Overview
The ADS1230IPWG4, produced by Texas Instruments, is a precision 20-bit analog-to-digital converter (ADC) designed specifically for bridge sensor applications. This component integrates a low-noise programmable gain amplifier (PGA), an internal oscillator, and a 20-bit delta-sigma ADC. It provides a complete front-end solution for applications such as weigh scales, strain gauges, and pressure sensors. The ADS1230IPWG4 is known for its high resolution and low noise performance, making it suitable for precise measurement tasks.
Key Specifications
| Parameter | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Resolution | 20 | Bits | |||
| Full-Scale Input Voltage | Gain = 64 | ±0.5VREF/PGA | V | ||
| Full-Scale Input Voltage | Gain = 128 | ±0.5VREF/PGA | V | ||
| RMS Noise | 10SPS, Gain = 128 | 40nV | |||
| RMS Noise | 80SPS, Gain = 128 | 88nV | |||
| Data Rates | 10SPS, 80SPS | SPS | |||
| Power Supply Voltage | 2.7 | 5.3 | V | ||
| Normal Mode Current (AVDD = 3V) | 900 | 1400 | μA | ||
| Normal Mode Current (AVDD = 5V) | 900 | 1400 | μA | ||
| Temperature Range | –40°C | +85°C | °C | ||
| Package Type | TSSOP-16 |
Key Features
- Onboard PGA with Gain of 64 or 128: Supports full-scale differential input of ±39mV or ±19.5mV, respectively.
- Internal Oscillator: Can be clocked by the internal oscillator or an external clock source.
- 20-Bit Delta-Sigma ADC: Comprised of a 3rd-order modulator and 4th-order digital filter, providing 20-bit effective resolution.
- Selectable Data Rates: Supports 10SPS and 80SPS data rates with excellent 50Hz and 60Hz rejection at 10SPS.
- External Voltage Reference: Up to 5V for ratiometric measurements.
- Simple, Pin-Driven Control: No digital registers to program; all features controlled by dedicated pins.
- Two-Wire Serial Digital Interface: Easily-isolated serial interface connects directly to microcontrollers like the MSP430.
- Low-Power Modes: Standby mode and power-down mode for reduced power consumption.
- Tiny 16-pin TSSOP Package: Compact design suitable for various applications.
Applications
- Weigh Scales: Precise weight measurement.
- Strain Gauges: Measurement of strain and deformation.
- Pressure Sensors: Accurate pressure measurement.
- Industrial Process Control: Monitoring and control in industrial processes.
Q & A
- What is the resolution of the ADS1230IPWG4?
The ADS1230IPWG4 has a 20-bit resolution.
- What are the available gain settings for the PGA?
The PGA has gain settings of 64 or 128.
- What are the supported data rates for the ADS1230IPWG4?
The supported data rates are 10SPS and 80SPS.
- How is the clocking for the ADS1230IPWG4 provided?
The clocking can be provided by an internal oscillator or an external clock source.
- What is the power supply voltage range for the ADS1230IPWG4?
The power supply voltage range is from 2.7V to 5.3V.
- What is the temperature range for the ADS1230IPWG4?
The temperature range is from –40°C to +85°C.
- What type of package does the ADS1230IPWG4 come in?
The ADS1230IPWG4 comes in a 16-pin TSSOP package.
- How is data retrieval accomplished in the ADS1230IPWG4?
Data retrieval is accomplished through a two-wire serial digital interface.
- Does the ADS1230IPWG4 have low-power modes?
Yes, it has standby mode and power-down mode for reduced power consumption.
- What are some common applications of the ADS1230IPWG4?
Common applications include weigh scales, strain gauges, pressure sensors, and industrial process control.
