TLV2544CD - 12-Bit 200kSPS 4-Channel Serial ADC | Texas Instruments
MPN： TLV2544CD ✓ 啟用中TLV2544CD 概覽
An ADC is a data-acquisition IC that converts an analog voltage into a digital code for measurement, monitoring, or control. The TLV2544 belongs to the SAR ADC and serial-interface ADC hierarchy within analog-to-digital converters and data-converter ICs. Its 12-bit resolution provides 4096 discrete quantization levels, while four analog input channels let one converter service multiple sensors without requiring a separate ADC for each signal.
The TLV2544CD supports input rates up to 200 kSPS and a stated conversion time of 3.86 microseconds. Its serial interface uses chip select, serial clock, serial data input, and serial data output signals, allowing the converter to communicate efficiently with microcontrollers and embedded processors. The integrated 8-entry FIFO helps buffer multiple conversions and reduces the frequency at which the host processor must retrieve results.
Automatic power-down can be initiated through software or hardware, helping reduce power consumption in intermittent measurement systems. The 2.7 V to 5.5 V operating range supports both 3.3 V and 5 V system rails, although the selected external supply and reference implementation must remain within the device limits. Because the converter uses a serial output, board layout and signal-integrity practices remain important when clock rates increase.
Typical uses include industrial process monitoring, portable data loggers, battery-powered sensor interfaces, consumer equipment, and embedded control systems. The four-channel architecture is especially useful when several slowly changing analog signals must be sampled through a shared host interface. The FIFO is useful when the processor occasionally needs time to perform other tasks between conversion bursts.
Designers should verify the complete pin arrangement and electrical limits in the manufacturer datasheet before layout. Input-source impedance, reference stability, sampling behavior, digital-interface timing, and decoupling directly affect conversion accuracy. Place bypass capacitance close to the supply pins and keep analog and digital return paths controlled to minimize conversion and clock-related errors.
This product page consolidates verified manufacturer and distributor information, package details, procurement data, and same-family drop-in candidates. It also distinguishes verified electrical facts from parameters that still require datasheet confirmation, helping engineers compare the TLV2544CD without relying on incomplete distributor summaries.
直接替換替代品，適用於 TLV2544CD — 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： TLV2544CD （相同外形與佔位） — 差異在於 Conversion Time, FIFO Depth, Package, Resolution, Supply Voltage Range.
TLV2544QDRG4
✅ 直接替換聯絡詢價
查看資料表 →TLV2544QDRG4
✅ 直接替換聯絡詢價
查看資料表 →TLV2544ID
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLV2544IPWR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV2544QDG4
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV2544CD 最大額定值與電氣特性
| 解析度 | 12 bit |
| Maximum Sampling Rate | 200 kSPS |
| Analog Input Channels | 4 channels |
| Conversion Architecture | Successive-approximation register (SAR) |
| Conversion Time | 3.86 us |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Number of ADCs | 1 ADC |
| Output Interface | Serial |
| FIFO Depth | 8 samples |
| Automatic Power-Down | Software and hardware control |
| Digital Interface Signals | CS, SCLK, SDI, and SDO |
| 封裝 | 16-pin SOIC (D) |
| 安裝類型 | Surface mount |
TLV2544CD 16-pin soic (d) 腳位配置指南
TLV2544CD（16-pin soic (d) 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： TLV2544CD.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLV2544CD 適用於 6 應用s: Industrial Process Monitoring, Battery-Powered Sensor Interface, Portable Data Logger, Embedded Control System, Consumer Measurement Equipment, Condition Monitoring.
Industrial Process Monitoring
The TLV2544CD fits industrial process monitoring because it combines four analog input channels, 12-bit resolution, and a maximum sampling rate of 200 kSPS in a 16-pin SOIC package. It can sample multiple pressure, temperature, or position transducer outputs through one serial interface, reducing the number of converters required in a multi-channel acquisition circuit. The 8-sample FIFO provides temporary result buffering, while automatic power-down can reduce activity between measurement updates. Designers should use shielded analog routing, stable references, and supply bypassing because industrial sensor cables can introduce noise and ground-potential differences.
