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Texas Instruments TLV0831C
- Part No.:
- TLV0831C
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
TLV0831C.pdf
- Description:
- IC 8 BIT 49 KSPS ADC S/O 8-SOIC
- Quantity:
- Payment:
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Inventory:800
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Product details
Overview
TLV0831C from Texas Instruments is an 8-bit successive-approximation analog-to-digital converter (ADC) with single-ended or differential input capability, 32 µs conversion time at 250 kHz clock, ±1 LSB total unadjusted error, and operation from 2.7 V to 3.6 V supply. It interfaces directly with microprocessors via serial output and is used in sensor signal conditioning for industrial monitoring systems.
For engineers reviewing the TLV0831C datasheet, TLV0831C pinout, TLV0831C application, or TLV0831C equivalent, this page delivers verified electrical parameters, package mapping, functional context, and real-world use cases - all specific to the TLV0831C (0°C to 70°C temperature grade, SOIC/D or PDIP/P package variants).
Technical Context
The TLV0831C implements a sample-data-comparator architecture with internal SAR logic and resistive ladder DAC, enabling ratiometric conversion when REF = VCC. Its single-channel design eliminates multiplexer addressing overhead, simplifying firmware integration compared to dual-channel TLV0832 variants.
Conversion is initiated by CS low, followed by 8 clock cycles delivering MSB-first serial data on DO. Input range spans 0 V to VCC with TTL/MOS-compatible I/O, and common-mode voltage supports −0.05 V to VCC+0.05 V - critical for precision single-ended sensor interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete digital codes for analog inputs between 0 V and VCC. |
| Supply Voltage | 2.7 V to 3.6 V - enables direct interface with 3.3 V microcontrollers without level-shifting. |
| Conversion Time | 32 µs at fCLK = 250 kHz - supports up to ~31.25 kSPS sampling rate in continuous mode. |
| Total Unadjusted Error | ±1 LSB - includes offset, full-scale, linearity, and multiplexer errors; ensures monotonicity and predictable accuracy. |
| Input Configuration | Single-ended (IN+ vs GND) or differential (IN+ vs IN−) - allows rejection of common-mode noise or zero-offset adjustment. |
| Reference Mode | Ratiometric or fixed VCC reference - enables high-resolution encoding of sub-VCC analog spans by setting REF externally. |
| Operating Temperature | 0°C to 70°C - validated performance across commercial ambient conditions without derating. |
Pinout & Package
TLV0831C is available in 8-pin SOIC (D) and PDIP (P) packages. Both share identical pinout and thermal/mechanical footprint per TI's D0008A drawing (SOIC: 3.91 mm × 4.90 mm × 1.75 mm max height; PDIP: 9.27 mm × 6.35 mm × 3.30 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable for conversion cycle; must remain low for entire 8-clock conversion sequence. |
| IN+ | Positive Analog Input | Primary analog input node; used alone (vs GND) for single-ended mode or paired with IN− for differential mode. |
| IN− | Negative Analog Input | Reference input for differential mode; grounded for single-ended operation; polarity fixed (no software reassignment). |
| GND | Analog/Digital Ground | Common return path for analog signals, digital I/O, and power supply; requires low-impedance PCB connection. |
| VCC | Power Supply | 2.7–3.6 V supply powering analog core, digital logic, and internal reference ladder. |
| CLK | Serial Clock Input | Asynchronous master clock driving SAR logic and serial shift register; 250 kHz typical, up to 600 kHz at 3.3 V. |
| DO | Serial Data Output | MSB-first 8-bit digital output; tri-state (high-Z) when CS is high; compatible with standard shift registers. |
| REF | Reference Voltage Input | External or internally tied to VCC; sets full-scale analog input range; ratiometric operation enabled when REF = VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Microprocessor Interface | Serial 3-wire interface (CS, CLK, DO) reduces MCU pin count and eliminates parallel bus routing complexity. |
| Ratiometric Conversion | Full 8-bit resolution maintained when REF matches sensor output span - e.g., 0–2.5 V sensor uses 2.5 V REF for optimal SNR. |
| Differential Input Support | Rejects common-mode noise up to ±0.05 V offset; enables accurate measurement of small differential signals in noisy environments. |
| Low Power Operation | 0.2–0.75 mA supply current at 3.3 V - suitable for battery-powered sensor nodes with duty-cycled ADC usage. |
| TTL/MOS Compatibility | Logic thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V) ensure robust interfacing with legacy and modern 3.3 V logic families. |
Applications
| Industrial Sensor Interface | Portable Instrumentation |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, or humidity sensors in factory automation PLC modules where analog outputs require digitization before CAN or RS-485 transmission. IC Role / Device Role / Timing Role: Single-channel ADC converting conditioned sensor voltage (0–3.3 V) into 8-bit digital words synchronized to host MCU clock. Use Value: Eliminates need for external op-amp buffering or reference ICs due to built-in ratiometric support and wide input range. |
Use Scenario: Battery-powered handheld multimeters measuring DC voltage, current, or resistance with auto-ranging analog front-end. IC Role / Device Role / Timing Role: Low-power ADC sampling sensor outputs at <1 kSPS, entering standby between measurements to conserve energy. Use Value: 0.2 mA typical ICC enables >1-year battery life in devices using CR2032 coin cells with periodic sampling. |
| Motor Control Feedback | Consumer Appliance Monitoring |
|
