0.3 - 1.7 GHz Wide Bandwidth Integrated Direct Downconversion Receiver - TRF371109

TRF371109 (ACTIVE)

0.3 - 1.7 GHz Wide Bandwidth Integrated Direct Downconversion Receiver

Recommended alternative parts

  • TRF3765  -  The TRF3765 is a wideband fractional-N PLL/VCO. It can generate any frequency from 300M-4800MHz with excellent phase noise using a multi-core internal VCO


The TRF371109 is a highly linear direct-conversion quadrature receiver. The TRF371109 integrates balanced I and Q mixers, LO buffers, and phase splitters to convert an RF signal directly to I and Q baseband. The on-chip programmable gain amplifiers allow adjustment of the output signal level without the need for external variable gain (attenuator) devices. The TRF371109 integrates programmable baseband low-pass filters that attenuate nearby interference, eliminating the need for an external baseband filter.

Housed in a 7-mm × 7-mm VQFN package, the TRF371109 provides the smallest and most integrated receiver solution available for high-performance equipment.


  • Frequency Range: 300 MHz to 1700 MHz
  • Integrated Baseband Programmable Gain Amplifier
  • On-Chip Programmable Baseband Filter
  • High Cascaded IP3: 27 dBm at 900 MHz
  • High IP2: 68 dBm at 900 MHz
  • Hardware and Software Power Down
  • Three-Wire Serial Interface
  • Single Supply: 4.5-V to 5.5-V Operation
  • Silicon Germanium Technology
    • Multicarrier Wireless Infrastructure
    • WiMAX
    • High-Linearity Direct-Downconversion Receiver
    • LTE (Long Term Evolution)

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Parametrics Compare all products in IQ Demodulator

BB BW LP Filter (Min) (MHz)
BB BW LP Filter (Max) (MHz)
Supply Voltage (Typ) (V)
IIP3 (Typ) (dBm)
IIP2 (Typ) (dBm)
Frequency (Typ)
Package Group
Estimated Package Size (WxL) (mm2)
Approx. Price (US$)
TRF371109 TRF3710 TRF371125 TRF371135
0.7     0.615     0.7     0.7    
15     1.92     15     15    
5     5     5     5    
27     21     24     22    
68     60     60     52    
0.3 to 1.7 GHz     1.7 to 2.0 GHz     0.7 - 4.0 GHz     1.7 - 6.0 GHz    
VQFN     VQFN     VQFN     VQFN    
48VQFN: 7 x 7: 49 mm2     48VQFN: 7 x 7: 49 mm2     48VQFN: 7 x 7: 49 mm2     48VQFN: 7 x 7: 49 mm2    
48VQFN     48VQFN     48VQFN     48VQFN    
11.15 | 1ku     16.48 | 100u     11.15 | 1ku     11.15 | 1ku    

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