The ADS1203 is a delta-sigma (
) modulator with a 95dB dynamic range, operating from a single +5V supply. The differential inputs are ideal for direct connection to transducers or low-level signals. With the appropriate digital filter and modulator rate, the device can be used to achieve 16-bit analog-to-digital (A/D) conversion with no missing codes. An effective resolution of 14 bits or SNR of 85dB (typical) can be maintained with a digital filter bandwidth of 40kHz at a modulator rate of 10MHz. The ADS1203 is designed for use in medium- to high-resolution measurement applications including current measurements, smart transmitters, and industrial process control. The ADS1203 is available in TSSOP-8 and QFN-16 (3x3) packages.
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| Resolution (Bits) | 16 |
| Number of input channels | 1 |
| Interface type | Serial |
| Architecture | Delta-Sigma Modulator |
| Input type | Differential |
| Rating | Catalog |
| Reference mode | External, Internal |
| Input voltage range (max) (V) | 0.25 |
| Input voltage range (min) (V) | -0.25 |
| Features | Oscillator, Small Size |
| Operating temperature range (°C) | -40 to 125 |
| Power consumption (typ) (mW) | 33 |
| Analog supply (min) (V) | 4.5 |
| Analog supply voltage (max) (V) | 5.5 |
| SNR (dB) | 85 |
| Digital supply (min) (V) | 2.7 |
| Digital supply (max) (V) | 5.5 |
| TSSOP (PW) | 8 | 19.2 mm² 3 x 6.4 |
| VQFN (RGT) | 16 | 9 mm² 3 x 3 |
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