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.

特性

  • 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

产品选择

器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
F1241NBGI
Active VFQFPN 32 I 是的 Tray
Availability
F1241NBGI8
Active VFQFPN 32 I 是的 Reel
Availability

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
数据手册与勘误表
F1241 Datasheet 数据手册 PDF 1.91 MB
使用指南与说明
RF Product Selection Guide 指南 PDF 3.64 MB
应用指南 &白皮书
AN-896 RF Products EVS Digital Control Software Guide 应用文档 PDF 3.17 MB
PCN / PDN
PCN# : TB1602-01 Alternate Test Location for Select Devices 产品变更通告 PDF 39 KB
PCN# : A1406-01R1 Add Alternate Assembly 产品变更通告 PDF 35 KB
PCN# : A1406-01 Alternate Assembly Locations for Selective Package 产品变更通告 PDF 33 KB
下载
F1241 S-Parameters Model - S-Parameter ZIP 905 KB
RF Digital Control Software Installer 软件工具 ZIP 169.81 MB

开发板与套件

器件号 文档标题 类型 Company
F1241EVBI Evaluation Board for F1241 Dual Intermediate Frequency Digital Variable Gain Amplifier 评估 Renesas