My Inquiry
My Account
Texas Instruments ADC0831CCWM/NOPB
- Part No.:
- ADC0831CCWM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 14-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADC0831CCWM/NOPB.pdf
- Description:
- IC ADC 8BIT SAR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:161
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADC0831CCWM/NOPB from Texas Instruments is an 8-bit successive approximation analog-to-digital converter with single differential input, serial MICROWIRE-compatible interface, ±1 LSB total unadjusted error, 5 VDC single supply operation, and 32 μs conversion time. It serves as a compact, low-power ADC for embedded sensor signal conditioning in industrial monitoring systems where space and power are constrained.
For engineers reviewing the ADC0831CCWM/NOPB datasheet, ADC0831CCWM/NOPB pinout, ADC0831CCWM/NOPB application, or ADC0831CCWM/NOPB equivalent, this page delivers verified electrical parameters, package-specific terminal roles, real-world use scenarios, and validated alternative parts for design-in decisions under temperature range (0°C to +70°C), ratiometric reference operation, and microcontroller-serial integration constraints.
Technical Context
The ADC0831CCWM/NOPB implements a sample-data comparator architecture with fixed single differential input (VIN(+) and VIN(−)), no MUX addressing required, and internal COM tied to GND. Its serial interface uses CS-controlled start bit detection, MSB-first data output on DO, and TI MICROWIRE timing compliance - enabling direct connection to COPS-family processors or standard shift registers without external logic.
It operates ratiometrically with VREF = VCC (internally connected), supports 0 V to 5 V input range at 5 V supply, and integrates a shunt regulator allowing V+ supply up to 8.5 V via external current-limiting resistor. No zero or full-scale adjustment is needed due to inherent ±1 LSB error specification across 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8 bits - delivers 256 discrete digital codes over full-scale input range. |
| Total Unadjusted Error | ±1 LSB - includes offset, full-scale, linearity, and multiplexer errors; no calibration required for basic accuracy. |
| Supply Voltage | 4.5 VDC to 6.3 VDC - compatible with standard 5 V logic rails and tolerant of minor rail variation. |
| Conversion Time | 32 μs - enables up to ~31.25 kSPS sampling rate with 250 kHz clock; deterministic timing per conversion cycle. |
| Power Consumption | 15 mW at 5 V - supports battery-powered or thermally sensitive applications with minimal self-heating. |
| Input Range | 0 V to 5 V with single 5 V supply - accepts ground-referenced signals without level-shifting circuitry. |
| Reference Mode | Ratiometric - VREF internally tied to VCC; system accuracy tracks supply stability, simplifying design. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade embedded control and instrumentation environments. |
Pinout & Package
ADC0831CCWM/NOPB is housed in an 8-pin SOIC (NPA) package with 0.150-inch body width and surface-mount footprint. Pin functions are validated per TI SNAS531B Figure 6 (SOIC top view) and functional block diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Provides 4.5–6.3 V power; also serves as internal VREF source in ratiometric mode. |
| GND | Ground reference | Analog and digital common return; COM internally connected to GND for differential input reference. |
| VIN(+) | Differential positive input | Accepts analog signal; conversion result = f(VIN(+) − VIN(−)); must remain within −0.3 V to VCC + 0.3 V. |
| VIN(−) | Differential negative input | Fixed reference point (COM); tied internally to GND; defines zero point for differential measurement. |
| CLK | Serial clock input | Synchronizes MUX address capture and SAR conversion; supports 10–400 kHz frequency range. |
| CS | Chip select input | Active-low enable; must stay low for entire conversion; initiates start-bit detection and DO release. |
| DI | Data input | Receives start bit and MUX address; unused for ADC0831 (no address required), but retained for family compatibility. |
| DO | Data output | Tri-state serial output; delivers 8-bit MSB-first result after conversion; high-impedance when CS is high. |
Key Features
| Feature | Design Value |
|---|---|
| Single differential input with fixed polarity | Eliminates need for external MUX control logic; simplifies PCB layout and firmware for dedicated sensor interfaces. |
| TTL/MOS-compatible I/O | Direct interfacing to 5 V microcontrollers without level translators; reduces BOM count and signal integrity risk. |
| No zero or full-scale adjustment required | Reduces production test time and eliminates trim potentiometers; supports drop-in replacement in calibrated systems. |
| Shunt regulator support via V+ pin | Enables operation from unregulated supplies up to 8.5 V using external current-limiting resistor; improves system-level power flexibility. |
| 0.3-inch standard SOIC package | Industry-standard footprint compatible with automated assembly and legacy board designs; avoids custom land patterns. |
| Low leakage input channels | ±1 μA max off-channel leakage ensures <1 mV error with ≤1 kΩ source impedance; preserves accuracy in high-Z sensor circuits. |
Applications
| Industrial Temperature Monitoring | Motor Current Sensing |
|---|---|
|
Use Scenario: Measuring thermistor or RTD voltage outputs in PLC analog input modules operating at ambient temperatures from 0°C to 70°C. IC Role / Device Role / Timing Role: ADC0831CCWM/NOPB performs single-ended-to-differential conversion of conditioned sensor voltage with 32 μs latency per sample. Use Value: Ratiometric operation eliminates need for precision voltage reference; ±1 LSB error meets Class B industrial accuracy requirements. |
Use Scenario: Digitizing shunt-resistor voltage drops in DC motor drive feedback loops requiring fast, low-cost current measurement. IC Role / Device Role / Timing Role: ADC0831CCWM/NOPB acts as isolated analog front-end ADC, converting bidirectional current sense voltage into 8-bit digital stream. Use Value: Fixed differential input rejects common-mode noise from PWM switching; 15 mW dissipation prevents thermal drift in enclosed enclosures. |
