300MHz to 4GHz Quadrature Modulator - TRF3705

TRF3705 (ACTIVE)

300MHz to 4GHz Quadrature Modulator

Recommended alternative parts

  • TRF3765  -  Integer-N/Fractional-N PLL with Integrated VCO (0.3 to 4.8GHz)

Special note

Eight ways to improve RF spurious performance,” EETimes.com, 02/27/2012

Eight ways to improve RF spurious performance,” EETimes.com, 02/27/2012

Description

The TRF3705 is a low-noise direct quadrature modulator, capable of converting complex modulated signals from baseband or IF directly up to RF. The TRF3705 is a high-performance, superior-linearity device that is ideal to up-convert to RF frequencies of 300 MHzAppropriate matching network is required for optimal performance at 300 MHz(1) through 4 GHz. The modulator is implemented as a double-balanced mixer.

The RF output block consists of a differential-to-single-ended converter that is capable of driving a single-ended 50-Ω load. The TRF3705 requires a 0.25-V common-mode voltage for optimum linearity performance. The TRF3705 also provides a fast power-down pin that can be used to reduce power dissipation in TDD applications.

The TRF3705 is available in an RGE-24 VQFN package.

Features

  • High Linearity:
    • Output IP3: 30 dBm at 1850 MHz
  • Low Output Noise Floor: –160 dBm/Hz
  • 78-dBc Single-Carrier WCDMA ACPR
    at –10-dBm Channel Power
  • Unadjusted Carrier Suppression: –40 dBm
  • Unadjusted Sideband Suppression: –45 dBc
  • Single Supply: 3.3-V Operation
  • 1-bit Gain Step Control
  • Fast Power-Up/Power-Down

View more

Parametrics Compare all products in IQ Modulator

 
Frequency (Min) (MHz)
Frequency (Max) (MHz)
I/Q Input Common-Mode Voltage (Typ)
P1dB (Typ) (dBm)
Output IP3 (Typ) (dBm)
Noise Floor (Typ) (dBm/Hz)
Unadjusted Carrier Suppression (Typ) (dBm)
Unadjusted Sideband Suppression (Typ) (dBc)
Supply (V)
Package Group
Estimated Package Size (WxL) (mm2)
Pin/Package
Approx. Price (US$)
TRF3705 TRF370315 TRF370317 TRF370333 TRF370417 TRF37T05
300     350     400     350     50     300    
4000     4000     4000     4000     6000     4000    
0.25     1.5     1.7     3.3     1.7     0.25    
13     9     12     9     12     13    
30     23     26.5     23     26.5     30    
-160     -163     -163     -163     -162     -160    
-45     -40     -40     -40     -38     -45    
-45     -40     -45     -40     -50     -45    
3.3     5     5     5     5     3.3    
VQFN     VQFN     VQFN     VQFN     VQFN     VQFN    
24VQFN: 4 x 4: 16 mm2     24VQFN: 4 x 4: 16 mm2     24VQFN: 4 x 4: 16 mm2     24VQFN: 4 x 4: 16 mm2     24VQFN: 4 x 4: 16 mm2     24VQFN: 4 x 4: 16 mm2    
24VQFN     24VQFN     24VQFN     24VQFN     24VQFN     24VQFN    
5.10 | 1ku     4.95 | 1ku     4.95 | 1ku     4.95 | 1ku     9.95 | 1ku     5.10 | 1ku    

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