ADA4610-1ARZ - Precision JFET Op Amp, Rail-to-Rail | Analog Devices
MPN: ADA4610-1ARZ ✓ Hoạt độngADA4610-1ARZ Tóm tắt
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in analog signal conditioning, filtering, and instrumentation. The JFET input stage provides very high input impedance and low bias current, making it ideal for interfacing with high-impedance sensors and precision measurement circuits. The ADA4610-1 belongs to the precision op amp family, which prioritizes low offset, low noise, and stability over speed.
Key features include a low input voltage noise of 7.3 nV/√Hz at 1 kHz, a low input bias current of 2 pA typical, and a low offset voltage of 75 µV maximum. The rail-to-rail output stage allows maximum dynamic range in low-supply applications. The device also features a high open-loop gain of 120 dB and a unity-gain bandwidth of 16.3 MHz, balancing precision with adequate speed for many applications.
Technically, the ADA4610-1 uses a precision JFET input stage combined with a rail-to-rail output stage, achieving a high slew rate of 61 V/µs. The input common-mode range extends to the negative rail, and the output swings within 20 mV of the rails. The device is fully specified at 5 V, ±5 V, and ±15 V supplies, ensuring predictable performance across common supply rails.
Typical applications include precision instrumentation, active filters, data acquisition front-ends, and photodiode amplification. Its low noise and bias current make it suitable for high-impedance sensor interfaces, while the rail-to-rail output maximizes ADC input range. The ADA4610-1 is also used in medical instrumentation and industrial process control.
When designing with this device, pay attention to input bias current compensation and layout to minimize leakage currents. The JFET input allows high source impedances, but PCB cleanliness is critical to avoid leakage-induced offset errors. Bypass the supply pins with 0.1 µF ceramic capacitors close to the device.
Bộ thay thế dễ dàng lắp đặt cho ADA4610-1ARZ — 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 ADA4610-1ARZ (cùng hình factor và footprint) — khác nhau ở Gain Bandwidth Product, Slew Rate, Amplifier Type, Number of Channels, Current - Output / Channel.
ADA4610-1ARZ-RL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADA4610-1ARZ-R7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADA4610-2ARZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →OPA140AID
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
OPA197ID
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADA4522-1ARZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADA4610-1ARZ Tỷ lệ tối đa & tính chất điện
| Amplifier Type | JFET |
| Number of Circuits | 1 |
| Kiểu đầu ra | Rail-to-Rail |
| Slew Rate | 61 V/µs |
| Gain Bandwidth Product | 16.3 MHz |
| Current - Input Bias | 2 pA |
| Voltage - Input Offset | 75 µV (max) |
| Current - Supply | 1.7 mA |
| Current - Output / Channel | 70 mA |
| Voltage - Supply Span (Min) | 9 V |
| Voltage - Supply Span (Max) | 30 V |
| Nhiệt độ hoạt động | -40°C to +125°C |
| Hộp / Vỏ | 8-SOIC |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADA4610-1ARZ
| Chân 1 | OFFSET NULL — Offset null adjustment |
| Chân 2 | IN- — Inverting input |
| Chân 3 | IN+ — Non-inverting input |
| Chân 4 | V- — Negative supply |
| Chân 5 | OFFSET NULL — Offset null adjustment |
| Chân 6 | OUT — Output |
| Chân 7 | V+ — Positive supply |
| Chân 8 | NC — No connect |
Ứng dụng tiêu biểu
ADA4610-1ARZ phù hợp cho 6 Áp dụngs: Precision Instrumentation, Active Filters, Photodiode Amplification, Data Acquisition Systems, Medical Instrumentation, Industrial Process Control.
Precision Instrumentation
The ADA4610-1ARZ's low offset voltage (75 µV max), low input bias current (2 pA), and low noise (7.3 nV/√Hz) make it ideal for precision instrumentation amplifiers. In a typical data acquisition front-end, the op amp buffers high-impedance sensors with minimal loading and error. Its rail-to-rail output maximizes the dynamic range of the subsequent ADC, ensuring accurate measurement of small signals. The wide supply range allows operation from ±5 V to ±15 V, accommodating various system rails. For best performance, use a guard ring around the input pins to reduce leakage currents.
