Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| ADC | 12-bit SAR |
| Channels | 8 single-ended inputs |
| Throughput | 50 kSPS to 200 kSPS specified |
| Interface | SPI/QSPI/MICROWIRE/DSP-compatible serial |
| Analog Supply | 2.7 V to 5.25 V; also used as ADC reference |
| Digital Supply | 2.7 V to VA, independent rail |
| Power | 1.2 mW typical at 3 V stated feature |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2500-piece large reel |
Product Overview
ADC128S022CIMTX/NOPB is an eight-channel 12-bit SAR ADC for moderate-speed multiplexed data acquisition. Its 50–200 kSPS range is substantially slower than the pin/function-related ADC128S102, but it consumes less power and may be sufficient for sensors, housekeeping and control loops.
VA doubles as the analog reference, so supply/reference noise directly changes conversion full scale. The separate VD pin allows digital I/O voltage to follow the processor while the analog rail is optimized independently.
Because the input mux feeds one track/hold, source impedance and channel-to-channel step size determine acquisition settling. High-impedance sensors may need buffering or extra settling strategy.
For related devices, see HKEQGOO’s ADCs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | ADC128S022CIMTX/NOPB |
| ADC | 12-bit SAR |
| Channels | 8 single-ended inputs |
| Throughput | 50 kSPS to 200 kSPS specified |
| Interface | SPI/QSPI/MICROWIRE/DSP-compatible serial |
| Analog Supply | 2.7 V to 5.25 V; also used as ADC reference |
| Digital Supply | 2.7 V to VA, independent rail |
| Power | 1.2 mW typical at 3 V stated feature |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2500-piece large reel |
| Manufacturer Status | Active / Production |
| Part Marking | 128S022 CIMT |
Functional Highlights
200 kSPS is a deliberate power/speed point
Selecting the 1 MSPS sibling unnecessarily can raise power/EMI without improving a slow sensor application.
VA is both supply and reference
A noisy 5 V rail becomes gain/reference noise. Reference-quality decoupling/regulation is therefore part of ADC accuracy.
Design Considerations
- Check source impedance against acquisition time after channel switching.
- Treat VA as a reference rail and decouple/filter accordingly.
- Set SPI clock/throughput inside the 50–200 kSPS specified operating range.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists ADC128S022CIMTX/NOPB as Active / Production; TSSOP (PW), 16 pins; 2500-piece large tape and reel; −40°C to +105°C.
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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