ADA4817-2ACPZ-R7

The ADA4817-1 (single) and ADA4817-2 (dual) FastFET™ amplifiers are unity-gain stable, ultrahigh speed, voltage feedback amplifiers with FET inputs. These amplifiers were developed with the 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 1.3 pF of input capacitance, low noise (4 nV/√Hz), low offset voltage (2 mV maximum), and 1050 MHz -3 dB bandwidth, the ADA4817-1/ADA4817-2 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 and 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 analog-to-digital converter (ADC) driving. The ADA4817-1 is available in a 3 mm×3 mm, 8-lead LFCSP and 8-lead SOIC, and the ADA4817-2 is available in a 4 mm×4 mm, 16-lead LFCSP. These packages feature a low distortion

Applications

• Photodiode amplifiers
• Data acquisition front ends
• Instrumentation
• Filters
• ADC drivers
• Output buffers

Key features

• High speed -3 dB bandwidth (G = 1, RL = 100Ω): 1050 MHz
• Slew rate: 870 V/µs
• 0.7% settling time: 9 ns
• Input bias current: 2 pA typical
• Input capacitance:
• Common-mode capacitance: 1.3 pF typical
• Differential mode capacitance: 0.1 pF typical
• Low input noise:
• Voltage noise: 4 nV/√Hz at 100 kHz
• Current noise: 2.5 fA/√Hz at 100 kHz
• Low distortion: −90 dBc at 10 MHz (G = 1, RL = 1 kΩ)
• Linear output current: 40 mA
• Supply quiescent current per amplifier: 19 mA typical
• Powered down supply quiescent current per amplifier: 1.5 mA typical