The ADS1283 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 ADS1283 is suitable for the demanding needs of seismic monitoring
The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that
provides outstanding noise and linearity performance. The modulator digital output is digitally
filtered and decimated by the on-chip digital filter to yield the ADC conversion result.
The flexible input mux provides an additional external input for measurement, as well as
internal self-test input connections. The PGA features outstanding low noise (5
nV/√Hz) and very-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
The ADS1283 is available in a compact 24-lead, 5-mm × 4-mm VQFN package, and is fully
specified from –40°C to +85°C, with a maximum operating temperature range of –50°C to