Overview
The ADS1282IPWG4, 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. This ADC integrates a low-noise programmable gain amplifier (PGA) and a two-channel input multiplexer (mux). The device utilizes a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator to achieve outstanding noise and linearity performance.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 130-dB SNR (250 SPS) |
| THD | –122 dB |
| INL | 0.5 ppm |
| PGA Noise | 5 nV/√Hz |
| Input Type | Differential |
| Data Interface | SPI |
| Data Rates | 250 SPS to 4 kSPS |
| 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) |
| Operating Temperature Range | –40°C to +85°C (fully specified), up to +125°C (maximum) |
| Package | TSSOP-28 |
Key Features
- High Resolution: 130-dB SNR at 250 SPS
- High Accuracy: THD of –122 dB and INL of 0.5 ppm
- Low-Noise PGA: 5 nV/√Hz noise and high input impedance
- Two-Channel Input Mux: Additional external input and internal self-test connections
- Inherently-Stable Modulator: Fast responding overrange detection
- Flexible Digital Filter: Sinc, FIR, and IIR filters with selectable data rates and adjustable high-pass filter
- Filter Bypass Option: For use with post-processing filters
- Low Power Consumption: 25 mW active, 10 µW in shutdown
- Offset and Gain Calibration Engine: On-chip gain and offset scaling registers
- SYNC Input: For synchronizing multiple ADS1282s and accepting external clock input
Applications
The ADS1282IPWG4 is specifically designed for the demanding needs of energy exploration and seismic monitoring environments. Its high-performance characteristics make it ideal for applications requiring precise and reliable analog-to-digital conversion, such as:
- Seismic monitoring
- Energy exploration
- High-precision measurement systems
Q & A
- What is the resolution of the ADS1282IPWG4?
The ADS1282IPWG4 has a resolution of 130-dB SNR at 250 SPS.
- What is the THD and INL of the ADS1282IPWG4?
The THD is –122 dB, and the INL is 0.5 ppm.
- What type of PGA does the ADS1282IPWG4 have?
The ADS1282IPWG4 has a low-noise PGA with 5 nV/√Hz noise and high input impedance.
- What are the data rates supported by the ADS1282IPWG4?
The data rates range from 250 SPS to 4 kSPS.
- What is the power consumption of the ADS1282IPWG4?
The power consumption is 25 mW in active mode and 10 µW in shutdown mode.
- What is the operating temperature range of the ADS1282IPWG4?
The operating temperature range is –40°C to +85°C (fully specified), with a maximum operating range to +125°C.
- What package type is the ADS1282IPWG4 available in?
The ADS1282IPWG4 is available in a TSSOP-28 package.
- What are the primary applications of the ADS1282IPWG4?
The primary applications include seismic monitoring and energy exploration.
- Does the ADS1282IPWG4 support synchronization of multiple devices?
- Can the digital filter of the ADS1282IPWG4 be bypassed?
