NXP Semiconductors TDA18275HN/C1Y

Overview

TDA18275HN/C1Y from NXP Semiconductors is a hybrid silicon tuner IC for terrestrial and cable TV reception supporting both analog (NTSC, PAL, SECAM) and digital (DVB-T/T2, ATSC, ISDB-T) broadcast standards. It delivers Low IF (LIF) outputs at 1.7–10 MHz bandwidths with center frequencies from 0.8–7.5 MHz, integrates RF/IF selectivity and PLL-based LO synthesis, and operates from a single 3.3 V supply in HVQFN32 packaging.

For engineers reviewing the TDA18275HN/C1Y datasheet, TDA18275HN/C1Y pinout, TDA18275HN/C1Y application, or TDA18275HN/C1Y equivalent, key selection criteria include multistandard RF frequency coverage (42–1002 MHz), integrated Power Level Detector (PLD) and self-AGC synchronization for analog TV, dual IF output ports, and immunity to LTE/WLAN interferers - all critical for cost-sensitive, high-density TV and set-top box designs.

Technical Context

The TDA18275HN/C1Y implements a sigma-delta PLL architecture with LC-VCO and crystal oscillator, enabling precise local oscillator generation across its full 42–1002 MHz RF input range. Its fully integrated RF front-end includes a single-ended LNA, harmonic mixer, and on-chip RF tracking filters - eliminating external baluns and RF coils.

IF signal processing uses programmable complex filtering with two independent differential IF outputs (IFOUT_A_P/N and IFOUT_D_P/N), each supporting separate gain control (VIFAGC_A/D) and configurable channel bandwidths (1.7/6/7/8/10 MHz). The embedded PLD and temperature sensor provide real-time signal monitoring via I²C-bus interface compatible with 3.3 V microcontrollers.

Key Specifications

Pinout & Package

HVQFN32 (SOT617-11), 5 × 5 × 0.85 mm, thermally enhanced, no leads, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX3543ETJ+T and SI2151-A10-GM, the TDA18275HN/C1Y uniquely combines analog/digital multistandard operation, dual IF outputs, embedded PLD, and VSync AGC - making it the only option for true hybrid TV platforms requiring field-upgradeable analog-to-digital transition.

Availability

TDA18275HN/C1Y is available at Aetrix Electronics and suitable for smart TV tuner modules, DVB-T2 set-top boxes, hybrid broadcast broadband TV (HbbTV) receivers, and analog-to-digital transition platforms requiring stable component supply and long-term production continuity.

Supply support for TDA18275HN/C1Y 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer electronics.

The TDA18275HN/C1Y belongs to NXP's silicon TV tuner product line, designed specifically to replace legacy can-based tuners with fully integrated, multistandard RF front-ends for next-generation broadcast reception systems.

FAQ

What RF standards does the TDA18275HN/C1Y support?

The TDA18275HN/C1Y supports worldwide terrestrial and cable TV standards including analog NTSC, PAL, and SECAM, as well as digital DVB-T/T2, ATSC, and ISDB-T. Its 42–1002 MHz RF frequency range and programmable IF bandwidths (1.7–10 MHz) enable compliance with regional broadcast specifications without hardware modification. This multistandard capability is confirmed in the NXP TDA18275_SDS Rev. 2 datasheet.

Does the TDA18275HN/C1Y require external filters or baluns?

No, the TDA18275HN/C1Y integrates RF selectivity, harmonic filtering, and a single-ended LNA - eliminating the need for external baluns, RF tracking filters, or SAW devices. Its fully integrated architecture reduces tuner BOM count significantly, as stated in the "Features and benefits" section of the official short data sheet. This integration is validated by the block diagram showing on-chip LC-VCO, mixer, and IF filter stages.

How does the TDA18275HN/C1Y handle analog TV AGC synchronization?

The TDA18275HN/C1Y implements self-AGC synchronization (VSync mode) that automatically aligns IF gain control with vertical synchronization pulses in analog TV signals. This feature removes the need for manual alignment procedures during manufacturing or field service. The VSync functionality is explicitly documented in the "Features and benefits" list and supported by the dedicated VSync pin in the block diagram of the TDA18275_SDS Rev. 2.

What is the purpose of the two IF output ports on the TDA18275HN/C1Y?

The TDA18275HN/C1Y provides two independent differential IF output ports: IFOUT_A_P/N for analog demodulation and IFOUT_D_P/N for digital demodulation. Each path has dedicated gain control (VIFAGC_A/D) and supports configurable bandwidths. This dual-path architecture enables simultaneous analog/digital reception or seamless migration between broadcast standards using the same hardware platform - a key differentiator confirmed in the General Description section.

Is the TDA18275HN/C1Y suitable for environments with strong LTE or WLAN interference?

Yes, the TDA18275HN/C1Y features strong immunity to LTE interferers in the digital dividend band (698–806 MHz) and WLAN signals (802.11 a/b/g/n). This is achieved through on-chip image rejection (>65 dB) and optimized RF front-end filtering, as verified in the Quick Reference Data table and highlighted in the "Features and benefits" list. These characteristics make it suitable for urban deployments where co-location with cellular and Wi-Fi infrastructure is common.