TLV1543CN - 10-Bit 200 kSPS 11-Channel SAR ADC | Texas Instruments
料号： TLV1543CN ✓ 量产中TLV1543CN 概述
An ADC is an interface IC that converts an analog voltage into a digital code for processing, measurement, or control. In the product hierarchy, the TLV1543CN is an ADC, a data-converter IC, and ultimately a semiconductor used to bridge analog sensors to digital microcontrollers or embedded systems. Its 11 analog input channels allow related measurements to be selected through the serial interface while retaining the accuracy associated with a 10-bit converter.
Key features include 11 analog input channels, 10-bit resolution, a 200 kSPS conversion rate, and a three-state serial interface containing chip select, input-output clock, address input, and data output. The built-in self-test provides three modes for checking converter operation, while the inherent sample-and-hold function supports acquisition of successive analog measurements. Operation from a 3.3 V supply also simplifies integration with modern 3.3 V digital systems.
The TLV1543CN uses switched-capacitor, successive-approximation conversion. Successive-approximation ADCs determine a digital result by testing successive bit positions, which provides a practical balance between conversion speed, resolution, power use, and implementation complexity. Differential high-impedance reference inputs are particularly useful when the measured quantity is proportional to a reference voltage or when analog and digital noise must be separated.
Typical applications include industrial sensor acquisition, battery monitoring, temperature measurement, potentiometer reading, process-control instrumentation, and embedded control systems. The 11-channel arrangement is useful when several slowly changing analog signals must be scanned, while the serial interface allows the converter to share communication wiring with a host processor.
Designers should pay particular attention to reference stability, source impedance, acquisition timing, and serial-clock timing. The 3.3 V supply and analog, reference, and digital connections must be laid out so switching activity on the digital interface does not degrade the accuracy of the sampled analog signals.
This product page consolidates the verified TLV1543 features, package information, source links, same-footprint replacement candidates, and application guidance into one engineering reference. It is intended to help designers distinguish documented TLV1543-family options while avoiding unsupported assumptions about electrical details that were not supplied in the retrieved source data.
直接替换替代料： TLV1543CN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
TLC1543CN
✅ 直接替换📋 参考替代料（不在目录中）
TLC1543IN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLC1543MN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV1543IN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV1543MN
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV1543CN 最大额定值与电气特性
| ADC Type | 10-bit switched-capacitor successive-approximation ADC |
| 分辨率 | 10 bit |
| Conversion Rate | 200 kSPS |
| Number of Analog Input Channels | 11 channels |
| 电源电压 | 3.3 V |
| 输出类型 | Serial output |
| Control Interface | 4-wire serial interface |
| Chip Select Signal | CS |
| Clock Signal | I/O CLOCK |
| Address Signal | ADDRESS |
| Data Output Signal | DATA OUT |
| Built-In Self-Test Modes | 3 modes |
| Sample-and-Hold | Inherent sample-and-hold |
| Reference Inputs | Differential high-impedance reference inputs |
| 封装 | 20-pin PDIP (N) |
| 引脚数量 | 20 pins |
| 安装类型 | Through-hole PDIP |
| Compatibility | Pin-compatible with TLC1543 |
TLV1543CN 20-pin pdip (n) 引脚配置指南
TLV1543CN（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： TLV1543CN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV1543CN 适用于 6 应用s: Industrial Sensor Acquisition, Battery and Power Monitoring, Temperature and Potentiometer Measurement, Process Control Instrumentation, Embedded Data Acquisition, Portable Measurement Device.
Industrial Sensor Acquisition
The TLV1543CN fits an industrial sensor-acquisition module that must scan as many as 11 analog inputs while retaining 10-bit measurement resolution. Its documented 200 kSPS conversion rate supports relatively fast updates, and the inherent sample-and-hold function helps isolate each measurement during conversion. The 11 single-ended input channels reduce the number of separate converter packages required for related sensor nodes. Because the verified material does not state the operating-temperature range, input range, or absolute accuracy, these limits must be checked against the plant environment before deployment. The host controller should use the documented CS, I/O CLOCK, ADDRESS, and DATA OUT interface, while analog and digital return paths are routed to minimize conversion disturbance.
推荐
Battery and Power Monitoring
The TLV1543CN is suitable for a multi-cell monitoring design that compares several battery or power-rail voltages through 11 analog input channels. Its 10-bit resolution and 200 kSPS rate provide adequate throughput for supervisory measurements, while differential high-impedance reference inputs support ratiometric conversion, where the measured result scales with the reference. The converter therefore fits designs that need to separate an analog measurement from supply and logic noise. Designers must still establish the allowed input range, sampling interval, reference accuracy, and error budget. A microcontroller can issue the address and clock signals while reading DATA OUT, and the self-test modes provide a useful way to monitor converter operation during diagnostics.
推荐
Temperature and Potentiometer Measurement
The TLV1543CN can serve in a multi-channel temperature-control or front-panel positioning system by converting conditioned analog voltages from up to 11 sensors. A 10-bit SAR converter provides 1,024 discrete code levels, while the 200 kSPS throughput allows measurements to be refreshed rapidly enough for many monitoring loops. The serial interface preserves a compact connection to a host processor, and the inherent sample-and-hold function supports repeatable acquisition. For potentiometer position measurement, the reference and signal paths must remain ratiometric if mechanical tolerance and temperature drift are to be rejected. Sensor excitation, filtering, input protection, and the converter's unspecified absolute accuracy should be validated separately before the measurement results are treated as precision specifications.
