TL082CDR - Dual 30V 3MHz JFET Op Amp | Texas Instruments
料号： TL082CDR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TL082CDR 概述
A JFET-input operational amplifier is a voltage-amplifier device whose input stage limits input bias current while preserving low-noise behavior. In the broader semiconductor hierarchy, the TL082 belongs to the operational-amplifier class, then analog ICs, amplifiers, and signal-chain components. Its wide supply capability makes it suitable for industrial and instrumentation circuits operating from split or single positive rails up to the manufacturer's stated 30 V limit.
The verified family description identifies the TL082 as a dual amplifier rated for 30 V operation with 3 MHz bandwidth and 13 V/us slew rate. These headline values provide enough bandwidth for audio, buffering, active filtering, sensor interfaces, and general feedback-control loops. Because the target is specified as TL082CDR, the package and order-code details should be confirmed against the Texas Instruments product page and manufacturer datasheet before production release.
The device uses JFET-input transistors followed by bipolar signal-processing circuitry, providing high input resistance and relatively low input bias current. This input architecture is useful when driving high-impedance sources such as sensors, photodiodes, or measurement probes. The 3 MHz bandwidth also makes the amplifier suitable for small-signal stages rather than high-frequency, high-current, or power-amplifier applications.
Typical uses include dual-channel audio preamplification, low-leakage sensor interfaces, active filters, sample-and-hold buffers, and dual feedback-control channels. Designers should pay attention to supply bypass, output-current limits, input common-mode range, output swing, stability with capacitive loads, and the exact pinout of the 8-SOIC package. Decoupling capacitors should be placed close to the supply pins to reduce parasitic inductance and preserve low-noise behavior.
The principal design trade-off is flexibility versus precision: a general-purpose JFET input amplifier is easy to apply across many signals, but it may not match dedicated low-noise, low-offset, high-speed, or precision amplifier architectures. For replacement decisions, compare supply voltage, input bias current, offset voltage, bandwidth, slew rate, common-mode range, output swing, package pins, and required noise performance rather than relying only on the TL082 name.
This page synthesizes the verified manufacturer description, distributor listings, package information, and practical selection considerations for engineers evaluating the TL082CDR. It also identifies which electrical and compliance values require confirmation from the manufacturer datasheet rather than inference.
直接替换替代料： TL082CDR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TL082HIDR
✅ 直接替换📋 参考替代料（不在目录中）
TL082IDR
✅ 直接替换📋 参考替代料（不在目录中）
TL082CMX
✅ 直接替换📋 参考替代料（不在目录中）
TL082CDR 最大额定值与电气特性
| Product Type | Dual JFET-input operational amplifier |
| Number of Amplifier Channels | 2 |
| Maximum Supply Voltage | 30 V |
| Gain-Bandwidth Product | 3 MHz |
| Slew Rate | 13 V/us |
| Input Architecture | JFET-input |
| 输出类型 | Push-pull |
| 封装 | 8-SOIC, 0.154 inch width, 3.90 mm width |
| 安装类型 | Surface mount |
TL082CDR 8-soic, 0.154 inch width, 3.90 mm width 引脚配置指南
TL082CDR（8-soic, 0.154 inch width, 3.90 mm width 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： TL082CDR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TL082CDR 适用于 6 应用s: Dual Audio Preamplifier, High-Impedance Sensor Buffer, Active Audio Filter, Instrumentation Signal Conditioning, Sample-and-Hold Buffer, Low-Frequency Feedback Control.
Dual Audio Preamplifier
The TL082CDR fits dual audio preamplifier channels because its two amplifiers share an 8-SOIC package, while the verified 3 MHz bandwidth and 13 V/us slew rate provide margin for low-frequency and mid-frequency program material. Each channel can implement gain, tone, or impedance buffering around the same signal path. Place local supply bypass close to the power pins and confirm output swing, input common-mode range, and noise before fixing the stage gain. This is a general-purpose amplifier rather than a specified low-noise audio part, so headroom and distortion should be evaluated with the actual load and supply voltage.
