LT1797CS5#TRMPBF - 10MHz Rail-to-Rail Op Amp | Analog Devices
MPN: LT1797CS5#TRMPBF ✓ Hoạt độngLT1797CS5#TRMPBF 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 buffering. The LT1797 belongs to the class of general-purpose op amps, which are versatile components found in a wide range of applications from consumer electronics to industrial instrumentation.
Key features of the LT1797 include a slew rate of 2.25V/μs, a gain-bandwidth product of 10MHz, and an input common-mode range that includes both rails. The input stage incorporates phase reversal protection, ensuring robust operation. The device is specified for the commercial temperature range of 0°C to 70°C, and the CS5 suffix indicates the SOT-23 package with lead-free finish.
The LT1797 uses a bipolar process technology that provides low offset voltage and low noise, making it suitable for precision applications. The rail-to-rail input and output capability allows maximum dynamic range in low-voltage single-supply designs. The low quiescent current of 1mA makes it ideal for battery-powered portable devices.
Typical applications include current sensing, portable instrumentation, battery-powered systems, and signal conditioning in industrial and automotive environments. The small TSOT-23 package saves board space, and the wide supply range allows operation from a single 3V or 5V supply or dual ±5V supplies.
When designing with the LT1797, ensure proper decoupling of the power supply pins with 0.1μF ceramic capacitors placed close to the device. The rail-to-rail input stage requires attention to common-mode voltage limits to avoid phase reversal, although the device includes internal protection.
Bộ thay thế dễ dàng lắp đặt cho LT1797CS5#TRMPBF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
LT1797CS5#TRPBF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LT1797CS5#TRM
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD8605
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
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✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MCP6281
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LT1797CS5#TRMPBF Tỷ lệ tối đa & tính chất điện
| Amplifier Type | General Purpose |
| Number of Circuits | 1 |
| Kiểu đầu ra | Rail-to-Rail |
| Slew Rate | 2.25 V/μs |
| Gain Bandwidth Product | 10 MHz |
| Current - Input Bias | 0.1 μA |
| Current - Supply | 1 mA |
| Current - Output / Channel | 25 mA |
| Voltage - Supply Span (Min) | 2.7 V |
| Voltage - Supply Span (Max) | 12 V |
| Nhiệt độ hoạt động | 0°C to 70°C |
| Hộp / Vỏ | TSOT-23-5 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân LT1797CS5#TRMPBF
| Chân 1 | OUT — Output |
| Chân 2 | V- — Negative supply |
| Chân 3 | +IN — Non-inverting input |
| Chân 4 | -IN — Inverting input |
| Chân 5 | V+ — Positive supply |
Ứng dụng tiêu biểu
LT1797CS5#TRMPBF phù hợp cho 6 Áp dụngs: Current Sensing, Portable Instrumentation, Battery-Powered Systems, Signal Conditioning, Audio Processing, Industrial Control.
Current Sensing
The LT1797CS5#TRMPBF is ideal for current sensing applications due to its rail-to-rail input common-mode range, which allows direct connection to sense resistors across the supply rails. Its 10MHz bandwidth and 2.25V/μs slew rate enable accurate amplification of fast current transients. The low 1mA quiescent current minimizes power loss in battery-powered systems. In a typical high-side current sense circuit, the op amp amplifies the voltage across a sense resistor, and the rail-to-rail input ensures accurate measurement even when the sense voltage is near the supply rail. The output can drive an ADC directly, and the small TSOT-23 package saves board space.
Được đề xuất
Portable Instrumentation
In portable instrumentation, the LT1797CS5#TRMPBF provides a balance of low power and high bandwidth. Its 1mA quiescent current extends battery life, while the 10MHz gain-bandwidth product supports signal conditioning for sensors and data acquisition. The rail-to-rail output maximizes dynamic range when interfacing with ADCs. The device operates from a single 3V or 5V supply, simplifying power design. Its small TSOT-23 package is ideal for space-constrained handheld devices. The low input bias current of 0.1μA reduces errors in high-impedance sensor interfaces, and the wide supply range accommodates various battery chemistries.
