TLV0834CN - 8-Bit 41 kSPS 4-Channel ADC | Texas Instruments
MPN： TLV0834CN ✓ 啟用中TLV0834CN 概覽
An ADC is a data-acquisition IC that converts an analog voltage into a numeric value for processing, storage, or control. The TLV0834CN belongs to the successive-approximation ADC family within analog-to-digital converters, data-converter ICs, and semiconductor signal-processing devices. Its multiplexer permits one ADC core to sample several analog inputs sequentially, reducing component count when multiple sensors or potentiometers must be measured.
Key features include 8-bit resolution, a maximum conversion rate of 41 kSPS, four analog input channels, and serial digital output. The input range extends from V to VCC, while operation can be ratiometric or referenced to VCC. The integrated input amplifier supports TTL/MOS-compatible interfacing, and the output stage is designed for convenient connection to microprocessor and embedded-control systems.
The device uses a successive-approximation conversion architecture. During each conversion, the internal comparator and successive-approximation register progressively determine the input voltage and produce an 8-bit code. The four channels are selected through address logic, allowing a controller to configure the analog multiplexer, initiate a conversion, and read the result through the serial interface.
Typical uses include industrial sensor monitoring, instrumentation, data acquisition, embedded control, and low-speed measurement systems. The device can evaluate temperature, position, pressure, light, or resistive sensor outputs when their signal levels remain within the V-to-VCC input range. It is also appropriate for control loops requiring moderate sampling rates rather than high-speed waveform capture.
A key design consideration is the relationship between VCC, the reference configuration, and the analog input range. Designers must keep all sampled voltages within the specified input range, allow sufficient acquisition time for the source impedance, and select interface timing that satisfies the serial-output requirements. Because no verified pinout or timing table was supplied in the source data, this page does not infer individual pin assignments.
This page combines verified distributor specifications and pricing with practical application guidance, comparison parameters, design notes, and same-family replacement analysis. Those additions help engineers evaluate the TLV0834CN as an embedded, low-speed, multiplexed measurement converter without implying unverified electrical details.
直接替換替代品，適用於 TLV0834CN — 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： TLV0834CN （相同外形與佔位） — 差異在於 Reference Mode.
TLV0831CN
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV0832CN
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLV0834CN 最大額定值與電氣特性
| 解析度 | 8 bit |
| Conversion Rate | 41 kSPS |
| Architecture | Successive-approximation ADC (SAR) |
| Channel Count | 4 analog input channels |
| 供應電壓 | 3 V nominal |
| Maximum Supply Voltage | 3.6 V |
| Analog Input Range | V to VCC |
| Reference Mode | Ratiometric or VCC reference |
| Output Interface | Serial output |
| Input Amplifier Compatibility | TTL/MOS-compatible input amplifier |
| Output Compatibility | Microprocessor-compatible output |
| 封裝 | 14-pin PDIP |
| Package Type | Through-hole PDIP |
| Operating Mode | Microprocessor interface or stand-alone operation |
| Multiplexer | 4-channel analog multiplexer with address logic |
| Remote Operation | Supported |
TLV0834CN through-hole pdip 腳位配置指南
TLV0834CN（through-hole pdip 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： TLV0834CN.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLV0834CN 適用於 6 應用s: Industrial Sensor Monitoring, Embedded Data Acquisition, Instrumentation and Control Panels, Battery-Powered Sensor Nodes, Potentiometer and Position Readout, Low-Speed Process Control.
Industrial Sensor Monitoring
The TLV0834CN fits industrial monitoring systems that must scan several slowly changing analog sensor outputs. Its four multiplexed inputs reduce the number of separate converters, while the 8-bit resolution and 41 kSPS conversion rate provide adequate sampling for temperature, level, and position measurements. The V-to-VCC input range simplifies systems in which sensors are conditioned to the supply rail. Engineers should verify acquisition time against each sensor's output impedance and apply input filtering where wiring noise or switching transients could affect code stability.
推薦
Embedded Data Acquisition
The TLV0834CN is useful in embedded data-acquisition modules that gather several analog measurements and send them to a host controller. Its 41 kSPS SAR conversion capability is sufficient for many temperature, potentiometer, and slow process variables, while the serial interface limits pin usage compared with a parallel ADC. Because the verified sources do not provide acquisition-time or full-timing values, the design should preserve adequate settling time for each source and validate the complete sampling sequence against the manufacturer datasheet.
