Overview
The ADS1258IPHPREP, produced by Texas Instruments, is a 16-channel, low-noise, 24-bit delta-sigma analog-to-digital converter (ADC). This device is designed to provide high-precision conversions with single-cycle settled data at various channel scan rates. 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 ADC is optimized for low-noise performance and includes internal system monitor registers for supply voltage, temperature, reference voltage, gain, and offset data.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 16 |
| Resolution | 24 Bits |
| Sample Rate | Up to 125 kSPS (fixed-channel), 23.7 kSPS/channel (auto-scan) |
| Input Type | Single-ended or 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 |
| Power Dissipation | 42 mW |
| Operating Temperature Range | -40°C to 105°C (industrial), -55°C to 125°C (military) |
| Package | HTQFP-48 (7x7) |
| Supply Voltage | Unipolar 5 V or bipolar ±2.5 V (analog), 2.7 V to 5.25 V (digital) |
Key Features
- 24 Bits, No Missing Codes
- 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
Applications
- Medical Devices
- 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 ADS1258IPHPREP ADC?
The ADS1258IPHPREP has a resolution of 24 bits. - What are the sample rates for the ADS1258IPHPREP?
The sample rates are up to 125 kSPS for fixed-channel and 23.7 kSPS/channel for auto-scan. - What types of inputs does the ADS1258IPHPREP support?
The device supports both single-ended and differential inputs. - What is the noise performance of the ADS1258IPHPREP?
The noise performance is 2.8 µV RMS at 1.8 kSPS. - Does the ADS1258IPHPREP have on-chip temperature monitoring?
Yes, it includes on-chip temperature, reference, offset, gain, and supply voltage readback. - What are the power modes available for the ADS1258IPHPREP?
The device has standby, sleep, and power-down modes. - Can the ADS1258IPHPREP be used in industrial and military applications?
Yes, it is available in both industrial (-40°C to 105°C) and military (-55°C to 125°C) temperature ranges. - What is the package type of the ADS1258IPHPREP?
The package type is HTQFP-48 (7x7). - Does the ADS1258IPHPREP support external clock sources?
Yes, it can use a 32.768-kHz crystal oscillator or an external clock source. - What is the typical power dissipation of the ADS1258IPHPREP?
The typical power dissipation is 42 mW.
