OPA77GP - 0.3V/us Precision Op Amp, 8-PDIP | Texas Instruments
MPN: OPA77GP ✓ Hoạt độngOPA77GP Tóm tắt
An operational amplifier, or op amp, is the active building block at the center of analog signal chains. Its voltage-feedback topology compares two inputs and drives an output to reduce their difference. Within the wider hierarchy of semiconductor devices, an op amp belongs to the amplifier IC category, which sits within analog and mixed-signal integrated circuits. Instrumentation amplifiers, buffers, active filters, transimpedance circuits, and precision control loops are common applications built around this function.
The OPA77GP differentiates itself through its precision general-purpose positioning and a verified 0.3 V/µs slew rate. The eight-pin through-hole package supports prototyping, repair, educational instrumentation, and industrial analog boards where a socketed or leaded package is easier to assemble than a fine-pitch surface-mount package. The commercial temperature grade and DIP format also distinguish it from variants intended for automated SMT assembly or automotive qualification.
OPA77GP uses a bipolar operational-amplifier architecture according to the verified product summaries. Bipolar input stages are commonly selected when low input-offset behavior and predictable precision are priorities. The 0.3 V/µs slew rate determines how quickly the output can move through larger voltage changes, which matters when the amplifier drives capacitive loads or processes rapidly changing signals. Exact offset voltage, input-bias current, gain-bandwidth product, supply range, and common-mode limits were not included in the supplied source excerpts.
Typical uses include bridge-amplifier front ends, precision current sensing, laboratory measurement modules, low-frequency active filters, sensor signal conditioning, and closed-loop control. In these applications, the OPA77GP can amplify a small differential sensor signal while preserving the accuracy expected from a precision amplifier. Its 8-PDIP format is especially useful when a design must be manually assembled, repaired in the field, or implemented without fine-pitch production equipment.
Designers should verify the complete electrical limits and pin assignment against the manufacturer datasheet before finalizing a new circuit. Decoupling, input common-mode range, output swing, load stability, and supply-voltage limits are especially important for precision analog designs. The supplied excerpts do not provide complete numeric values for those parameters, so the manufacturer documentation remains the controlling engineering reference.
This product page consolidates verified distributor identification, package information, sourcing links, precision-op-amp application context, and drop-in candidate guidance. It also distinguishes verified facts from parameters that still require direct datasheet confirmation, helping engineers evaluate procurement and design fit without treating incomplete distributor excerpts as complete specifications.
Bộ thay thế dễ dàng lắp đặt cho OPA77GP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
OP77
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
OPA177GP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
OPA277GP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
OPA377GP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
OPA467GP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
OPA77GP Tỷ lệ tối đa & tính chất điện
| Amplifier Type | Precision operational amplifier |
| Number of Circuits | 1 circuit |
| Slew Rate | 0.3 V/µs |
| Architecture | Bipolar |
| Product Classification | Standard general-purpose amplifier |
| Package Type | 8-PDIP |
| Số chân | 8 pins |
| Terminal Count | 8 terminals |
| Kiểu lắp đặt | Through-hole |
| Temperature Grade | Commercial |
| Package Shape | Rectangular |
Hướng dẫn cấu hình chân OPA77GP rectangular
Cấu hình chân cho OPA77GP (rectangular gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho OPA77GP.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
OPA77GP phù hợp cho 6 Áp dụngs: Precision Sensor Signal Conditioning, Bridge and Current-Sense Amplification, Laboratory Instrumentation, Precision Active Filtering, Industrial Feedback Control, Precision Buffering and Level Conditioning.
Precision Sensor Signal Conditioning
OPA77GP is appropriate for conditioning a low-level differential sensor signal in an instrumentation front end. Its verified single-amplifier configuration, bipolar architecture, and 0.3 V/µs slew rate support moderate-bandwidth measurement paths where accurate amplification must precede filtering or digitization. The amplifier can be placed in a differential stage with feedback resistors chosen for the required gain, while the 8-PDIP format simplifies manual assembly and field repair. Designers should verify input common-mode range, output swing, bias current, and offset limits in the manufacturer datasheet because these numerical specifications were not included in the supplied excerpts.
Được đề xuất
Bridge and Current-Sense Amplification
OPA77GP can serve in bridge or current-sense signal chains where a small differential voltage must be amplified accurately. The verified 0.3 V/µs slew rate gives the output sufficient dynamic range for many sensing and control-loop signals, while the commercial 8-PDIP package is convenient for laboratory and industrial test equipment. In a bridge amplifier, resistor matching directly affects gain and common-mode rejection, so the amplifier's verified input limitations and the bridge excitation voltage must be checked together. Complete offset, drift, bias-current, and common-mode ratings remain datasheet-dependent and were not present in the supplied source excerpts.
