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ADS1672IPAG
High Speed High Resolution 625kSPS 24 bit Delta Sigma ADC
ADS1672
www.ti.com SBAS402D –JUNE 2008–REVISED JULY 2010
625kSPS, 24-Bit Analog-to-Digital Converter
Checkfor Samples: ADS1672
1FEATURES DESCRIPTION AC Performance: The ADS1672 is a high-speed, high-precision
107dBof Dynamic Rangeat 625kSPS analog-to-digital converter (ADC). Using an advanced
115.5dBof Dynamic Rangeat 78kSPS delta-sigma (ΔΣ) architecture,it operatesat speedsto 625kSPS with outstandingac performance and
–113dB THD accuracy.
• DC Accuracy:
3ppm INL The ADS1672 ADC is comprised ofa low-drift,
2mV/°C Offset Drift chopper-stabilized modulator with out-of-range
detection anda dual-path programmable digital filter.
2ppm/°C Gain DriftThe dual filter path allows the userto 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 settlesin 5.5ms in one cycle, for applications with large instantaneous
changes, such asa multiplexer. The wide-bandwidth
– Wide-Bandwidth: 305kHz BW with flatpath providesan optimized frequency responseforac
passband measurements witha passband rippleof less than
• Flexible Read-Only Serial Interface: 0.001dB, stop band attenuation of 86dB, anda
– Standard CMOS bandwidthof 305kHz.
Serialized LVDS The ADS1672is controlled through I/O pins—there
• Easy Conversion Control with START Pin are no registersto program.A dedicated START pin
allows for direct controlof conversions: toggle the
• Out-of-Range Detection START pinto begina 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 ADS1672to directly connect
APPLICATIONS toa wide range of microcontrollers, digital signal
processors (DSPs),or field-programmable grid arrays
• Automated Test Equipment (FPGAs).
• Vibration AnalysisThe ADS1672 operates from an analog supplyof 5V
• Sonarand digital supplyof 3V, and dissipates 350mWof
• Test and Measurement power. When notin use, the PDWN pin can be used power downall device circuitry. The deviceis fully over the industrial temperature range andis package.
