TLV2543IN - 12-Bit 66 kSPS 11-Channel SAR ADC | Texas Instruments
料号： TLV2543IN ✓ 量产中TLV2543IN 概述
An ADC is an analog-to-digital converter, a category of data-acquisition and signal-processing ICs that transforms a continuously varying voltage into a numeric code. A SAR ADC compares the sampled input against an internal DAC through a sequence of binary trials, producing one result at the end of each conversion. The TLV2543IN belongs to the switched-capacitor SAR ADC family and provides 11 channels plus serial control for compact, multiplexed measurement systems.
The principal specifications verified for the TLV2543IN are its 12-bit resolution, 66 kSPS conversion rate, 11-channel input count, and 10 µs conversion time. Programmable power-down helps reduce activity when conversions are not required, while MSB/LSB-first selection provides interface flexibility. Three built-in self-test modes support device-level verification routines, and the inherent sample-and-hold architecture simplifies acquisition sequencing across multiple analog inputs.
The device uses serial control and serial data transfer rather than a parallel data bus. Its control interface includes chip select, input/output clock, and data input signals, as described for the TLV2543 family. This interface keeps the pin count manageable in the 20-pin PDIP package and suits systems where the ADC shares a serial bus with other peripheral devices. Because the available source snippets do not state the reference-voltage range, input range, DNL, INL, or power specifications, those values require confirmation in the manufacturer datasheet before final circuit design.
Typical applications include multichannel industrial process measurement, sensor multiplexing, laboratory data acquisition, battery or supply monitoring, and embedded control systems that require a compact serial ADC. The 11-channel arrangement is particularly useful when several analog quantities must be sampled with one converter. The 66 kSPS rate supports general-purpose acquisition rather than the very high sampling rates normally associated with waveform capture.
Designers should verify the complete pinout, analog input range, reference requirements, settling behavior, and serial timing from the manufacturer datasheet before layout. Input filtering, source impedance, grounding, and decoupling also require application-specific review because those values are not present in the verified source excerpts. PCB compatibility must be confirmed by comparing the 20-pin PDIP footprint and signal functions rather than relying only on the device description.
This page consolidates the verified 12-bit, 66 kSPS, 11-channel architecture, package information, interface options, and sourced availability information for TLV2543IN. It also separates verified facts from missing electrical details and explains the limits of the available drop-in alternative data, helping engineers plan a safe datasheet-verified design and procurement review.
直接替换替代料： TLV2543IN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TLV2543IN （相同外形与封装尺寸） ——差异在于 Architecture, Built-In Self-Test, Package, Sample-and-Hold.
TLV2543CN
✅ 直接替换联系询价
查看数据手册 →TLC1543CN
✅ 直接替换📋 参考替代料（不在目录中）
TLC1543IN
✅ 直接替换📋 参考替代料（不在目录中）
TLV2543IN 最大额定值与电气特性
| Converter Type | 12-bit successive-approximation analog-to-digital converter |
| 分辨率 | 12 bit |
| Maximum Sampling Rate | 66 kSPS |
| Conversion Time | 10 us |
| Number of Analog Input Channels | 11 channels |
| Architecture | Switched-capacitor successive-approximation |
| Sample-and-Hold | Inherent sample-and-hold |
| Output Interface | Serial output |
| Data Format | MSB/LSB first selectable |
| Power-Down | Programmable |
| Built-In Self-Test | 3 built-in self-test modes |
| 封装 | 20-pin PDIP (N) |
| 引脚数 | 20 pins |
| 安装类型 | Through-hole |
| Control Interface | Serial control with chip select, I/O clock, and data input |
TLV2543IN 20-pin pdip (n) 引脚配置指南
TLV2543IN（20-pin pdip (n) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： TLV2543IN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV2543IN 适用于 6 应用s: Industrial Sensor Multiplexing, Laboratory Data Acquisition, Embedded Control Monitoring, Battery and Supply Monitoring, Instrumentation and Test Equipment, Automotive Sensor Interface.
Industrial Sensor Multiplexing
The TLV2543IN fits industrial sensor multiplexing because it combines 11 analog input channels with 12-bit resolution and a 66 kSPS conversion rate in a 20-pin PDIP package. A controller can cycle among pressure, temperature, level, and position sensors through the converter’s channel set, while serial output limits the number of signal lines required on the board. Its 10 µs nominal conversion time supports responsive process monitoring without requiring a high-speed waveform ADC. The verified 11-channel count and SAR architecture make channel multiplexing practical, but source impedance, acquisition settling time, input range, and the sampling sequence must be confirmed in the manufacturer datasheet. Front-end protection and filtering remain important because the verified excerpts do not specify the allowable analog input range or common-mode limits.
Laboratory Data Acquisition
The TLV2543IN is suitable for compact laboratory data-acquisition equipment that scans up to 11 analog channels and exchanges results through a serial bus. Its 12-bit resolution provides 4,096 digital codes, while the 66 kSPS rate supports general-purpose measurement rather than high-bandwidth oscilloscope acquisition. Programmable power-down can reduce activity between measurement bursts, and the three built-in self-test modes can assist system verification. The inherent sample-and-hold function simplifies the acquisition concept, although the verified data does not specify input bandwidth, settling time, or noise performance. A laboratory instrument designer should therefore verify acquisition timing and analog front-end requirements against the full Texas Instruments datasheet before selecting external buffers or amplifiers.
