Overview
The ADS1282IPWR, produced by Texas Instruments, is an extremely high-performance, single-chip analog-to-digital converter (ADC) designed to meet the demanding needs of energy exploration and seismic monitoring environments. It integrates a low-noise programmable gain amplifier (PGA) and a two-channel input multiplexer (mux). The converter utilizes a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator, providing outstanding noise and linearity performance. The device 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.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signal-to-Noise Ratio (SNR) | 130 dB | - |
| Total Harmonic Distortion (THD) | –122 dB | - |
| Integral Non-Linearity (INL) | 0.5 ppm | - |
| Noise of PGA | 5 nV/√Hz | - |
| Input Multiplexer | Two-channel | - |
| Digital Filter Data Rates | 250 to 4000 SPS | - |
| High-Pass Filter Corner Frequency | 0.1 to 10 Hz | - |
| Analog Supply | Unipolar (+5 V) or Bipolar (±2.5 V) | - |
| Digital Supply | 1.8 V to 3.3 V | - |
| Power Consumption | 25 mW (active), 10 µW (shutdown) | - |
| Package Type | TSSOP-28 | - |
| Operating Temperature Range | –40°C to +85°C (specified), up to +125°C (max) | - |
Key Features
- High-resolution ADC with 130-dB SNR at 250 SPS.
- High accuracy with THD of –122 dB and INL of 0.5 ppm.
- Low-noise PGA with 5 nV/√Hz noise and high input impedance.
- Two-channel input multiplexer with external input and internal self-test connections.
- Flexible digital filter with selectable data rates (250 to 4000 SPS), Sinc + FIR + IIR filters, and adjustable high-pass filter.
- Offset and gain calibration engine for system calibration.
- Synchronization input (SYNC) for synchronizing multiple ADS1282s and accepting an external clock input.
- Low power consumption of 25 mW in active mode and 10 µW in shutdown mode.
Applications
The ADS1282IPWR is particularly suited for demanding applications in energy exploration and seismic monitoring. Its high-performance characteristics make it ideal for use in:
- Seismic monitoring systems where high resolution and low noise are critical.
- Energy exploration equipment requiring precise and accurate data acquisition.
- Other industrial and scientific applications that demand high accuracy and low noise in analog-to-digital conversion).
Q & A
- What is the signal-to-noise ratio (SNR) of the ADS1282IPWR?
The SNR of the ADS1282IPWR is 130 dB at 250 SPS).
- What is the total harmonic distortion (THD) of the ADS1282IPWR?
The THD of the ADS1282IPWR is –122 dB).
- What is the integral non-linearity (INL) of the ADS1282IPWR?
The INL of the ADS1282IPWR is 0.5 ppm).
- What is the noise level of the PGA in the ADS1282IPWR?
The noise level of the PGA is 5 nV/√Hz).
- How many channels does the input multiplexer of the ADS1282IPWR have?
The input multiplexer has two channels).
- What are the selectable data rates for the digital filter in the ADS1282IPWR?
The digital filter has selectable data rates from 250 to 4000 SPS).
- What types of digital filters are available in the ADS1282IPWR?
The ADS1282IPWR features Sinc, FIR, and IIR digital filters).
- What is the power consumption of the ADS1282IPWR in active and shutdown modes?
The power consumption is 25 mW in active mode and 10 µW in shutdown mode).
- What is the operating temperature range of the ADS1282IPWR?
The operating temperature range is –40°C to +85°C (specified), with a maximum operating range to +125°C).
- What package type is the ADS1282IPWR available in?
The ADS1282IPWR is available in a TSSOP-28 package).
