ADC081S051CISD Texas Instruments Analog-to-Digital Converters (WSON-6) In Stock
ADC081S051CISD is a single-channel 8-bit successive approximation ADC by Texas Instruments with SPI-compatible serial output. Key specs: 200 to 500 ksps sample rate, 2 µs max conversion time, 5.25 V analog input, 6-pin WSON package. From $1.20, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- WSON-6
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- ADC081S051CISD Datasheet PDF
- Category
- Analog-to-Digital Converters
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit SAR ADC with 200 to 500 ksps variable sample rate and 2 µs maximum conversion time for real-time sensor digitization
- Single-channel SPI-compatible serial interface simplifying MCU integration with just 3 wires and minimal firmware overhead
- Compact 6-pin WSON package with 5.25 V analog input range covering standard 5 V sensor outputs in industrial and consumer designs
Applications
The ADC081S051CISD is well-suited for microcontroller-based sensor digitization in industrial monitoring systems, where its 500 ksps maximum sample rate allows capturing signals up to 250 kHz per Nyquist criterion across a single analog channel. Its SPI-compatible 3-wire interface enables straightforward integration with low-pin-count microcontrollers in IoT edge nodes, smart home sensors, and portable test instruments operating from 5 V supplies. The -40°C to +85°C operating range makes it reliable for outdoor environmental monitoring, HVAC control, and light industrial automation applications.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.25V |
| Conversion Time-Max | 2 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-N6 |
| JESD-609 Code | e0 |
| Linearity Error-Max (EL) | 0.1172% |
| Number of Analog In Channels | 1 |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC6,.1,25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.5MHz |
| Sample and Hold / Track and Hold | TRACK |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | WSON-6 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What maximum sample rate does the ADC081S051CISD support and what signal bandwidth can it faithfully digitize?
The ADC081S051CISD supports a maximum sample rate of 500 ksps with a 2 µs conversion time. By the Nyquist theorem, this enables accurate digitization of analog signals up to 250 kHz bandwidth. For typical audio and sensor applications below 10 kHz, the device provides substantial oversampling margin, which can be exploited to average 25 samples and improve effective resolution beyond the native 8 bits.
How does the ADC081S051CISD's SPI interface simplify integration with an ARM Cortex-M microcontroller?
The ADC081S051CISD uses a 3-wire SPI-compatible interface — chip select (CS), serial clock (SCLK), and serial data out (SDATA) — requiring no dedicated parallel bus and consuming only 3 GPIO pins on the microcontroller. A conversion is initiated by asserting CS low, clocking out 16 bits at up to 20 MHz SCLK to retrieve the 8-bit result, then deasserting CS. Total read overhead per sample is under 1 µs at 20 MHz, leaving over 99% of a 500 ksps acquisition cycle free for MCU processing.
In a battery-powered environmental sensor operating at -40°C, how does the ADC081S051CISD's temperature range and linearity perform?
The ADC081S051CISD is rated from -40°C to +85°C with a maximum linearity error of 0.1172% (approximately 0.3 LSB at 8-bit resolution), ensuring consistent measurement accuracy across the full industrial temperature range without requiring calibration at each temperature extreme. This specification means the digitized output of a 0–5 V temperature sensor will deviate by no more than 12 mV from the ideal transfer curve even at cold-soak conditions, satisfying most environmental monitoring accuracy requirements.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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