TLV1544ID - 10-Bit 85 kSPS 4-Channel SAR ADC | Texas Instruments
料号： TLV1544ID ✓ 量产中TLV1544ID 概述
An ADC is an analog-to-digital converter, a semiconductor that transforms continuously varying analog voltages into numeric values for processing, storage, or control. The TLV1544 belongs to the SAR ADC category, where an internal comparator and successive approximation process each conversion. It is a four-channel ADC with serial control, providing an economical way to digitize several low-bandwidth sensor or control signals without using four separate converters. In system terms, the TLV1544 is an interface IC and data-conversion device that connects analog measurement circuitry to a digital controller.
The TLV1544 family provides a 10-bit resolution and an 85 kSPS conversion-rate capability. Its four analog inputs allow ratiometric measurement, scaling, and isolation of analog circuitry from logic and supply noise when used with the differential high-impedance reference inputs described by the manufacturer. Serial control through chip select, input/output clock, data input, and data output supports direct connection to compatible serial processors and DSPs. Programmable power, power-down, and conversion-rate controls help align converter operation with system energy requirements.
The TLV1544ID uses the 16-pin SOIC package identified by the verified distributor listing. Its serial interface and four-channel architecture make it useful for embedded acquisition systems, industrial monitoring, and low-power instrumentation. The 10-bit resolution provides 1,024 possible code values, while the 85 kSPS rate supports rapidly changing analog signals when the acquisition system provides adequate settling time, input filtering, and reference stability.
Typical applications include industrial sensor interfaces, portable measurement instruments, battery-powered monitoring equipment, process-control nodes, and DSP or microcontroller data-acquisition boards. Because the converter uses a serial interface, the PCB layout can remain compact when the digital controller supports compatible SPI-like signaling. Analog signal routing should remain short and separated from clock and data paths to minimize conversion error.
Designers should verify the complete electrical limits, reference configuration, input range, sampling timing, and pin functions in the manufacturer datasheet before layout. The verified product pages identify the TLV1544 as a low-voltage, 10-bit, 85 kSPS SAR ADC with four channels, but the supplied search data does not provide the complete timing, voltage, accuracy, power, and pin-function tables. The 16-pin SOIC footprint should therefore be confirmed against the current TI datasheet and application-specific reference design.
This page combines the verified distributor and manufacturer descriptions for the TLV1544ID with practical interface, application, comparison, and sourcing guidance. It highlights where the part is suitable, how its four-channel SAR architecture is used, and which specifications should be checked in the official datasheet before a production design is released.
直接替换替代料： TLV1544ID ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
TLV1544IDRG4
✅ 直接替换📋 参考替代料（不在目录中）
TLV1544CDG4
✅ 直接替换📋 参考替代料（不在目录中）
TLV1544ID 最大额定值与电气特性
| Converter Type | Successive-approximation ADC |
| 分辨率 | 10 bit |
| Maximum Conversion Rate | 85 kSPS |
| Number of Analog Input Channels | 4 channels |
| Output Interface | Serial, 4-wire synchronous |
| Processor Compatibility | TMS320 DSP, SPI, and QPSI compatible |
| Control Signals | CS, I/O CLK, DATA IN, and DATA OUT |
| Power Control | Programmable power and power-down |
| Conversion-Rate Control | Programmable |
| Reference Inputs | Differential high-impedance reference inputs |
| Input Type | Analog-to-digital converter input |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Temperature Grade | Industrial grade |
TLV1544ID 16-pin soic 引脚配置指南
TLV1544ID（16-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： TLV1544ID.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV1544ID 适用于 6 应用s: Industrial Sensor Acquisition, Battery-Powered Monitoring, Process Control Node, Portable Measurement Instrument, DSP Interface Data Acquisition, Digital Control and Monitoring System.
Industrial Sensor Acquisition
The TLV1544ID fits four-channel industrial sensor acquisition because it combines 10-bit resolution, a 4-channel input configuration, and a maximum 85 kSPS conversion rate in a 16-pin SOIC package. It can digitize pressure, temperature, position, or level signals when each source remains within the configured input and reference range. The four-wire serial interface reduces parallel routing and supports TMS320 DSP, SPI, and QPSI-compatible controllers. Its differential high-impedance reference inputs also support ratiometric scaling and help isolate analog circuitry from logic and supply noise. Designers should preserve the required settling time, place input filtering close to the converter, and verify the exact electrical limits in the manufacturer datasheet.
推荐
Battery-Powered Monitoring
The TLV1544ID is appropriate for battery-powered monitoring systems that periodically sample several low-speed analog channels. Its 10-bit conversion resolution provides 1,024 code levels, while programmable power and power-down functions give the host controller a way to reduce activity between measurements. The 85 kSPS maximum rate is more than sufficient for many temperature, battery-voltage, and environmental sensors, and the 16-pin SOIC package simplifies compact board construction. Serial control avoids a wide parallel data bus. The main design trade-off is that a switched-capacitor SAR ADC still requires stable reference and supply behavior during each acquisition, so the system should disable unused channels and use the manufacturer-prescribed acquisition sequence.
