ADA4896-2ARMZ-RL7 - Dual Low Noise RRO Op Amp | Analog Devices
料号： ADA4896-2ARMZ-RL7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.06 | $7.06 |
| 10 | $6.35 | $63.50 |
| 100 | $5.65 | $565.00 |
| 500 | $5.08 | $2,540.00 |
| 1,000 | $4.52 | $4,520.00 |
ADA4896-2ARMZ-RL7 概述
What is a voltage feedback amplifier? A voltage feedback amplifier is a type of operational amplifier where the output voltage is fed back to the inverting input through a feedback network. It is characterized by its high input impedance, low output impedance, and high open-loop gain. Voltage feedback amplifiers are widely used in signal conditioning, filtering, and buffering applications due to their ease of use and stability. They form a subset of operational amplifiers, which are fundamental building blocks in analog signal processing.
Key features of the ADA4896-2 include a low 1/f noise of 2.4 nV/√Hz at 10 Hz, a spurious-free dynamic range (SFDR) of -80 dBc at 2 MHz, and a unity-gain bandwidth of 230 MHz. The rail-to-rail output stage allows maximum output swing, and the low quiescent current makes it ideal for battery-powered systems. The amplifier also features a wide supply voltage range and is specified for operation over the industrial temperature range of -40°C to +125°C.
The ADA4896-2 uses a complementary bipolar process technology, providing excellent DC precision and AC performance. The device is designed to drive high-speed ADCs and other capacitive loads, with a slew rate of 120 V/µs. Its low distortion and low noise make it suitable for high-performance signal chains.
Typical applications include ADC drivers, active filters, instrumentation, and portable audio equipment. The low noise and high bandwidth make it ideal for medical imaging, communications, and test and measurement systems.
When designing with the ADA4896-2, ensure proper power supply decoupling with 0.1 µF capacitors close to the supply pins. The rail-to-rail output stage requires careful consideration of the load impedance to maintain stability.
直接替换替代料： ADA4896-2ARMZ-RL7 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADA4896-2ARMZ-RL7 （相同外形与封装尺寸） ——差异在于 Slew Rate, Supply Voltage Range, Quiescent Current per Amplifier, Input Bias Current, Input Voltage Noise Density.
快速对比工具——选择替代料号进行并排对比：
ADA4896-2ARMZ-R7
✅ 直接替换📋 参考替代料（不在目录中）
ADA4896-2ARMZ
✅ 直接替换✓ 有现货
$2.25 / 个
查看数据手册 →ADA4897-2ARMZ-RL
✅ 直接替换📋 参考替代料（不在目录中）
ADA4807-2ARMZ-RL7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.82 / 个
查看数据手册 →ADA4805-2ARMZ-RL7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.97 / 个
查看数据手册 →ADA4806-2ARMZ-RL7
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.85 / 个
查看数据手册 →ADA4896-2ARMZ-RL7 最大额定值与电气特性
| Number of Channels | 2 |
| Amplifier Type | Voltage Feedback |
| 输出类型 | Rail-to-Rail |
| Supply Voltage Range | 3 V to 10 V (±1.5 V to ±5 V) |
| Quiescent Current per Amplifier | 3 mA |
| 1/f Noise at 10 Hz | 2.4 nV/√Hz |
| Spurious-Free Dynamic Range (SFDR) | -80 dBc at 2 MHz |
| Unity-Gain Bandwidth | 230 MHz |
| Slew Rate | 120 V/µs |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 8-MSOP |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| REACH Status | Compliant |
| Lead-Free | Yes |
ADA4896-2ARMZ-RL7 引脚配置
| 引脚 1 | OUT A — Output of amplifier A |
| 引脚 2 | -IN A — Inverting input of amplifier A |
| 引脚 3 | +IN A — Non-inverting input of amplifier A |
| 引脚 4 | V- — Negative supply voltage |
| 引脚 5 | +IN B — Non-inverting input of amplifier B |
| 引脚 6 | -IN B — Inverting input of amplifier B |
| 引脚 7 | OUT B — Output of amplifier B |
| 引脚 8 | V+ — Positive supply voltage |
典型应用
ADA4896-2ARMZ-RL7 适用于 6 应用s: ADC Driver, Active Filter, Instrumentation, Portable Audio, Communications, Medical Imaging.
ADC Driver
The ADA4896-2ARMZ-RL7 is ideal for driving high-speed ADCs due to its low noise, high bandwidth, and rail-to-rail output. Its SFDR of -80 dBc at 2 MHz ensures minimal distortion, preserving the ADC's dynamic range. The amplifier's low quiescent current is beneficial in multi-channel systems where power dissipation is a concern. When driving capacitive loads, a series resistor may be needed to maintain stability. The wide supply range allows compatibility with various ADC supply voltages.