推荐
Process Control Instrumentation
The TLV1543CN is appropriate for distributed process-control instrumentation where a controller must acquire multiple analog process variables through a compact serial interface. The 11-channel architecture supports pressure, level, position, or other slow-to-moderately-fast analog measurements, while 200 kSPS provides ample conversion throughput for many closed-loop monitoring tasks. Differential high-impedance reference inputs facilitate ratiometric scaling and can help isolate analog circuitry from logic and supply noise. The host processor selects channels with ADDRESS and reads conversion data from DATA OUT using CS and I/O CLOCK. Before finalizing a control design, verify the missing input-voltage, reference-voltage, accuracy, noise, and temperature specifications so that control-loop margins are based on verified limits.
推荐
Embedded Data Acquisition
The TLV1543CN supports an embedded data-acquisition subsystem where analog sensor values must be converted into a compact serial stream for a microcontroller. Its 10-bit resolution provides 1,024 codes, and the 200 kSPS rate allows 11 channels to be scanned without an excessively slow update interval. The four-wire serial interface minimizes the number of host pins compared with a parallel ADC, which is valuable in space-constrained embedded equipment. The three built-in self-test modes can be incorporated into startup or diagnostic routines, while the inherent sample-and-hold function assists acquisition control. Firmware must observe the documented addressing and clock sequence, and hardware designers should preserve clean reference and analog return paths to avoid converting digital switching noise into measurement error.
推荐
Portable Measurement Device
The TLV1543CN can be integrated into a portable measurement device that combines several analog probes with a serial host processor. Its 3.3 V supply operation aligns with modern embedded systems, and the 20-pin PDIP package favors through-hole assembly or prototyping. The 11-channel SAR converter accepts a mix of conditioned probe signals, while 200 kSPS throughput permits responsive sampling. For a battery-powered design, the total conversion and interface power must be reviewed against the part's verified power-consumption specification, which was not included in the supplied data. Low-power operation should therefore be validated rather than inferred. Mechanical protection, probe settling, reference stability, and calibrated accuracy are additional constraints that remain outside the scope of the verified TLV1543 feature list.
推荐
推荐产品汇总
工程参考数据： TLV1543CN ——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 | TLC1543CN | TLC1543IN | TLC1543MN | TLV1543IN | TLV1543MN |
|---|---|---|---|---|---|---|
| Package | 20-pin PDIP (N) | 20-pin PDIP (N) | 20-pin PDIP (N) | 20-pin PDIP (N) | 20-pin PDIP (N) | 20-pin PDIP (N) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Analog Input Channels | 11 channels | 11 channels | 11 channels | 11 channels | 11 channels | 11 channels |
| Conversion Architecture | Switched-capacitor successive-approximation | Successive-approximation | Successive-approximation | Successive-approximation | Switched-capacitor successive-approximation | Switched-capacitor successive-approximation |
| TLC1543 Pin Compatibility | Yes | Legacy TLC1543 implementation | TLC1543-family implementation | TLC1543-family implementation | Yes | Yes |
关键差异点
- Three integrated self-test modes support converter diagnostics （对比 TLC1543CN)
- Differential high-impedance reference architecture （对比 TLC1543CN)
- New-design feature set in the same 20-pin PDIP footprint （对比 TLC1543CN)
设计说明
Use a stable 3.3 V supply and place the required decoupling capacitors close to the device power pins as directed by the official TLV1543 datasheet. The retrieved source confirms 3.3 V operation but does not provide a numeric supply-current limit, quiescent current, or permitted operating range. Those values should be extracted from the applicable datasheet revision before calculating battery life or confirming sequencing margin.
Keep the analog inputs, differential reference connections, analog return, and digital interface in appropriately separated regions. The TLV1543's differential high-impedance reference inputs support ratiometric measurement and isolation from logic noise, but that benefit depends on careful return-current routing. Route CS, I/O CLOCK, ADDRESS, and DATA OUT away from sensitive analog nodes and use a quiet ground strategy around the converter.
Do not assume that a shared package proves that every TLC1543 or TLV1543 ordering option is automatically interchangeable. The verified sources explicitly support TLC1543 pin compatibility and the 20-pin PDIP outline, but temperature grade, timing, test-mode behavior, and revision-specific limits may differ. Before replacing TLV1543CN, compare the exact ordering code, datasheet revision, serial timing, reference requirements, and operating-temperature grade.
Treat the serial interface as a controlled digital interface even though the converter is analog. Ensure the host supplies valid ADDRESS, CS, and I/O CLOCK timing and samples DATA OUT at the correct point. Add series termination or other edge-control measures only after checking the actual clock rate and board topology; the verified information confirms a 200 kSPS converter rate but does not define the maximum host clock frequency.
合规信息
The supplied official-page and distributor snippets do not explicitly state TLV1543CN RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been assumed.