Được đề xuất
Laboratory Instrumentation
OPA77GP fits laboratory instrumentation prototypes that combine precision amplification with through-hole assembly. The 8-PDIP package can be socketed for easy replacement and is straightforward to route on a perforated or manually assembled board, reducing the need for fine-pitch SMT tooling. A useful circuit role is buffered amplification of a sensor or reference node before an ADC or measurement converter. The verified 0.3 V/µs slew rate supports many low-to-moderate-frequency measurements, but engineers must confirm gain-bandwidth product, input noise, output loading, and supply limits before defining the expected accuracy and bandwidth.
Được đề xuất
Precision Active Filtering
OPA77GP is suitable for active filters and analog signal-processing blocks where component tolerances and amplifier accuracy determine the achieved response. It can implement a second-order active-filter section or a gain stage preceding a filter, with the 0.3 V/µs slew rate helping preserve waveform shape at moderate signal frequencies and amplitudes. The 8-PDIP format favors educational, prototype, and repair-oriented equipment. Before finalizing the filter, verify the closed-loop stability conditions, output-current capability, capacitive-load behavior, and exact gain-bandwidth product in the manufacturer datasheet, since these numerical limits were not supplied in the verified excerpts.
Được đề xuất
Industrial Feedback Control
OPA77GP can be used as an error amplifier in a slow precision control loop, such as a current regulator, actuator controller, or analog feedback path. Its verified bipolar architecture and 0.3 V/µs slew rate are useful when the control signal changes at a moderate rate, while the through-hole package simplifies serviceable industrial control boards. Stable operation depends on the selected feedback network, output loading, and loop compensation rather than slew rate alone. Check the complete supply range, common-mode limits, output swing, and thermal behavior against the actual control circuit before deployment, particularly for industrial temperature requirements.
Được đề xuất
Precision Buffering and Level Conditioning
OPA77GP can buffer a high-impedance source or provide level conditioning between analog stages in test and control equipment. The verified 8-PDIP configuration and 0.3 V/µs slew rate make it practical for many moderate-frequency buffering tasks, especially where a socketed, leaded device simplifies maintenance. Buffering does not eliminate the need for a correct bias network: input bias current, offset voltage, input common-mode range, and output swing must remain within their datasheet limits for the source impedance and load. The supplied evidence did not include those numeric ratings, so they should be obtained from the current manufacturer document before the circuit is approved.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho OPA77GP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | OP77 | OPA177GP | OPA277GP | OPA377GP | OPA467GP |
|---|---|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
Bảo phân biệt quan trọng
- Commercial 8-PDIP implementation (vsOPA177GP)
- Direct legacy-family replacement path (vsOP77)
- Newer precision option with quantified ratings (vsOPA177GP)
Ghi chú thiết kế
Do not treat the 8-PDIP package as proof of electrical interchangeability. Verify supply voltage, common-mode input range, output swing, offset, drift, bias current, gain-bandwidth product, and stability requirements against the manufacturer datasheet. In particular, the supplied evidence gives OPA77GP a 0.3 V/µs slew rate but does not provide its complete input or output limits.
Place the amplifier close to the feedback resistors and sensitive input nodes to minimize parasitic pickup and board-level error. Keep the ground return short, provide local supply bypassing according to the manufacturer recommendations, and avoid routing high-impedance input traces beneath noisy switching nodes. The through-hole 8-PDIP footprint is convenient for prototypes, but adequate copper and grounding remain necessary at precision signal levels.
Check output stability with the intended load, including cables, sensors, or ADC input capacitance. The verified 0.3 V/µs slew rate must not be treated as a substitute for the datasheet's gain-bandwidth and capacitive-load limits. If the load is difficult to drive, select isolation resistance or a buffer based on documented operating conditions rather than adding an arbitrary capacitor at the output.
Calculate worst-case power dissipation from the actual supply voltage, output voltage, and load current once those datasheet limits are confirmed. The supplied excerpts do not provide the OPA77GP supply range, quiescent current, or output-current limit, so a defensible thermal estimate cannot be produced. Validate the design with the manufacturer's maximum operating conditions and ensure the commercial temperature grade matches the intended environment.
Thông tin tuân thủ
The supplied excerpts identify a commercial-grade amplifier but do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to the verified commercial-grade designation unless a separate automotive-qualified ordering code is selected.
