GENERAL DESCRIPTION
●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 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 1.3 pF of input capacitance, low noise (4 nV/√Hz), low offset voltage (2 mV maximum), and 1050 MHz −3 dB band width, the ADA4817-1/ADA4871-2 are ideal for data acquisition front ends as well as wideband transimpedance applications, such as photodiode preamps.
●FEATURES
●High speed
●−3 dB bandwidth (G = 1, RL = 100 Ω): 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 amplifier: 1.5 mA
●APPLICATIONS
●Photodiode amplifiers
●Data acquisition front ends
●Instrumentation
●Filters
●ADC drivers
●CCD output buffers
