ChipDocs - Datasheet Source for Semiconductor and Electronic Circuit Components
More than
477 696 
registered clients
Description:Dual, Ultralow Noise Variable Gain Amplifier
Manufacturer:Analog Devices
Datasheet:PDF (892K).
Click here to download *)

The AD604 is an ultralow noise, very accurate, dual-channel, linear-in-dB variable gain amplifier (VGA) optimized for timebased variable gain control in ultrasound applications; however, it supports any application requiring low noise, wide bandwidth, variable gain control. Each channel of the AD604 provides a 300 k input resistance and unipolar gain control for ease of use. User-determined gain ranges, gain scaling (dB/V), and dc level shifting of output further optimize performance. Each channel of the AD604 uses a high performance preamplifier that provides an input-referred noise voltage of 0.8 nV/Hz. The very accurate linear-in-dB response of the AD604 is achieved with the differential input exponential amplifier (DSX-AMP) architecture. Each of the DSX-AMPs comprises a variable attenuator of 0 dB to 48.36 dB followed by a high speed fixed gain amplifier. The attenuator is a 7-stage R-1.5R ladder network. The attenuation between tap points is 6.908 dB and 48.36 dB for the ladder network. The equation for the linear-in-dB gain response is G (dB) =

Click here to download AD604-EVALZ Datasheet
Click here to download AD604-EVALZ Datasheet
*)Datasheets downloading from ChipDocs is only for our members (paid service). REGISTER NOW for your membership.
Free Subscription to Offshore Engineer Magazine
Free Subscription to Offshore Engineer Magazine
Offshore Engineer Magazine.
Subscribe now for FREE !
Win Win Circuit - PCB,PCBA,Touch Screen,LED Lighting
Win Win Circuit LTD. PCB, PCBA, LCD Module