概要

説明

The F1455 is a high-gain/high-linearity 1400MHz to 2300MHz TX variable gain amplifier (VGA) used in transmitter applications. The F1455 TX VGA provides 32dB maximum gain with +39dBm OIP3 and 4dB noise figure. Up to 29.5dB gain control is achieved using the combination of a digital step attenuator (DSA) plus KLIN™ RF variable gain amplifier gain adjustment. This device uses a single 5V supply and 216mA of ICC. It is packaged in a 6mm x 6mm, 28-QFN with 50Ω single-ended RF input and RF output impedances for ease of integration into the signal path.

特長

  • Broadband 1400MHz to 2300MHz
  • 32dB max gain
  • 4dB NF at max gain (2000MHz)
  • KLIN™ amplifier with 6dB gain range
  • DSA: 23.5dB range
  • 29.5dB total gain control range, 0.5dB step
  • < 2dB overshoot between major gain transitions such as 15.5dB to 16dB atten
  • +40dBm OIP3
  • Maintains +23.5dBm output P1dB over first 6dB gain adjustment range
  • SPI interface for DSA control
  • Single 5V supply voltage
  • ICC = 216mA
  • Up to +105 °C TCASE operating temperature
  • 50Ω input and output impedance
  • Standby for power savings
  • Pin compatible 700MHz and 2700MHz versions
  • 6mm x 6mm, 28-QFN package

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データシート PDF 4.75 MB
ガイド PDF 2.24 MB
ガイド PDF 2.83 MB
製品変更通知 PDF 113 KB
概要 PDF 1.15 MB
製品変更通知 PDF 32 KB
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Constant Linearity (KLIN) RF Technology by IDT

IDT’s KLIN (constant linearity) RF technology extends both OIP3 and output 1 dB compression point (P1dBO) amplifier gain settings. This is particularly valuable in transmitter designs where the gain of the device is maintained within a normal gain setting window about 6 dB below maximum gain. 

KLIN refers to Constant High Linearity Inner Amplifiers as the gain is adjusted. This technology extends the compression performance over a wide range of input powers, and also extends output third order intercept and corresponding inner modulation distortion performance over a wide range of output powers.

This technology is particularly advantageous in transmitter designs, where the gain of the device is maintained within a normal gain setting window.

This technology applies to some of IDT's high-gain, high-linearity transmitter variable gain amplifiers (VGAs). For more information, visit: http://www.idt.com/products/rf-products/variable-gain-amplifiers-vga.