NXP Semiconductors TFF1018HN/N1,135

Overview

TFF1018HN/N1 from NXP Semiconductors is an integrated Ku-band downconverter IC for satellite LNB applications, combining pre-amplifier, mixer, buffer amplifier, and PLL synthesizer in a single DHVQFN16 package. It operates across 10.7–12.75 GHz RF input, delivers 45 dB typical conversion gain, 7 dB SSB noise figure, and supports dual LO frequencies (9.75 GHz / 10.6 GHz) for DVB-S/S2 digital satellite reception.

For engineers reviewing the TFF1018HN/N1 datasheet, TFF1018HN/N1 pinout, TFF1018HN/N1 application, or TFF1018HN/N1 equivalent, this device is selected for low-noise, alignment-free LNB designs requiring stable 5 V operation, 25 MHz crystal reference, and high-sideband rejection in compact outdoor unit front-ends.

Technical Context

The TFF1018HN/N1 integrates a fully self-contained PLL-based local oscillator with on-chip VCO, PFD, charge pump, and divider, enabling precise 9.75 GHz or 10.6 GHz LO generation from a 25 MHz crystal. Its RF path features matched 50 Ω input impedance and internal biasing for direct connection to pHEMT LNA stages.

Conversion occurs via double-balanced active mixer architecture with AC-coupled IF output (950–2150 MHz), while HB pin controls band selection and LF/VREG pins support external loop filter implementation. All grounds are segregated (RF_GND1/2/3, IF_GND, GND1/2) to minimize coupling in high-frequency satellite front-ends.

Key Specifications

Pinout & Package

Package: DHVQFN16 - plastic dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; body dimensions 2.5 × 3.5 × 0.85 mm; exposed die pad for thermal and ground reference.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar satellite LNB downconverter applications.

Compared with MAX2151ETE+ and STV0900, the TFF1018HN/N1 uniquely combines full PLL, mixer, and preamp in a 2.5×3.5 mm 5 V package optimized specifically for LNB-level integration-offering lowest BOM count and smallest footprint among Ku-band downconverters with crystal-referenced LO.

Availability

TFF1018HN/N1 is available at Aetrix Electronics and suitable for Ku-band satellite LNB modules, DVB-S2 outdoor units, and low-power VSAT terminals requiring stable component supply and long-lifecycle support.

Supply support for TFF1018HN/N1 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 communication markets.

The TFF1018HN/N1 belongs to NXP's satellite front-end IC product line, designed specifically to replace discrete LNB signal chains with highly integrated, alignment-free downconverters for cost-sensitive digital satellite reception systems.

FAQ

What is the function of the HB pin on the TFF1018HN/N1?

The HB (High Band) pin on the TFF1018HN/N1 is a logic-controlled input that selects between two LO frequencies: a low logic level (≤0.8 V) configures the device for 9.75 GHz operation (low band), while a high level (≥2.0 V) selects 10.6 GHz (high band). This enables single-chip support for full Ku-band coverage in DVB-S/S2 LNBs without external switching components. The TFF1018HN/N1 uses this pin to reconfigure its internal PLL divider ratio and VCO tuning range accordingly.

Does the TFF1018HN/N1 require an external VCO or loop filter?

No, the TFF1018HN/N1 integrates a complete PLL subsystem-including phase-frequency detector, charge pump, divider, and VCO-with only an external passive loop filter required between the LF and VREG pins. The VCO is monolithic and factory-calibrated; no external tuning elements or varactors are needed. This eliminates VCO layout sensitivity and reduces design risk compared to discrete PLL implementations. The TFF1018HN/N1 achieves low phase noise (1.5° RMS integrated) using this fully integrated architecture.

What crystal specifications are required for the TFF1018HN/N1?

The TFF1018HN/N1 requires a 25 MHz fundamental-mode crystal with 10 pF load capacitance and ≤40 Ω equivalent series resistance (ESR). The crystal connects directly between XO1 and XO2 pins. NXP specifies this exact value to ensure stable PLL lock across temperature and voltage; deviation beyond ±100 ppm may cause LO frequency drift or loss of lock. The TFF1018HN/N1 does not support TCXO or VCXO inputs-only a standard parallel-resonant AT-cut crystal is supported.

Can the TFF1018HN/N1 be used in DVB-S2 applications?

Yes, the TFF1018HN/N1 is explicitly qualified for DVB-S2 satellite reception systems. Its 7 dB typical SSB noise figure, 45 dB conversion gain, and 15 dBm output IP3 meet the stringent SNR and linearity requirements of DVB-S2 QPSK/8PSK modulation schemes. The device's flat gain response (≤0.7 dB variation across 950–2150 MHz) ensures consistent symbol error rate across the entire IF band. The TFF1018HN/N1 has been validated in commercial DVB-S2 LNB modules per EN 300 421 and EN 302 307 standards.

What is the thermal resistance and maximum junction temperature of the TFF1018HN/N1?

The TFF1018HN/N1 has a junction-to-case thermal resistance (Rth(j-c)) of 35 K/W, measured with the exposed die pad soldered to a minimum 25 mm² copper area. Its absolute maximum junction temperature is 150°C, with recommended continuous operation below 125°C. At 52 mA supply current and 5 V, power dissipation is ~260 mW; proper thermal pad layout is essential to maintain junction temperature within specification under +85°C ambient conditions. The TFF1018HN/N1 thermal performance is validated per JEDEC JESD51-14 for DHVQFN packages.