The ISL55211 is a wideband, differential input to differential output amplifier offering 3 possible internal gain settings. Using fixed 500Ω internal feedback resistors, the amplifier may be configured for a differential gain of 2, 4 or 5V/V depending on which combination of input pins are connected to the signal source. Internal feedback capacitors controls the signal bandwidth to be a constant 1. 4GHz in all gain settings. Ideally suited for AC-coupled data acquisition applications, the output DC common mode voltage is controlled through an external VCM pin or left to default to 1. 2V above the negative supply pin. Where the differential signal source is AC-coupled, the input common mode voltage will equal the output common mode voltage. Intended for very high dynamic range ADC interface applications, the ISL55211 offers 5600V/µs differential slew rate, 100dBc SFDR to >100MHz for 2VP-P 2-tone 3rd order intermodulation. Its balanced architecture effectively suppresses even order distortion terms - an important issue for very wide band 1st Nyquist zone ADC interface applications. Minimum gain operation of 2V/V (6dB) with


  • 3 Fixed Gain Options: 2, 4, or 5V/V
  • Constant Bandwidth Over Gain: 1.4GHz
  • Differential Slew Rate: 5,600V/µs
  • 2VP-P, 2-tone IM3 (200Ω) 100MHz: -103dBc
  • Low Differential Output Noise (Gain 5V/V): <12nV/√Hz
  • Supply Voltage Range: 3.0V to 4.2V
  • Quiescent Power (3.3V Supply): 115mW


  • Low Power, High Dynamic Range ADC Interface
  • Differential Mixer Output Amplifier
  • SAW Filter Pre/Post Driver
  • Fixed Gain Coax Receiver

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 100
Active TQFN Reel 1000
Active TQFN Reel 250

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL55211 Datasheet Datasheet PDF 1.42 MB
User Guides & Manuals
ISL55210TQFN-EVAL1Z, ISL55211TQFN-EVAL1Z User Guide Manual PDF 669 KB
Application Notes & White Papers
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TB514: Operational Amplifier Basics Other PDF 519 KB
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General-purpose operational amplifiers and comparators Pamphlet ( D18268EJ2V0PF00 ) Flyer PDF 1.11 MB