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Texas Instruments TLC0831CPE4
- Part No.:
- TLC0831CPE4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC0831CPE4.pdf
- Description:
- 8-BIT, 31 KSPS ADC SERIAL OUT, M
- Quantity:
- Payment:
- Shipping:
Inventory:3,222
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Product details
Overview
TLC0831CPE4 from Texas Instruments is an 8-bit successive-approximation analog-to-digital converter (ADC) with serial control interface, single-ended/differential input capability, ratiometric operation support, and TTL/MOS-compatible I/O. It operates from a single 5-V supply, delivers ±1 LSB total unadjusted error, and achieves 32 µs conversion time at 250 kHz clock - ideal for embedded sensor signal digitization in industrial monitoring systems.
For engineers reviewing the TLC0831CPE4 datasheet, TLC0831CPE4 pinout, TLC0831CPE4 application, or TLC0831CPE4 equivalent, key selection considerations include its fixed single-channel architecture (vs. multiplexed TLC0832), PDIP-8 package suitability for prototyping and legacy designs, 0°C to 70°C temperature grade, and direct interchangeability with National Semiconductor ADC0831.
Technical Context
The TLC0831CPE4 implements a sample-data-comparator SAR architecture with internal resistive ladder and comparator-based successive approximation logic. Its analog input accepts either single-ended (IN+ referenced to GND) or differential (IN+ vs IN–) configurations, enabling common-mode rejection without external circuitry.
Serial communication uses a CS-controlled, clock-synchronized protocol: CS low enables logic; DO outputs MSB-first data over eight clock cycles; conversion completes in exactly eight clock periods with no multiplexer addressing overhead. The REF pin supports ratiometric operation by tying to VCC or an external reference up to VCC + 0.05 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for precise low-to-mid-speed sensor digitization |
| Conversion Time | 32 µs at fCLK = 250 kHz - enables up to ~31.25 kSPS sampling in continuous mode |
| Total Unadjusted Error | ±1 LSB - includes offset, full-scale, linearity, and multiplexer errors; no calibration required for basic accuracy |
| Input Range | 0 V to 5 V with single 5-V supply - eliminates need for dual supplies or level-shifting circuitry |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5-V logic rails and tolerant of typical power rail variation |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade applications including test equipment and consumer electronics |
| Digital Interface | 3-wire serial (CS, CLK, DO) - reduces PCB routing complexity and supports microcontroller GPIO bit-banging |
Pinout & Package
Package: Plastic DIP (PDIP)-8, 0.300-inch wide body, through-hole mount. Pin 1 identified by notch or dot; standard JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-low enable: must remain low for entire conversion; initiates internal logic and DO output enable |
| 2 (IN+) | Positive Analog Input | Primary analog input node; used with IN– for differential mode or with GND for single-ended mode |
| 3 (IN–) | Negative Analog Input | Reference input for differential mode; grounded for single-ended operation; polarity fixed (no software address) |
| 4 (GND) | Analog/Digital Ground | Common return for analog inputs, digital I/O, and supply; requires low-impedance connection to minimize noise |
| 5 (VCC) | Power Supply | +4.5 V to +5.5 V supply; powers analog core, digital logic, and output drivers |
| 6 (CLK) | Serial Clock Input | Asynchronous master clock; controls bit timing for conversion and MSB-first DO output |
| 7 (DO) | Serial Data Output | Tri-state open-drain output; provides MSB-first 8-bit result after CS assertion and clocking |
| 8 (REF) | Reference Voltage Input | Defines full-scale range; internally tied to VCC on TLC0832, but externally configurable here for ratiometric accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Single-channel SAR ADC | Fixed IN+/IN– input pair eliminates channel selection logic overhead and simplifies firmware integration |
| Ratiometric operation support | REF pin accepts VCC or external reference; enables accurate measurement under varying supply conditions |
| TTL/MOS logic compatibility | Direct interface with 5-V microcontrollers and logic families without level shifters or pull-up resistors |
| Low supply current | 1.25 mA typical at 5 V - suitable for battery-backed or low-power embedded systems with intermittent sampling |
| Interchangeable with ADC0831 | P2P pinout and functional equivalence allow drop-in replacement in legacy National Semiconductor designs |
Applications
| Industrial Sensor Interface | Legacy Test Equipment Upgrade |
|---|---|
|
Use Scenario: Digitizing thermistor, potentiometer, or pressure transducer outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Primary ADC converting slow-varying analog signals into 8-bit digital words for microcontroller processing. Use Value: ±1 LSB accuracy and 0–5 V input range match standard industrial sensor output spans without signal conditioning. |
Use Scenario: Replacing obsolete ADC0831 in aging benchtop multimeters and calibration sources. IC Role / Device Role / Timing Role: Pin-compatible ADC providing identical timing, interface, and electrical behavior as original part. Use Value: Direct substitution avoids PCB redesign; PDIP-8 package maintains compatibility with through-hole assembly processes. |
| Embedded Microcontroller Peripherals | Education & Prototyping Platforms |
|