推荐
Active Filter
The ADA4896-2ARMZ-RL7 is well-suited for active filter applications due to its high unity-gain bandwidth of 230 MHz and low noise. It can be used in low-pass, high-pass, and band-pass filters in communication and instrumentation systems. The rail-to-rail output allows maximum signal swing, and the low quiescent current makes it efficient for battery-powered filters. The amplifier's stability at unity gain simplifies filter design, and its low distortion ensures signal fidelity.
推荐
Instrumentation
In instrumentation, the ADA4896-2ARMZ-RL7 provides low noise and high bandwidth for precise signal conditioning. Its 1/f noise of 2.4 nV/√Hz at 10 Hz is critical for low-frequency measurements, and the wide supply range supports various sensor interfaces. The dual-channel configuration is useful for differential measurements. The amplifier's low power consumption extends battery life in portable instruments, and its small MSOP package saves board space.
推荐
Portable Audio
The ADA4896-2ARMZ-RL7 is suitable for portable audio applications due to its low noise and low power consumption. It can be used in headphone amplifiers, audio codec output buffers, and active filters. The rail-to-rail output maximizes dynamic range, and the low quiescent current extends battery life. The amplifier's high bandwidth ensures accurate reproduction of audio signals, and its small package is ideal for compact devices.
推荐
Communications
In communications systems, the ADA4896-2ARMZ-RL7 is used in IF and baseband signal chains. Its high bandwidth and low distortion support high-speed data transmission, and the low noise improves signal-to-noise ratio. The amplifier can drive mixers, filters, and ADCs in transceivers. The wide supply range allows integration with various RF front-end components, and the low power consumption is advantageous in battery-operated communication devices.
推荐
Medical Imaging
The ADA4896-2ARMZ-RL7 is used in medical imaging equipment such as ultrasound and MRI systems. Its low noise and high bandwidth are essential for processing weak signals from sensors. The amplifier's low power consumption is beneficial in portable medical devices, and its small package allows high-density designs. The wide supply range supports various power architectures, and the rail-to-rail output ensures maximum signal fidelity.
推荐
推荐产品汇总
工程参考数据： ADA4896-2ARMZ-RL7 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADA4896-2ARMZ-R7 | ADA4896-2ARMZ | ADA4897-2ARMZ-RL | ADA4807-2ARMZ-RL7 |
|---|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 2 | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 3 V to 10 V | 3 V to 10 V | 3 V to 10 V | 3 V to 10 V | 2.7 V to 5 V |
| Quiescent Current per Amplifier | 3 mA | 3 mA | 3 mA | 3.5 mA | 1 mA |
| 1/f Noise at 10 Hz | 2.4 nV/√Hz | 2.4 nV/√Hz | 2.4 nV/√Hz | 1.8 nV/√Hz | 3.1 nV/√Hz |
| Unity-Gain Bandwidth | 230 MHz | 230 MHz | 230 MHz | 310 MHz | 180 MHz |
| Slew Rate | 120 V/µs | 120 V/µs | 120 V/µs | 170 V/µs | 80 V/µs |
关键差异点
- Low quiescent current of 3 mA per amplifier （对比 ADA4897-2ARMZ-RL)
- Lower 1/f noise of 2.4 nV/√Hz at 10 Hz （对比 ADA4807-2ARMZ-RL7)
- Higher unity-gain bandwidth of 230 MHz （对比 ADA4807-2ARMZ-RL7)
设计说明
The ADA4896-2ARMZ-RL7 operates from 3 V to 10 V. Ensure the supply voltage is within this range and properly decoupled. Use 0.1 µF ceramic capacitors close to the V+ and V- pins to minimize noise and improve stability. For optimal performance, a 10 µF tantalum capacitor in parallel is recommended for lower frequency decoupling.
For high-speed applications, place the ADA4896-2ARMZ-RL7 close to the signal source and ADC to minimize trace inductance. Use a ground plane to reduce noise and ensure a low-impedance return path. Keep feedback resistors and capacitors as close to the amplifier as possible to reduce parasitic capacitance and inductance.
The ADA4896-2ARMZ-RL7 is unity-gain stable, but driving large capacitive loads can cause instability. Add a series resistor (e.g., 50 Ω) between the output and the capacitive load to maintain stability. Also, avoid exceeding the absolute maximum supply voltage of 12 V to prevent damage.
合规信息
RoHS and REACH compliance confirmed from Analog Devices product page. AEC-Q100 not applicable as this is not an automotive-grade part.
