Overview
The Texas Instruments ADS1259IPW is a high-linearity, low-drift, 24-bit analog-to-digital converter (ADC) designed to meet the stringent requirements of industrial process control, precision instrumentation, and other exacting applications. This ADC utilizes a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator to provide outstanding noise and linearity performance. When combined with a signal amplifier, such as the PGA280, it forms a high-resolution, high-accuracy measurement system capable of digitizing a wide range of signals.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 24 bits, No Missing Codes |
| Output Data Rates | 10 to 14 kSPS (including 10 SPS, 50 SPS, 60 SPS) |
| Integral Non-Linearity (INL) | 0.4 ppm |
| Reference Drift | 2 ppm/°C |
| Gain Drift | 0.5 ppm/°C |
| Offset Drift | 0.05 µV/°C |
| Noise | 0.7 µV RMS at 60 SPS |
| Line-Cycle Rejection | Simultaneous 50/60 Hz rejection at 10 SPS |
| Settling Mode | Single-cycle settling or high line-cycle rejection mode |
| Internal Oscillator | On-chip oscillator, external crystal, or external clock |
| Analog Supply | +5V or ±2.5V |
| Digital Supply | +2.7V to +5V |
| Power Consumption | 13 mW (active), < 25 µW (power-down) |
| Package | 20-TSSOP (0.173, 4.40mm Width) |
| Operating Temperature Range | -40°C to +105°C |
Key Features
- High performance with low drift and high linearity
- Programmable output data rates up to 14 kSPS
- Simultaneous 50/60 Hz rejection at 10 SPS
- Single-cycle settling and high line-cycle rejection modes
- Integrated low-noise, very low drift 2.5V reference
- Internal oscillator, external crystal, or external clock options
- Out-of-range detection and readback data integrity by checksum and redundant data read capability
- SPI-compatible interface with a minimum of three wires
- Low power consumption: 13 mW active, < 25 µW power-down
Applications
- Industrial Process Control
- Scientific Instrumentation
- Test and Measurement
Q & A
- What is the resolution of the ADS1259IPW ADC?
The ADS1259IPW has a 24-bit resolution with no missing codes. - What are the output data rates of the ADS1259IPW?
The output data rates range from 10 to 14 kSPS, including specific rates of 10 SPS, 50 SPS, and 60 SPS. - What is the Integral Non-Linearity (INL) of the ADS1259IPW?
The INL is 0.4 ppm. - How does the ADS1259IPW handle line-cycle rejection?
The ADC provides simultaneous 50/60 Hz rejection at 10 SPS. - What are the power supply options for the ADS1259IPW?
The analog supply can be +5V or ±2.5V, and the digital supply can be +2.7V to +5V. - What is the power consumption of the ADS1259IPW?
The ADC consumes 13 mW when active and less than 25 µW when in power-down mode. - What package type is the ADS1259IPW available in?
The ADS1259IPW is available in a 20-TSSOP package. - What is the operating temperature range of the ADS1259IPW?
The operating temperature range is -40°C to +105°C. - Does the ADS1259IPW have an integrated oscillator?
Yes, it has an on-chip oscillator, and it also supports external crystal or external clock options. - How is data integrity ensured in the ADS1259IPW?
Data integrity is ensured by checksum and redundant data read capability.
