TLV2542ID - 12-Bit 200kSPS Dual SAR ADC | Texas Instruments
料号： TLV2542ID ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TLV2542ID 概述
An ADC is an analog-to-digital converter, a data-conversion IC that samples a continuously varying voltage and produces a corresponding numeric code. A successive-approximation-register, or SAR, ADC determines each conversion result through a sequence of internal comparisons. SAR ADCs are commonly used where predictable sampling, moderate resolution, low power, and compact serial interfaces are more important than very high conversion throughput. The TLV2542 belongs to the broader ADC data-converter and signal-processing semiconductor hierarchy.
The TLV2542ID features 12-bit resolution, 140 kSPS or 200 kSPS maximum throughput options, and specified integral nonlinearity and differential nonlinearity of ±1 LSB maximum. Its signal-to-noise-plus-distortion ratio is specified at 72 dB, while the spurious-free dynamic range is 85 dB. The serial interface supports direct connection to microcontrollers, DSPs, and TMS320-compatible systems up to 10 MHz, reducing the need for external interface logic.
The converter uses a single analog supply, with analog input and digital interface functions integrated into a small package. Automatic power-down helps reduce consumption when conversions are not continuously required. The dual-channel architecture is useful for monitoring two independent signals, while the 12-bit code provides approximately 4096 digital levels for each channel. Exact input-range, reference, and absolute-input details must be confirmed in the manufacturer datasheet before final design release.
Typical applications include industrial process measurement, battery and power-system monitoring, portable instrumentation, sensor signal acquisition, and embedded DSP or MCU data logging. The serial interface reduces pin count compared with many parallel ADCs, while the dual input count allows one converter to serve two measurements. Designers should account for source impedance, sampling dynamics, reference accuracy, analog grounding, and serial-interface timing.
A key implementation consideration is the relationship between analog signal conditioning and ADC accuracy. The front-end should present a low-impedance source, provide suitable filtering for the measurement bandwidth, and keep analog routing away from noisy digital clock and switching signals. This page combines verified product information, distributor availability, application guidance, and replacement constraints for practical engineering review.
直接替换替代料： TLV2542ID ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TLV2542CDGKR
✅ 直接替换📋 参考替代料（不在目录中）
TLV2542ID 最大额定值与电气特性
| 分辨率 | 12 bit |
| Input Channels | 2 channels |
| Conversion Architecture | Successive-approximation register (SAR) |
| Maximum Throughput | 140 kSPS or 200 kSPS |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Output Interface | Serial output, SPI/DSP-compatible |
| Interface Clock | Up to 10 MHz |
| Integral Nonlinearity | +/-1 LSB maximum |
| Differential Nonlinearity | +/-1 LSB maximum |
| SINAD | 72 dB |
| Spurious-Free Dynamic Range | 85 dB |
| Built-In Conversion Clock | Yes |
| Chip Select | Yes |
| Automatic Power-Down | Supported |
| 工作温度 | -40 C to +85 C |
| 封装 | 8-pin SOIC |
TLV2542ID 8-pin soic 引脚配置指南
TLV2542ID（8-pin soic 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： TLV2542ID.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV2542ID 适用于 6 应用s: Industrial Sensor Acquisition, Battery-Powered Monitoring, DSP-Based Signal Acquisition, Portable Instrumentation, Process Control Monitoring, Embedded Data Logging.
Industrial Sensor Acquisition
The TLV2542ID fits industrial sensor acquisition when two analog signals must be digitized in a compact embedded controller. Its 12-bit resolution provides up to 4096 code levels, while the 140 kSPS or 200 kSPS throughput supports fast monitoring without requiring a parallel ADC bus. Place conditioning buffers or filters ahead of the inputs, maintain the documented input limits, and route the serial interface away from high-current switching paths. The main design tradeoff is that the supplied data does not confirm input range or reference limits, so the analog front end must be checked against the official datasheet before release.
推荐
Battery-Powered Monitoring
The TLV2542ID is relevant to battery-powered monitoring because it operates from a single 2.7 V to 5.5 V supply and includes automatic power-down functionality. Two channels can monitor supply-related or sensor-related voltages with a 12-bit conversion result, while the serial interface reduces MCU pin requirements. Use a low-leakage voltage divider, controlled sensor enable sequence, and duty-cycled conversions when extending battery life. The supplied data does not provide active current or standby current, so current consumption must be obtained from the manufacturer datasheet before making a battery-life estimate.