推荐
High-Impedance Sensor Buffer
The TL082CDR can serve as an input buffer for high-impedance sensors where low input loading is important. Its JFET-input architecture is electrically aligned with source-follower or high-impedance gain-stage use, while the 3 MHz bandwidth is more than adequate for many slow sensor signals. The designer must still verify the actual input bias current, input capacitance limits, common-mode range, and noise from the TI datasheet. Use short, guarded PCB traces and a nearby ground reference to reduce leakage and capacitive pickup, especially with photodiode, capacitive, or electrostatic sensors.
推荐
Active Audio Filter
The TL082CDR is suitable for active low-pass, high-pass, or band-pass filter sections in audio and instrumentation circuits when the desired corner frequency is comfortably below the verified 3 MHz gain-bandwidth product. The 13 V/us slew rate helps preserve low distortion for signals with moderate amplitude and bandwidth. Build each filter section around one channel, check the closed-loop stability of the chosen topology, and keep passive components close to the relevant pins. The dual package can implement a matched stereo pair, although exact resistor, capacitor, and common-mode limits must be taken from the manufacturer documentation.
推荐
Instrumentation Signal Conditioning
The TL082CDR can condition instrumentation signals when the source has high impedance and the circuit requires general-purpose gain or buffering. Its JFET input stage helps reduce loading, and the 3 MHz bandwidth provides useful margin for low-bandwidth measurement channels. Use one channel for signal conditioning and the other for reference, monitor, or auxiliary processing when useful. Verify the actual input offset, bias current, common-mode range, output swing, and supply limits because those values are not included in the verified snippets. A precision resistor network and clean grounding are as important as the amplifier choice.
推荐
Sample-and-Hold Buffer
The TL082CDR is a plausible dual buffer for sample-and-hold or sample-and-buffer circuits where the input source is relatively high impedance and the signal bandwidth is modest. The dual arrangement allows one channel to sample or buffer while the other handles a related signal or provides an active reference. The verified 3 MHz bandwidth and 13 V/us slew rate are the key starting parameters, but switching transients, capacitor leakage, settling behavior, and output loading require circuit-level analysis. Keep the feedback components stable and avoid placing long, unprotected high-impedance traces next to switching nodes.
推荐
Low-Frequency Feedback Control
The TL082CDR can be used in low-frequency feedback-control loops where the control signal does not require the bandwidth of a precision or high-speed amplifier. The JFET input stage is useful with high-impedance feedback networks, while the 3 MHz bandwidth provides substantially more signal-path capability than many slow control loops. Confirm phase margin, output swing, load capability, and supply limits in the completed loop. For mains-derived or safety-critical equipment, do not infer isolation, surge tolerance, or compliance from the generic amplifier specifications; those requirements need separate system-level qualification.
推荐
工程参考数据： TL082CDR ——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 | TL082HIDR | TL082IDR | TL082CMX |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
关键差异点
- Verified dual-channel integration （对比 TL084)
- JFET-input signal conditioning （对比 NE5532)
- 3 MHz bandwidth and 13 V/us slew rate （对比 TL082HIDR)
设计说明
Use the verified 30 V maximum supply rating as a device-level constraint, not as a recommended operating point. Confirm the actual operating range, input common-mode limits, output swing, and quiescent current in the TI datasheet before selecting the rail. Place local supply bypass capacitors close to the power pins and return their ground connections through a low-impedance path. The exact capacitor values and ESR requirements are not supplied by the verified data, so do not treat any guessed compensation network as production-ready.
Keep the two amplifier channels physically separated when they carry unrelated high-gain signals, and route high-impedance input nodes with short traces, guard structures where appropriate, and a continuous ground plane. Avoid placing the input path beside power inductors, switching nodes, or connector pins that can couple displacement current. The supplied data identifies an 8-SOIC surface-mount package but does not provide a verified land pattern, so use the official package drawing for footprint dimensions and pin numbering.
Do not assume that every TL082-family order code is interchangeable solely because it uses the same family name. Verify pin names, supply limits, temperature grade, offset behavior, and compliance for TL082CDR and the proposed replacement. Also verify stability with the actual source impedance, load capacitance, feedback network, and output drive requirement. The verified snippets do not provide enough pin-level or full electrical data to justify a production substitution without those checks.
合规信息
The supplied verified snippets identify the manufacturer, package, amplifier type, and distributor sources but do not provide official RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 statements. Compliance must be confirmed from the current TI product documentation and applicable order-code records.
