TLC2543CDBG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TLC2543CDBG4 is a 12-bit successive-approximation ADC with 11 analog input channels and a serial SPI interface sampling at up to 66 kSPS in a 20-pin SSOP package. Maximum conversion time is 10 µs with 0.0244% linearity error and 5.5 V analog input range. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TLC2543CDBG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TLC2543CDBG4?
- 11-channel 12-bit SAR ADC with 66 kSPS throughput and programmable MSB/LSB-first serial output, simplifying multi-sensor data acquisition with a single IC
- 10 µs maximum conversion time and 0.0244% linearity error support accurate measurements across 11 analog inputs up to 5.5 V
- 20-pin SSOP package with JESD-609 e4 (Pb-free) compliance and SPI-compatible serial interface for direct microcontroller integration
What is TLC2543CDBG4 used for?
The TLC2543CDBG4 is used in multi-channel data-acquisition systems, industrial process monitors, and portable test equipment where 11 analog signals must be digitized to 12-bit resolution from a single 5 V supply. Its serial SPI interface and programmable MSB/LSB output order simplify firmware integration with PIC, AVR, and ARM microcontrollers, while the 66 kSPS throughput is sufficient for slowly varying sensor signals such as temperature, pressure, and current.
What are the specifications of TLC2543CDBG4?
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.5V |
| Conversion Time-Max | 10 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Linearity Error-Max (EL) | 0.0244% |
| Number of Analog In Channels | 11 |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Output Bit Code | BINARY, 2'S COMPLEMENT BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.066MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.30 |
Where can I find the TLC2543CDBG4 datasheet?
TLC2543CDBG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TLC2543CDBG4?
Compatible alternatives and drop-in replacements for TLC2543CDBG4:
12-Bit, 1 Func, 11 Channel, Serial Access, CMOS, PDSO20
ADC, Successive Approximation, 12-Bit, 1 Func, 11 Channel, Serial Access, CMOS, PDSO20
Frequently Asked Questions
How many analog channels can TLC2543CDBG4 digitize, and at what resolution and sample rate?
The TLC2543CDBG4 digitizes up to 11 analog input channels at 12-bit resolution with a maximum throughput of 66 kSPS. Each channel is selected via the SPI command word, and the maximum conversion time per sample is 10 µs. The 0.0244% linearity error corresponds to approximately 1 LSB at 12-bit resolution, making it suitable for precision multi-channel sensor acquisition without external multiplexers.
For an 11-sensor industrial monitoring board, how does TLC2543CDBG4 reduce wiring complexity compared to parallel-interface ADCs?
TLC2543CDBG4 uses a 4-wire SPI serial interface (CS, CLK, DATA IN, DATA OUT) shared across all 11 input channels, requiring only 4 signal traces to connect to a microcontroller regardless of channel count. A parallel 12-bit ADC with 11 input multiplexer would require 12 data lines plus address lines, adding 10 to 15 PCB traces per converter. This SPI approach frees GPIO pins on the host microcontroller and simplifies board routing in space-constrained industrial sensor modules.
When is TLC2543CDBG4 a suitable alternative to separate ADC-plus-multiplexer combinations for 8-channel to 11-channel designs?
Replacing a discrete SAR ADC plus an 8:1 or 16:1 analog multiplexer with TLC2543CDBG4 integrates both functions into a single 20-pin SSOP package. This eliminates at least 1 multiplexer IC, reduces passive component count by 4 to 8 bypass capacitors, and removes the switching glitch artifacts that external CMOS multiplexers introduce on the ADC reference input. For 12-bit applications sampling below 66 kSPS, the integrated solution offers lower BOM cost and higher channel-to-channel consistency.
What reference voltage options does TLC2543CDBG4 support, and how does this affect full-scale input range?
TLC2543CDBG4 provides dedicated REF+ and REF– pins that set the full-scale analog input range independently of the supply voltage. With REF+ at 5 V and REF– at 0 V, the full-scale range spans 0 V to 5 V with 1.22 mV per LSB at 12-bit resolution. Reducing REF+ to 2.5 V halves the full-scale range to 0 V to 2.5 V and improves effective resolution to 0.61 mV per LSB, enabling higher-accuracy measurements of low-level sensor signals such as 0 V–2 V thermocouple outputs.
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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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