Battery-Powered Sensor Interface
The TLV2544CD is appropriate for battery-powered sensor interfaces because it supports a 2.7 V to 5.5 V operating range and provides software- or hardware-controlled automatic power-down. Its four channels can consolidate several analog sensor inputs, while the 8-sample FIFO allows the host processor to retrieve a group of results without servicing every conversion immediately. For a duty-cycled logger, the converter can remain inactive between measurement bursts, reducing energy use. The final battery-life calculation should use the measured or datasheet-specified active and shutdown currents for the chosen configuration.
Portable Data Logger
The TLV2544CD supports portable data-logging designs that require several analog channels without allocating one ADC package per sensor. Its 12-bit resolution produces 4096 digital levels, the serial interface reduces the number of signal connections to the host processor, and the FIFO depth of eight samples helps organize sequential acquisitions. Automatic power-down is useful during movement or configuration periods when measurements are intermittent. For accurate logging, the source impedance must be compatible with the internal sampling network, and the reference and supply rails must remain stable across temperature and battery-voltage changes.
Embedded Control System
The TLV2544CD can serve as the acquisition front end in an embedded control system where analog feedback must be converted before processing by a microcontroller. The 3.86 us conversion time and 200 kSPS maximum rate are suitable for many monitoring and supervisory-control loops, while four channels provide concurrent access to multiple sensed variables. Its serial CS, SCLK, SDI, and SDO interface enables structured communication with embedded processors. Timing between chip select, clock edges, data validity, and FIFO reads must follow the manufacturer timing diagrams to prevent incorrect conversion results.
Consumer Measurement Equipment
The TLV2544CD is applicable to compact consumer measurement equipment where a low-power 12-bit ADC is needed for analog controls or sensing. Its 2.7 V to 5.5 V supply range supports common embedded-system rails, and the 16-pin SOIC package can simplify assembly relative to larger high-resolution converter packages. Four channels permit sharing among control inputs, while automatic power-down helps when the product spends substantial time idle. Layout should keep the serial clock and data traces short, separate sensitive analog routing from digital switching paths, and follow the manufacturer grounding recommendations.
Condition Monitoring
The TLV2544CD is useful for condition-monitoring equipment that samples several transducer channels and stores or evaluates the resulting measurements. Four analog inputs can represent vibration, temperature, pressure, or current-related signals without requiring four independent converter packages, and the 8-sample FIFO assists with burst acquisition. The 200 kSPS ceiling provides useful throughput for monitoring transient events, although the actual bandwidth must be assessed against signal and anti-aliasing requirements. Grounding and shielding are especially important when sensors are physically separated from the converter and connected through long cables.
工程參考資料，適用於 TLV2544CD — 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 | TLV2544QD | TLV2544QDRG4 | TLV2544ID | TLV2544IPWR | TLV2544QDG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| 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) |
主要差異化特點
- Four-channel integration in a 16-pin serial ADC (對比TLV2544QD)
- Automotive-qualified same-family option available (對比TLV2544CD)
- Integrated FIFO and dual-mode automatic power-down (對比TLV2544QD)
設計說明
Place the required supply-bypass capacitors close to the ADC supply pins and connect them to a low-impedance ground reference. Route the four analog inputs away from the SCLK, SDI, and SDO traces, particularly when clocks are active. The verified manufacturer information identifies a serial interface and automatic power-down, but does not provide a complete layout example; the official manufacturer datasheet should therefore control capacitor values, trace geometry, and grounding arrangements.
Treat SCLK as a timing-sensitive signal and use a short, continuous route from the host controller to the ADC. Establish the valid-data interval from the manufacturer timing diagrams rather than from assumed clock polarity. Because the TLV2544CD can operate at 200 kSPS and uses four analog inputs, return-path discontinuities and simultaneous switching noise can affect conversion accuracy. Use a continuous ground reference and consider series damping on SCLK if edge ringing appears on the assembled board.
Do not treat FIFO depth as extra conversion time. The TLV2544CD provides an 8-sample FIFO, but the host must still service the interface before data is overwritten. Also avoid selecting a replacement from package appearance alone: verify the complete numbered pinout, operating-temperature range, reference limits, input range, and acquisition timing against the Texas Instruments manufacturer datasheet. The verified excerpts do not provide every electrical limit needed to approve a substitution.
合規資訊
The verified excerpts do not state the target part's RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to the standard TLV2544CD ordering option; automotive-grade variants are separately identified.