The IDT F1241 IF VGA featuring FlatNoise™ technology improves system SNR, especially at lower gain settings. By keeping both IP3O & NF flat while gain is backed off, the system SNR is improved significantly under high level interferer conditions, especially when considering alias noise in an IF sampling receiver. The fast-settling, parallel mode gain step of 1.0 dB coupled with the excellent differential non-linearity allow for SNR to be maximized further by targeting the minimum necessary gain in small, accurate increments. The matched output does not require a terminating resistor, thus the gain and distortion performance are preserved when driving Bandpass Anti-Alias filters.

Features

  • Ideal for systems with high SNR requirements
  • 20 dB typical Maximum Gain
  • 31 dB gain control range
  • 5 bit control
  • 1.0 dB Gain Steps
  • Excellent Noise Figure ~ 4.0 dB
  • 5mm x 5mm 32 pin package
  • 200 ohm Differential Matched Input
  • 200 ohm Differential Matched Output
  • No termination resistor required
  • NF degrades < 2dB @ 10 dB reduced gain
  • 10 MHz – 500 MHz frequency range
  • Ultra-Linear: IP3O +47 dBm typical
  • Excellent 2nd Harmonic Rejection
  • Parallel Control
  • External current setting resistors
  • Very fast settling < 15 nsec
  • Individual Power Down Modes
  • Extremely low power consumption:  79 mA / Ch

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 32 I Yes Tray
Availability
Active VFQFPN 32 I Yes Reel
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
F1241 Datasheet Datasheet PDF 1.91 MB
User Guides & Manuals
RF Product Selection Guide Guide PDF 3.64 MB
Application Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 3.17 MB
PCNs & PDNs
PCN# : TB1602-01 Alternate Test Location for Select Devices Product Change Notice PDF 39 KB
PCN# : A1406-01R1 Add Alternate Assembly Product Change Notice PDF 35 KB
PCN# : A1406-01 Alternate Assembly Locations for Selective Package Product Change Notice PDF 33 KB

Downloads

Title language Type Format File Size Date
Software
RF Digital Control Software Installer Software Tool ZIP 169.81 MB
Models
F1241 S-Parameters Model - S-Parameter ZIP 905 KB

Boards & Kits

Part Number Title Type Company
F1241EVBI Evaluation Board for F1241 Dual Intermediate Frequency Digital Variable Gain Amplifier Evaluation Renesas