TLV2543CN - 12-Bit 11-Channel 66 kSPS ADC | Texas Instruments
MPN： TLV2543CN ✗ 停產TLV2543CN 概覽
An analog-to-digital converter is an ADC, a mixed-signal semiconductor that converts a continuously varying analog voltage into a numeric code for processing, measurement, logging, or control. The TLV2543 belongs to the successive-approximation ADC family and the broader data-converter and signal-processing IC hierarchy. Its 12-bit resolution provides 4,096 quantization levels, while its serial interface reduces the number of signal lines required when compared with a parallel-output ADC.
The headline capabilities include 12-bit resolution, an 11-channel analog input multiplexer, and a maximum throughput of 66 kSPS. The device supports both MSB-first and LSB-first serial output formats, giving the host controller flexibility in clocking and data processing. Programmable power-down helps reduce consumption when measurements are intermittent, while three built-in self-test modes support diagnostic checks of the converter and its serial interface.
Internally, the switched-capacitor SAR architecture compares the sampled input against a generated reference during successive conversion steps. An inherent sample-and-hold stage isolates the selected input during conversion, while the 11-to-1 multiplexer allows one converter core to service multiple analog sources. The manufacturer identifies the device as a 1 SAR ADC with 11 input channels and a serial control/data interface.
Typical uses include industrial process monitoring, environmental sensing, instrumentation, laboratory measurement, and embedded control systems. An ADC can be used when the system must repeatedly select one of several sensors, convert the selected voltage, and transfer the resulting code over a compact serial bus. The TLV2543CN is particularly relevant where 12-bit resolution is sufficient but the number of available pins or PCB area is constrained.
Designers should confirm the actual reference voltage, analog input range, acquisition timing, digital interface levels, and operating-temperature limits against the manufacturer datasheet before layout. Because this part is a multiplexed converter, source impedance, sampling charge, settling time, and protection-network capacitance can affect conversion accuracy. Decouple the supply and reference rails locally, keep analog routing away from fast digital signals, and account for the 10 µs conversion time when scheduling scans.
This page consolidates the verified 12-bit, 66 kSPS, 11-channel, serial-output, power-down, and self-test characteristics with package information, application guidance, and a careful drop-in-replacement assessment. Because verified pricing, detailed electrical limits, and a complete pin map were not supplied, those items are explicitly marked for verification rather than inferred.
直接替換替代品，適用於 TLV2543CN — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLV2543CN （相同外形與佔位） — 差異在於 Architecture, Built-In Self-Test, Package, Sample-and-Hold.
TLV2543CNE4
✅ 直接替換📋 參考替代品（不在目錄中）
TLV2543IN
✅ 直接替換聯絡詢價
查看資料表 →TLV2543C
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV2543I
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV2543CN 最大額定值與電氣特性
| 解析度 | 12 bit |
| Conversion Rate | 66 kSPS |
| Analog Input Channels | 11 channels |
| Architecture | 1 SAR |
| Converter Architecture | Switched-capacitor successive approximation |
| Conversion Time | 10 us |
| Output Format | Serial |
| Serial Data Format | MSB/LSB first |
| Power-Down | Programmable |
| Built-In Self-Test | 3 modes |
| Sample-and-Hold | Inherent |
| Control Inputs | 3 control inputs: CS, I/O CLOCK, and DATA INPUT |
| 封裝 | 20-pin PDIP |
| 安裝類型 | Through-hole |
TLV2543CN 20-pin pdip 腳位配置指南
TLV2543CN（20-pin pdip 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TLV2543CN.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLV2543CN 適用於 6 應用s: Industrial Process Monitoring, Environmental Sensor Acquisition, Laboratory Instrumentation, Embedded Control Systems, Power Supply Diagnostics, Data Logging and Measurement.
Industrial Process Monitoring
The TLV2543CN fits industrial process monitoring because its 11 analog input channels can scan pressure, temperature, level, or current-sense signals through one 12-bit converter. Its 66 kSPS conversion rate and 10 us conversion time support repeated measurements without requiring a separate ADC for every channel. The device would normally sit beside a controller or data logger, with CS, I/O CLOCK, and DATA INPUT connected to the host serial interface. The engineering trade-off is shared conversion circuitry: source impedance and channel settling must be checked so the sample-and-hold capacitor acquires the intended voltage accurately.
推薦
Environmental Sensor Acquisition
The TLV2543CN is suitable for environmental monitoring systems that combine multiple sensor outputs into a compact embedded controller. Eleven multiplexed inputs reduce analog-converter count, while 12-bit resolution provides 4,096 codes for representing sensor voltages. A typical implementation selects each sensor with the address interface, initiates conversion, clocks out the result, and sends the code to a logger. Compared with a higher-resolution converter, the TLV2543CN offers a simpler and lower-throughput acquisition stage, so applications requiring very small measurement increments may need a different ADC architecture.
