ADA4807-1AKSZ-RL7 - 180MHz, 3.1nV/√Hz RRIO Op Amp | Analog Devices
MPN： ADA4807-1AKSZ-RL7 ✓ 啟用中ADA4807-1AKSZ-RL7 概覽
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 signal conditioning, used to amplify, filter, or buffer signals. The ADA4807-1 belongs to the family of voltage feedback amplifiers, which are characterized by their ease of use, stable operation, and wide bandwidth. Within the hierarchy of analog ICs, it sits under linear amplifiers, which are essential in precision measurement, audio, and communication systems.
Key features include an input voltage noise density of 3.1 nV/√Hz and current noise of 0.7 pA/√Hz, which are among the lowest for high-speed RRIO amplifiers. The rail-to-rail input and output capability allows maximum dynamic range on low supply voltages, and the amplifier operates from a single 2.7 V to 5 V supply or dual ±1.35 V to ±2.5 V supplies. The disable pin (available on the SC-70-6 package) places the output in a high-impedance state, reducing quiescent current to near zero for power saving.
Technically, the ADA4807-1 uses a complementary bipolar process that achieves low distortion and high slew rate (225 V/µs) while maintaining low power. The amplifier is unity-gain stable and provides a phase margin of 60°, ensuring reliable operation in buffer configurations. Its output can swing within 50 mV of the rails, and the input common-mode range extends beyond the supplies, simplifying single-supply designs.
Typical applications include portable instrumentation, battery-powered audio, active filters, ADC drivers, and photodiode amplification. The low noise and high bandwidth make it suitable for medical devices, industrial sensors, and communication receivers where signal integrity is critical.
When designing with this amplifier, ensure proper decoupling of the supply pins with 0.1 µF ceramic capacitors placed close to the device. The disable pin should be tied to the positive supply if not used, to avoid accidental shutdown. For optimal noise performance, use metal-film resistors in the feedback network and keep the feedback loop short to minimize parasitic capacitance.
直接替換替代品，適用於 ADA4807-1AKSZ-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： ADA4807-1AKSZ-RL7 （相同外形與佔位） — 差異在於 Package / Case, Voltage - Supply Span (Max), Amplifier Type, Current - Supply, Gain Bandwidth Product.
ADA4807-1AKSZ-R7
✅ 直接替換📋 參考替代品（不在目錄中）
ADA4807-1AKSZ-R2
✅ 直接替換📋 參考替代品（不在目錄中）
ADA4805-1AKSZ-RL7
✅ 直接替換聯絡詢價
查看資料表 →ADA4805-1AKSZ
✅ 直接替換聯絡詢價
查看資料表 →OPA836
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LMH6643
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADA4807-1AKSZ-RL7 最大額定值與電氣特性
| Amplifier Type | Voltage Feedback |
| Number of Circuits | 1 |
| 輸出類型 | Rail-to-Rail |
| Slew Rate | 225 V/µs |
| Gain Bandwidth Product | 180 MHz |
| -3dB Bandwidth | 180 MHz |
| Current - Input Bias | 0.7 pA/√Hz (noise current density) |
| Voltage - Input Offset | 50 µV (typical) |
| Current - Supply | 1 mA |
| Current - Output / Channel | 60 mA |
| Voltage - Supply Span (Min) | 2.7 V |
| Voltage - Supply Span (Max) | 5 V |
| 工作溫度 | -40°C to +125°C |
| 封裝 / 外殼 | 6-TSSOP, SC-88, SOT-363 |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
ADA4807-1AKSZ-RL7 腳位配置
| 腳位 1 | OUT — Amplifier output |
| 腳位 2 | GND — Ground (negative supply) |
| 腳位 3 | IN+ — Non-inverting input |
| 腳位 4 | IN- — Inverting input |
| 腳位 5 | V+ — Positive supply |
| 腳位 6 | DIS — Disable (active low) |
典型應用
ADA4807-1AKSZ-RL7 適用於 6 應用s: Portable Instrumentation, Battery-Powered Audio, Active Filters, ADC Driver, Photodiode Amplifier, Industrial Sensor Interface.
Portable Instrumentation
The ADA4807-1AKSZ-RL7's low power (1 mA) and low noise (3.1 nV/√Hz) make it ideal for battery-powered multimeters, data loggers, and handheld test equipment. Its rail-to-rail output maximizes dynamic range on 3.3 V supplies, and the small SC-70 package saves board space. The high bandwidth (180 MHz) ensures accurate amplification of fast transient signals, while the disable pin allows power saving between measurements.
