TLV0831CD - 8-Bit 49 kSPS Differential ADC | Texas Instruments
MPN： TLV0831CD ✓ 啟用中TLV0831CD 概覽
An ADC is a data-conversion IC that samples an analog voltage and produces a corresponding digital code. The TLV0831 belongs to the SAR ADC hierarchy, where an internal sample-and-hold circuit and successive-comparison process convert the selected input into an 8-bit result. Its differential input can support common-noise rejection when both input nodes are driven appropriately, while the configurable single-ended mode supports simpler sensor and resistor-divider circuits.
The TLV0831 provides one analog input, 8-bit resolution, and a 49 kSPS conversion rate. According to the Texas Instruments product page, the device has a 3.6 V VCC description in its family positioning, ratiometric operation, VCC-reference operation, and compatibility with microprocessor interfaces. The verified distributor listing identifies the TLV0831CD specifically as an 8-bit, one-input SAR ADC in an 8-SOIC package.
The serial interface can be used with standard shift registers or microprocessors, allowing the converter to share a compact bus-oriented connection rather than requiring a wide parallel data interface. The single-channel architecture is appropriate when the system needs one analog measurement point, while the configurable input arrangement allows the same converter to serve single-ended or differential signal chains.
Typical uses include low-cost industrial sensing, battery-powered monitoring, simple control-loop measurement, potentiometer and resistor-divider acquisition, and embedded systems where an 8-bit measurement is sufficient. Designers should verify the exact reference voltage, input range, timing, and electrical limits from the manufacturer datasheet before finalizing signal conditioning and firmware.
The principal design consideration is ensuring that the analog source impedance, reference arrangement, serial clocking, and digital return paths support an accurate conversion. Keep analog traces short, provide suitable local bypassing, and account for acquisition time in the sampling cycle. This page consolidates verified product-page, distributor, and datasheet-search information while clearly separating values that were not supplied.
直接替換替代品，適用於 TLV0831CD — 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： TLV0831CD （相同外形與佔位） — 差異在於 Analog Input Type, Converter Architecture.
TLV0831ID
✅ 直接替換聯絡詢價
查看資料表 →TLV0831CDRG4
✅ 直接替換📋 參考替代品（不在目錄中）
TLV0831IDR
✅ 直接替換📋 參考替代品（不在目錄中）
TLV0831CDR
✅ 直接替換📋 參考替代品（不在目錄中）
TLV0831IDG4
✅ 直接替換📋 參考替代品（不在目錄中）
TLV0831CD 最大額定值與電氣特性
| ADC Resolution | 8 bit |
| Conversion Rate | 49 kSPS |
| Input Channels | 1 channel |
| Input Architecture | Differential input, configurable as single-ended input |
| Converter Architecture | Successive-approximation register (SAR) |
| Output Interface | Serial output |
| Supply Description | 3.6 V VCC |
| Reference Mode | Ratiometric operation or VCC reference |
| 封裝 | 8-pin SOIC (D) |
| 工作溫度 | -40°C to 85°C |
| Input Range | 0 V to VCC |
| Interface Compatibility | Standard shift registers or microprocessors |
| Sampling Mode | Single-ended or differential input options |
| Data Output Resolution | 8 bit |
| Analog Input Type | Analog voltage |
| 安裝類型 | Surface mount |
TLV0831CD 8-pin soic (d) 腳位配置指南
TLV0831CD（8-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： TLV0831CD.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLV0831CD 適用於 7 應用s: Potentiometer Position Measurement, Battery-Powered Sensor Monitoring, Embedded Control-Loop Measurement, Resistive Divider Acquisition, Low-Cost Data Logging Front End, Single-Ended Industrial Measurement, Portable Instrument Signal Capture.
Potentiometer Position Measurement
The TLV0831CD fits low-cost position sensing when a potentiometer or resistive divider produces a single analog voltage that only requires 8-bit resolution. Its 49 kSPS conversion rate is more than adequate for many position loops, while the serial output avoids a wide parallel bus. Configure the signal so it remains within the documented input range, account for the input source impedance, and use the device's ratiometric or VCC-reference mode according to the reference arrangement. The key trade-off is resolution: 256 codes are sufficient for coarse indication but may limit fine mechanical positioning.
推薦
Battery-Powered Sensor Monitoring
The TLV0831CD is suitable for slow or moderate battery-powered monitoring tasks where a single sensor output must be digitized without a parallel ADC interface. Its 1-channel, 8-bit SAR format and 49 kSPS rate provide a compact measurement path for resistive, capacitive, or buffered sensor signals. Because the verified data does not state quiescent current or shutdown behavior, battery-life calculations must use the manufacturer datasheet. Firmware should sample at the required update interval rather than continuously converting, reducing unnecessary activity in a portable design.
