ADA4807-2ARMZ-RL7 - 180MHz Rail-to-Rail Op Amp | Analog Devices
MPN： ADA4807-2ARMZ-RL7 ✓ 啟用中ADA4807-2ARMZ-RL7 概覽
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used to condition signals in analog circuits. The ADA4807-2 is a voltage feedback amplifier, a type of op amp where the output voltage is proportional to the differential input voltage, offering high bandwidth and low distortion. It belongs to the family of rail-to-rail amplifiers, which can swing its output close to the supply rails, maximizing dynamic range in low-voltage systems. This device is part of the broader category of linear amplifiers, which are fundamental building blocks in signal processing chains.
Key features include an ultra-low input voltage noise of 3.1 nV/√Hz and current noise of 0.7 pA/√Hz, making it one of the lowest-noise high-speed rail-to-rail amplifiers available. The rail-to-rail input and output capability allows full-scale signal swing, while the disable pin (active low) reduces quiescent current to a high-impedance state for power saving. The amplifier also features a wide supply range, making it versatile for both single and dual supply operation.
Technically, the ADA4807-2 uses a bipolar process and a complementary input stage to achieve rail-to-rail operation. The device is designed for high-speed signal conditioning, with a gain bandwidth product of 180 MHz and a slew rate of 225 V/µs, enabling it to handle fast transients. The low noise and high speed make it suitable for driving high-resolution ADCs, active filters, and video applications. The output can drive capacitive loads up to 100 pF without oscillation, and the device is specified over the extended industrial temperature range of -40°C to +125°C.
Typical applications include high-resolution data acquisition systems, battery-powered instrumentation, active filters, and ADC drivers. In data acquisition, the low noise and high bandwidth ensure accurate signal capture, while in battery-powered devices, the low quiescent current extends battery life. The rail-to-rail output maximizes the dynamic range of the ADC input, improving overall system performance.
When designing with this device, ensure proper power supply decoupling with 0.1 µF capacitors close to the supply pins. The disable pin can be used for power sequencing, but must be driven to a logic low to enable the amplifier. For optimal noise performance, use low-value resistors in the feedback network to minimize thermal noise.
直接替換替代品，適用於 ADA4807-2ARMZ-RL7 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADA4807-2ARMZ-RL7 （相同外形與佔位） — 差異在於 Slew Rate.
ADA4807-2ARMZ
✅ 直接替換聯絡詢價
查看資料表 →ADA4807-2ARMZ-R7
✅ 直接替換📋 參考替代品（不在目錄中）
OPA2695
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADA4897-2ARMZ-RL
✅ 直接替換📋 參考替代品（不在目錄中）
ADA4807-2ARMZ-RL7 最大額定值與電氣特性
| Amplifier Type | Voltage Feedback |
| Number of Circuits | 2 |
| 輸出類型 | Rail-to-Rail |
| Slew Rate | 225 V/µs |
| Gain Bandwidth Product | 180 MHz |
| Input Voltage Noise Density | 3.1 nV/√Hz |
| Input Current Noise Density | 0.7 pA/√Hz |
| Supply Voltage - Single | 2.7 V to 11 V |
| Supply Voltage - Dual | ±1.35 V to ±5.5 V |
| Quiescent Current (per amp) | 1 mA |
| Input Offset Voltage | 750 µV max |
| Input Bias Current | 1.8 µA |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 8-MSOP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
ADA4807-2ARMZ-RL7 腳位配置
| 腳位 1 | OUT A — Output of amplifier A |
| 腳位 2 | -IN A — Inverting input of amplifier A |
| 腳位 3 | +IN A — Non-inverting input of amplifier A |
| 腳位 4 | V- — Negative supply or ground |
| 腳位 5 | +IN B — Non-inverting input of amplifier B |
| 腳位 6 | -IN B — Inverting input of amplifier B |
| 腳位 7 | OUT B — Output of amplifier B |
| 腳位 8 | V+ — Positive supply |
典型應用
ADA4807-2ARMZ-RL7 適用於 6 應用s: High-Resolution Data Acquisition, Battery-Powered Instrumentation, Active Filters, ADC Driver, Video Amplification, Portable Audio.
High-Resolution Data Acquisition
The ADA4807-2ARMZ-RL7's low noise (3.1 nV/√Hz) and high bandwidth (180 MHz) make it ideal for driving high-resolution ADCs in data acquisition systems. Its rail-to-rail output maximizes the ADC's dynamic range, while the low quiescent current (1 mA) is beneficial for multi-channel systems. The amplifier can be used as a buffer or gain stage before the ADC, ensuring signal integrity. Its wide supply range (2.7V to 11V) accommodates various system rails. The low distortion and fast settling time preserve the accuracy of the acquired signal, making it suitable for precision measurement equipment.
