Overview
The ADS1259, including the ADS1259BIPWR package variant, is a high-linearity, low-drift, 24-bit analog-to-digital converter (ADC) designed by Texas Instruments. This device is tailored for the needs of industrial process control, precision instrumentation, and other exacting applications. It offers high-resolution output data at sample rates ranging from 10 SPS to 14.4 kSPS. The ADS1259 integrates a low-noise, low-drift 2.5V reference and features a programmable digital filter, which includes a fifth-order sinc filter followed by a programmable averager. The device operates with either an internal oscillator, an external crystal, or an external clock as the clock source and supports SPI-compatible interface for data and control communication.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Resolution | 24 | 24 | 24 | Bits |
| Output Data Rates | 10 | - | 14.4 kSPS | SPS |
| Analog Supply | +2.5V or ±2.5V | - | - | V |
| Digital Supply | 2.7V | - | 5V | V |
| Power Consumption | - | 13 mW | - | mW |
| Operating Temperature Range | -40°C | - | +105°C | °C |
| Integral Nonlinearity (INL) | - | 0.4 ppm | - | ppm |
| Reference Voltage | - | 2.5V | - | V |
| Reference Drift | - | 2 ppm/°C | - | ppm/°C |
Key Features
- High-linearity, low-drift 24-bit ADC with no missing codes.
- Output data rates from 10 SPS to 14.4 kSPS.
- Integrated low-noise, low-drift 2.5V reference.
- Programmable digital filter with sinc1 or sinc2 averaging modes.
- SPI-compatible interface for data and control communication.
- Low power consumption: 13 mW in operation and less than 25 μW in power-down mode.
- Operating range: –40°C to +105°C.
- Available in TSSOP-20 package.
- Onboard oscillator or external crystal/clock options.
- Data integrity features including data bytes checksum and redundant data read capability.
Applications
- Industrial Process Control
- Scientific Instrumentation
- Test and Measurement
- Precision Instrumentation
Q & A
- What is the resolution of the ADS1259 ADC?
The ADS1259 has a 24-bit resolution with no missing codes.
- What are the output data rates of the ADS1259?
The output data rates range from 10 SPS to 14.4 kSPS.
- What type of reference does the ADS1259 integrate?
The ADS1259 integrates a low-noise, low-drift 2.5V reference.
- What interface does the ADS1259 use for data and control communication?
The ADS1259 uses a SPI-compatible interface.
- How much power does the ADS1259 consume in operation and power-down modes?
The device consumes 13 mW in operation and less than 25 μW in power-down mode.
- What is the operating temperature range of the ADS1259?
The operating temperature range is from –40°C to +105°C.
- In what package is the ADS1259 available?
The ADS1259 is available in a TSSOP-20 package.
- What are the clock source options for the ADS1259?
The device can use an onboard oscillator, an external crystal, or an external clock as the clock source.
- What features ensure data integrity in the ADS1259?
Data integrity is ensured by data bytes checksum and redundant data read capability.
- What are some typical applications of the ADS1259?
Typical applications include industrial process control, scientific instrumentation, test and measurement, and precision instrumentation.
