Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Resolution / Rate | 24-bit delta-sigma; up to 2 kSPS |
| Inputs | 4-channel precision sensor input mux |
| PGA | Integrated low-noise programmable gain amplifier |
| Reference | Integrated precision reference plus external-reference options |
| Excitation | Two programmable current DACs for sensor excitation |
| Diagnostics | Burnout detection / system-monitor functions in family architecture |
| Interface | SPI with data-ready/control pins |
| Exact Package / Packing | TSSOP (PW), 20 pins; 2000-piece large reel; marking ADS1247 |
Product Overview
ADS1247IPWR is a higher-integration precision sensor ADC aimed at RTD, thermocouple, bridge and industrial process inputs. It combines a 24-bit modulator/filter with PGA, reference routing and two excitation-current DACs so multiple sensor types can share one analog front end.
Its value is system integration as much as nominal resolution: excitation current, reference routing, burnout checks and sensor bias functions reduce the external precision components needed around field inputs.
The four-channel ADS1247 sits between simpler compact sensor ADCs and the larger ADS1248 family variant. The exact PWR order code is the active 20-pin TSSOP, 2000-piece reel, with TI addendum temperature range to +105°C.
For related devices, see HKEQGOO’s ADCs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | ADS1247IPWR |
| Resolution / Rate | 24-bit delta-sigma; up to 2 kSPS |
| Inputs | 4-channel precision sensor input mux |
| PGA | Integrated low-noise programmable gain amplifier |
| Reference | Integrated precision reference plus external-reference options |
| Excitation | Two programmable current DACs for sensor excitation |
| Diagnostics | Burnout detection / system-monitor functions in family architecture |
| Interface | SPI with data-ready/control pins |
| Exact Package / Packing | TSSOP (PW), 20 pins; 2000-piece large reel; marking ADS1247 |
| Manufacturer Status | Active / Production |
| Part Marking | ADS1247 |
Functional Highlights
Sensor excitation and diagnostics are integrated with the converter
RTD current, open-sensor detection and reference topology can be managed through the ADC rather than separate current-source/diagnostic ICs.
Reference topology can be matched to the sensor
Ratiometric resistance measurements can use excitation-derived references, while absolute sensors can use the integrated/external precision reference path.
Design Considerations
- Design IDAC routing and reference-resistor placement as part of the precision error budget.
- Use burnout currents for diagnostics, not as the normal precision excitation source.
- Check mux/filter settling when rapidly switching between sensor types or gains.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists ADS1247IPWR as Active / Production; TSSOP (PW), 20 pins; 2000-piece large tape and reel; −40°C to +105°C; marking ADS1247.
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.
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