Embedded Control Monitoring
The TLV2543IN is appropriate for embedded control systems that must monitor multiple analog quantities alongside a microcontroller or programmable controller. The 11-channel SAR ADC can replace several separate single-channel converters, while serial output and selectable MSB/LSB-first data transfer provide flexibility for different host peripherals. A 66 kSPS aggregate conversion rate is appropriate for supervisory control loops, status monitoring, and setpoint measurement. Its 20-pin PDIP package favors leaded assembly and repairability rather than compact surface-mount construction. The design must still account for reference stability, digital supply sequencing, analog grounding, and the exact input limits, none of which are quantified in the supplied verified excerpts.
Battery and Supply Monitoring
The TLV2543IN can serve as the measurement element in battery, power-supply, or power-sequencing systems that need several voltage observations through one converter. Its 11 inputs permit monitoring of multiple rails or divider-derived voltages, while programmable power-down is useful in low-duty-cycle systems. The 12-bit resolution corresponds to 4,096 code levels, and the 66 kSPS rate is more than adequate for supervisory voltage checks. Built-in self-test modes may assist production diagnostics and periodic system checks. However, the verified excerpts do not state the input or reference range, leakage behavior, supply requirements, or power-down current, so the divider design and source impedance must be recalculated from the complete manufacturer datasheet.
Instrumentation and Test Equipment
The TLV2543IN fits instrumentation equipment requiring multiple analog measurements but only moderate conversion speed. Its 12-bit SAR conversion, 10 µs conversion time, and 66 kSPS maximum sampling rate are useful for digital meters, process analyzers, and automated test fixtures. Serial output keeps the interface compact, and programmable power-down can support energy-conscious portable instruments. The three built-in self-test modes add diagnostic value for production alignment or field troubleshooting. Engineers must still validate accuracy using the manufacturer’s integral and differential nonlinearity data, neither of which appears in the verified search excerpts. They should also confirm allowed input impedance and acquisition settling before choosing high-impedance sensor networks or sample-and-hold components.
Automotive Sensor Interface
The TLV2543IN may be considered for non-safety automotive sensor-interface designs because the TLV2543I grade is characterized from -40°C to 85°C and supports 11 analog channels. It can sample multiple vehicle sensors through one serial ADC, while the 66 kSPS rate supports non-safety monitoring functions such as status, position, or supply tracking. The 12-bit resolution and selectable data order simplify integration with embedded controllers. However, the verified excerpts do not establish AEC-Q100 qualification, automotive transient immunity, supply range, or fault diagnostics beyond self-test, so this use case should not be treated as an automotive-qualified recommendation without full datasheet and qualification review.
工程参考数据： TLV2543IN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLV2543CN | TLC1543CN | TLC1543IN |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | PDIP-20 (N) | PDIP-20 (N) | PDIP-20 (N) | PDIP-20 (N) |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit |
| Temperature Grade | Industrial: -40C to +85C | Commercial: 0C to +70C | Commercial: 0C to +70C | Industrial: -40C to +85C |
关键差异点
- Wider characterized temperature range （对比 TLV2543CN)
- Higher verified sampling rate within the closest same-family alternative （对比 TLC1543CN)
- Explicit industrial-grade characterization （对比 TLC1543CN)
设计说明
Do not release the PCB footprint from the distributor package description alone. The verified sources confirm a 20-pin PDIP (N), but they do not expose the manufacturer pin table. Download the current Texas Instruments datasheet, compare every pin function and no-connect status, and confirm row spacing, hole diameter, and pin numbering. Because the interface is serial, an incorrect CS, I/O clock, or data-input assignment can prevent conversion even when the package mechanically fits.
Treat the reference, analog inputs, and ground return as precision signal paths. The verified material does not provide input impedance, acquisition time, reference range, or allowed common-mode voltage, so source impedance and capacitor sizing cannot be finalized from the available excerpts. Check the manufacturer acquisition-time graph, use short traces over a continuous ground plane, and keep switching-clock and digital return currents away from the analog input and reference nodes.
Verify the exact analog and digital supply ranges, sequencing requirements, and power-down current in the manufacturer datasheet before enabling the converter. The TLV2543IN’s programmable power-down can reduce activity between samples, but the verified sources provide no shutdown-current figure. Decouple each applicable supply close to its package pins and follow the datasheet’s recommended capacitor values and ESR constraints; substitute capacitors only after checking stability requirements.
Do not assume that TLV2543CN or a TLC1543-family device is automatically interchangeable because all are described as related 12-bit, multichannel serial ADCs. The verified excerpts do not provide complete pin assignments, timing diagrams, supply limits, or reference requirements. Compare pin names, serial clock polarity, chip-select behavior, MSB/LSB ordering, acquisition timing, and maximum clock rate, then validate accuracy and power behavior on hardware before production release.
合规信息
The verified excerpts do not provide compliance declarations. The industrial temperature characterization of the TLV2543I grade is not equivalent to AEC-Q100 qualification, and no AEC-Q100 statement should be inferred.