Overview
The ADS1158IRTCR, produced by Texas Instruments, is a 16-channel (multiplexed), low-noise, 16-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). This device is designed to provide single-cycle settled data and is suitable for a wide range of applications requiring high precision and low noise. The ADS1158 operates with either a unipolar (+5V) or bipolar (±2.5V) analog supply and supports digital supply voltages from 2.7V to 5.25V. It features a flexible input multiplexer that can accept combinations of eight differential or 16 single-ended inputs, making it versatile for various measurement tasks.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | - |
| Number of Channels | 16 (multiplexed) | - |
| Fixed-Channel Data Rate | 1.953 to 125 kSPS | kSPS |
| Auto-Scan Data Rate | 1.805 to 23.739 kSPS/Channel | kSPS/Channel |
| Integral Nonlinearity (INL) | 0.3 LSB | LSB |
| Offset Error | -1 to 0.5 LSB | LSB |
| Gain Error | 0.1 to 0.5 % | % |
| Gain Drift | 2 ppm/°C | ppm/°C |
| Noise | 0.6 LSB (PP) | LSB |
| Analog Supply Voltage | +5V or ±2.5V | V |
| Digital Supply Voltage | 2.7V to 5.25V | V |
| Operating Temperature Range | -40 to +105 °C | °C |
| Package Type | QFN-48 | - |
Key Features
- 16 Bits, No Missing Codes
- Fixed-Channel or Automatic Channel Scan
- Single-Conversion Settled Data
- 16 Single-Ended or 8 Differential Inputs
- Unipolar (+5V) or Bipolar (±2.5V) Operation
- DC Stability: 1µV/°C Offset Drift, 2ppm/°C Gain Drift
- Open-Sensor Detection
- Conversion Control Pin
- Multiplexer Output for External Signal Conditioning
- On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
- 42mW Power Dissipation
- Standby, Sleep, and Power-Down Modes
- 32.768kHz Crystal Oscillator or External Clock
- SPI™-compatible interface
Applications
- Medical Systems
- 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 ADS1158IRTCR?
The ADS1158IRTCR has a resolution of 16 bits with no missing codes.
- How many channels does the ADS1158IRTCR support?
The device supports 16 channels, which can be configured as either single-ended or differential inputs.
- What are the data rates for the fixed-channel and auto-scan modes?
The fixed-channel data rate ranges from 1.953 to 125 kSPS, while the auto-scan data rate ranges from 1.805 to 23.739 kSPS per channel.
- What is the operating temperature range of the ADS1158IRTCR?
The operating temperature range is -40 to +105 °C.
- What types of analog supply voltages does the ADS1158IRTCR support?
The device supports both unipolar (+5V) and bipolar (±2.5V) analog supply voltages.
- What is the power dissipation of the ADS1158IRTCR?
The power dissipation is approximately 42mW.
- Does the ADS1158IRTCR have general-purpose inputs/outputs?
Yes, it has eight general-purpose inputs/outputs (GPIO).
- What type of interface does the ADS1158IRTCR use for digital communication?
The device uses an SPI™-compatible interface for digital communication.
- Can the ADS1158IRTCR be used in medical applications?
Yes, it is suitable for medical applications due to its high precision and low noise characteristics.
- Does the ADS1158IRTCR have built-in temperature sensing capabilities?
Yes, it has on-chip temperature readback capabilities.