| Embedded HVAC Sensor Node | Legacy Equipment Analog Interface |
|
Use Scenario: Retrofitting analog humidity/pressure sensors into wireless sensor nodes powered by 5 V USB or coin-cell regulators. IC Role / Device Role / Timing Role: ADC0831CCWM/NOPB serves as serial-output A/D stage, interfacing directly to low-pin-count MCUs via GPIO bit-banged MICROWIRE. Use Value: SOIC-8 package fits space-constrained PCBs; no external reference or trim components reduce bill-of-materials cost. |
Use Scenario: Replacing obsolete 8-bit ADCs in aging test equipment where original schematics specify 8-pin DIP but board space allows SOIC. IC Role / Device Role / Timing Role: ADC0831CCWM/NOPB substitutes for through-hole ADC0831-N in same functional position, using adapter or re-layout. Use Value: Identical electrical specs and pin-compatible SOIC variant (NPA) enables direct replacement with no firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADC0831CCN/NOPB | 8-pin PDIP package; identical electrical specs and timing; same 0°C to +70°C rating. | Through-hole mounting required; larger footprint; suited for prototyping or legacy repair. | Select when manual soldering, breadboarding, or socket-based field replacement is needed. |
| ADC0832CCN/NOPB | 2-channel software-configurable MUX; same resolution, error, supply, and interface; adds channel selection logic. | Supports dual-sensor inputs (e.g., voltage + current); requires MUX address bits during CS low period. | Choose when future expansion to multi-channel sensing is anticipated and board space permits extra pins. |
Compared with ADC0831CCWM/NOPB, the PDIP ADC0831CCN/NOPB offers identical performance in through-hole format, while ADC0832CCN/NOPB adds multiplexing capability at the cost of added firmware complexity and pin count - making ADC0831CCWM/NOPB optimal for fixed single-input, space-constrained, and cost-sensitive designs.
Availability
ADC0831CCWM/NOPB is available at Aetrix Electronics and suitable for industrial temperature monitoring, motor current sensing, embedded HVAC sensor nodes, and legacy equipment analog interface applications requiring stable component supply, commercial-temperature-grade ADCs, and SOIC-8 packaging.
Supply support for ADC0831CCWM/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
ADC0831CCWM/NOPB belongs to TI's legacy 8-bit serial ADC product line designed for cost-sensitive, low-complexity data acquisition in commercial and industrial control systems where simplicity, small size, and minimal external components are critical.
FAQ
What is the maximum clock frequency supported by ADC0831CCWM/NOPB?
The ADC0831CCWM/NOPB supports a maximum clock frequency of 400 kHz, as specified in its AC characteristics table. At this rate, conversion time remains at 32 μs, enabling up to ~31.25 kSPS throughput. Operation above 400 kHz may cause timing violations or incorrect code output, and is not guaranteed by TI's production testing.
Does ADC0831CCWM/NOPB require an external voltage reference?
No, ADC0831CCWM/NOPB does not require an external voltage reference. Its VREF pin is internally connected to VCC, enabling ratiometric operation - meaning the full-scale range scales directly with the supply voltage. This eliminates the need for precision references in applications where supply stability suffices for accuracy requirements.
Can ADC0831CCWM/NOPB be used with a 3.3 V microcontroller?
ADC0831CCWM/NOPB is not 3.3 V compatible. Its absolute maximum logic input voltage is VCC + 0.3 V, and it requires a minimum VCC of 4.5 V. Driving DI or CLK from a 3.3 V MCU violates input high-level voltage spec (VIN(1) min = 2.0 V at VCC = 5.25 V, but logic "1" must exceed 2.0 V reliably). Level translation is mandatory for safe interfacing.
What is the purpose of the V+ pin on ADC0831CCWM/NOPB?
The V+ pin on ADC0831CCWM/NOPB connects to an internal 6.3–8.5 V zener diode that functions as a shunt regulator. When powered from an unregulated source (e.g., 9 V wall adapter), V+ allows the device to regulate its own VCC via the internal diode - provided an external current-limiting resistor is used to cap current at ≤15 mA. VCC remains functional even if V+ exceeds 6.5 V.
Is ADC0831CCWM/NOPB pin-compatible with ADC0831-N in PDIP package?
Yes, ADC0831CCWM/NOPB (SOIC-8 NPA) and ADC0831-N (PDIP-8 P) share identical pin numbering and function mapping per TI SNAS531B Figures 4 and 6. Both have VCC, GND, VIN(+), VIN(−), CLK, CS, DI, and DO in the same order. Mechanical mounting differs, but schematic symbol and netlist usage are interchangeable with appropriate footprint adaptation.
ADC0831CCWM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 31.25k
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.5V ~ 6.3V
- Voltage - Supply, Digital:
- 4.5V ~ 6.3V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 14-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC0831CCWM/NOPB FAQ
1.How can I place an order for ADC0831CCWM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC0831CCWM/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADC0831CCWM/NOPB reliable?
The price and inventory of ADC0831CCWM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC0831CCWM/NOPB is usually 5 days.
3.What payment methods are accepted for ADC0831CCWM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC0831CCWM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC0831CCWM/NOPB?
ADC0831CCWM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC0831CCWM/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADC0831CCWM/NOPB?
For technical support, including ADC0831CCWM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC0831CCWM/NOPB requirements.
6.How does Aetrix verify that ADC0831CCWM/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC0831CCWM/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADC0831CCWM/NOPB meets industry standards.
7.What is the process for return or replacement of ADC0831CCWM/NOPB?
All ADC0831CCWM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC0831CCWM/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADC0831CCWM/NOPB part is unused and in its original packaging.
Return procedure for ADC0831CCWM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADC0831CCWM/NOPB Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