Được đề xuất
Battery-Powered Systems
The LT1797CS5#TRMPBF is well-suited for battery-powered systems due to its low 1mA quiescent current and wide supply range of 2.7V to 12V. This allows operation from a single lithium-ion cell (3.0-4.2V) or two alkaline cells (2.7-3.0V). The rail-to-rail input and output ensure maximum signal swing with limited supply headroom. The 10MHz bandwidth supports audio and sensor signal processing without excessive power consumption. In power management circuits, it can be used for battery voltage monitoring and current sensing. The small package and low power make it ideal for wearables and IoT devices.
Được đề xuất
Signal Conditioning
The LT1797CS5#TRMPBF excels in signal conditioning applications where high bandwidth and rail-to-rail operation are required. Its 10MHz gain-bandwidth product allows amplification of signals up to 1MHz with high accuracy. The low input bias current (0.1μA) minimizes errors when interfacing with high-impedance sources like photodiodes and piezoelectric sensors. The rail-to-rail output enables direct connection to ADCs without additional level shifting. The device can be configured as a buffer, amplifier, or active filter. Its low distortion and fast slew rate make it suitable for audio and data acquisition systems.
Được đề xuất
Audio Processing
The LT1797CS5#TRMPBF can be used in audio processing applications such as headphone amplifiers and active filters. Its 10MHz bandwidth and 2.25V/μs slew rate ensure transparent reproduction of audio signals. The rail-to-rail output allows maximum voltage swing into headphones or line-level outputs. The low quiescent current is beneficial for portable audio devices. The device's low distortion and noise characteristics make it suitable for high-fidelity audio paths. In a typical application, it can be used as a buffer or gain stage in a portable media player, providing clean amplification with minimal power consumption.
Được đề xuất
Industrial Control
In industrial control systems, the LT1797CS5#TRMPBF provides reliable signal conditioning for sensors and actuators. Its wide supply range (2.7V to 12V) allows operation from standard industrial rails. The rail-to-rail input and output enable interfacing with various sensor types, including current shunts and thermocouples. The 10MHz bandwidth supports fast control loops and data acquisition. The device's robustness and small package make it suitable for distributed control modules. It can be used in PLC analog input modules, motor control feedback, and process instrumentation. The low quiescent current reduces heat dissipation in densely populated boards.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LT1797CS5#TRMPBF — 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 | LT1797CS5#TRPBF | AD8605 | OPA333 |
|---|---|---|---|---|
| Package | TSOT-23-5 | TSOT-23-5 | SOT-23-5 | SOT-23-5 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 10 MHz | 350 kHz |
| Slew Rate | 2.25 V/μs | 2.25 V/μs | 5 V/μs | 0.16 V/μs |
| Quiescent Current | 1 mA | 1 mA | 1.2 mA | 17 μA |
| Input Bias Current | 0.1 μA | 0.1 μA | 0.05 pA | 70 pA |
| Supply Voltage Range | 2.7V to 12V | 2.7V to 12V | 2.7V to 5.5V | 1.8V to 5.5V |
| Output Current | 25 mA | 25 mA | 50 mA | 5 mA |
Bảo phân biệt quan trọng
- Low quiescent current of 1mA (vsAD8605)
- Wide supply range up to 12V (vsOPA333)
- Higher bandwidth of 10MHz (vsOPA333)
Ghi chú thiết kế
The LT1797CS5#TRMPBF operates from 2.7V to 12V total supply. For single-supply operation, connect V- to ground and V+ to the positive rail. For split supplies, use symmetric voltages. Ensure the supply voltage does not exceed 12V to avoid damage. Decouple each supply pin with a 0.1μF ceramic capacitor placed as close as possible to the device.
For optimal performance, place the LT1797CS5#TRMPBF on a PCB with a solid ground plane. Keep input and output traces short to minimize parasitic capacitance and inductance. Use surface-mount components and follow recommended land pattern for TSOT-23-5. Avoid routing high-speed digital traces near the input pins to reduce noise coupling.
The LT1797CS5#TRMPBF has rail-to-rail input, but the input common-mode range includes both rails. However, operation beyond the rails can cause phase reversal, though the device has internal protection. Ensure input voltages stay within the supply rails. Also, avoid driving capacitive loads greater than 100pF without a series resistor, as it may cause oscillation.
Thông tin tuân thủ
RoHS compliant per distributor listings. Not AEC-Q100 qualified. Lead-free finish indicated by 'PBF' suffix.
