS416D – DECEMBER 2008 – REVISED AUGUST 2010
4MSPS, 24-Bit Analog-to-Digital Converter
Check for Samples: ADS1675
1
FEATURES
DESCRIPTION
2
AC Performance:
The
ADS1675
is
a
high-speed,
high-precision
103dB of Dynamic Range at 4MSPS
analog-to-digital converter (ADC). Using an advanced
111dB of Dynamic Range at 125kSPS
delta-sigma (
ΔΣ) architecture, it operates at speeds
up to 4MSPS with outstanding ac performance and
–107dB THD
dc accuracy.
DC Accuracy:
3ppm INL
The ADS1675 ADC is comprised of a low-drift
4mV/°C Offset Drift
modulator with out-of-range detection and a dual-path
programmable digital filter. The dual filter path allows
4ppm/°C Gain Drift
the user to select between two post-processing filters:
Programmable Digital Filter with
Low-Latency or Wide-Bandwidth. The Low-Latency
User-Selectable Path:
filter
settles
quickly
(as
fast
as
2.65ms)
for
Low-Latency: Completely settles in 2.65ms
applications with large instantaneous changes, such
as a multiplexer. The Wide-Bandwidth path provides
Wide-Bandwidth: 1.7MHz BW with flat
an
optimized
frequency
response
for
ac
passband
measurements with a passband ripple of less than
Flexible Read-Only Serial Interface:
±0.00002dB, stop band attenuation of 86dB, and a
Standard CMOS
bandwidth of 1.7MHz.
Serialized LVDS
The device offers two speed modes with distinct
Easy Conversion Control with START Pin
interface,
resolution,
and
feature
set.
In
the
high-speed mode the device can be set to operate at
Out-of-Range Detection
either 4MSPS or 2MSPS. In the low-speed mode, it
Supply: Analog +5V, Digital +3V
can be set to operate at either 1MSPS, 500KSPS,
Power: 575mW
250KSPS or 125KSPS.
The ADS1675 is controlled through I/O pins—there
APPLICATIONS
are no registers to program. A dedicated START pin
Automated Test Equipment
allows for direct control of conversions: toggle the
Medical Imaging
START pin to begin a conversion, and then retrieve
the output data. The flexible serial interface supports
Scientific Instrumentation
data readback with either standard CMOS and LVDS
Test and Measurement
logic levels, allowing the ADS1675 to directly connect
to a wide range of microcontrollers, digital signal
processors (DSPs), or field-programmable grid arrays
(FPGAs).
The ADS1675 operates from an analog supply of 5V
and digital supply of 3V, and dissipates 575mW of
power. When not in use, the PDWN pin can be used
to power down all device circuitry. The device is fully
specified over the industrial temperature range and is
offered in a TQFP-64 package.
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
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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