ADA4817-1 Op Amp IC Chip

ADA4817-1(Low Noise, 1 GHz,FastFET Op Amps)

Introduction

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 bandwidth, the ADA4817-1/ADA4871-2 are ideal for data acquisition front ends as well as wideband transimpedance applications,such as photodiode preamps.

The ADA4817-1 is available in a 3 mm x 3 mm, 8-lead LFCSP and 8-1ead SOIC, and the ADA4817-2 is available in a 4 mm x 4 mm,16-1ead LFCSP. These packages feature a low distortion pinout that improves second harmonic distortion and simplifies circuit board layout.They also feature an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). As a result, this enables more efficient heat transfer and increases reliability.

These products are rated to work over the extended industrial temperature range (-40°C to +105°C).

Feature

• High speed
  – -3 dB bandwidth (G = 1, RL= 100 ): 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: 1.3pF
  – Differential-mode capacitance: 0.1pF
• Low noise 
  – 4 nV/√Hz @ 100 kHz
  – 2.5 fA/√Hz @ 100 kHz
• Low distortion
  – 90dBc@10MHi(G=1,RL=1k92)
• 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

Appearance