TLV0838CN - 8-Bit 37.9 kSPS 8-Channel SAR ADC | Texas Instruments
部品番号: TLV0838CN ⚠ ラストタイムバイ| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.8439 | $1.84 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TLV0838CN 概要
An ADC is a data-acquisition IC that converts an analog voltage into a digital code. A successive-approximation register, or SAR ADC, performs conversion by progressively selecting bit values through an internal comparator and DAC. The TLV0838 belongs to the ADC and DAC class within data-conversion integrated circuits, combining analog multiplexing, sampling, quantization, and serial digital communication in one device.
Key verified features include 8-bit resolution, a 37.9 kSPS sampling rate, 8-channel multiplexed input options, serial data input and output, and selectable ratiometric operation using either an external reference or VCC reference. The input range extends from VSS to VCC when the VCC reference is used. Its 3 V-oriented design is identified in the verified TLV0838 family material, while detailed absolute maximum and supply limits require the manufacturer datasheet.
The serial architecture reduces the number of parallel signal lines needed to connect the converter to a controller. Ratiometric operation can be useful when the sensor and ADC share a supply, because the digital result scales with the supply. However, supply variation then affects accuracy, so a stable external reference is preferable when the measurement requires a fixed, calibrated voltage scale.
Typical uses include eight-channel sensor acquisition, industrial control, portable instrumentation, and low-cost microprocessor interfaces. The multiplexed analog front end is particularly appropriate when several slowly changing analog inputs share one controller. The 37.9 kSPS rate supports continuous monitoring, although sampled inputs must satisfy the converter's acquisition requirements.
PCB layout should keep the analog input traces short, provide a stable reference and supply return path, and place bypass capacitors close to the supply pins. Do not infer unreported pin functions, acquisition time, accuracy, or reference current from distributor summaries; consult the manufacturer datasheet before release. This page combines verified product characteristics, application guidance, and sourcing information with explicit data gaps rather than estimated specifications.
ドロップイン代替品: TLV0838CN — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
TLV0838INE4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLV0838CN 最大定格＆電気的特性
| ADC Resolution | 8 bit |
| サンプリングレート | 37.9 kSPS |
| Architecture | Successive-approximation ADC (SAR) |
| Input Configuration | 4, 7, or 8 inputs |
| Input Type | Differential, pseudo-differential, or single-ended |
| Number of Channels | 8 channels |
| Multiplexer Type | Input-configurable analog multiplexer |
| Data Interface | Serial input/output |
| Digital Input Compatibility | TTL/MOS compatible |
| Digital Output Compatibility | TTL/MOS compatible |
| Reference Mode | Ratiometric external reference or VCC reference |
| 入力電圧範囲 | VSS to VCC with VCC reference |
| Nominal Supply Context | 3 V |
| パッケージ | 20-pin PDIP (N) |
| Package Pin Count | 20 pins |
| 実装タイプ | Through-hole |
| Operating Mode | Microprocessor interface or stand-alone operation |
| Product Status | Last Time Buy |
TLV0838CN 20 pins ピン配置ガイド
TLV0838CN (20 pins パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: TLV0838CN.
詳細は データシート をご参照ください。
主な用途
TLV0838CN の用途: 6 件s: Industrial Sensor Multiplexing, Low-Cost Microcontroller Interface, Portable Instrument Panel, Battery-Powered Monitoring, Automated Control System, Educational and Prototype Electronics.
Industrial Sensor Multiplexing
TLV0838CN fits industrial sensor acquisition when several slowly changing analog signals must share one controller. The verified 8-channel multiplexer, 8-bit conversion resolution, and 37.9 kSPS sampling rate provide a compact path for coarse measurement and monitoring. Connect the selected analog source to the ADC input and use the serial interface to transfer successive codes to a microcontroller. Because the supplied data does not specify input impedance, acquisition time, accuracy, or operating temperature, verify settling and industrial requirements against the manufacturer datasheet before deployment.
