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Texas Instruments TLV2543CDBR
- Part No.:
- TLV2543CDBR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
TLV2543CDBR.pdf
- Description:
- IC ADC 12BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
TLV2543CDBR from Texas Instruments is a 12-bit successive-approximation analog-to-digital converter (ADC) with serial interface, 11-channel analog multiplexer, and on-chip sample-and-hold. It delivers 10-µs conversion time, ±1 LSB linearity error, and operates from 0°C to 70°C. Used in industrial sensor interfaces and data acquisition systems requiring precise ratiometric measurement against external reference voltages.
For engineers reviewing the TLV2543CDBR datasheet, TLV2543CDBR pinout, TLV2543CDBR application, or TLV2543CDBR equivalent, key selection criteria include its 11 analog inputs, programmable 8/12/16-bit output length, unipolar/bipolar format support, EOC signaling, and CMOS-compatible serial control via CS/I/O CLOCK/DATA INPUT.
Technical Context
The TLV2543CDBR implements a switched-capacitor SAR architecture with an internal 14-channel multiplexer selecting among 11 external analog inputs or three self-test reference voltages. Sampling begins on the fourth falling edge of I/O CLOCK and completes on the final falling edge-timing synchronized to externally supplied clock cycles (8, 12, or 16).
Its control logic accepts an 8-bit input register configuring channel address (D7–D4), data length (D3–D2), MSB/LSB-first output (D1), and unipolar/bipolar format (D0). The end-of-conversion (EOC) signal transitions low after the last I/O CLOCK falling edge and returns high once the 12-bit result is latched into the output register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR - delivers 1 LSB = VREF/4096 quantization step for precision measurement. |
| Conversion Time | 10 µs over full temperature range - enables ≥100 kSPS throughput in continuous operation. |
| Analog Inputs | 11 single-ended channels (AIN0–AIN10) - supports multi-sensor monitoring without external MUX. |
| Linearity Error | ±1 LSB max - ensures monotonicity and <0.025% full-scale error for calibration-sensitive applications. |
| Reference Inputs | Differential REF+/REF− - enables ratiometric conversion, isolating analog section from supply noise. |
| Output Format | Programmable unipolar (unsigned binary) or bipolar (2's complement) - matches host processor data alignment needs. |
| Power-Down Current | ≤25 µA - reduces system power during idle intervals while retaining configuration state. |
Pinout & Package
TLV2543CDBR is housed in a 20-pin SSOP (DB) package with 0.65 mm pitch, optimized for compact PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN10 | Analog input | 11 multiplexed single-ended inputs; source impedance ≤50 Ω required for 4.1-MHz I/O CLOCK operation. |
| CS | Digital input | Chip select resets internal logic; enables DATA OUT, DATA INPUT, and I/O CLOCK when low. |
| DATA INPUT | Digital input | Serial 8-bit address/control word (MSB first) defining channel, data length, format, and test mode. |
| DATA OUT | Digital output | 3-state serial output; driven only when CS is low; outputs previous conversion result bit-by-bit. |
| EOC | Digital output | End-of-conversion flag; goes low after final I/O CLOCK falling edge and high when result is latched. |
| I/O CLOCK | Digital input | Master serial clock; controls data shift-in, sampling timing, and data shift-out synchronization. |
| REF+, REF− | Analog input | Differential reference terminals; define full-scale (VREF+ − VREF−) and zero-scale points. |
| VCC, GND | Power | Single 2.7–5.5 V supply; GND serves as analog/digital reference return for internal circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 14-channel analog multiplexer | Selects among 11 external analog inputs or 3 internal self-test voltages (VREF+, VREF−, (VREF+−VREF−)/2) without external components. |
| Programmable output data length | 8-, 12-, or 16-bit transfers - enables compatibility with 8-bit microcontrollers, 12-bit precision, or 16-bit serial interfaces. |
| Automatic sample-and-hold | Sampling starts on fourth I/O CLOCK falling edge and holds on final falling edge - eliminates need for external S/H circuitry. |
| Self-test modes | Three factory-trimmed internal reference voltages - allow in-system verification of ADC functionality without external stimuli. |
| CMOS-compatible serial interface | 3-wire control (CS, I/O CLOCK, DATA INPUT) + DATA OUT + EOC - simplifies isolation and reduces GPIO count on host MCU. |
Applications
| Industrial Sensor Interface | Multi-Channel Data Logger |
|---|---|
|
Use Scenario: Monitoring temperature, pressure, and current sensors across 11 field points in PLC backplanes or motor drives. IC Role / Device Role / Timing Role: Centralized 12-bit digitizer with multiplexed analog front-end and EOC-driven interrupt signaling to host MCU. Use Value: Eliminates external multiplexer and sample-and-hold, reducing BOM cost and board area while maintaining ±1 LSB linearity across 0°C–70°C. |
Use Scenario: Battery-powered environmental monitor logging voltage, humidity, and light levels at 100 Hz per channel. IC Role / Device Role / Timing Role: Low-power ADC with programmable power-down and 10-µs conversion enabling duty-cycled sampling. Use Value: Achieves ≤25 µA standby current and deterministic 10-µs conversion window - extends battery life without sacrificing resolution. |
| Factory Calibration System | Ratiometric Transducer Interface |
|
Use Scenario: Automated test equipment verifying sensor output linearity and offset across production batches. IC Role / Device Role / Timing Role: Precision ADC with built-in self-test references (VREF+, VREF−, mid-scale) for traceable calibration checks. Use Value: Enables in-situ validation of gain/offset errors without external reference sources - reduces test fixture complexity. |