推荐
DSP-Based Signal Acquisition
The TLV2542ID is suitable for DSP-based acquisition because its serial output is described as SPI/DSP-compatible and TMS320 compatible up to 10 MHz. A DSP can control chip select and serial clock, receive the converted code, and process the two input channels without requiring a wide parallel data bus. The 12-bit resolution and 200 kSPS maximum throughput suit moderate-bandwidth measurement tasks. Firmware and hardware timing should be validated against the serial protocol, and the analog source impedance and reference arrangement should be designed from the complete datasheet.
推荐
Portable Instrumentation
The TLV2542ID can support compact portable instrumentation that measures two low-bandwidth analog quantities and sends results over a serial bus. Its 8-pin SOIC package helps reduce board area, and the 12-bit resolution is suitable for many status, level, and sensor measurements where higher resolution is not essential. Use low-power modes, short conversion bursts, and careful analog grounding to preserve battery life. Because input range, supply current, and reference details are not included in the verified data, the final instrumentation design should be checked against the manufacturer datasheet.
推荐
Process Control Monitoring
The TLV2542ID can digitize two process-related voltages for monitoring loops, status displays, or data logging. Its SAR architecture provides a practical conversion mechanism for sampled control signals, and the serial interface allows the analog front end to communicate efficiently with an MCU or DSP. Place anti-alias filtering and protection ahead of the inputs, keep the reference stable, and account for settling time after channel or signal changes. The verified material does not specify the full-scale input range, so sensor scaling and protection components cannot be finalized without the official electrical limits.
推荐
Embedded Data Logging
The TLV2542ID is a practical choice for embedded data logging when two analog measurements must be stored periodically alongside MCU or DSP state. The automatic power-down feature supports intermittent operation, and the serial interface avoids consuming a large parallel GPIO bank. Use timestamped conversion sequencing in firmware, calibrate the two channels against known references, and include anti-alias filters sized for the logging bandwidth. Because the supplied sources do not provide current consumption or exact temperature specifications beyond the family information, power budgeting and environmental qualification require the manufacturer datasheet.
推荐
推荐产品汇总
工程参考数据： TLV2542ID ——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 | TLV2542CDGKR |
|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC family comparison; exact suffix compatibility requires datasheet confirmation |
| Brand | Texas Instruments | Texas Instruments |
| Resolution | 12 bit | 12 bit |
| Input Channels | 2 channels | Dual-channel family position; verify exact configuration |
| Maximum Throughput | 140 kSPS or 200 kSPS | 200 kSPS family position; verify exact ordering option |
| Supply Voltage Range | 2.7 V to 5.5 V | Family data identifies 2.7 V to 5.5 V; verify exact suffix |
| Interface | SPI/DSP-compatible serial output | Family position is serial, TMS320-compatible; verify exact suffix |
| Interface Clock | Up to 10 MHz | Family data identifies up to 10 MHz; verify exact suffix |
关键差异点
- Dual-channel conversion in an 8-pin package （对比 TLV2542CDGKR)
- Serial interface reduces MCU pin count （对比 TLV2542CDGKR)
- Low-power operation for embedded systems （对比 TLV2542CDGKR)
设计说明
The TLV2542ID operates from a single 2.7 V to 5.5 V supply, so the analog and digital sections must share a carefully decoupled supply rail in most designs. Place the manufacturer-recommended bypass capacitors close to the supply pins, verify the required voltage range, and keep the reference and input return paths away from switching-node currents. Because the supplied data does not specify active current or reference limits, do not estimate power budget from generic ADC values; use the official datasheet.
Route the two analog inputs as short, quiet traces directly toward the converter, with analog ground and digital return currents kept separate where the system permits. Place input filtering and protection close to the source or connector, and avoid routing the serial clock and data lines parallel to sensitive analog traces. The serial interface reduces board width, but a proper ground reference and controlled return path remain necessary for repeatable 12-bit measurements.
Do not treat the distributor title as a complete electrical specification. In particular, confirm the TLV2542ID input range, reference voltage, sampling behavior, absolute maximum ratings, and temperature grade in the manufacturer datasheet before selecting resistor dividers or protection networks. Also verify the complete 8-pin SOIC pinout; the supplied verified data does not provide numbered pin assignments, so a guessed pin mapping could damage the design.
合规信息
The supplied verified web data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable based on the supplied general-purpose ADC information.
