OP177BRC/883 - Ultraprecision Op Amp | Analog Devices
MPN: OP177BRC/883 ✗ Cuối đờiOP177BRC/883 Tóm tắt
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block in analog electronics, used in signal conditioning, filtering, and instrumentation. The OP177 belongs to the precision op amp category, which prioritizes low offset voltage, low drift, and high open-loop gain over speed. This makes it ideal for applications where accuracy is paramount, such as precision instrumentation and sensor signal conditioning.
Key features of the OP177BRC/883 include ultralow offset voltage (10 µV max for the B grade), outstanding offset voltage drift (0.1 µV/°C max), excellent open-loop gain and gain linearity, CMRR of 130 dB min, PSRR of 120 dB min, and low supply current of 2.0 mA max. These specifications ensure accurate performance in high closed-loop gain applications, making it a cost-effective alternative to chopper-stabilized amplifiers.
The OP177 uses a bipolar input stage with laser-trimmed thin-film resistors to achieve its precision. The device operates from dual supplies ranging from ±3 V to ±18 V, and its output can swing close to the supply rails. The low noise and high gain make it suitable for precision integrators, active filters, and bridge amplifiers.
Typical applications include precision instrumentation, thermocouple and RTD signal conditioning, strain gauge amplifiers, and high-resolution ADC drivers. The device's low offset and drift eliminate the need for external nulling in many circuits, simplifying design and improving long-term stability.
When designing with the OP177BRC/883, ensure proper decoupling of the power supply pins with 0.1 µF ceramic capacitors placed close to the device. The ceramic package provides good thermal performance, but for high-precision applications, maintain a stable ambient temperature to minimize drift.
Bộ thay thế dễ dàng lắp đặt cho OP177BRC/883 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với OP177BRC/883 (cùng hình factor và footprint) — khác nhau ở Package, Input Offset Voltage, Input Offset Voltage Drift.
OP177BRC/883
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Xem tài liệu →OP177BRC/883 Tỷ lệ tối đa & tính chất điện
| Input Offset Voltage (max) | 55 µV |
| Offset Voltage Drift (max) | 0.1 µV/°C |
| Common Mode Rejection Ratio (min) | 130 dB |
| Power Supply Rejection Ratio (min) | 120 dB |
| Supply Current (max) | 2.0 mA |
| Unity Gain Bandwidth (nominal) | 600 kHz |
| Slew Rate (min) | 0.1 V/µs |
| Open-Loop Gain (typ) | V/µV |
| Supply Voltage Range | ±3 V to ±18 V |
| Hộp | LCC-20 (CQCC20) |
| Khoảng nhiệt độ hoạt động | -55°C to +125°C |
| Trạng thái RoHS | unknown |
| Military Grade | Yes (883 compliant) |
Cấu hình chân OP177BRC/883
| Chân 1 | NC — No connection |
| Chân 2 | -IN — Inverting input |
| Chân 3 | +IN — Non-inverting input |
| Chân 4 | V- — Negative supply |
| Chân 5 | NC — No connection |
| Chân 6 | NC — No connection |
| Chân 7 | V+ — Positive supply |
| Chân 8 | OUT — Output |
| Chân 9 | NC — No connection |
| Chân 10 | NC — No connection |
Ứng dụng tiêu biểu
OP177BRC/883 phù hợp cho 6 Áp dụngs: Precision Instrumentation, Military and Aerospace, Medical Instrumentation, Industrial Process Control, Test and Measurement, Audio Signal Conditioning.
Precision Instrumentation
The OP177BRC/883's ultralow offset voltage (55 µV max) and drift (0.1 µV/°C) make it ideal for precision instrumentation amplifiers. In a typical bridge amplifier, the low offset ensures minimal error, while the high CMRR (130 dB) rejects common-mode noise. The device operates from ±15 V supplies, providing sufficient headroom for sensor outputs. Its low supply current (2.0 mA) is beneficial for portable instruments. The 600 kHz bandwidth is adequate for DC and low-frequency measurements, ensuring stable readings.
