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ADS1672
DS
Modulator
DVDD
DGND
AINP
AINN
ADS1672
AGND
AVDD
VREFP
VREFN
Dual
Path
Filter
Low-LatencyFilter
Wide-BandwidthFilter
CMOSand
LVDS
Compatible
Serial
Interface
DataReady
DataOutput
SerialShiftClock
ChipSelect
InterfaceConfiguration
MasterClock
FilterPath
DataRate
StartConversion
PowerDown
Out-of-Range
Control
ADS1672
www.ti.com
SBAS402D –JUNE 2008–REVISED JULY 2010
625kSPS, 24-Bit Analog-to-Digital Converter
Check for Samples: ADS1672
1
FEATURES
DESCRIPTION
2
• AC Performance:
The ADS1672 is a high-speed, high-precision
107dB of Dynamic Range at 625kSPS
analog-to-digital converter (ADC). Using an advanced
115.5dB of Dynamic Range at 78kSPS
delta-sigma (ΔΣ) architecture, it operates at speeds
up to 625kSPS with outstanding ac performance and
–113dB THD
dc accuracy.
• DC Accuracy:
3ppm INL
The ADS1672 ADC is comprised of a low-drift,
2mV/°C Offset Drift
chopper-stabilized modulator with out-of-range
detection and a dual-path programmable digital filter.
2ppm/°C Gain Drift
The dual filter path allows the user to select between
• Programmable Digital Filter with
two post-processing filters: low-latency or
User-Selectable Path:
wide-bandwidth. The low-latency filter settles quickly
– Low-Latency: Completely settles in 5.5ms
in one cycle, for applications with large instantaneous
changes, such as a multiplexer. The wide-bandwidth
– Wide-Bandwidth: 305kHz BW with flat
path provides an optimized frequency response for ac
passband
measurements with a passband ripple of less than
• Flexible Read-Only Serial Interface:
0.001dB, stop band attenuation of 86dB, and a
– Standard CMOS
bandwidth of 305kHz.
– Serialized LVDS
The ADS1672 is controlled through I/O pins—there
• Easy Conversion Control with START Pin
are no registers to program. A dedicated START pin
allows for direct control of conversions: toggle the
• Out-of-Range Detection
START pin to begin a conversion, and then retrieve
• Supply: Analog +5V, Digital +3V
the output data. The flexible serial interface supports
• Power: 350mW
data readback with either standard CMOS and LVDS
logic levels, allowing the ADS1672 to directly connect
APPLICATIONS
to a wide range of microcontrollers, digital signal
processors (DSPs), or field-programmable grid arrays
• Automated Test Equipment
(FPGAs).
• Vibration Analysis
The ADS1672 operates from an analog supply of 5V
• Sonar
and digital supply of 3V, and dissipates 350mW of
• Test and Measurement
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.
2All 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.
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 16
- ・ Abmessungen des Paketumrisses on Seite 28 Seite 29 Seite 30
- ・ Teilenummerierungssystem on Seite 2
- ・ Blockdiagramm on Seite 13
- ・ Beschreibung der Funktionen on Seite 5 Seite 6
- ・ Technische Daten on Seite 2
- ・ Anwendungsbereich on Seite 1 Seite 25 Seite 33
- ・ Elektrische Spezifikation on Seite 3 Seite 4
