| System Features |
| 1. |
Supply Voltage: 3V ~ 5.5V |
| 2. |
Internal Programmable Gain Amplifier: 1x, 2x, 4x, 8x, 16x, 32x, 64x, 128x |
| 3. |
Selectable output Data Rate: 10Hz, 20Hz, 40Hz, 80Hz, 160Hz, 320Hz, 640Hz, 1280Hz |
| 4. |
Two-Wire Serial Digital Interface |
| 5. |
Power Down function |
| 6. |
Internal Oscillator |
| 7. |
Internal Temperature Sensor |
| 8. |
Package：SOP8 |
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| Applications |
| 1. |
Weigh Scales |
| 2. |
Load Cells |
| 3. |
Strain Gauge |
| 4. |
Instrumentation |
| 5. |
Precision Sensing |
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| General Description |
| 1. |
The PMD040 is a 24-bit Delta-Sigma A/D converter with a differential input channel. It includes programmable gain amplifier (PGA) functions, precision 24-bit delta sigma modulator, oscillator and temperature sensor. |
| 2. |
The PGA has a gain option of 1x, 2x, 4x, … , 64x, 128x. The delta-sigma ADC has 24-bit resolution and is
comprised of a 2nd order modulator and 3rd digital filter. The output data rate is selectable from 10Hz, 20Hz, 40Hz, …, to 1280Hz. |
| 3. |
The PMD040 can be controlled by MCU through 2 wire SPI interface. It also can be put in power down
mode to save power. |
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