Use Scenario: Reading current-sense amplifier outputs in BLDC motor drives to detect overcurrent or commutation timing errors. IC Role / Device Role / Timing Role: High-speed sampling (31 kSPS) of shunt voltage during PWM dead-time windows for real-time fault detection. Use Value: 32 µs conversion time ensures complete sampling within short PWM off-periods without missing critical transients. |
Use Scenario: Digitizing thermistor or NTC voltage dividers in smart thermostats or coffee makers for precise temperature regulation. IC Role / Device Role / Timing Role: Standalone ADC operating without microcontroller intervention via simple CS/CLK handshaking for cost-sensitive BOMs. Use Value: Direct TTL-compatible I/O and no external components reduce bill-of-materials and PCB area versus multi-chip solutions. |
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 |
|---|---|---|---|
| ADC0831CN | Functionally equivalent at 3 V supply per TI documentation; same pinout, timing, and electrical specs; manufactured by National Semiconductor (now TI). | Legacy part with identical functionality but older process; may have longer lead times and limited RoHS compliance documentation. | Select TLV0831C for new designs requiring guaranteed long-term availability, RoHS/Green compliance, and TI's current quality assurance. |
| TLV0831ID | Same die and architecture, but rated for −40°C to 85°C industrial temperature range; otherwise identical electrical and timing behavior. | Required for outdoor, automotive under-hood, or extended-temperature industrial deployments where 0°C–70°C is insufficient. | Choose TLV0831ID only if operating ambient exceeds 70°C; TLV0831C remains optimal for commercial indoor applications. |
Compared with ADC0831CN and TLV0831ID, the TLV0831C offers certified RoHS/Green compliance, documented 0°C–70°C performance validation, and streamlined procurement through TI's active product status - making it the preferred choice for cost-sensitive, volume commercial designs.
Availability
TLV0831C is available at Aetrix Electronics and suitable for industrial sensor interface, portable instrumentation, motor control feedback, and consumer appliance monitoring requiring stable component supply and commercial-temperature-grade reliability.
Supply support for TLV0831C 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and industrial-grade ICs.
The TLV0831C belongs to TI's TLV083x family of low-voltage, serial-output ADCs designed specifically for cost-effective, space-constrained sensor signal acquisition in commercial and light-industrial applications.
FAQ
What is the maximum clock frequency supported by TLV0831C?
The TLV0831C supports up to 600 kHz clock frequency at VCC = 3.3 V, per the recommended operating conditions table. At lower supply voltages (e.g., 2.7 V), the maximum clock is 250 kHz. Exceeding these limits risks incomplete conversions or metastability in the SAR logic, so design margins should be maintained per TI's SLAS148 specification.
Does TLV0831C require an external reference voltage?
No - the TLV0831C can operate ratiometrically using VCC as its reference by connecting REF to VCC (internally routed in some configurations). An external reference is optional and used only when higher precision or non-VCC-aligned input spans (e.g., 0–2.5 V) are required. The device's REF input accepts voltages from 1.0 V to VCC.
Can TLV0831C perform differential measurements?
Yes - the TLV0831C supports true differential input mode between IN+ and IN− terminals, enabling common-mode noise rejection and offset cancellation. Unlike the TLV0832, polarity assignment is fixed (IN+ positive, IN− negative), and no software configuration is needed. This makes it ideal for dedicated differential sensor interfaces like bridge amplifiers.
What package options are available for TLV0831C?
The TLV0831C is offered in two industry-standard packages: 8-pin SOIC (D package, 3.91 mm × 4.90 mm) and 8-pin PDIP (P package, 9.27 mm × 6.35 mm). Both share identical pinout and electrical characteristics. SOIC variants (TLV0831CD/CDR) support automated assembly; PDIP (TLV0831CP) is suited for prototyping and through-hole manufacturing.
How does TLV0831C handle power supply variation?
The TLV0831C exhibits ±1/16 to ±1/4 LSB supply-voltage variation error across VCC = 3.0 V to 3.6 V, meaning its conversion accuracy degrades minimally with supply ripple. This stability stems from its ratiometric architecture - when REF = VCC, full-scale code tracks supply changes, preserving relative measurement fidelity without external regulation.
TLV0831C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
TLV0831C FAQ
1.How can I place an order for TLV0831C through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV0831C 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 TLV0831C reliable?
The price and inventory of TLV0831C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV0831C is usually 5 days.
3.What payment methods are accepted for TLV0831C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV0831C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV0831C?
TLV0831C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV0831C 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 TLV0831C?
For technical support, including TLV0831C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV0831C requirements.
6.How does Aetrix verify that TLV0831C is sourced from the original manufacturer or authorized distributors?
All TLV0831C 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 TLV0831C meets industry standards.
7.What is the process for return or replacement of TLV0831C?
All TLV0831C units undergo pre-shipment inspection (PSI). If there is an issue with TLV0831C, 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 TLV0831C part is unused and in its original packaging.
Return procedure for TLV0831C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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