The ADS1282 is an extremely high-performance, single-chip analog-to-digital converter
(ADC) with an integrated, low-noise programmable gain amplifier (PGA) and two-channel input
multiplexer (mux). The ADS1282 is suitable for the demanding needs of energy exploration and
seismic monitoring environments.
The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that
provides outstanding noise and linearity performance. The modulator is used either in conjunction
with the on-chip digital filter, or can be bypassed for use with post processing filters.
The flexible input MUX provides an additional external input for measurement, as well as
internal self-test connections. The PGA features outstanding low noise (5
nV/√Hz) and high input impedance, allowing easy interfacing to geophones and
hydrophones over a wide range of gains.
The digital filter provides selectable data rates from 250 to 4000 samples per second
(SPS). The high-pass filter (HPF) features an adjustable corner frequency. On-chip gain and offset
scaling registers support system calibration.
The synchronization input (SYNC) can be used to synchronize the conversions of multiple
ADS1282s. The SYNC input also accepts a clock input for continuous alignment of conversions from an
Together, the amplifier, modulator, and filter dissipate 25 mW. The ADS1282 is available
in a compact TSSOP-28 package and is fully specified from –40°C to +85°C, with a maximum operating
range to +125°C.
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