TLV2544ID - 12-Bit 200 kSPS 4-Channel SAR ADC | Texas Instruments
料号： TLV2544ID ✓ 量产中TLV2544ID 概述
An ADC is an interface IC that converts continuously varying analog voltages into numerical values for processing by a microcontroller, DSP, or other digital controller. The TLV2544 belongs to the SAR ADC hierarchy, where an internal sample-and-hold circuit and successive comparison stages produce a digital result. This category is used when a system needs moderate resolution, predictable conversion speed, low power consumption, and a compact serial interface rather than a high-throughput parallel converter.
The TLV2544ID combines 12-bit resolution with a maximum conversion rate of 200 kSPS and four analog input channels. Automatic power-down can be controlled in software or hardware, helping reduce current consumption when conversions are not continuous. The family also supports an eight-word FIFO and a four-channel multiplexing arrangement, allowing a compact converter to sample multiple sources sequentially. A single 2.7 V to 5.5 V supply simplifies integration with both 3.3 V and 5 V systems.
The serial interface reduces the number of PCB traces and package pins required compared with a parallel ADC. Chip select permits sharing of the serial bus, while the three-state output can isolate devices on a common data line. Because the TLV2544 is a SAR ADC, sampling behavior, source impedance, acquisition time, reference stability, and digital-interface timing are central considerations in a complete measurement chain.
Typical uses include industrial sensor acquisition, portable measurement instruments, battery-powered monitoring systems, process-control nodes, and embedded data acquisition. The four inputs are useful for monitoring thermistors, potentiometers, analog sensors, and mixed bipolar or unipolar signals when the selected input range and front-end circuitry support those sources.
For reliable operation, keep analog and return paths short, bypass the supply close to the device, and confirm the source-impedance limits for the selected sampling rate. The digital interface should also use defined levels at all times because the three-state output must not contend with another driver.
This product record combines manufacturer specifications, distributor availability information, same-family alternatives, interface guidance, and application-oriented design notes to provide practical engineering context beyond the basic ordering table.
直接替换替代料： TLV2544ID ——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： TLV2544ID （相同外形与封装尺寸） ——差异在于 Conversion Time, Resolution, FIFO Depth, Input Type, Package.
TLV2544CD
✅ 直接替换联系询价
查看数据手册 →TLV2544IPD
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV2544QDRG4
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →TLV2544AID
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
TLV2544ID 最大额定值与电气特性
| ADC Resolution | 12 bit |
| Conversion Rate | 200 kSPS |
| Architecture | Successive-approximation register (SAR) |
| Analog Input Channels | 4 inputs |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Conversion Time | 3.86 us |
| FIFO Depth | 8 words |
| Digital Interface | Serial, 4-wire |
| Interface Signals | CS, SCLK, SDI, and SDO |
| Serial Output | 3-state |
| Power-Down Control | Software and hardware automatic power-down |
| Process Technology | CMOS |
| 封装 | 16-pin SOIC (D) |
| 安装类型 | Surface mount |
TLV2544ID 16-pin soic (d) 引脚配置指南
TLV2544ID（16-pin soic (d) 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： TLV2544ID.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV2544ID 适用于 6 应用s: Industrial Sensor Acquisition, Portable Measurement Instrument, Battery-Powered Monitoring System, Process-Control Data Logger, Embedded Analog Control Interface, Consumer Accessory and Display Control.
Industrial Sensor Acquisition
The TLV2544ID fits industrial sensor acquisition because it combines four analog inputs with 12-bit resolution, 200 kSPS conversion capability and a 2.7 V to 5.5 V supply range. It can multiplex temperature, pressure, position and level signals into a serial data stream for a controller or industrial communications module. The four-channel arrangement reduces connector and converter count, while the 3.86 microsecond conversion time supports timely sampling. Engineers should condition each sensor, limit source impedance and protect inputs according to the manufacturer datasheet.
推荐
Portable Measurement Instrument
The TLV2544ID supports portable measurement instruments that combine several low-bandwidth analog channels with modest resolution. Its 2.7 V minimum supply supports 3.3 V systems, while automatic power-down controlled by software or hardware can reduce consumption between measurement bursts. The 12-bit result provides 4,096 digital codes for display, logging and threshold decisions. Designers should characterize input settling, reference drift and offset error before claiming laboratory-grade accuracy.