推薦
Laboratory Instrumentation
The TLV2543CN can serve as the analog front end of laboratory instrumentation that scans several low-frequency measurement channels. Its 12-bit SAR conversion, 66 kSPS throughput, and serial output are practical for control panels, calibration equipment, and compact data-acquisition modules. The three built-in self-test modes add value for production diagnostics because the instrument can exercise internal conversion paths without requiring all external sensors to be present. Designers should verify the input range and reference voltage from the datasheet, because those limits determine whether sensor outputs need attenuation, amplification, or bipolar-input conditioning.
推薦
Embedded Control Systems
The TLV2543CN is appropriate for embedded control systems that monitor analog feedback from multiple actuators or power stages. Its serial interface reduces pin count compared with a parallel ADC, leaving more microcontroller I/O for control signals and communications. The 11-to-1 input multiplexer allows one converter to observe several system nodes sequentially, and programmable power-down can reduce consumption during inactive intervals. The main design consideration is timing: the host must allow adequate acquisition and conversion intervals, especially when changing channels, before interpreting the returned 12-bit code as a settled measurement.
推薦
Power Supply Diagnostics
The TLV2543CN can monitor several power-system voltages when diagnostic resolution and sequencing matter more than very high conversion speed. Eleven inputs allow a controller to observe supply rails, bias levels, or divider-scaled voltages using a shared 12-bit SAR core. At 66 kSPS, the converter can refresh diagnostic data quickly enough for supervisory loops while consuming less board area than multiple dedicated converters. The trade-off is that power-rail monitoring accuracy also depends on resistor-divider ratios, reference stability, grounding, and the analog input limits documented by Texas Instruments.
推薦
Data Logging and Measurement
The TLV2543CN is well matched to compact data loggers that periodically sample several external analog quantities. Its 66 kSPS maximum rate supports faster acquisition than a slow slow-rate meter while retaining 12-bit resolution, and serial output keeps the interface economical on a microcontroller or programmable logic controller. The converter can scan channels, transfer each result, and enter a programmed power-down state between records. For accurate logging, the system should preserve the same channel order in software and hardware, account for input settling after multiplexer transitions, and store calibration information alongside each converted value.
推薦
推薦產品摘要
工程參考資料，適用於 TLV2543CN — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLV2543CNE4 | TLV2543IN | TLV2543C | TLV2543I |
|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Conversion Rate | 66 kSPS | 66 kSPS | 66 kSPS | 66 kSPS | 66 kSPS |
| Analog Input Channels | 11 channels | 11 channels | 11 channels | 11 channels | 11 channels |
| Architecture | 1 SAR | 1 SAR | 1 SAR | 1 SAR | 1 SAR |
| Conversion Time | 10 us | 10 us | 10 us | 10 us | 10 us |
| Output Format | Serial, MSB/LSB first | Serial, MSB/LSB first | Serial, MSB/LSB first | Serial, MSB/LSB first | Serial, MSB/LSB first |
| Power-Down | Programmable | Programmable | Programmable | Programmable | Programmable |
| Built-In Self-Test | 3 modes | 3 modes | 3 modes | 3 modes | 3 modes |
主要差異化特點
- Integrated multichannel acquisition (對比TLV2543CNE4)
- Conversion throughput (對比TLV2543IN)
- Diagnostic and low-power features (對比TLV2543C)
設計說明
Do not treat the 10 us conversion time as the complete acquisition time for every source. The shared sample-and-hold capacitor must charge sufficiently from the selected input, and long RC networks at the pin can prevent the voltage from settling to the required accuracy. Verify the manufacturer’s acquisition-time conditions and source-impedance limits, especially when switching directly between high-impedance sensors.
Keep the analog input traces short and route them away from the CS, I/O CLOCK, and DATA INPUT traces that carry fast serial signals. Place input filtering or protection components close to the converter pins, and avoid long parallel runs between analog and digital paths. Grounding, reference routing, and bypass-capacitor placement should follow the layout shown in the manufacturer datasheet because multiplexer settling depends on a clean return path.
Use the manufacturer’s prescribed supply and reference bypass capacitors, placed directly beside their associated pins. The verified snippets do not provide capacitor values, so those values must not be guessed. Decoupling requirements should be implemented with low-ESR ceramic capacitors and a compact return path; excessive capacitor or protection-network loading at an analog input can degrade acquisition accuracy even when the converter’s nominal sample-and-hold function is unchanged.
合規資訊
The supplied verified excerpts identify the TLV2543C and TLV2543I families but do not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is marked not applicable because the verified material does not identify this part as an automotive-qualified option.