ADA4817-2ACPZ-R2: 运算放大器LFCSP-16封装
ADA4817-1（单通道）与ADA4817-2（双通道）FastFET™放大器是单位增益稳定、超高速电压反馈型放大器,具有FET输入。这些放大器采用ADI公司专有的超高速互补双极型（XFCB）工艺进行开发,这一工艺可使放大器实现超低的噪声（4 nV/√Hz；2.5 fA/√Hz）及极高的输入阻抗。
ADA4817-1/ADA4871-2具有1.5 pF的输入电容、4 nV/√Hz的低噪声、最大2 mV的低失调电压,以及1050 MHz的−3 dB带宽,非常适合数据采集前端及宽带跨导应用,如光电二极管前置放大器。
ADA4817-1/ ADA4817-2具有5 V至10 V的宽电压范围,可采用单电源或双电源供电,适合多种应用,包括有源滤波和ADC驱动。
ADA4817-1采用3 mm × 3 mm 8引脚LFCSP封装,ADA4817-2采用4 mm × 4 mm 16引脚 LFSCP封装。这两种封装都采用低失真引脚排列,可以改善二次谐波失真,并简化印制电路板布局。此外,这两种封装都具有裸露焊盘,提供至印制电路板（PCB）的低热阻路径,可实现更有效的热传输,并提高稳定性。这两款产品均可在−40°C至+105°C的扩展工业温度范围内工作。
The ADA4817-1 (single) and ADA4817-2 (dual) FastFET™ amplifiers are unity-gain stable, ultrahigh speed voltage feedback amplifiers with FET inputs. These amplifiers are developed in the Analog Devices, Inc., proprietary eXtra Fast Complementary Bipolar (XFCB) process, which allows the amplifiers to achieve ultralow noise (4 nV/√Hz; 2.5 fA/√Hz) as well as very high input impedances.
With 1.5 pF of input capacitance, low noise (4 nV/√Hz), low offset voltage (2 mV maximum), and 1050 MHz −3 dB bandwidth, the ADA4817-1/ADA4871-2 are ideal for data acquisition front ends as well as wideband transimpedance applications, such as photodiode preamps.
With a wide supply voltage range from 5 V to 10 V, the ability to operate on either single or dual supplies, the ADA4817-1/ ADA4817-2 are designed to work in a variety of applications including active filtering and ADC driving.
The ADA4817-1 is available in a 3 mm × 3 mm 8-lead LFCSP and the ADA4817-2 is available in a 4 mm × 4 mm 16-lead LFSCP. Both packages feature a low distortion pinout, which improves second harmonic distortion and simplifies the layout of the circuit board. In addition, both packages feature an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This enables more efficient heat transfer and increases reliability. Both products are rated to work over the extended industrial temperature range (−40°C to +105°C).
产品应用领域 Applications
- 光电二极管放大器
- 数据采集前端
- 仪器仪表
- 滤波器
- ADC驱动器
- CCD输出缓冲器
- Photodiode amplifiers
- Data acquisition front ends
- Instrumentation
- Filters
- ADC drivers
- CCD output buffers
ADA4817-2ACPZ-R2 特点
- 高速
−3 dB带宽（G=1,RL=100Ω）：1050 MHz
压摆率：870 V/µs
建立时间：9 ns至0.1% - 低输入偏置电流：2 pA
- 低输入电容
共模电容：1.5 pF
差模电容：0.1 pF - 低噪声
4 nV/√Hz @ 100 kHz
2.5 fA/√Hz @ 100 kHz - 低失真 −90 dBc @ 10 MHz（G=1, RL=1 kΩ）
- 失调电压：最大2 mV
- 高输出电流：70 mA
- 每个放大器的电源电流：19 mA
- 关断情况下每个放大器的电源电流：1 mA
- High speed
−3 dB bandwidth (G=1, RL=100Ω): 1050 MHz
Slew rate: 870 V/μs
0.1% settling time: 9 ns - Low input bias current: 2 pA
- Low input capacitance
Common-mode capacitance: 1.3 pF
Differential-mode capacitance: 0.1 pF - Low noise
4 nV/√Hz @ 100 kHz
2.5 fA/√Hz @ 100 kHz - Low distortion −90 dBc @ 10 MHz (G=1, RL=1 kΩ)
- Offset voltage: 2 mV maximum
- High output current: 40 mA
- Supply current per amplifier: 19 mA
- Power-down supply current per amp: 1.5 mA
ADA4817-2ACPZ-R2 功能框图
ADA4817-2ACPZ-R2 技术指标
| -3dB Bandwidth | 1.05GHz | Vcc-Vee Supply (V) | 5 to 10 |
| Slew Rate | 870V/µs | Iq per Amplifier | 21mA |
| Vos | 400µV | # OpAmps per Pkg | 2 |
| Ib | 2pA | Operating Temp Range | -40 to +105 |
| Input Noise (nV/rtHz) | 4nV/rtHz | Packages | CSP |
ADA4817-2 订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| ADA4817-2ACPZ-R2 | 量产 | 16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad) | 16 | 工业 |
| ADA4817-2ACPZ-R7 | 量产 | 16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad) | 16 | 工业 |
| ADA4817-2ACPZ-RL | 量产 | 16 ld LFCSP (4x4x.85mm, 2.10mm exposed pad) | 16 | 工业 |