推薦
Battery-Powered Instrumentation
The ADA4807-2ARMZ-RL7 is well-suited for battery-powered instruments due to its low quiescent current of 1 mA per amplifier and wide supply range down to 2.7V. The rail-to-rail input and output allow full signal swing even at low supply voltages, maximizing battery life. Its low noise ensures accurate measurements in portable medical devices, handheld multimeters, and field transmitters. The disable pin can be used to power down the amplifier when not in use, further conserving energy. The small 8-MSOP package saves board space in compact designs.
推薦
Active Filters
The ADA4807-2ARMZ-RL7's 180 MHz bandwidth and 225 V/µs slew rate make it suitable for active filters in communication and video systems. Its low noise and distortion preserve signal quality in filters with high Q factors. The rail-to-rail output allows maximum signal swing, which is important in filters operating from low supply voltages. The device can be used in multiple feedback or Sallen-Key topologies. Its low power consumption is advantageous in multi-stage filters. The wide supply range provides flexibility in system design.
推薦
ADC Driver
The ADA4807-2ARMZ-RL7 is an excellent ADC driver due to its low noise, high bandwidth, and rail-to-rail output. It can drive high-resolution ADCs with minimal signal degradation. The low output impedance and high slew rate ensure fast settling, which is critical for high-speed sampling. The device can be configured as a single-ended to differential converter or as a buffer. Its low power consumption is beneficial in multi-channel ADC systems. The wide supply range allows it to interface with various ADC supply voltages.
推薦
Video Amplification
The ADA4807-2ARMZ-RL7's 180 MHz bandwidth and 225 V/µs slew rate make it suitable for video amplification in CCTV, broadcast, and consumer video equipment. Its rail-to-rail output allows full video signal swing, and its low differential gain and phase errors preserve image quality. The low power consumption is beneficial in portable video devices. The device can be used as a buffer or gain stage for composite video, component video, or VGA signals. Its small package is ideal for space-constrained designs.
推薦
Portable Audio
The ADA4807-2ARMZ-RL7 can be used in portable audio devices as a headphone driver or line driver. Its low noise (3.1 nV/√Hz) ensures a clean audio signal, and its rail-to-rail output maximizes the dynamic range. The low quiescent current (1 mA) extends battery life in portable players. The device can drive capacitive loads up to 100 pF without oscillation, making it suitable for driving cables. Its small package is ideal for compact designs.
推薦
推薦產品摘要
工程參考資料，適用於 ADA4807-2ARMZ-RL7 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADA4807-2ARMZ | ADA4807-2ARMZ-R7 | OPA2695 | ADA4897-2ARMZ-RL |
|---|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Number of Channels | 2 | 2 | 2 | 2 | 2 |
| Bandwidth | 180 MHz | 180 MHz | 180 MHz | 500 MHz | 230 MHz |
| Slew Rate | 225 V/µs | 225 V/µs | 225 V/µs | 2900 V/µs | 120 V/µs |
| Input Voltage Noise | 3.1 nV/√Hz | 3.1 nV/√Hz | 3.1 nV/√Hz | 1.8 nV/√Hz | 1 nV/√Hz |
| Quiescent Current (per amp) | 1 mA | 1 mA | 1 mA | 12.9 mA | 3 mA |
| Supply Voltage Range | 2.7V to 11V | 2.7V to 11V | 2.7V to 11V | ±2.5V to ±6V | 3V to 10V |
主要差異化特點
- Lowest noise among high-speed rail-to-rail amplifiers (對比ADA4897-2ARMZ-RL)
- Lower power consumption (對比OPA2695)
- Wide supply voltage range (對比ADA4897-2ARMZ-RL)
設計說明
Ensure proper power supply decoupling by placing 0.1 µF ceramic capacitors as close as possible to the V+ and V- pins. For best performance, use a 10 µF tantalum capacitor in parallel for low-frequency decoupling. The ADA4807-2ARMZ-RL7 operates from 2.7V to 11V single supply or ±1.35V to ±5.5V dual supply. Verify that the supply voltage does not exceed the absolute maximum ratings to prevent damage.
For optimal noise performance, use a solid ground plane and minimize trace lengths to the inputs and outputs. Keep feedback resistors low in value (e.g., 1 kΩ or less) to reduce thermal noise. The ADA4807-2ARMZ-RL7 is a high-speed amplifier, so follow high-speed layout practices: use surface-mount components, avoid vias in the signal path, and maintain controlled impedance for critical traces.
The disable pin (active low) must be tied to a logic low to enable the amplifier. If left floating, the amplifier may be disabled. When driving capacitive loads, the ADA4807-2ARMZ-RL7 can oscillate if the load exceeds 100 pF. Use a series resistor (e.g., 50 Ω) at the output to isolate capacitive loads. Also, avoid exceeding the input common-mode voltage range, which is rail-to-rail, but the inputs should not be driven beyond the supplies by more than 0.3V.
合規資訊
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free finish.
