Si2137/77 5th Generation Silicon TV Tuner ICs

The 5th generation universal hybrid TV tuner, the Si21x7 family supports digital and analog reception for all worldwide terrestrial and cable TV standards. By combining Silicon Labs’ proven digital low-IF architecture with a 5th-generation RF front-end, the Si21x7 maintains the highest performance that exceeds that of MOPLL-based tuners, including industry-leading 2nd order distortion performance. Pin- and API-compatibility to the previous generation minimize customers’ development effort. The Si21x7 family delivers unprecedented integration with no external balun, tracking filters, LNAs, SAW filters or inductive power supply filtering..

While other solutions may also eliminate the balun, they suffer degradation in NF and 2nd order distortion compromising reception. Silicon Labs’ proprietary and field-proven architecture delivers not only an optimized BOM but also world-class system performance. Options for single or dual supply and internal power-on reset are included. A harmonic rejection mixer delivers outstanding immunity to Wi-Fi and LTE interference, replacing the need for external filtering.

For advanced digital terrestrial TV reception, DVB-T2 and DVB-C2 constellations demand outstanding phase noise specifications, and the Si21x7 family rises to the challenge, delivering industry-leading integrated phase noise. Additionally, a software-selectable cable mode offers optimized return loss. The Si21x7 delivers exceptional picture quality and a higher number of received stations when compared to other solutions. Incorporating worldwide field experience from four prior tuner generations in mass production, the Si21x7 delivers the highest tolerance to real-world reception conditions.



  • Worldwide hybrid TV tuner
    • Analog TV: NTSC, PAL/SECAM
    • Digital TV: ATSC/QAM, DVB-T2/T/C2/C, ISDB-T/C, DTMB
  • Industry-leading margin to A/74, NorDig, D-Book, C-Book, ARIB, EN55020, OpenCable™ specifications
  • Lowest BOM for a silicon hybrid TV tuner
    • No balun
    • No SAW filters or wire-wound inductors
    • Integrated LNAs and complete tracking filters
  • Best-in-class real-world reception
    • Exceeds discrete MOPLL-based tuners
    • Industry-leading phase noise performance
    • High immunity to Wi-Fi and LTE interference
  • Low power consumption
    • 3.3 V and 1.8 V power supplies
    • Single-supply option for 3.3 V-only operation
  • Integrated power-on reset circuit
  • Flexible output interface
    • Combined ALIF/DLIF output to SoC
    • Optional DLIF output to external demodulator
  • Standard CMOS process technology
  • 4 mm x 4 mm, QFN28 package
  • RoHS compliant

Getting Started with Si2137/77 Silicon TV Tuners

Si21x7 Evaluation Kits

The easiest way to begin development with the Si2137/77 family is with the Si21x7 Evaluation Kits.

View Kits

Si2137/77 Product Matrix

Part Number Data Sheet Description
Worldwide Analog TV Tuner with Analog Demodulator for NTSC, PAL/SECAM, ATSC/QAM, DVBT2/T/C2/C, ISDB-T/C, DTMB
Worldwide Digital and Analog TV Tuner with Analog Demodulator for NTSC, PAL/SECAM, ATSC/QAM, DVBT2/T/C2/C, ISDB-T/C, DTMB
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