おすすめ
Low-Cost Microcontroller Interface
The TLV0838CN's serial input/output interface and TTL/MOS-compatible digital signals suit compact embedded systems that do not need a high-resolution ADC. A microcontroller can issue control and address information, latch the resulting 8-bit code, and process the measurement without a wide parallel bus. The verified 37.9 kSPS rate supports periodic sensor updates, while the 20-pin PDIP package remains useful for through-hole prototypes and serviceable industrial boards. Confirm clock timing, logic levels, and software protocol from the datasheet.
おすすめ
Portable Instrument Panel
TLV0838CN can support low-cost handheld instruments that monitor a small number of analog controls or sensors. Its 8-bit resolution is appropriate for position indicators, threshold inputs, and basic battery or system monitoring when higher precision is unnecessary. The multiplexed inputs reduce the number of separate converters, and the 37.9 kSPS rate allows more frequent updates than a slow display refresh requires. Use ratiometric operation only when supply variation is acceptable; otherwise apply a stable external reference and verify the full accuracy budget.
おすすめ
Battery-Powered Monitoring
For battery-operated equipment, TLV0838CN can provide compact analog monitoring alongside a low-power controller. The 8-channel multiplexing capability is useful when the design checks supply status, external thresholds, and simple sensor outputs. The verified 37.9 kSPS rate allows periodic or moderately continuous conversion, but average power depends on supply voltage, reference method, digital activity, and operating duration that are not specified in the supplied material. Select operating modes and capacitor values from the manufacturer recommendations, and account for battery voltage variation in the measurement reference.
おすすめ
Automated Control System
The TLV0838CN is suitable as an acquisition element in a small automated control loop when coarse analog feedback is sufficient. Its successive-approximation conversion and 37.9 kSPS rate can provide recurring sensor values for threshold decisions, actuator commands, or diagnostics. The serial interface reduces wiring complexity in a distributed control panel, while the 8-channel input option allows shared sensing. Engineers must independently validate loop latency, input settling, noise, and fault behavior because these details are not included in the verified web snippets.
おすすめ
Educational and Prototype Electronics
TLV0838CN is a practical learning component for teaching ADC conversion, multiplexed sampling, serial interfaces, and reference design because it combines an 8-bit SAR converter with multiple analog inputs. Students can observe how channel selection and reference choice affect the digital result, then compare ratiometric operation with a stable reference. Its 20-pin PDIP package is easier to inspect and prototype than a very dense fine-pitch package. The part should still be used under the exact supply, input, and timing limits stated in the manufacturer datasheet.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TLV0838CN — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TLV0838INE4 |
|---|---|---|
| Package | 20-pin PDIP (N) | 20-pin PDIP (N) - same reported package |
| Brand | Texas Instruments | Texas Instruments |
主な差別化要因
- Integrated multiplexed acquisition （vs TLV0838INE4)
- Conversion-rate positioning （vs TLV0838INE4)
- Documented sourcing status （vs TLV0838INE4)
設計ノート
Route the selected analog input, reference, and supply-return paths as short as practical, and keep digital control and serial-output traces away from sensitive analog nodes. Place bypass capacitors at the supply pins and use a quiet return path for the reference. Because the supplied data does not specify acquisition time or input impedance, validate source settling with the actual sensor or divider network rather than relying only on nominal conversion rate.
Define the supply and reference arrangement before layout. Ratiometric operation can simplify a sensor loop that shares the ADC supply, but supply variation changes the interpreted code and therefore the calibration. For fixed measurements, use a stable reference and include decoupling appropriate to the manufacturer guidance. The supplied material does not provide supply-current limits or capacitor values, so obtain those values from the current datasheet rather than estimating them.
Do not treat the 37.9 kSPS conversion rate as unlimited signal bandwidth. Source impedance, multiplexer settling, reference stability, and the controller's serial timing determine whether a channel can be sampled accurately. Also confirm the actual channel configuration and pin functions from the TLV0838CN datasheet; the provided web data confirms 4-, 7-, and 8-input options but does not provide a complete pin table.
コンプライアンス情報
The supplied web data does not include verified compliance declarations for TLV0838CN. Obtain current manufacturer or authorized-distributor documentation for the exact orderable MPN.