推薦
Battery-Powered Audio
With a quiescent current of only 1 mA and a supply range down to 2.7 V, the ADA4807-1AKSZ-RL7 is well-suited for portable audio devices such as MP3 players, smartphones, and hearing aids. Its low noise (3.1 nV/√Hz) ensures a clean audio signal, and the rail-to-rail output allows maximum headroom on low voltages. The 180 MHz bandwidth supports high-quality audio processing without slew-rate limiting.
推薦
Active Filters
The ADA4807-1AKSZ-RL7's high gain bandwidth product (180 MHz) and low distortion make it an excellent choice for active filters in communication and instrumentation systems. It can implement Butterworth, Chebyshev, or Bessel filters with cutoff frequencies up to tens of MHz. The rail-to-rail input/output allows full-scale signal processing on low supplies, and the low noise ensures high signal-to-noise ratio in the passband.
推薦
ADC Driver
The ADA4807-1AKSZ-RL7 can drive high-speed ADCs with its 60 mA output current and 180 MHz bandwidth. Its low noise and low distortion preserve signal integrity, while the rail-to-rail output maximizes the ADC's dynamic range. The disable pin allows power saving when the ADC is idle. It is suitable for driving 12-bit ADCs with sampling rates up to 100 MSPS.
推薦
Photodiode Amplifier
The ADA4807-1AKSZ-RL7's low current noise (0.7 pA/√Hz) and low voltage noise (3.1 nV/√Hz) make it ideal for transimpedance amplifiers used in optical sensors, LIDAR, and medical diagnostics. The high bandwidth (180 MHz) allows fast pulse detection, and the low input bias current minimizes DC offset. The rail-to-rail output provides wide dynamic range for varying light levels.
推薦
Industrial Sensor Interface
In industrial environments, the ADA4807-1AKSZ-RL7 can condition signals from temperature, pressure, and strain sensors. Its wide operating temperature range (-40°C to +125°C) and low power make it suitable for remote sensors. The rail-to-rail input allows direct interface with sensors that output near the supply rails, and the high bandwidth supports fast data acquisition.
推薦
推薦產品摘要
工程參考資料，適用於 ADA4807-1AKSZ-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 | ADA4807-1AKSZ-R7 | ADA4805-1AKSZ-RL7 | OPA836 |
|---|---|---|---|---|
| Package | SC-70-6 | SC-70-6 | SC-70-6 | SC-70-6 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Gain Bandwidth Product | 180 MHz | 180 MHz | 105 MHz | 205 MHz |
| Input Voltage Noise | 3.1 nV/√Hz | 3.1 nV/√Hz | 4.6 nV/√Hz | 4.6 nV/√Hz |
| Quiescent Current | 1 mA | 1 mA | 0.6 mA | 1 mA |
| Slew Rate | 225 V/µs | 225 V/µs | 120 V/µs | 260 V/µs |
| Supply Voltage Range | 2.7 V to 5 V | 2.7 V to 5 V | 2.7 V to 5 V | 2.5 V to 5.5 V |
| Disable Pin | Yes | Yes | Yes | No |
主要差異化特點
- Lowest noise among high-speed RRIO amplifiers (對比OPA836)
- Integrated disable pin for power saving (對比OPA836)
- Lower quiescent current than comparable parts (對比LMH6643)
設計說明
The ADA4807-1AKSZ-RL7 operates from 2.7 V to 5 V single supply. Use a 0.1 µF ceramic capacitor close to the V+ pin and a 10 µF bulk capacitor for low-frequency decoupling. For dual-supply operation, ensure both supplies are symmetrical and decoupled similarly.
For optimal noise performance, keep the feedback network components close to the amplifier and use a ground plane. Avoid routing high-speed digital traces near the input pins. The SC-70 package has a thermal pad; solder it to the PCB for improved heat dissipation.
The disable pin is active low. If unused, tie it to V+ to prevent accidental shutdown. Do not exceed the absolute maximum supply voltage of 6 V. Also, ensure the input common-mode voltage does not exceed the rails by more than 0.3 V to avoid latch-up.
合規資訊
RoHS and REACH compliant per distributor data. Not AEC-Q100 qualified.
