TCA0372DP1 - 1A Dual Power Operational Amplifier | onsemi
MPN： TCA0372DP1 ✓ 啟用中TCA0372DP1 概覽
A power operational amplifier is an operational amplifier integrated with an output stage capable of supplying substantially more current than a conventional precision amplifier. This places the device within the hierarchy of operational amplifier, linear amplifier, analog signal amplifier, and integrated circuit. Unlike a switching regulator, the TCA0372DP1 amplifies an analog error or control signal while maintaining continuous conduction. Its power-output capability allows one dual amplifier package to serve both error amplification and high-current drive functions in feedback-controlled systems.
The primary headline characteristics are a 1.0 A maximum output current, a 5 V to 40 V operating supply range, and a 1.4 MHz gain-bandwidth product. The dual configuration provides two amplifier channels in one package, reducing board area in multi-axis servo or dual-channel drive systems. The lack of dead-band crossover distortion is particularly relevant when driving inductive coils because it avoids the command dead zone commonly introduced by power-output stages that switch between positive and negative drive states.
The TCA0372 is a monolithic circuit, allowing its internal drive and amplifier sections to share a common package and support direct analog feedback-control operation. In a typical servo amplifier, an external position or speed loop generates a command voltage, and the TCA0372 channel amplifies that command into a motor-drive signal. Feedback from the actuator closes the loop. The wide operating-voltage range also permits use with higher-voltage power systems when the remaining input, output, and thermal requirements are satisfied.
Typical uses include servo-amplifier output stages, closed-loop motor controllers, industrial actuator drivers, power-supply error amplifiers, and other systems that require analog feedback with a high-current output. For AC or bipolar drive arrangements, the external network must handle the required current and voltage excursions without exceeding the device's electrical limits. Heat management and output-stage stability are important when continuous load operation approaches the output-current rating.
Circuit implementation should preserve the feedback connection at the amplifier output and minimize PCB-trace resistance between the power-output pins and the load. Input and output decoupling should follow the manufacturer's recommended application circuit. Because the amplifier dissipates power internally, designers should calculate worst-case output dissipation, provide adequate copper area, and verify that the ambient temperature and load waveform keep junction temperature within the qualified operating range.
This product page combines the exact TCA0372DP1 electrical and package identifiers with datasheet references, application guidance, and a package-aware comparison. It also distinguishes documented functions from parameters requiring confirmation in the manufacturer datasheet. The result is a practical engineering reference for evaluating whether this dual, high-current operational amplifier matches a servo, power-supply, or inductive-drive design without confusing it with a switching power converter.
直接替換替代品，適用於 TCA0372DP1 — 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： TCA0372DP1 （相同外形與佔位） — 差異在於 Package.
TCA0372DP1G
✅ 直接替換📋 參考替代品（不在目錄中）
TCA0372DP2
✅ 直接替換聯絡詢價
查看資料表 →TCA0372DP1 最大額定值與電氣特性
| Amplifier Type | Dual power operational amplifier |
| Number of Channels | 2 channels |
| 最大輸出電流 | 1.0 A |
| Supply Voltage Range | 5 V to 40 V |
| Gain-Bandwidth Product | 1.4 MHz |
| Crossover Distortion | No deadband crossover distortion |
| 封裝 | 8-PDIP |
| 腳位數 | 8 pins |
| 安裝類型 | Through-hole |
| Pitch | 7.62 mm |
| Body Width | 0.300 inch |
TCA0372DP1 8-pdip 腳位配置指南
TCA0372DP1（8-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： TCA0372DP1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TCA0372DP1 適用於 6 應用s: Servo Amplifier Output Stage, Closed-Loop Motor Controller, Industrial Actuator Driver, Power-Supply Error Amplifier, Inductive Coil Drive, Position and Speed Feedback Amplifier.
Servo Amplifier Output Stage
The TCA0372DP1 fits a servo-amplifier output stage because either channel can combine analog error amplification with drive current up to 1.0 A. Place the device in the forward path between the command-generating loop and an actuator coil, with feedback connected at the load so drive current and position are corrected continuously. Its 5 V to 40 V operating range supports higher-voltage actuator systems, while the dual-channel configuration can serve two related axes or complementary control functions. The absence of deadband crossover distortion is especially valuable near the zero-command transition, where coil current must reverse direction without an artificial command gap. Final suitability depends on the coil's resistance, inductance, peak current, current slew rate, and continuous duty cycle.
推薦
Closed-Loop Motor Controller
The TCA0372DP1 is appropriate for a closed-loop motor controller that requires more output drive than a conventional signal amplifier can provide. Its 1.0 A output-current capability allows a control signal to drive a motor winding directly when the voltage and thermal limits are suitable. The 1.4 MHz gain-bandwidth product supports applications where the control loop must respond faster than a slow power-output stage. A practical implementation uses an external position or current sensor, analog error amplification, and feedback routed to the appropriate input. Because the package contains two channels, a second channel can monitor feedback or control another related actuator. Motor inductance, back-EMF, braking energy, and stall conditions must be evaluated before selecting the device.