Được đề xuất
Military and Aerospace
The OP177BRC/883 is a military-grade (883 compliant) op amp in a hermetic ceramic LCC-20 package, operating from -55°C to +125°C. This makes it suitable for avionics, guidance systems, and radar signal conditioning. The high PSRR (120 dB) ensures stable operation in noisy power environments. The low drift over temperature maintains accuracy in extreme conditions. Its small footprint is advantageous for space-constrained military electronics.
Được đề xuất
Medical Instrumentation
In medical devices such as patient monitors and diagnostic equipment, the OP177BRC/883 provides the precision needed for accurate signal conditioning. Its low offset voltage and drift ensure reliable measurements over time and temperature. The low supply current is ideal for battery-powered portable devices. The high CMRR rejects interference from other medical equipment. The 600 kHz bandwidth is sufficient for biopotential signals like ECG and EEG.
Được đề xuất
Industrial Process Control
The OP177BRC/883 is well-suited for industrial process control, where precision and stability are critical. It can be used in 4-20 mA loop transmitters, PID controllers, and signal conditioning for pressure and temperature sensors. The low offset voltage minimizes calibration requirements, and the high PSRR ensures accurate operation in industrial power environments. The wide temperature range allows deployment in harsh factory conditions.
Được đề xuất
Test and Measurement
In test and measurement equipment, the OP177BRC/883 provides the accuracy required for calibration and signal analysis. Its low offset and drift ensure precise DC measurements, while the high open-loop gain maintains linearity in high-gain configurations. The device can be used in digital multimeters, precision voltage references, and bridge measurements. The 600 kHz bandwidth is adequate for audio-frequency test signals.
Được đề xuất
Audio Signal Conditioning
Although not a high-speed op amp, the OP177BRC/883 can be used in high-end audio equipment for precise DC servo control and signal conditioning. Its low noise and low distortion contribute to clean audio reproduction. The low offset voltage prevents DC offset in audio paths, and the high PSRR reduces power supply hum. The 600 kHz bandwidth is sufficient for audio frequencies up to 20 kHz.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho OP177BRC/883 — 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 | OP177GPZ | OP177FSZ | OP07CN8 |
|---|---|---|---|---|
| Package | LCC-20 | DIP-8 | SOIC-8 | DIP-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Offset Voltage (max) | 55 µV | 25 µV | 25 µV | 75 µV |
| Offset Voltage Drift (max) | 0.1 µV/°C | 0.3 µV/°C | 0.3 µV/°C | 0.2 µV/°C |
| CMRR (min) | 130 dB | 130 dB | 130 dB | 110 dB |
| PSRR (min) | 120 dB | 120 dB | 120 dB | 110 dB |
| Supply Current (max) | 2.0 mA | 2.0 mA | 2.0 mA | 2.5 mA |
| Unity Gain Bandwidth | 600 kHz | 600 kHz | 600 kHz | 600 kHz |
Bảo phân biệt quan trọng
- Ultralow offset voltage drift of 0.1 µV/°C (vsOP07CN8)
- High CMRR of 130 dB (vsOP07CN8)
- Military-grade 883 compliance (vsOP177GPZ)
Ghi chú thiết kế
Use dual supplies of ±15 V for optimal performance. Decouple each supply pin with a 0.1 µF ceramic capacitor placed as close to the device as possible. For high-precision applications, consider using a low-noise linear regulator to power the op amp.
For the LCC-20 package, ensure proper soldering to the ceramic substrate. Use a thermal pad if available. Keep traces short to minimize parasitic capacitance. For high-impedance inputs, guard rings can reduce leakage currents.
Avoid exceeding the absolute maximum supply voltage of ±18 V. The OP177 is not a rail-to-rail output, so ensure the output swing is within the specified range. For high closed-loop gain, the low bandwidth may limit performance; verify stability with the chosen gain.
Thông tin tuân thủ
Military-grade ceramic package may be exempt from RoHS. Compliance data not provided in verified sources.