Use Scenario: Adding analog sensing to Arduino- or PIC-based environmental monitoring nodes with minimal GPIO usage. IC Role / Device Role / Timing Role: Serial ADC offloading analog acquisition from MCU's internal ADC, freeing resources for real-time tasks. Use Value: 3-wire interface uses only one GPIO for data (DO), reducing pin count pressure on resource-constrained MCUs. |
Use Scenario: Teaching SAR conversion principles and serial interface protocols in university electronics labs. IC Role / Device Role / Timing Role: Hands-on ADC demonstrating clock-synchronized sampling, MSB-first output, and ratiometric reference concepts. Use Value: Through-hole PDIP-8 package enables breadboard-friendly prototyping and oscilloscope visibility on all signals. |
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 | Identical pinout, function, and spec sheet; same National Semiconductor origin; discontinued but still available via legacy distributors | No functional difference; identical use cases and layout requirements | Select when sourcing from legacy inventory or when matching existing BOMs with National part numbers |
| TLC0831CP | Same die, same specs, same PDIP-8 package - differs only in TI's internal marking and packaging (tube vs E4 variant) | Functionally identical; E4 suffix denotes TI's standard tube packaging per MIL-STD-883 Class B screening | Prefer TLC0831CPE4 for new designs requiring TI's documented production traceability and RoHS compliance |
Compared with ADC0831CN and TLC0831CP, the TLC0831CPE4 offers guaranteed TI manufacturing continuity, NIPDAU lead finish, and full lifecycle support - critical for long-term industrial programs where obsolescence risk must be minimized.
Availability
TLC0831CPE4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, legacy test equipment upgrades, and educational prototyping requiring stable component supply across multi-year production cycles.
Supply support for TLC0831CPE4 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.
The TLC0831CPE4 belongs to TI's legacy 8-bit serial ADC family, designed specifically for cost-sensitive, low-pin-count applications requiring simple microprocessor interfacing and robust ratiometric performance in commercial environments.
FAQ
What is the maximum clock frequency supported by the TLC0831CPE4?
The TLC0831CPE4 supports clock frequencies from 10 kHz to 600 kHz per datasheet Section "Recommended Operating Conditions." At 600 kHz, conversion time reduces to ~13.3 µs (8 clock periods), but system-level timing margins and DO setup/hold requirements must be verified against load capacitance and controller drive strength.
Can the TLC0831CPE4 operate with a 3.3-V microcontroller interface?
No - the TLC0831CPE4 requires a 4.5–5.5-V supply and its digital I/O (CS, CLK, DO) is specified for TTL/MOS compatibility at 5 V. Driving CLK or CS from a 3.3-V MCU may violate VIH (≥2 V) and VIL (≤0.8 V) thresholds under worst-case conditions; level translation is required for reliable operation.
Does the TLC0831CPE4 support differential input mode?
Yes - the TLC0831CPE4 accepts differential inputs between IN+ and IN– pins. Unlike the TLC0832, it has no software-configurable polarity or channel selection; the differential pair is fixed and always active when both inputs are driven within the common-mode range (–0.05 V to VCC+0.05 V).
What is the purpose of the REF pin on the TLC0831CPE4?
The REF pin sets the full-scale reference voltage for conversion. When tied to VCC, it enables ratiometric operation - meaning output code scales proportionally with supply voltage, eliminating errors from VCC drift. It can also accept an external precision reference (e.g., 2.5 V) to encode smaller input spans with full 8-bit resolution.
Is the TLC0831CPE4 RoHS compliant?
Yes - the TLC0831CPE4 carries "Yes" for RoHS compliance per TI's Package Option Addendum, with NIPDAU (nickel-palladium-gold) lead finish and full documentation supporting EU Directive 2011/65/EU compliance for lead-free assembly.
TLC0831CPE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 31k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Serial
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 4.5V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Supplier Device Package:
- 8-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
TLC0831CPE4 FAQ
1.How can I place an order for TLC0831CPE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC0831CPE4 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 TLC0831CPE4 reliable?
The price and inventory of TLC0831CPE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC0831CPE4 is usually 5 days.
3.What payment methods are accepted for TLC0831CPE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC0831CPE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC0831CPE4?
TLC0831CPE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC0831CPE4 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 TLC0831CPE4?
For technical support, including TLC0831CPE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC0831CPE4 requirements.
6.How does Aetrix verify that TLC0831CPE4 is sourced from the original manufacturer or authorized distributors?
All TLC0831CPE4 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 TLC0831CPE4 meets industry standards.
7.What is the process for return or replacement of TLC0831CPE4?
All TLC0831CPE4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC0831CPE4, 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 TLC0831CPE4 part is unused and in its original packaging.
Return procedure for TLC0831CPE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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