Overview
The ADS1118IDGST, produced by Texas Instruments, is a precision, low-power, 16-bit analog-to-digital converter (ADC) designed for power- and space-constrained sensor-measurement applications. This ultra-small device is available in either a leadless X2QFN-10 package or a VSSOP-10 package. It integrates a programmable gain amplifier (PGA), voltage reference, oscillator, and a high-accuracy temperature sensor. The ADS1118 is capable of performing conversions at data rates up to 860 samples per second (SPS) and operates over a wide power supply range from 2 V to 5.5 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Data Rate | 8 SPS to 860 SPS | |
| Number of Channels | 4 (single-ended or 2 differential) | |
| Supply Voltage Range | 2 V to 5.5 V | V |
| Current Consumption (Continuous Mode) | 150 µA | µA |
| Current Consumption (Single-Shot Mode) | Automatic Power Down | |
| Input Range (PGA) | ±256 mV to ±6.144 V | V |
| Temperature Sensor Accuracy | 0.5°C (Maximum) Error: 0°C to 70°C | °C |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | X2QFN-10 or VSSOP-10 | |
| Package Size (X2QFN) | 2 mm × 1.5 mm × 0.4 mm | mm |
Key Features
- Internal programmable gain amplifier (PGA) with input ranges from ±256 mV to ±6.144 V.
- Internal low-drift voltage reference and oscillator.
- High-accuracy temperature sensor for system-level temperature monitoring or cold-junction compensation for thermocouples.
- Four single-ended or two differential input channels.
- Single-cycle settling and programmable data rate from 8 SPS to 860 SPS.
- Low current consumption: 150 µA in continuous mode and automatic power down in single-shot mode.
- Data transfer via serial peripheral interface (SPI™).
Applications
- Temperature measurement: thermocouple measurement, cold-junction compensation, thermistor measurement.
- Portable instrumentation.
- Factory automation and process controls.
- Power- and space-constrained sensor-measurement applications.
Q & A
- What is the resolution of the ADS1118IDGST?
The ADS1118IDGST has a 16-bit resolution.
- What are the data rate options for the ADS1118IDGST?
The data rate can be programmed from 8 SPS to 860 SPS.
- How many input channels does the ADS1118IDGST have?
The device has four single-ended or two differential input channels.
- What is the supply voltage range for the ADS1118IDGST?
The supply voltage range is from 2 V to 5.5 V.
- How does the ADS1118IDGST manage power consumption?
The device consumes 150 µA in continuous mode and automatically powers down in single-shot mode to reduce current consumption during idle periods.
- What interface does the ADS1118IDGST use for data transfer?
Data is transferred through a serial peripheral interface (SPI™).
- What are the package options for the ADS1118IDGST?
The device is available in either a leadless X2QFN-10 package or a VSSOP-10 package.
- What is the operating temperature range of the ADS1118IDGST?
The operating temperature range is from –40°C to +125°C.
- What is the accuracy of the internal temperature sensor?
The internal temperature sensor has a maximum error of 0.5°C from 0°C to 70°C.
- What are some common applications for the ADS1118IDGST?
Common applications include temperature measurement, portable instrumentation, and factory automation and process controls.
