Overview
The ADS1000, produced by Texas Instruments, is a low-power, 12-bit analog-to-digital converter (A/D) with an I2C-compatible serial interface. It is packaged in a tiny SOT-23-6 package, making it ideal for applications where space and power consumption are critical. The device operates from a single power supply ranging from 2.7V to 5.5V and features a programmable gain amplifier (PGA) with gains of 1, 2, 4, or 8. This allows for precise measurements of smaller signals with high resolution.
The ADS1000 performs conversions at a rate of 128 samples per second (SPS) and automatically powers down after a conversion in single-conversion mode, significantly reducing current consumption during idle periods.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power-Supply Voltage (VDD) | 2.7 | 5.5 | V | |
| Supply Current (Active) | 90 | 150 | μA | |
| Supply Current (Power-Down) | 0.05 | 2 | μA | |
| Resolution | 12 bits | |||
| Data Rate | 104 | 128 | 184 | SPS |
| Integral Nonlinearity (INL) | ±0.1 | 1 | LSB | |
| Offset Error | ±2 | LSB | ||
| Gain Error | 0.01 | 0.1 | % | |
| Operating Temperature | -40 | 125 | °C |
Key Features
- Low current consumption: Only 90μA in active mode and 0.05μA to 2μA in power-down mode.
- Integral Nonlinearity: ±1LSB max.
- Single-cycle conversion capability.
- Programmable Gain Amplifier (PGA) with gains of 1, 2, 4, or 8.
- I2C interface with two available addresses (1001000 or 1001001).
- Pin- and software-compatible with the 16-bit ADS1100.
- Operating voltage range: 2.7V to 5.5V.
- High-speed I2C mode compatible up to 3.4MHz.
Applications
- Portable instrumentation.
- Consumer goods.
- Voltage monitoring.
- Battery management.
- Industrial process control.
- Temperature measurement.
Q & A
- What is the resolution of the ADS1000?
The ADS1000 has a resolution of 12 bits.
- What is the data rate of the ADS1000?
The ADS1000 can perform conversions at a rate of 104 to 184 samples per second (SPS), with a typical rate of 128 SPS.
- What are the available gains for the PGA in the ADS1000?
The Programmable Gain Amplifier (PGA) in the ADS1000 offers gains of 1, 2, 4, or 8.
- What is the operating voltage range of the ADS1000?
The ADS1000 operates from a single power supply ranging from 2.7V to 5.5V.
- How does the ADS1000 manage power consumption?
The ADS1000 automatically powers down after a conversion in single-conversion mode, significantly reducing current consumption during idle periods.
- Is the ADS1000 compatible with high-speed I2C mode?
Yes, the ADS1000 is fully compatible with high-speed I2C mode up to 3.4MHz.
- What are the typical applications of the ADS1000?
Typical applications include portable instrumentation, consumer goods, voltage monitoring, battery management, industrial process control, and temperature measurement.
- How does the ADS1000 handle single-ended input signals?
The ADS1000 can easily measure single-ended signals by grounding either of its input pins (usually VIN–) and applying the input signal to VIN+.
- What is the package type of the ADS1000?
The ADS1000 is packaged in a tiny SOT-23-6 package.
- Is the ADS1000 pin- and software-compatible with other models?
Yes, the ADS1000 is pin- and software-compatible with the 16-bit ADS1100.