推荐
Process Control Node
The TLV1544ID can serve as the measurement front end in a compact process-control node that must observe several analog process variables. Four channels allow a single converter to handle feedback, limits, or auxiliary measurements, and its 85 kSPS rate supports responsive sampling without the pin count of four parallel-output ADCs. The serial interface is compatible with TMS320 DSP, SPI, and QPSI devices, making it suitable for embedded controllers and digital signal processors. Differential high-impedance reference inputs support ratiometric conversion, which can compensate for excitation drift in resistance-based sensors. For reliable control-loop performance, analog filtering, reference routing, and grounding must be designed around the verified acquisition timing and common-reference requirements in the datasheet.
推荐
Portable Measurement Instrument
The TLV1544ID supports portable measurement instruments that combine several low-bandwidth analog inputs with an embedded digital controller. Its 4-channel input arrangement limits the number of separate converters needed, while the 16-pin SOIC package supports compact assembly. The 10-bit result width is suitable for many diagnostic, calibration, and status measurements where a higher-resolution converter would add unnecessary cost or power. Serial data output also keeps the PCB routing manageable in handheld and bench-instrument formats. Designers should use controlled reference and supply arrangements to preserve repeatability, avoid placing the serial clock adjacent to sensitive analog inputs, and confirm that the selected controller supports the TLV1544ID's CS and I/O CLK signaling convention.
推荐
DSP Interface Data Acquisition
The TLV1544ID is designed for direct serial integration with compatible digital signal processors because the verified TI description specifically identifies TMS320 DSP, SPI, and QPSI compatibility. Its CS, I/O CLK, DATA IN, and DATA OUT signals provide a compact four-wire synchronous interface, and four analog channels can feed a DSP-based acquisition pipeline. The 85 kSPS rate supports moderately fast control or analysis tasks, while the 10-bit resolution provides a practical balance between signal detail and converter simplicity. DSP firmware must implement the correct clocking, data latency, and conversion sequence from the datasheet. PCB layout should keep the clock path continuous and reference the analog return path carefully to prevent digital activity from degrading measured results.
推荐
Digital Control and Monitoring System
The TLV1544ID can serve as a compact analog-input subsystem for digital control boards that monitor multiple analog conditions and report them through a serial bus. Four inputs at up to 85 kSPS provide flexibility for feedback measurements, diagnostics, and configuration sensing, while programmable conversion-rate and power functions help the controller coordinate acquisition. Its 10-bit output avoids the interface burden of a much wider converter and is suitable for supervisory measurements rather than precision laboratory analysis. In a control system, the ADC reference, analog ground, and digital ground strategy should be planned before layout, and unused analog inputs should be handled according to the manufacturer recommendations. Firmware should wait for valid conversion results using the documented serial timing rather than assuming a fixed pipeline delay.
推荐
推荐产品汇总
工程参考数据： TLV1544ID ——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 | TLV1544IDRG4 | TLV1544CDG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC |
| Resolution | 10 bit | 10 bit | 10 bit |
| Conversion Architecture | Successive-approximation ADC | Successive-approximation ADC | Successive-approximation ADC |
| Maximum Conversion Rate | 85 kSPS | 85 kSPS | 85 kSPS |
| Number of Analog Inputs | 4 channels | 4 channels | 4 channels |
| Serial Interface | 4-wire synchronous serial interface | 4-wire synchronous serial interface | 4-wire synchronous serial interface |
| Processor Compatibility | TMS320 DSP, SPI, and QPSI compatible | TMS320 DSP, SPI, and QPSI compatible | TMS320 DSP, SPI, and QPSI compatible |
| Power and Conversion-Rate Control | Programmable power, power-down, and conversion rate | Programmable power, power-down, and conversion rate | Programmable power, power-down, and conversion rate |
关键差异点
- Four-channel conversion in one serial ADC （对比 TLV1544IDRG4)
- Direct compatibility with common serial processors （对比 TLV1544CDG4)
- Programmable system-control features （对比 TLV1544IDRG4)
设计说明
Route the four analog inputs away from the I/O CLK, DATA OUT, and DATA IN nets, especially when the source impedance is high. Place the recommended input and reference bypass capacitors close to their associated device pins, use a continuous reference route, and provide a low-impedance return path for analog current. The verified data confirms differential high-impedance reference inputs but does not provide capacitor values, so use the values and layout shown in the current TI datasheet and reference design.
Treat I/O CLK as the primary timing signal and keep it short, continuous, and away from analog inputs. The TLV1544ID uses a synchronous four-wire interface with CS, I/O CLK, DATA IN, and DATA OUT, so controller firmware must honor the documented clock edge, data setup and hold requirements, and conversion latency. A small series resistor can be considered on the clock when signal-integrity analysis shows edge ringing, but its value should be validated against the output drive and clock rate.
Programmable power and power-down functions can reduce activity in intermittent systems, but each acquisition sequence still requires a valid supply and reference. Confirm whether the selected channel configuration permits shared reference use, how unused channels should be connected, and whether a conversion needs to be discarded after power-up. Do not change the reference voltage between channels unless the datasheet explicitly supports that mode, because unsupported reference switching can produce incorrect codes and excess settling time.
Do not treat the 10-bit resolution as 10 accurate bits; total unadjusted error depends on offset, gain, nonlinearity, reference accuracy, source impedance, and noise. The supplied verified data does not include accuracy limits, input ranges, acquisition time, or output-code behavior. Before release, compare the required signal bandwidth and accuracy against the complete TI datasheet, and do not infer those values from the 85 kSPS headline conversion rate.
合规信息
The supplied verified search results identify the part as industrial-grade and provide manufacturer and distributor links, but they do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been inferred.
