Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Architecture | Delta-sigma ADC with differential input |
| Resolution / Rate | 12 to 16 bits depending on selected rate; 8, 16, 32 or 128 SPS |
| PGA | Programmable gain 1, 2, 4 or 8 |
| Reference | Conversions are ratiometric to VDD; no separate internal precision reference |
| Supply | 2.7 V to 5.5 V |
| Interface | I²C-compatible; A0 order code uses the 000 address option |
| Power | Single-conversion mode automatically powers down after conversion |
| Exact Package / Packing | SOT-23-6 (DBV); 3000-piece tape and reel |
Product Overview
ADS1100A0IDBVR is a tiny differential delta-sigma ADC for slow precision measurements where board area and power matter more than throughput. Its selectable data rate changes effective resolution, reaching 16-bit output at the lowest conversion rate.
Unlike ADS1110, the ADS1100 uses the supply as its conversion reference. That makes ratiometric bridge or sensor measurements attractive when the sensor excitation comes from the same rail, but it also means VDD quality directly affects absolute-voltage accuracy.
The A0 suffix is part of the exact I²C-address identity and the DBVR suffix selects the 3000-piece SOT-23 reel. A system using several fixed-address variants must retain that order-code distinction in both firmware and purchasing.
For related devices, see HKEQGOO’s ADCs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | ADS1100A0IDBVR |
| Architecture | Delta-sigma ADC with differential input |
| Resolution / Rate | 12 to 16 bits depending on selected rate; 8, 16, 32 or 128 SPS |
| PGA | Programmable gain 1, 2, 4 or 8 |
| Reference | Conversions are ratiometric to VDD; no separate internal precision reference |
| Supply | 2.7 V to 5.5 V |
| Interface | I²C-compatible; A0 order code uses the 000 address option |
| Power | Single-conversion mode automatically powers down after conversion |
| Exact Package / Packing | SOT-23-6 (DBV); 3000-piece tape and reel |
| Manufacturer Status | Active / Production |
| Part Marking | AD0 |
Functional Highlights
Supply-ratiometric conversion can cancel excitation drift
When both sensor excitation and ADC reference track VDD, supply changes can largely divide out of the ratio measurement. The same architecture is less attractive when the goal is an absolute voltage independent of supply.
Rate selection is also a resolution/noise decision
The 128-SPS mode is faster but provides fewer effective output bits than the slowest mode; firmware should choose conversion speed from the sensor bandwidth and noise target.
Design Considerations
- Treat VDD as an analog reference rail when measuring absolute voltage.
- Check source impedance against the switched-capacitor input impedance, especially at higher PGA settings.
- Keep the fixed A0 I²C address in the BOM/firmware mapping.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists ADS1100A0IDBVR as Active orderable ADS1100A0IDBVR; SOT23-6 DBV; 3000-piece tape and reel; marking AD0; industrial order-code range listed by TI.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
