Overview
The ADS1258MPHPTEP, produced by Texas Instruments, is a 16-channel (multiplexed), low-noise, 24-bit delta-sigma analog-to-digital converter (ADC). This device is designed to provide single-cycle settled data at channel scan rates ranging from 1.8 kSPS to 23.7 kSPS per channel. It features a flexible input multiplexer that can accept combinations of eight differential or 16 single-ended inputs, with a full-scale differential range of 5 V or a true bipolar range of ±2.5 V when operating with a 5-V reference. The ADS1258 is optimized for low-noise performance, making it suitable for various high-precision applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Number of Channels | 16 (multiplexed) |
| Data Rate (Fixed Channel) | 125 kSPS |
| Data Rate (Auto-Scan) | 23.7 kSPS/Channel |
| Input Type | 16 Single-Ended or 8 Differential |
| Input Range | Unipolar (5 V) or Bipolar (±2.5 V) |
| Noise | 2.8 µV RMS at 1.8 kSPS |
| Integral Nonlinearity | 0.0003% |
| Offset Drift | 0.02 µV/°C |
| Gain Drift | 0.4 ppm/°C |
| Operating Temperature Range | -40°C to 105°C |
| Package | QFN-48 or QFP-48 |
| Analog Supply Voltage | Unipolar +5 V or Bipolar ±2.5 V |
| Digital Supply Voltage | 2.7 V to 5.25 V |
| Power Dissipation | 42 mW |
Key Features
- Fixed-Channel or Automatic Channel Scan
- Single-Conversion Settled Data
- Low Noise: 2.8 µV RMS at 1.8 kSPS
- Open-Sensor Detection
- Conversion Control Pin
- Multiplexer Output for External Signal Conditioning
- On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
- Standby, Sleep, and Power-Down Modes
- 8 General-Purpose Inputs/Outputs (GPIO)
- 32.768-kHz Crystal Oscillator or External Clock
- Programmable Sensor Bias Current Sources
- SPI™-compatible Interface
Applications
- Medical
- Avionics
- Process Control
- Machine and System Monitoring
- Fast Scan Multi-Channel Instrumentation
- Industrial Systems
- Test and Measurement Systems
Q & A
- What is the resolution of the ADS1258MPHPTEP?
The ADS1258MPHPTEP has a resolution of 24 bits. - How many channels does the ADS1258MPHPTEP support?
The device supports 16 channels (multiplexed). - What are the data rates for fixed-channel and auto-scan modes?
The fixed-channel data rate is 125 kSPS, and the auto-scan data rate is 23.7 kSPS per channel. - What types of inputs can the ADS1258MPHPTEP accept?
The device can accept 16 single-ended or 8 differential inputs. - What is the noise performance of the ADS1258MPHPTEP?
The noise performance is 2.8 µV RMS at 1.8 kSPS. - What is the integral nonlinearity of the ADS1258MPHPTEP?
The integral nonlinearity is 0.0003%. - What are the operating temperature ranges for the ADS1258MPHPTEP?
The operating temperature range is -40°C to 105°C. - What packages are available for the ADS1258MPHPTEP?
The device is available in QFN-48 and QFP-48 packages. - What are the power supply requirements for the ADS1258MPHPTEP?
The analog supply voltage can be unipolar +5 V or bipolar ±2.5 V, and the digital supply voltage ranges from 2.7 V to 5.25 V. - Does the ADS1258MPHPTEP support external clock sources?
Yes, the device supports a 32.768-kHz crystal oscillator or an external clock source.
