Description
The ADS1230 is a precision 20-bit analog-to-digital converter (ADC). With an onboard low-noise programmable gain amplifier (PGA), onboard oscillator, and precision 20-bit delta-sigma ADC, the ADS1230 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and pressure sensors.
The low-noise PGA has a gain of 64 or 128, supporting a full-scale differential input of ±39mV or ±19.5mV, respectively. The delta-sigma ADC has 20-bit effective resolution and is comprised of a 3rd-order modulator and 4th-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1230 can be clocked by the internal oscillator or an external clock source.
View full Description in Datasheet
Features
- Complete Front-End for Bridge Sensor
- Onboard PGA with Gain of 64 or 128
- Onboard Oscillator
- RMS Noise:
40nV at 10SPS (G = 128)
88nV at 80SPS (G = 128)
- 18-Bit Noise-Free Resolution
- Selectable 10SPS or 80SPS Data Rates
- Simultaneous 50Hz and 60Hz Rejection at 10SPS
- External Voltage Reference up to 5V for Ratiometric Measurements
- Simple, Pin-Driven Control
- Two-Wire Serial Digital Interface
- Tiny 16-pin TSSOP Package
- Supply Range: 2.7V to 5.3V
- -40°C to +85°C Temperature Range
- APPLICATIONS
- Weigh Scales
- Strain Gauges
- Pressure Sensors
- Industrial Process Control
All trademarks are the property of their respective owners.
Parametrics
| |
ADS1130 |
ADS1131 |
ADS1230 |
ADS1231 |
ADS1232 |
ADS1234 |
| Resolution(Bits) |
18 |
18 |
20 |
24 |
24 |
24 |
| Sample Rate (max) |
80SPS |
80SPS |
80SPS |
80SPS |
80SPS |
80SPS |
| # Input Channels |
1 |
1 |
1 |
1 |
2 |
4 |
| Interface |
Serial SPI Interface |
Serial |
Serial SPI Interface |
SPI |
Serial SPI Interface |
Serial SPI Interface |
| INL(Max)(+/-LSB) |
0.0006 |
|
|
|
|
|
| INL (+/-)(Max)(%) |
0.00001 |
0.0008 |
|
|
|
|
| Power Consumption(Typ)(mW) |
2.9 |
5 |
2.9 |
5 |
4.3 |
4.3 |
| Architecture |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
Delta-Sigma |
| Analog Voltage AV/DD(Min)(V) |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
| Analog Voltage AV/DD(Max)(V) |
5.3 |
5.3 |
2.3 |
5.3 |
5.3 |
5.3 |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 85 |
-40 to 105 |
-40 to 105 |
| Digital Supply(Min)(V) |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
| Digital Supply(Max)(V) |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
|
