Overview
The ADS1118-Q1, produced by Texas Instruments, is a precision, low-power, 16-bit analog-to-digital converter (ADC) designed to measure common sensor signals with high accuracy. This device is AEC-Q100 qualified for automotive applications and operates over a wide temperature range from –40°C to +125°C. It integrates a programmable gain amplifier (PGA), a low-drift voltage reference, an internal oscillator, and a high-accuracy temperature sensor. These features make the ADS1118-Q1 ideal for power- and space-constrained sensor-measurement applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Maximum Sample Rate | 860 SPS | |
| Input Channels | 4 single-ended or 2 differential | |
| Power Supply Range | 2 V to 5.5 V | V |
| Current Consumption (Continuous Mode) | 150 μA | μA |
| Current Consumption (Single-Shot Mode) | Automatic power-down | |
| PGA Input Ranges | ±256 mV to ±6.144 V | V |
| Temperature Sensor Accuracy | ±2°C (maximum error) | °C |
| Operating Temperature Range | –40°C to +125°C | °C |
| Interface | SPI (Serial Peripheral Interface) | |
| Package Type | 10-Pin VSSOP |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to +125°C.
- Functional Safety-Capable with documentation available to aid in functional safety system design.
- Wide power-supply range from 2 V to 5.5 V.
- Low current consumption: 150 μA in continuous mode and automatic power-down in single-shot mode.
- Programmable data rate from 8 SPS to 860 SPS.
- Single-cycle settling.
- Internal low-drift voltage reference.
- Internal high-accuracy temperature sensor with ±2°C maximum error.
- Internal oscillator.
- Internal PGA with input ranges from ±256 mV to ±6.144 V.
- Four single-ended or two differential inputs.
Applications
- Battery management systems.
- Automotive sensors, including thermocouples, resistance temperature detectors (RTDs), pressure and strain gauge sensors, and electrochemical gas sensors.
- Particulate matter sensors.
Q & A
- What is the resolution of the ADS1118-Q1 ADC? The ADS1118-Q1 has a resolution of 16 bits.
- What is the maximum sample rate of the ADS1118-Q1? The maximum sample rate is 860 samples per second (SPS).
- How many input channels does the ADS1118-Q1 support? It supports four single-ended or two differential input channels.
- What is the power supply range for the ADS1118-Q1? The power supply range is from 2 V to 5.5 V.
- What is the current consumption in continuous mode? The current consumption in continuous mode is 150 μA.
- Does the ADS1118-Q1 have an internal temperature sensor? Yes, it has an internal high-accuracy temperature sensor with a maximum error of ±2°C.
- What interface does the ADS1118-Q1 use for data transfer? The ADS1118-Q1 uses a Serial Peripheral Interface (SPI).
- What are the operating temperature ranges for the ADS1118-Q1? The operating temperature range is from –40°C to +125°C.
- Is the ADS1118-Q1 suitable for automotive applications? Yes, it is AEC-Q100 qualified for automotive applications.
- What is the package type of the ADS1118-Q1? The package type is a 10-Pin VSSOP.