推薦
Embedded Control-Loop Measurement
Use the TLV0831CD when an embedded controller needs a periodic analog measurement for a basic feedback loop, threshold decision, or actuator command. Its 49 kSPS conversion capability is higher than many slow control-loop update rates, and the serial interface is practical for microprocessors and shift registers. The converter's 8-bit output gives approximately 256 code steps over its usable input range, so design the analog conditioning to map the control variable into that range. Verify conversion and serial timing in the manufacturer's documentation rather than assuming the nominal rate determines loop latency.
推薦
Resistive Divider Acquisition
The TLV0831CD can digitize a resistor-divider network used to monitor a higher voltage, battery level, or scaled sensor output. The single-ended configuration simplifies this type of application, while the verified manufacturer description confirms support for single-ended operation. The design must prevent divider loading, limit the node to the converter's documented input range, and account for reference accuracy because ratiometric operation can cancel some supply variations. A buffered divider may improve accuracy when its source impedance is too high for reliable sampling.
推薦
Low-Cost Data Logging Front End
The TLV0831CD can serve as the analog measurement channel in a compact data-logging system that periodically records one sensor value. The 49 kSPS rate supports rapid sequential samples, while the serial output is appropriate for a microcontroller or shift-register buffer. For battery logging applications, schedule conversions and transmission around the measurement task; the supplied data does not quantify standby current or conversion energy. Place the ADC and its decoupling near the sensor-conditioning circuitry, and protect the input from transients before committing the layout to production.
推薦
Single-Ended Industrial Measurement
The TLV0831CD is appropriate for compact industrial products that monitor one conditioned analog signal and need a simple serial ADC. Its configurable input architecture allows a single-ended sensor output to be measured directly, and the SOIC-8 package supports conventional surface-mount assembly. Industrial products should still verify supply tolerance, temperature, noise, and input protection against the complete manufacturer ratings. Differential operation is preferable when common-mode interference is significant and both input nodes can be driven with controlled, appropriately scaled signals.
推薦
Portable Instrument Signal Capture
The TLV0831CD can capture low-bandwidth analog signals in a portable instrument when 8-bit resolution is adequate and the design prioritizes low component count. The 49 kSPS SAR converter and serial output fit a compact signal path, while the single-ended option simplifies probes and sensor interfaces. Use the device's reference arrangement to improve interpretation of changing supply voltage, and ensure the source impedance meets the acquisition requirements established by the manufacturer datasheet. This is a functional-use example, not a claim that the converter replaces higher-resolution precision ADCs.
推薦
推薦產品摘要
工程參考資料，適用於 TLV0831CD — 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 | TLV0831ID | TLV0831CDRG4 | TLV0831CDR | TLV0831IDG4 | TLV0831IDR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC (D) | 8-pin SOIC (D), according to related-family context | 8-pin SOIC (D), according to related-family context | 8-pin SOIC (D), according to related-family context | 8-pin SOIC (D), according to related-family context | 8-pin SOIC (D), according to related-family context |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Conversion Rate | 49 kSPS | 49 kSPS | 49 kSPS | 49 kSPS | 49 kSPS | 49 kSPS |
| Input Channels | 1 channel | 1 channel | 1 channel | 1 channel | 1 channel | 1 channel |
| Input Type | Differential, configurable as single-ended | Differential, configurable as single-ended | Differential, configurable as single-ended | Differential, configurable as single-ended | Differential, configurable as single-ended | Differential, configurable as single-ended |
| Output Interface | Serial | Serial | Serial | Serial | Serial | Serial |
主要差異化特點
- Single-channel differential ADC with configurable single-ended input (對比TLV0831ID)
- Serial interface preserves PCB pin-count and bus simplicity (對比TLV0831CDRG4)
- 49 kSPS sampling supports moderate-rate single-channel acquisition (對比TLV0831CDR)
設計說明
Place the TLV0831CD close to the analog source and keep the input traces short. Provide local supply bypassing at the device and route the serial clock and data away from the analog input node. The verified data identifies an 8-pin SOIC and serial interface, but it does not provide a complete PCB layout; use the manufacturer pinout and recommended application circuit before release.
Treat the analog input and reference arrangement as a matched signal path. If using ratiometric operation, keep the divider and reference relationship consistent; if using VCC-reference operation, confirm that the supply is sufficiently clean and stable for the required measurement. The verified material does not specify input capacitance, acquisition time, or source-impedance limits, so those values must be taken from the manufacturer datasheet.
Do not select a replacement based only on the 8-bit resolution or SOIC package. A valid drop-in choice must also preserve the exact pinout, serial protocol, differential/single-ended capability, supply requirements, conversion timing, and temperature/qualification suffix. The verified alternatives are same-family TI variants, but their suffix-specific details are incomplete and require official ordering documentation before substitution.
合規資訊
The supplied verified results identify the manufacturer and product specifications but do not provide definitive environmental, material, or automotive qualification declarations for TLV0831CD. Obtain current TI documentation before making a compliance claim.