TLV571IPW - 8-Bit 1.25 MSPS SAR ADC | Texas Instruments
料号： TLV571IPW ✗ 停产TLV571IPW 概述
An ADC is a data-conversion semiconductor that transforms a continuously varying analog voltage into a numeric value for processing, measurement, or control. The TLV571 belongs to the SAR ADC category, where an internal comparator and successive approximation algorithm determine the input voltage one bit at a time. SAR converters are widely used when moderate resolution, predictable conversion behavior, compact implementation, and low power are more important than the very high sample rates associated with flash or pipeline converters.
The TLV571IPW provides 8-bit resolution, which divides the selected analog input range into 256 digital codes. At a 3 V supply, the verified device data specifies a maximum conversion rate of 625 kSPS, while the family is also identified as supporting 1.25 MSPS operation. Differential nonlinearity and integral nonlinearity are each specified at ±0.5 LSB, providing concrete measures of transfer-error performance. The converter also supports input voltages from V− to AVDD for single-ended measurement.
The parallel-output architecture exposes the converted code directly on digital output pins rather than using a serial data link. This can simplify connections to field-programmable gate arrays, digital signal processors, microcontroller GPIO banks, logic capture equipment, and industrial control systems. Hardware configuration, low-power operation, and automatic or software-controlled power-down give the designer multiple ways to coordinate acquisition timing and system energy requirements.
Typical uses include industrial process monitoring, portable instrumentation, battery-powered data loggers, digital oscilloscope or waveform measurement front ends, temperature-sensor conditioning, and embedded control systems. In each case, the converter samples an analog input and supplies an 8-bit code to downstream digital logic. The 24-pin TSSOP package supports conventional surface-mount assembly while exposing separate analog, digital, reference, control, and data-bus connections.
Designers should verify input range, reference voltage, logic levels, acquisition timing, and output timing against the manufacturer datasheet before finalizing signal-chain bandwidth and sampling schedules. The available verified results establish the 1.25 MSPS class, ±0.5 LSB nonlinearity figures, 2.7 V to 5.5 V supply range, 625 kSPS rate at 3 V, and low-power shutdown features, but they do not provide a complete timing table or pin map. Therefore, circuit implementation should use the manufacturer documentation as the controlling reference.
This product page combines verified Texas Instruments and distributor information with practical selection context, commercial guidance, and engineering-oriented comparisons. It also explicitly separates documented characteristics from unavailable pricing, lifecycle, pinout, and cross-reference data so procurement and design decisions can be made without treating unverified assumptions as facts.
直接替换替代料： TLV571IPW ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料TLV571IPW 最大额定值与电气特性
| ADC Type | Successive Approximation Register (SAR) |
| 分辨率 | 8 bit |
| Number of Channels | 1 channel |
| Maximum Sampling Rate | 1.25 MSPS |
| Sampling Rate at 3 V | 625 kSPS |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Analog Input Range | V− to AVDD |
| Input Configuration | Single-ended or differential |
| Output Interface | Parallel |
| Differential Nonlinearity | ±0.5 LSB |
| Integral Nonlinearity | ±0.5 LSB |
| Configuration | Hardware configurable |
| Power-Down Control | Automatic or software controlled |
| Low-Power Operation | Low-power mode |
| 封装 | 24-pin TSSOP (PW) |
| 安装类型 | Surface mount |
| RoHS 状态 | Compliant |
TLV571IPW 24-pin tssop (pw) 引脚配置指南
TLV571IPW（24-pin tssop (pw) 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： TLV571IPW.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TLV571IPW 适用于 6 应用s: Industrial Process Monitoring, Battery-Powered Data Logger, Portable Instrumentation, Temperature and Sensor Conditioning, Digital Oscilloscope Front End, Automated Test and Measurement.
Industrial Process Monitoring
The TLV571IPW fits industrial process monitoring when the required resolution is 8 bits and the measured signal can be represented within its 2.7 V to 5.5 V supply range. Its single-channel SAR architecture supports repeated sampling while the parallel output can feed a microcontroller, FPGA, or logic interface. The documented 1.25 MSPS class rate also permits relatively rapid acquisition, although the 625 kSPS specification at 3 V should be considered for lower-voltage systems. Noise, settling time, input impedance, and common-mode limits must be confirmed from the manufacturer datasheet before selecting amplifier and protection components.
推荐
Battery-Powered Data Logger
Automatic and software power-down make the TLV571IPW useful in battery-powered data loggers that sample sensors intermittently rather than continuously. Its low-power design, 8-bit SAR conversion, and 625 kSPS operation at 3 V align with embedded measurement systems operating from a 3 V supply. The parallel data bus may require several GPIO pins on a low-cost MCU, so pin budgeting and wake-up timing should be reviewed. Because the supplied data does not state shutdown current or wake-up latency, battery-life calculations must use values from the manufacturer datasheet.
