Skyworks Solutions Inc. SI2177-A30-GMR

Overview

Si2177-A30-GMR from Skyworks Solutions is a worldwide hybrid TV tuner IC with integrated PAL/SECAM/NTSC analog demodulator, supporting DVB-T2/T/C2/C, ATSC/QAM, ISDB-T/C, and DTMB standards across 42–870 MHz RF input range. It delivers 3.7–4.0 dB NF (VHF-H/UHF/VHF-L), –100 dBc/Hz @1 kHz LO phase noise at 860 MHz, and 55.5 dB unweighted ATV video SNR in M/N system for iDTV front-end applications.

For engineers reviewing the Si2177-A30-GMR datasheet, Si2177-A30-GMR pinout, Si2177-A30-GMR application, or Si2177-A30-GMR equivalent, key selection considerations include its balun-free architecture, dual-supply (3.3 V/1.8 V) or single-3.3 V operation, ALIF/DLIF output interface flexibility, integrated power-on reset, and industry-leading 2nd-order distortion margin to A/74 and NorDig specifications.

Technical Context

The Si2177-A30-GMR implements a low-IF digital tuner architecture with harmonic rejection mixer and 5th-generation RF front-end, eliminating external baluns, SAW filters, and wire-wound inductors. Its integrated LNAs, tracking filters, and LDOs enable full signal chain integration from antenna to SoC interface.

It features software-selectable cable mode for optimized return loss (9 dB), DLIF output for external demodulators, and combined ALIF/DLIF output for direct SoC connection. The 1.8 V digital core and 3.3 V analog supply support low-power operation (496 mW in ATV mode) while maintaining robust Wi-Fi/LTE interference immunity.

Key Specifications

Pinout & Package

Si2177-A30-GMR uses a 4×4 mm, 28-pin QFN package with exposed thermal pad (GND). Pin assignments are validated per Skyworks' official Si2177 datasheet Rev. 1.2 (August 22, 2021).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hybrid TV tuner applications.

Compared with SI2157-A10-GM and MAX3543ETJ+, the Si2177-A30-GMR provides broader standard coverage (DVB-T2/C2, ISDB-T/C), lower system BOM count, and integrated analog demodulation-enabling single-chip hybrid TV reception without external video processing.

Availability

Si2177-A30-GMR is available at Aetrix Electronics and suitable for hybrid terrestrial and cable STBs, iDTV front-ends, and PC-TV accessories requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for Si2177-A30-GMR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for wireless, broadband, automotive, and industrial markets.

The Si2177-A30-GMR belongs to Skyworks' Si21xx tuner family, engineered specifically for ultra-low-BOM, high-performance hybrid TV reception in space- and power-constrained consumer electronics.

FAQ

What TV standards does the Si2177-A30-GMR support?

The Si2177-A30-GMR supports all major worldwide digital TV standards including DVB-T2/T/C2/C, ATSC/QAM, ISDB-T/C, and DTMB, plus analog NTSC, PAL, and SECAM systems. Its RF input range spans 42–870 MHz, covering VHF-L, VHF-H, and UHF bands. This full-standard coverage is confirmed in Skyworks' official datasheet Rev. 1.2 and enables single-design deployment across North America, Europe, Asia, and Latin America without hardware variants. The Si2177-A30-GMR achieves this through programmable digital signal processing and configurable RF front-end blocks.

Does the Si2177-A30-GMR require an external crystal oscillator?

No, the Si2177-A30-GMR integrates a complete crystal oscillator circuit with XTAL_I and XTAL_O pins supporting 16–32 MHz fundamental-mode crystals. No external load capacitors or buffer amplifiers are needed. The internal oscillator provides stable clocking for the frequency synthesizer and digital demodulator, ensuring low-jitter operation critical for DVB-T2 256-QAM constellations. This capability is explicitly documented in the "Crystal Oscillator" section of the Si2177-A30-GMR datasheet.

Can the Si2177-A30-GMR operate from a single 3.3 V supply?

Yes, the Si2177-A30-GMR supports single-supply operation at 3.3 V, with internal LDOs generating the required 1.8 V for the digital core and 1.8 V for the digital I/O. This eliminates the need for a second DC-DC converter or LDO in cost-sensitive STB designs. The specification is verified in the "Electrical Characteristics" table under "Supply voltage" with "1.8 and 3.3, or only 3.3" test condition. Total power remains 496 mW in ATV mode regardless of supply configuration.

What is the function of the AGC1 and AGC2 pins on the Si2177-A30-GMR?

The AGC1 and AGC2 pins on the Si2177-A30-GMR provide independent analog voltage outputs that control gain in external RF amplifier stages. AGC1 typically drives the first LNA, while AGC2 controls a later-stage amplifier or IF gain block. Each output has rail-to-rail swing (0–VDD_L) and is calibrated to maintain constant signal level at the tuner input across varying field strengths. This dual-AGC architecture is specified in the "Pin Descriptions" section and enables dynamic range extension beyond the IC's internal 70 dB AGC range.

Is the Si2177-A30-GMR pin-compatible with earlier Skyworks tuners like the Si2157?

Yes, the Si2177-A30-GMR is pin- and API-compatible with the Si2157-A10-GM and Si2147-A20-GM families, as stated in the official product description: "Pin- and API-compatibility to the previous generation minimize customers' development effort." This includes identical 28-pin QFN footprint, matching power pin locations (VDD_H, VDD_L, VDD_IO), and consistent RF input/output pin assignments. However, new features like DVB-T2 support and cable mode require updated firmware-not hardware changes.