TLV271CD - 3 MHz, 16 V Low-Power RRO Op Amp | Texas Instruments
MPN： TLV271CD ✓ 啟用中TLV271CD 概覽
An operational amplifier is a voltage-controlled differential amplifier whose high open-loop gain makes closed-loop amplification practical when negative feedback defines the gain and bandwidth. The TLV271 belongs to the operational-amplifier, analog-amplifier, and semiconductor hierarchy. Its rail-to-rail output stage lets the output approach either supply rail under suitable load conditions, improving usable swing in low-voltage systems. The CMOS implementation also supports low power consumption, although total supply current depends on supply voltage, output activity, and load.
The TLV27x family combines a 3 MHz bandwidth with 550 µA of supply current per channel and a 2.4 V/µs slew rate. According to the Texas Instruments manufacturer datasheet, the devices operate from 2.7 V to 16 V over an extended industrial temperature range of -40 °C to +125 °C. The verified search data identifies the TLV271CD as the commercial-grade 8-SOIC ordering variant. Its low quiescent current is valuable in battery-powered instrumentation, while its 3 MHz bandwidth is more useful than a micropower unity-gain-stable amplifier when moderate closed-loop bandwidth is required.
The amplifier's architecture is suitable for voltage buffers, current-sensing interfaces, sensor amplification, and general-purpose analog filtering. Rail-to-rail output operation is especially relevant when the signal must use much of the available supply range. Designers should still check input common-mode range, output load, capacitive-load stability, and noise specifications in the manufacturer datasheet rather than assuming that rail-to-rail output also means rail-to-rail input. Stable feedback ratios and conservative capacitive loading help prevent oscillation.
Typical uses include portable measurement systems, industrial sensor interfaces, low-voltage audio or communication blocks, active filters, and embedded control. The 3 MHz bandwidth allows higher closed-loop bandwidth than very-low-frequency precision amplifiers, while the 550 µA-per-channel current keeps demand modest. At low supply voltages, usable swing and input range become important design limits; at high frequencies, board parasitics and probe loading can materially alter observed performance.
For implementation, bypass each supply pin with local decoupling and route feedback traces away from input and output nodes. Avoid placing large capacitive loads directly at the output unless the datasheet stability limits are checked. The main engineering trade-off is the combination of low power, moderate 3 MHz bandwidth, and single-supply rail-to-rail output: TLV271CD is not automatically interchangeable with op amps having different input architecture, noise, or compensation.
This page consolidates the verified manufacturer specifications, distributor availability links, practical design notes, and explicitly qualified alternatives for engineers evaluating the TLV271CD in analog signal-chain designs.
直接替換替代品，適用於 TLV271CD — 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。
此產品無可直接替換的替代品。
申請替代品TLV271CD 最大額定值與電氣特性
| Amplifier Type | Single operational amplifier |
| Number of Channels | 1 channel |
| Supply Voltage Range | 2.7 V to 16 V |
| Maximum Supply Voltage | 16 V |
| Gain-Bandwidth Product | 3 MHz |
| Slew Rate | 2.4 V/µs |
| 供應電流 | 550 µA/channel |
| 輸出類型 | Rail-to-rail output |
| Input Noise Voltage | 39 nV/√Hz |
| Input Bias Current | 1 pA specified at temperatures up to 70 °C |
| 工作溫度範圍 | -40 °C to +125 °C |
| Commercial Grade Temperature | 0 °C to +70 °C |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
| Device Type | CMOS amplifier |
| Primary Application | Low-power rail-to-rail output signal conditioning |
TLV271CD 8-pin soic 腳位配置指南
TLV271CD（8-pin soic 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： TLV271CD.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLV271CD 適用於 6 應用s: Low-Power Sensor Signal Conditioning, Portable Measurement Front End, Industrial Sensor Interface, Active Analog Filter, Communication Signal Buffer, Portable Audio or Control Amplifier.
Low-Power Sensor Signal Conditioning
The TLV271CD fits battery-powered sensor interfaces that need more bandwidth than a very-low-frequency micropower amplifier while keeping supply current near 550 µA per channel. Place the amplifier in a non-inverting or differential conditioning stage after checking the sensor's output range and the TLV271CD input common-mode limits. Its 3 MHz gain-bandwidth product supports moderate closed-loop bandwidth, while rail-to-rail output can improve utilization of a 2.7 V-to-16 V single supply. Verify noise, offset, bias current, and stability in the final operating point.