Được đề xuất
Active Filters
The ADA4610-1ARZ is well-suited for active filter designs due to its 16.3 MHz gain-bandwidth product and 61 V/µs slew rate. In a 4th-order low-pass filter for anti-aliasing, the op amp provides sufficient loop gain to maintain accuracy up to 1 MHz. The low input bias current minimizes DC offset errors in high-impedance filter networks. The rail-to-rail output allows the filter to drive ADC inputs without clipping. For optimal performance, use precision resistors with 1% tolerance or better and place the filter components close to the op amp to minimize parasitic capacitance.
Được đề xuất
Photodiode Amplification
The ADA4610-1ARZ's ultra-low input bias current of 2 pA is essential for transimpedance amplifiers used with photodiodes. In a photodiode circuit, the op amp converts the small photocurrent into a voltage with high accuracy. The low voltage noise ensures a good signal-to-noise ratio even for weak optical signals. The JFET input stage presents a high impedance to the photodiode, minimizing loading. For best performance, use a T-network feedback to reduce noise and place a small capacitor in parallel with the feedback resistor to stabilize the circuit.
Được đề xuất
Data Acquisition Systems
In data acquisition systems, the ADA4610-1ARZ serves as a precision buffer or gain stage before the ADC. Its low offset and drift ensure accurate DC measurements, while the rail-to-rail output allows full-scale use of the ADC input range. The wide bandwidth supports sampling rates up to several MSPS. The device's low power consumption (1.7 mA) is beneficial in multi-channel systems. For high-resolution ADCs, pair the op amp with a low-pass filter to reduce out-of-band noise.
Được đề xuất
Medical Instrumentation
The ADA4610-1ARZ is suitable for medical instrumentation such as ECG and EEG amplifiers due to its low noise and high input impedance. In an ECG front-end, the op amp amplifies the small biopotential signals while rejecting common-mode interference. The low bias current minimizes electrode offset errors. The rail-to-rail output allows the signal to be digitized by an ADC with maximum resolution. The device's extended temperature range (-40°C to +125°C) ensures reliable operation in medical devices. For safety, use proper isolation and filtering.
Được đề xuất
Industrial Process Control
In industrial process control, the ADA4610-1ARZ is used in signal conditioning for sensors like thermocouples and RTDs. Its low offset voltage and drift ensure accurate temperature measurement. The wide supply range allows operation from 24 V industrial rails. The rail-to-rail output enables direct interface to PLC analog input modules. The device's robustness over -40°C to +125°C makes it suitable for harsh environments. For best performance, use shielded cables and proper grounding to minimize noise.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADA4610-1ARZ — 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 | ADA4610-1ARZ-RL | OPA140AID | OPA197ID |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments |
| Input Bias Current | 2 pA | 2 pA | 10 pA | 5 pA |
| Input Voltage Noise | 7.3 nV/√Hz | 7.3 nV/√Hz | 5.5 nV/√Hz | 5.5 nV/√Hz |
| Gain Bandwidth Product | 16.3 MHz | 16.3 MHz | 11 MHz | 10 MHz |
| Slew Rate | 61 V/µs | 61 V/µs | 20 V/µs | 20 V/µs |
| Supply Current | 1.7 mA | 1.7 mA | 1.8 mA | 1 mA |
| Offset Voltage | 75 µV max | 75 µV max | 30 µV max | 25 µV max |
Bảo phân biệt quan trọng
- Lower input bias current than OPA140 (vsOPA140AID)
- Higher slew rate than OPA197 (vsOPA197ID)
- Wider supply range than OPA197 (vsOPA197ID)
Ghi chú thiết kế
For optimal performance, place a 0.1 µF ceramic capacitor close to each supply pin (V+ and V-) to decouple high-frequency noise. Use a 10 µF tantalum capacitor in parallel for lower frequency decoupling. Ensure the ground plane is solid and the input traces are shielded to minimize noise pickup.
The JFET input has extremely low bias current, but PCB leakage can degrade performance. Use a guard ring around the input pins (pins 2 and 3) connected to a low-impedance node at the same potential to divert leakage currents. Clean the board thoroughly to remove flux residues that can cause leakage.
The ADA4610-1ARZ dissipates minimal power (typically 1.7 mA supply current), so thermal issues are unlikely. However, in high-temperature environments, ensure the junction temperature stays below 150°C. The 8-SOIC package has a thermal resistance of approximately 158°C/W, so at 25°C ambient, the junction temperature rise is negligible.
Thông tin tuân thủ
EU RoHS compliant and REACH compliant per Abacus Technologies. Conflict minerals status undeterminable.