推荐
Battery-Powered Monitoring System
The TLV2544ID is suitable for battery-powered environmental monitoring when the converter is operated intermittently rather than continuously. Software- or hardware-controlled automatic power-down supports duty-cycled measurements, and the 2.7 V to 5.5 V operating range covers common portable supply levels. Four inputs can share one converter for temperature, light or gas-sensor channels. Actual battery-life benefit depends on active current, wake-up latency and access frequency, which are not quantified in the supplied excerpts and must be taken from the official datasheet.
推荐
Process-Control Data Logger
The TLV2544ID can serve as the acquisition element in a process-control node that monitors several slowly changing analog variables. Four multiplexed inputs reduce the number of converters required, and the 200 kSPS capability provides substantial timing margin relative to typical temperature, pressure and flow signals. The serial interface simplifies wiring to a microcontroller or industrial bus controller. For reliable process measurements, use buffered inputs, a stable reference, adequate acquisition settling time and calibration suited to the required accuracy.
推荐
Embedded Analog Control Interface
The TLV2544ID provides a compact analog interface for embedded controllers that need more resolution than a simple internal comparator but do not require a high-speed parallel ADC. Its CS, SCLK, SDI and three-state SDO signals permit a compact serial connection and controlled bus sharing. The 12-bit, 200 kSPS part is appropriate for potentiometer, resistor-divider and moderate-bandwidth sensor inputs. Firmware must account for multiplexing order, acquisition settling and chip-select timing to prevent inaccurate or misaligned readings.
推荐
Consumer Accessory and Display Control
The TLV2544ID can digitize controls and simple sensor inputs in consumer accessories where board area and power are constrained. Four channels support items such as analog buttons, position controls, ambient sensing or battery monitoring, and the 2.7 V to 5.5 V range accommodates common embedded supply rails. The 12-bit resolution gives sufficient granularity for many control and display tasks. Firmware should average or filter samples when noise dominates, and the analog inputs must remain within the device's specified common-mode and full-scale limits.
推荐
推荐产品汇总
工程参考数据： TLV2544ID ——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 | TLV2544CD | TLV2544IPD | TLV2544QD | TLV2544AID | TLV1504ID |
|---|---|---|---|---|---|---|
| Package | 16-pin SOIC (D) | 16-pin SOIC (D) | 16-pin SOIC (D) | 16-pin SOIC (D) | 16-pin SOIC (D) | 16-pin SOIC (D) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Conversion Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Analog Input Channels | 4 inputs | 4 inputs | 4 inputs | 4 inputs | 4 inputs | 4 channels |
| Conversion Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
关键差异点
- Four inputs in one converter （对比 TLV1504ID)
- Defined single-supply operating range （对比 TLV2544AID)
- Established ordering-grade alternative （对比 TLV2544CD)
设计说明
Do not treat the TLV2544ID as a high-impedance meter without checking the datasheet's acquisition-time and maximum-source-impedance limits. A resistive divider, thermistor or sensor network can require more settling time than the nominal 3.86 microsecond conversion interval. Place the selected channel close to the converter, minimize trace capacitance and validate the complete source network at the intended sampling rate.
The SDO output is three-state, so firmware and board design must ensure that no other device drives the shared serial-data line while the TLV2544ID is active. Use a defined level on SDI, observe chip-select setup and hold timing around SCLK edges, and keep the serial clock away from sensitive analog input traces. Breadboard wiring is generally unsuitable for validating nanovolt-to-millivolt-scale signal integrity because contact resistance and leakage can dominate the error budget.
Place the supply bypass capacitor close to the device's supply and ground pins, and route analog inputs away from SCLK and other fast digital edges. Keep the reference and analog return paths compact because parasitic resistance and shared copper impedance can create channel-dependent offsets. When the converter shares a board with switching regulators or communications circuitry, verify the input filtering experimentally with the converter enabled and disabled across the intended operating range.
合规信息
The supplied verified excerpts do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals or AEC-Q100 status. The TLV2544ID ordering grade should not be treated as automotive-qualified without an explicit AEC-Q100 statement in the manufacturer documentation.