推薦
Industrial Actuator Driver
The TCA0372DP1 can form the high-current output section of an industrial actuator driver when the load operates within its 1.0 A current and 5 V to 40 V voltage envelope. The dual amplifier allows one channel to provide drive current while the other provides monitoring, error amplification, or a complementary drive function in a qualified circuit. Its no-deadband crossover characteristic helps maintain responsive bidirectional control of coils and electromechanical actuators. Designers should include current limiting and fault shutdown, and should account for inductive stored energy with suitable clamping paths. Continuous dissipation at high current, ambient temperature, copper area, and protective-network losses determine whether a heat sink or additional board area is necessary.
推薦
Power-Supply Error Amplifier
The TCA0372DP1 can serve as a power-supply error amplifier when the design requires a high-current, high-voltage output rather than the low-current drive typical of a precision op amp. Its monolithic dual-power-amplifier architecture supports feedback-based regulation, while the 5 V to 40 V supply range accommodates elevated bus voltages. A practical topology compares a scaled output voltage or current signal with a reference and drives the power stage through the amplifier output. The device's 1.0 A output-current rating gives ample drive capability for many external power transistors or power modules. Stability must be verified with the actual compensation network, load capacitance, transformer or inductor dynamics, and control-loop bandwidth. Thermal analysis should include both the TCA0372DP1 and the external power stage.
推薦
Inductive Coil Drive
The TCA0372DP1 is well matched to inductive coil drives because it can supply up to 1.0 A and avoids the deadband crossover distortion identified in the manufacturer datasheet. This helps the control system command current through the zero crossing without a nonlinear dead zone. The amplifier should be used with external current limiting, slew-rate-compatible feedback, and an appropriate clamp or freewheel path for inductive stored energy. Because the device can dissipate substantial power when operating near low output voltage, the worst-case coil current, duty cycle, ambient temperature, and copper thermal resistance must be calculated together. The 1.4 MHz gain-bandwidth product allows a reasonably fast inner loop, but compensation must be validated with the actual coil resistance, inductance, and load network.
推薦
Position and Speed Feedback Amplifier
The TCA0372DP1 can implement a position or speed feedback amplifier when the actuator interface requires both low-level signal handling and substantial output-drive capability. One channel may amplify the error signal generated by a position sensor, while the other may amplify a speed-derived command or monitor the feedback node. Its 1.4 MHz gain-bandwidth product can support control loops whose bandwidth is limited mainly by the actuator and mechanical system. The wide 5 V to 40 V supply range provides compatibility with higher-voltage control buses, although input common-mode and output-swing limits must still be checked. Practical designs require careful grounding around high-current returns so the amplifier does not amplify output-current-induced voltage drops. Sensor filtering, protection, calibration, and loop compensation should be validated in the completed system.
推薦
推薦產品摘要
工程參考資料，適用於 TCA0372DP1 — 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 | TCA0372DP1G | TCA0372DP2 |
|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | onsemi | onsemi | onsemi |
| Amplifier Configuration | Dual power operational amplifier | Dual power operational amplifier | Dual power operational amplifier |
| Pin Count | 8 pins | 8 pins | 8 pins |
| Mounting Type | Through-hole | Through-hole | Through-hole |
主要差異化特點
- High-current analog drive in a dual amplifier (對比TCA0372DP1G)
- Responsive coil control without deadband crossover (對比TCA0372DP2)
- Through-hole power-amplifier footprint (對比TCA0372DW)
設計說明
Calculate the worst-case internal dissipation from the actual output voltage and load duty cycle rather than relying only on the 1.0 A current rating. Estimated: with a 20 V output and 0.5 A continuous load, the output-stage dissipation is approximately 10 W before accounting for bias and external-network losses. Use the manufacturer's electrical limits and thermal information, provide maximum practical copper area, and verify junction temperature at the highest ambient temperature.
Keep the high-current output path short and use conductors with sufficient copper cross-section for the load current. Place output decoupling and protection components close to the relevant pins, and separate power-output returns from precision feedback returns where practical. Because the device is an 8-PDIP package, inspect lead spacing, solder-joint integrity, and available board area during layout rather than applying surface-mount land-pattern assumptions.
Do not assume that a related TCA0372 order code is interchangeable merely because the family name and package designation match. Compare pin functions, supply limits, output-current capability, thermal ratings, and ordering information for the exact suffix. For inductive loads, also include suitable current limiting and an energy-storage path; an amplifier output rating alone does not make the external drive network safe.
Route the feedback connection directly from the load-side output node so that voltage drops in high-current traces do not enter the control loop. Keep sensitive input and feedback traces away from switching nodes and high-current return paths. Ground and power-distribution arrangements should be evaluated at both low and maximum load because output-stage current can introduce feedback errors even when the amplifier itself is operating correctly.
合規資訊
No definitive RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements were established for the exact TCA0372DP1 ordering code. Confirm these attributes with onsemi before using the device in a regulated production program.