Use Scenario: Interfacing bridge-based strain gauges and RTDs where excitation voltage drift affects accuracy. IC Role / Device Role / Timing Role: Ratiometric ADC using differential REF+/REF− inputs tied to same supply as transducer excitation. Use Value: Rejects common-mode supply variation - maintains 12-bit effective resolution despite ±5% VCC tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, SPI interface, no internal MUX, 2.7–5.25 V supply | Limited to lower-precision applications; lacks 11-channel MUX and self-test modes | Choose when 8-bit resolution suffices and board space is constrained - smaller SO-8 package. |
| TLV2548CDW | Same 12-bit SAR core but 28-pin SOIC (DW) package; adds internal 2.5-V reference and FIFO buffer | Supports higher channel count (8 external + 4 internal) and buffered serial output | Prefer when system requires integrated reference stability or burst-mode data capture - not pin-compatible with TLV2543CDBR. |
Compared with ADS7822U and TLV2548CDW, the TLV2543CDBR uniquely balances 11-channel integration, self-test capability, and SSOP packaging for cost-sensitive industrial DAQ - offering the only option with verified 10-µs conversion and ±1 LSB linearity in this footprint.
Availability
TLV2543CDBR is available at Aetrix Electronics and suitable for industrial sensor interfaces, multi-channel data loggers, factory calibration systems, and ratiometric transducer interfaces requiring stable component supply across extended manufacturing cycles.
Supply support for TLV2543CDBR 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 digital signal technologies with decades of precision data converter heritage.
The TLV2543CDBR belongs to TI's legacy low-power serial ADC product line, engineered for industrial and instrumentation applications demanding reliable 12-bit performance in compact packages with minimal external components.
FAQ
What is the operating temperature range for the TLV2543CDBR?
The TLV2543CDBR is characterized for operation from 0°C to 70°C - designated by the "C" suffix in the part number. This commercial-grade rating makes it suitable for indoor industrial controls, test equipment, and consumer-grade data acquisition where ambient conditions remain within this envelope. The TLV2543CDBR does not support extended temperature ranges like the TLV2543I (–40°C to 85°C).
Does the TLV2543CDBR require an external sample-and-hold circuit?
No, the TLV2543CDBR integrates an inherent sample-and-hold function that activates automatically during the I/O cycle. Sampling begins on the fourth falling edge of I/O CLOCK and concludes on the final falling edge - eliminating the need for external S/H components. This feature reduces system cost, board area, and design complexity while ensuring timing coherence between sampling and conversion phases.
How many analog input channels does the TLV2543CDBR support?
The TLV2543CDBR supports 11 single-ended analog input channels (AIN0 through AIN10), managed by an on-chip 14-channel analog multiplexer. Three additional multiplexer positions are reserved for internal self-test voltages (VREF+, VREF−, and their midpoint), enabling in-system diagnostics without external signal sources. Channel selection is controlled via the 4-bit address field in the 8-bit input register.
Can the TLV2543CDBR operate with different output data lengths?
Yes, the TLV2543CDBR supports programmable output data lengths of 8, 12, or 16 bits via bits D3 and D2 in the input register. In 8-bit mode, the four LSBs are truncated; in 16-bit mode, four zero pad bits are appended. The selected length determines the I/O CLOCK cycle duration (8, 12, or 16 edges) and affects synchronization - the device requires exact clock counts to maintain data integrity across conversions.
What is the purpose of the EOC pin on the TLV2543CDBR?
The EOC (End-of-Conversion) pin on the TLV2543CDBR provides a hardware handshake signal indicating conversion status. It transitions low after the final I/O CLOCK falling edge and returns high once the 12-bit result is latched into the output register. Host processors use EOC to trigger data reads or manage interrupt-driven sampling - ensuring accurate timing without polling or fixed delays. EOC also enables synchronous multi-device coordination when sharing a serial bus.
TLV2543CDBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 66k
- Number of Inputs:
- 11
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV2543CDBR FAQ
1.How can I place an order for TLV2543CDBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2543CDBR 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 TLV2543CDBR reliable?
The price and inventory of TLV2543CDBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2543CDBR is usually 5 days.
3.What payment methods are accepted for TLV2543CDBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2543CDBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2543CDBR?
TLV2543CDBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2543CDBR 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 TLV2543CDBR?
For technical support, including TLV2543CDBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2543CDBR requirements.
6.How does Aetrix verify that TLV2543CDBR is sourced from the original manufacturer or authorized distributors?
All TLV2543CDBR 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 TLV2543CDBR meets industry standards.
7.What is the process for return or replacement of TLV2543CDBR?
All TLV2543CDBR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2543CDBR, 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 TLV2543CDBR part is unused and in its original packaging.
Return procedure for TLV2543CDBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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