推薦
Instrumentation and Control Panels
The TLV0834CN supports instrumentation panels that monitor several potentiometers, dividers, or conditioned sensor channels through a common ADC. The four-channel multiplexer reduces repeated converter circuitry and provides an economical way to collect operator controls or analog process values. Its 8-bit resolution is appropriate for display-level measurements and basic supervisory control, while the V-to-VCC range makes signal-level planning straightforward. Calibration, channel crosstalk, and reference accuracy should be evaluated for precision instrument requirements.
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Battery-Powered Sensor Nodes
The TLV0834CN can serve in battery-powered sensor nodes when the measured variables change slowly and the node must avoid a high-power parallel interface. The 41 kSPS conversion rate supports periodic scans of four channels, and the serial output can reduce connection count to a microcontroller. Low-power suitability remains system-dependent because no verified operating-current or shutdown-current values were supplied. Designers should compare the complete converter duty cycle with the node's average-current budget and disable unused channels or the device when the available data supports those controls.
推薦
Potentiometer and Position Readout
The TLV0834CN is appropriate for multi-axis position or potentiometer readout where several resistive dividers must be measured with a shared converter. Four multiplexed channels allow one ADC to track multiple controls while maintaining the 8-bit resolution commonly sufficient for coarse position indication and user-interface knobs. Signals should remain within the V-to-VCC range, and the application must avoid changing channels before the previous conversion and acquisition interval have completed. Mechanical switch bounce and potentiometer wiper noise may also require filtering.
推薦
Low-Speed Process Control
The TLV0834CN can provide feedback measurements for slow closed-loop industrial processes, particularly when multiple actuator or sensor nodes report voltage levels to one controller. Its 41 kSPS SAR architecture gives the controller frequent updates without the complexity of a high-speed converter. The device is better suited to supervisory loops than millisecond-scale precision control, and its 8-bit resolution limits closed-loop authority unless amplified or digitally compensated. Reference stability, input filtering, and control-loop delay should be considered during implementation.
推薦
推薦產品摘要
工程參考資料，適用於 TLV0834CN — 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 | TLV0831CN | TLV0832CN |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-pin PDIP | 14-pin PDIP - same package | 14-pin PDIP - same package |
| Resolution | 8 bit | 8 bit | 8 bit |
| Conversion Rate | 41 kSPS | 41 kSPS | 41 kSPS |
| Architecture | Successive-approximation ADC (SAR) | Successive-approximation ADC (SAR) | Successive-approximation ADC (SAR) |
| Analog Channel Count | 4 channels | 1 channel | 2 channels |
| Output Interface | Serial output | Serial output | Serial output |
主要差異化特點
- Higher analog-channel count in the same-family PDIP devices (對比TLV0832CN)
- Twice the channel capacity of the single-channel family member (對比TLV0831CN)
- Maintains the family's key conversion performance (對比TLV0832CN)
設計說明
Do not replace the four-channel TLV0834CN with TLV0831CN or TLV0832CN without checking channel availability and address logic. Although the alternatives use the same-family 8-bit, 41 kSPS serial ADC architecture in a 14-pin PDIP package, they provide one and two channels rather than four. Existing PCB routing and firmware may therefore require modification despite the matching package count.
Keep analog input traces short and place the associated input-network components close to the ADC. High source impedance can require additional acquisition time, which was not quantified in the supplied verified data. Confirm the maximum source impedance and acquisition-time limits from the manufacturer datasheet, and avoid routing analog inputs beside switching-converter or high-current traces where coupling could increase code noise.
Plan the analog and digital return paths so the TLV0834CN receives a low-impedance VCC connection and a stable ground reference. Since ratiometric operation can relate the converted code to VCC, supply ripple may affect measurements if the reference is shared with the sensed signal. Decouple the supply near the device according to the manufacturer recommendations and evaluate whether an external precision reference is required for higher measurement accuracy.
Treat channel selection, conversion control, and serial data as a coordinated timing interface. The supplied snippets do not include the complete address table or serial timing diagram, so firmware should be written directly from the manufacturer sequence rather than inferred from neighboring devices. Verify the settling interval, conversion-complete behavior, data-edge definition, and whether channel selection may change during a conversion before optimizing the scan loop.
合規資訊
The supplied distributor and datasheet search results did not provide verified RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 qualification was not stated and is treated as not applicable because this is a general-purpose through-hole ADC rather than a verified automotive-qualified variant.