Texas Instruments ADS1283
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 equipment. The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance.| Part No. | ADS1283 |
|---|---|
| Datasheet | ADS1283 Download |
| Manufacturer |  Texas Instruments |
| Description | ADC |
| Buy | Stock & Price |
FEATURES
●1 High Resolution: – SNR: 130 dB (250 SPS, PGA = 1)● High Accuracy: – THD: –122 dB
● Low Power Consumption: – 18 mW (PGA = 1, 2, 4, or 8) – Shutdown Mode: 10 μW
● Low-Noise PGA: 5 nV/√Hz
● Two-Channel Input Multiplexer
● Inherently-Stable Modulator With Fast Responding Overrange Detector
● Flexible Digital Filter: – Sinc + FIR + IIR (Selectable) – Linear or Minimum Phase Response – Programmable High-Pass Filter – Selectable FIR Data Rates: 250 SPS to 4 kSPS
● Offset and Gain Calibration Engine
● SYNC Input
● Analog Supply: 5 V or ±2.5 V
● Digital Supply: 1.8 V to 3.3 V 2
APPLICATIONS
● Energy Exploration● Seismic Monitoring
● High-Accuracy Instrumentation Simplified Schematic AVDD VREFN VREFP DVDD Input 1 Input 2 VCOM Mux PGA Overrange ADS1283 AVSS 4th-Order û Modulator Programmable Digital Filter Calibration Serial Interface DGND CCoonntrtorol l CLK CS SCLK DOUT DIN DRDY SYNC RESET PWDN 3
DESCRIPTION
The modulator digital output is digitally filtered and decimated by the onchip digital filter to yield the ADC conversion result.