推薦
Portable Measurement Front End
The TLV271CD is useful in portable measurement equipment where a single low-power analog amplifier must handle sensor signals without a high-current rail-to-rail output stage. The verified 550 µA-per-channel supply current and 3 MHz bandwidth make it a reasonable fit for buffering, gain conditioning, and active filtering. Use local supply bypassing and short feedback paths to preserve stability. At low supply voltages, confirm output headroom and input range for the measured signal rather than assuming full rail-to-rail operation at both input and output terminals.
推薦
Industrial Sensor Interface
The TLV271CD can condition low-frequency and moderate-bandwidth signals from industrial sensors when the interface must operate from a single supply. Its -40 °C to +125 °C extended industrial temperature family specification supports a broad range of industrial environments, while the 3 MHz bandwidth handles faster sensor dynamics than a conventional low-frequency amplifier. Confirm the actual commercial-grade ordering variant, transient protection, input filtering, and output load. Keep the analog trace short and provide stable reference or sensor-return paths to avoid converting conducted interference into measurement error.
推薦
Active Analog Filter
The TLV271CD can implement first- and higher-order active-filter stages when the filter's gain and bandwidth remain compatible with the amplifier's 3 MHz gain-bandwidth product. The 2.4 V/µs slew rate helps preserve signal amplitude for moderate-frequency waveforms, and the low 550 µA-per-channel current supports compact multi-stage analog designs. Use the manufacturer stability and noise data to select capacitor values and resistor gains. Check output swing carefully at low supply voltage, because rail-to-rail output does not eliminate all output-current or loading limitations.
推薦
Communication Signal Buffer
The TLV271CD can serve as a low-power buffer or gain stage in communication and interface circuits that require a rail-to-rail output and moderate bandwidth. The verified 16 V maximum supply and 3 MHz bandwidth provide useful headroom for low-voltage signal conditioning, but the designer must verify input common-mode range and output drive at the intended logic or analog load. Place the device close to the driven node, use a short ground return, and avoid excessive capacitive loading. For high-speed digital interfaces, use a dedicated transceiver rather than assuming this amplifier provides complete interface compliance.
推薦
Portable Audio or Control Amplifier
The TLV271CD can support small-signal audio or control amplification when low supply current and improved output swing are more important than high-fidelity audio performance. Its 3 MHz bandwidth is sufficient for many control and voice-band signal paths, while rail-to-rail output helps maximize signal amplitude from a low-voltage supply. Verify input noise, output distortion, speaker or load drive requirements, and stability before selecting it for an audio output. The verified 39 nV/√Hz input-noise figure should be compared against the complete signal-chain noise budget rather than used as a standalone sound-quality claim.
推薦
推薦產品摘要
工程參考資料，適用於 TLV271CD — 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 |
|---|---|
| Package | 8-pin SOIC |
| Brand | Texas Instruments |
| Number of Channels | 1 channel |
| Supply Voltage Range | 2.7 V to 16 V |
| Gain-Bandwidth Product | 3 MHz |
| Slew Rate | 2.4 V/µs |
| Supply Current | 550 µA/channel |
| Output Architecture | Rail-to-rail output |
| Operating Temperature Range | -40 °C to +125 °C |
| Input Noise Voltage | 39 nV/√Hz |
主要差異化特點
- Low-power wide-bandwidth combination (對比TLV9151)
- Rail-to-rail output architecture (對比TLV271CD versus unspecified conventional-output alternatives)
- Single-channel SOIC integration (對比TLV271CD versus dual-channel amplifier alternatives)
設計說明
Use the verified 2.7 V to 16 V supply range as the design boundary and place the bypass capacitor close to the amplifier supply pins. At a single 3.3 V rail, estimate the static supply draw from the 550 µA-per-channel family value before adding load current. Confirm the operating point with the Texas Instruments datasheet because input common-mode voltage, output swing, and load can change measured current. Do not use the maximum supply rating as a target operating voltage.
Route the feedback network and amplifier output as short, compact traces, and keep the input node away from the output and supply-return paths. A common SOIC layout should include local supply decoupling and a quiet ground return; excessive trace length or high-impedance input routing increases susceptibility to noise and parasitic feedback. Check the exposed thermal and electrical requirements of the specific package variant against the manufacturer drawing before releasing artwork.
Do not assume rail-to-rail output means rail-to-rail input. Verify the TLV271CD input common-mode range for the sensor or source voltage, and calculate output headroom into the actual load. Also avoid presenting 3 MHz as guaranteed closed-loop bandwidth at every gain: noise gain, resistor values, compensation, and capacitive loading determine practical stability and bandwidth.
合規資訊
The supplied verified data does not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. The TLV271CD is an operational amplifier rather than an AEC-Q100 automotive-qualified device designation in the supplied data.