Overview
The ADS1283IRHFR from Texas Instruments is a high-performance, single-chip analog-to-digital converter (ADC) designed to meet the demanding requirements of various precision measurement applications. This ADC features an integrated, low-noise programmable gain amplifier (PGA) and a two-channel input multiplexer. It utilizes a fourth-order, inherently stable delta-sigma (ΔΣ) modulator, which provides exceptional noise and linearity performance. The device is particularly suited for applications such as seismic monitoring, energy exploration, and high-accuracy instrumentation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 31 Bits | |
| Data Rate (FIR Filter Mode) | 250 to 4000 SPS | |
| Data Rate (Sinc Filter Mode) | 8000 to 128,000 SPS | |
| Signal-to-Noise Ratio (SNR) | 120 to 124 dB | |
| Total Harmonic Distortion (THD) | -122 to -114 dB | |
| Power Consumption (PGA = 1, 2, 4, or 8) | 18 mW | |
| Shutdown Mode Power Consumption | 10 μW | |
| Analog Supply Voltage | 5 V or ±2.5 V | |
| Digital Supply Voltage | 1.8 V to 3.3 V | |
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | VQFN-24 (5 mm x 4 mm) |
Key Features
- Inherently stable, fourth-order delta-sigma (ΔΣ) modulator for outstanding noise and linearity performance.
- Integrated, low-noise programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, 16, 32, and 64.
- Two-channel input multiplexer with external and internal self-test input connections.
- Flexible digital filter with selectable Sinc, FIR, and IIR filters, and programmable high-pass filter.
- Offset and gain calibration engine for precise system calibration.
- Synchronization input (SYNC) for synchronizing multiple ADS1283 devices.
- Low power consumption with a shutdown mode for reduced power usage.
Applications
- Seismic monitoring equipment due to its high accuracy and stability.
- Energy exploration for precise measurement of seismic data.
- High-accuracy instrumentation in various industrial and scientific applications.
Q & A
- What is the resolution of the ADS1283IRHFR ADC?
The ADS1283IRHFR has a resolution of 31 bits.
- What are the available data rates for the ADS1283IRHFR?
The data rates range from 250 to 4000 SPS in FIR filter mode and from 8000 to 128,000 SPS in Sinc filter mode.
- What is the signal-to-noise ratio (SNR) of the ADS1283IRHFR?
The SNR is between 120 to 124 dB, depending on the PGA gain and data rate.
- How much power does the ADS1283IRHFR consume?
The device consumes 18 mW when the PGA is set to 1, 2, 4, or 8, and 10 μW in shutdown mode.
- What are the operating voltage ranges for the analog and digital supplies?
The analog supply voltage can be 5 V or ±2.5 V, and the digital supply voltage ranges from 1.8 V to 3.3 V.
- What is the operating temperature range of the ADS1283IRHFR?
The device operates within a temperature range of -40°C to +85°C.
- What type of package does the ADS1283IRHFR come in?
The device is packaged in a VQFN-24 package with dimensions of 5 mm x 4 mm.
- What are the key features of the integrated PGA?
The PGA has gains of 1, 2, 4, 8, 16, 32, and 64, and it features low noise and high input impedance.
- Can the ADS1283IRHFR be synchronized with other devices?
Yes, the device has a synchronization input (SYNC) for synchronizing multiple ADS1283 devices.
- What types of digital filters are available on the ADS1283IRHFR?
The device features selectable Sinc, FIR, and IIR filters, along with a programmable high-pass filter.
