Support software
ADS1118-C-EXAMPLE-CODE — ADS1118 example C code
Expedite your embedded design using this example C code for the ADS1118
ADS1118-Q1
Automotive 16-bit, 860-SPS, 4-ch, delta-sigma ADC with PGA, oscillator, VREF, temp sensor and SPI
Data sheet
ADS1118-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Wide supply range: 2 V to 5.5 V
- Low current consumption:
- Continuous mode: only 150 µA
- Single-shot mode: automatic power-down
- Programmable data rate: 8 SPS to 860 SPS
- Single-cycle settling
- Internal low-drift voltage reference
- Internal temperature sensor:
2°C (maximum) error - Internal oscillator
- Internal PGA
- Four single-ended or two differential inputs
The ADS1118-Q1 is a precision, low power, 16-bit analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals. The ADS1118-Q1 integrates a programmable gain amplifier (PGA), voltage reference, oscillator, and high-accuracy temperature sensor. These features, along with a wide power-supply range from 2 V to 5.5 V, make the
ADS1118-Q1 ideally suited for power- and space-constrained, sensor-measurement applications.
The ADS1118-Q1 performs conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing both large and small signals to be measured with high resolution. An input multiplexer (mux) allows measurement of two differential or four single-ended inputs. The high-accuracy temperature sensor is used for system-level temperature monitoring, or cold-junction compensation for thermocouples.
The ADS1118-Q1 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI™). The ADS1118-Q1 is specified from –40°C to +125°C.
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Technical documentation
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View all 8 | Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | ADS1118-Q1 Automotive, Low-Power, SPI-Compatible, 16-Bit Analog-to-Digital Converter With Internal Reference and Temperature Sensor datasheet (Rev. B) | PDF | HTML | 15 May 2020 |
| Circuit design | Precision measurement circuit with 8 different channels and SPI (Rev. A) | PDF | HTML | 19 Sep 2024 | |
| Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 18 Mar 2024 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 19 Jun 2020 | ||
| Functional safety information | ADS1118-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA | 11 Mar 2020 | ||
| Analog Design Journal | How delta-sigma ADCs work, Part 1 (Rev. A) | 19 Sep 2016 | ||
| Analog Design Journal | How delta-sigma ADCs work, Part 2 | 09 Nov 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
ADS1118EVM — ADS1118 16-bit, 860-SPS, 4-channel, delta-sigma ADC evaluation module
The ADS1118 evaluation module (EVM) is a complete solution for evaluation of the ADS1118 ultra-small, low-power, precision 16-bit analog-to-digital converter (ADC). Power and I/O are provided via USB connection and a simple software interface. Analog inputs can be connected to a terminal block (...)
User guide: PDF
Calculation tool
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Simulation tool
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Simulation tool
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Reference designs
TIDA-01235 — Automotive High Temperature Sensor (HTS) Reference Design
The main focus of the TIDA-01235 reference design is to provide a high density, low cost, and good accuracy thermocouple analog front end. The protection strategies involved in the design protect the analog front end from coupling transients. This design meets the requirements of (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGS) | 10 | Ultra Librarian |
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