Overview
The ADS1100A1IDBVTG4, produced by Texas Instruments, is a precision, continuously self-calibrating Analog-to-Digital (A/D) converter. This device features differential inputs and offers up to 16 bits of resolution, making it highly suitable for applications requiring high-accuracy measurements. The ADS1100 is packaged in a small SOT23-6 package, which is beneficial for space-constrained designs. It operates from a single power supply ranging from 2.7V to 5.5V and uses an I2C-compatible serial interface for communication. The onboard Programmable Gain Amplifier (PGA) allows for gains of up to 8, enabling the measurement of smaller signals with high resolution.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Power-Supply Voltage (VDD) | 2.7 | 5.5 | V | |
| Supply Current (Power Down) | 0.05 | 2 | µA | |
| Supply Current (Active Mode) | 90 | 150 | µA | |
| Power Dissipation (VDD = 5.0V) | 450 | 750 | µW | |
| Power Dissipation (VDD = 3.0V) | 210 | µW | ||
| Differential Input Impedance | 2.4/PGA | MΩ | ||
| Common-Mode Input Impedance | 8 | MΩ | ||
| Resolution and No Missing Codes | 12-16 | Bits | ||
| Data Rates | 8, 16, 32, 128 | SPS | ||
| PGA Gain Settings | 1, 2, 4, 8 |
Key Features
- Self-Calibration: The ADS1100 incorporates continuous self-calibration circuitry to compensate for gain and offset errors, ensuring high accuracy without user intervention.
- Programmable Gain Amplifier (PGA): Offers gains of up to 8, allowing for the measurement of smaller signals with high resolution.
- I2C Interface: Communicates through an I2C-compatible serial interface, supporting multiple devices and masters on a single bus.
- Low Power Consumption: Automatically powers down after a conversion in single-conversion mode, significantly reducing current consumption during idle periods.
- High Resolution: Provides up to 16 bits of resolution, making it suitable for high-accuracy measurement applications.
- Compact Package: Available in a small SOT23-6 package, ideal for space-constrained designs.
Applications
- Industrial Automation: Suitable for precision measurement in industrial automation systems where high accuracy and low power consumption are critical.
- Medical Devices: Used in medical devices requiring precise analog-to-digital conversion, such as patient monitoring systems and diagnostic equipment.
- Automotive Systems: Applied in automotive systems for sensor measurements, where reliability and accuracy are paramount.
- Consumer Electronics: Found in various consumer electronics that require high-resolution analog-to-digital conversion, such as smart home devices and wearables.
- Environmental Monitoring: Used in environmental monitoring systems to measure various physical parameters with high precision.
Q & A
- What is the resolution of the ADS1100?
The ADS1100 offers up to 16 bits of resolution.
- What are the available data rates for the ADS1100?
The ADS1100 can perform conversions at rates of 8, 16, 32, or 128 samples per second.
- What is the power supply range for the ADS1100?
The ADS1100 operates from a single power supply ranging from 2.7V to 5.5V.
- Does the ADS1100 have a built-in PGA?
- How does the ADS1100 communicate?
The ADS1100 communicates through an I2C-compatible serial interface.
- What is the typical supply current in active mode?
The typical supply current in active mode is between 90µA and 150µA.
- Does the ADS1100 support multiple I2C addresses?
- How does the self-calibration system work?
The self-calibration system operates continuously and compensates for gain and offset errors without user intervention.
- What is the typical power dissipation at VDD = 5.0V?
The typical power dissipation at VDD = 5.0V is between 450µW and 750µW.
- What is the operating temperature range of the ADS1100?
The ADS1100 operates over a temperature range of –40°C to +85°C.
