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ADS1288IRHBR - 32-Bit, low-power analog-to-digital converters

Product Overviews

ADS1288IRHBR is a 32-bit, low-power, analog-todigital converter (ADC), with a programmable gain amplifier (PGA) and a finite impulse response (FIR) filter. The low-noise PGA extends the ADC dynamic range through gains 1 to 64. The PGA allows direct connection to geophones and transformercoupled hydrophones without the need of an external amplifier. The optional unity-gain buffer reduces power consumption. The ADC supports 3.3V operation to minimize device power consumption. Power consumption is 3mW (typical) in buffer mode operation and 5mW (typical) in PGA mode operation.

Features Of ADS1288IRHBR

• Power consumption:

– PGA operation: 5mW (typical)

– Buffer operation: 3mW (typical)

• Dynamic range:

– PGA gain: 1, 500SPS (122dB, typical)

– Buffer operation: 500SPS (122dB, typical)

• THD: < –120dB (typical)

• CMRR: 120dB (typical)

• Flexible digital filter:

– Selectable sinc + FIR + IIR

– Linear or minimum phase

– High-pass filter

• Data rates: 125SPS to 2000SPS

• PGA gains: 1 to 64

• SYNC input

• Clock error compensation

• Two-channel multiplexer

• Offset and gain calibration

• General-purpose digital I/Os

• Analog supply operation: 5V, 3.3V, or ±2.5V

Applications

• Energy exploration

• Passive seismic monitoring

• Earth sciences and geology

• Precision instrumentation

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