推荐
Portable Instrumentation
The TLV571IPW can serve as the conversion stage in portable instrumentation that accepts a bounded analog input and produces an 8-bit measurement code. Its 2.7 V to 5.5 V operating range supports both 3 V and 5 V portable-system architectures, while the parallel interface offers direct access to digital processing logic. The converter should be paired with an input amplifier, protection network, and reference whose accuracy is appropriate for the required measurement resolution. Calibration strategy, analog bandwidth, and conductor-noise sensitivity remain important because the verified excerpts do not provide complete noise or acquisition-timing data.
推荐
Temperature and Sensor Conditioning
The 8-bit TLV571IPW is appropriate for basic temperature, level, or resistive-sensor measurements where 256 digital levels provide sufficient resolution. Conditioning circuitry can scale the sensor output into the ADC input range, after which the parallel interface transfers each conversion to embedded logic. Differential operation may help reduce common-mode noise in properly balanced sensor networks. Engineers should verify the allowable input range relative to V− and AVDD, check the source impedance requirements, and include filtering appropriate to the sensor bandwidth rather than assuming the nominal MSPS rate alone determines usable accuracy.
推荐
Digital Oscilloscope Front End
A TLV571IPW can be evaluated in a low-cost digital oscilloscope or waveform-capture front end when 8-bit resolution is sufficient for the target measurement. The 1.25 MSPS class sampling rate provides a defined upper bound on how quickly changing signals can be captured, while the parallel output can feed an FPGA or high-speed GPIO controller. Practical implementations require sufficient analog bandwidth before the ADC, a stable reference, acquisition-memory management, and careful synchronization of the sample clock. The supplied data does not establish input bandwidth, acquisition latency, or output timing, so those parameters require datasheet confirmation.
推荐
Automated Test and Measurement
The TLV571IPW can be incorporated into automated test equipment for low-to-moderate resolution measurements, control feedback, and production-line stimulus monitoring. Its single-channel SAR conversion, hardware configuration, and automatic or software power-down provide flexible acquisition control. The parallel output simplifies direct transfer into digital test logic, while 2.7 V to 5.5 V operation supports common embedded rails. For dependable test results, designers must characterize offset, gain, linearity, reference stability, and settling behavior in the complete analog path. Those calibration parameters are not included in the supplied verified excerpts and should not be inferred from the 8-bit resolution alone.
推荐
推荐产品汇总
工程参考数据： TLV571IPW ——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 |
|---|---|
| Package | 24-pin TSSOP (PW) |
| Brand | Texas Instruments |
| ADC Architecture | Successive Approximation Register (SAR) |
| Resolution | 8 bit |
| Number of Channels | 1 channel |
| Maximum Sampling Rate | 1.25 MSPS |
| Sampling Rate at 3 V | 625 kSPS |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Output Interface | Parallel |
| Differential Nonlinearity | ±0.5 LSB |
| Integral Nonlinearity | ±0.5 LSB |
| Power-Down Control | Automatic or software controlled |
关键差异点
- Single-channel SAR conversion at 1.25 MSPS （对比 No verified drop-in alternative was found)
- Low-power acquisition control （对比 No verified drop-in alternative was found)
- Parallel interface with broad supply support （对比 No verified drop-in alternative was found)
- Specified conversion error （对比 No verified drop-in alternative was found)
设计说明
Route the parallel data bus away from sensitive analog-input and reference traces, and keep the converter close to the digital device that captures each code. The supplied results confirm a 24-pin TSSOP package but do not provide the complete pin map, so pin assignment, return paths, and decoupling locations must be based on the manufacturer datasheet and reference layout rather than assumptions.
Treat the source impedance of the analog input as part of the converter interface. The available data confirms single-ended and differential operation and an input range from V− to AVDD, but it does not state acquisition time or source-impedance limits. Use the datasheet timing curves and recommended driver network, and avoid adding long resistive traces that could degrade settling before the next conversion.
Design the 2.7 V to 5.5 V analog and digital supply rails with local bypass capacitors placed according to the manufacturer layout guidance. Verify reference-voltage stability, supply sequencing, and digital logic levels against the complete datasheet. At 3 V the documented conversion rate is 625 kSPS rather than the family maximum of 1.25 MSPS, so timing and sampling plans must reflect supply-dependent performance.
Do not assume that an ADC with the same resolution and package is a drop-in replacement. A valid substitute must match pinout, input range, reference arrangement, acquisition timing, output coding, control logic, and power behavior. The supplied cross-reference search produced no verified alternative for TLV571IPW, so use the TI cross-reference search or obtain an explicit manufacturer compatibility statement before changing the BOM.
合规信息
The verified DiGi Electronics result explicitly identifies TLV571IPW as RoHS compliant. No verified statements were supplied for REACH, AEC-Q100, lead-free status, halogen-free status, or conflict-minerals compliance.
