NXP Semiconductors TFF1017HN/N1,135

Overview

TFF1017HN/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 42 dB typical conversion gain, 7 dB noise figure, and supports dual LO frequencies (9.75 GHz / 10.6 GHz) for DVB-S/S2 digital satellite reception.

For engineers reviewing the TFF1017HN/N1 datasheet, TFF1017HN/N1 pinout, TFF1017HN/N1 application, or TFF1017HN/N1 equivalent, this device serves as a complete RF-to-IF signal chain solution with crystal-controlled LO generation, low 52 mA supply current, and alignment-free design for cost-sensitive satellite receiver front-ends.

Technical Context

The TFF1017HN/N1 integrates a fully self-contained PLL-based local oscillator with phase-frequency detector (PFD), charge pump, on-chip divider, and VCO-generating precise 9.75 GHz or 10.6 GHz LO signals from a 25 MHz crystal. Its RF path includes matched 50 Ω input impedance (S11 ≤ −10 dB) and 75 Ω IF output interface (S22 ≤ −10 dB), optimized for direct connection to CPW-fed LNA stages and coaxial IF distribution.

Internal bias regulation provides stable VREG output for loop filter decoupling, while HB pin controls band selection via logic-level input (VIH ≥ 2.0 V, VIL ≤ 0.8 V). The device uses exposed die pad grounding (GND, RF_GND1–3, IF_GND) for thermal management and RF isolation, supporting operation from −40 °C to +85 °C ambient.

Key Specifications

Pinout & Package

DHVQFN16 package (SOT763-1): 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 RF grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX21002ETJ+T and STV0902B, the TFF1017HN/N1 offers lowest BOM count and smallest footprint for single-output Ku-band LNBs, with factory-calibrated performance eliminating post-assembly tuning-making it optimal for high-volume consumer satellite receivers.

Availability

TFF1017HN/N1 is available at Aetrix Electronics and suitable for DVB-S/S2 satellite receiver LNBs, Ku-band dual-polarization modules, and multi-satellite monoblock designs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for TFF1017HN/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 consumer markets.

The TFF1017HN/N1 belongs to NXP's satellite receiver front-end product line, engineered specifically for cost-sensitive, high-volume Ku-band LNB applications demanding integration, low power, and production-ready performance.

FAQ

What is the function of the HB pin on the TFF1017HN/N1?

The HB pin on the TFF1017HN/N1 is a logic-controlled band selection input that determines whether the device operates at 9.75 GHz (low band) or 10.6 GHz (high band) LO frequency. A high-level signal (≥2.0 V) selects high band; a low-level signal (≤0.8 V) selects low band. This enables dynamic switching between Ku-band sub-bands in DVB-S/S2 LNB systems without changing external components or firmware. The TFF1017HN/N1 interprets the HB state at power-up and during PLL lock cycles to configure its internal divider and VCO.

Does the TFF1017HN/N1 require external loop filter components?

Yes, the TFF1017HN/N1 requires an external passive loop filter connected between pins LF (8) and VREG (9). The filter typically consists of one resistor and two capacitors configured as a third-order passive network to set PLL bandwidth, phase margin, and reference spur suppression. The TFF1017HN/N1 does not include on-die loop filter components-its charge pump and PFD outputs drive this external network to stabilize the VCO. Design values depend on desired lock time and jitter performance but commonly use R = 33 kΩ, C1 = 100 pF, C2 = 220 pF.

Can the TFF1017HN/N1 operate with a supply voltage other than 5 V?

The TFF1017HN/N1 is specified for operation at 5 V nominal supply (VCC), with absolute maximum rating of +6 V and minimum recommended operating voltage of 4.5 V. Operation below 4.5 V risks degraded conversion gain, increased noise figure, and potential PLL unlock; operation above 5.5 V violates recommended conditions and may accelerate parametric drift or reduce reliability. The TFF1017HN/N1 contains an internal regulator for VCO bias but does not regulate VCC itself-external 5 V linear regulation is required for stable performance in LNB applications.

What crystal specifications are required for the TFF1017HN/N1?

The TFF1017HN/N1 requires a fundamental-mode 25 MHz AT-cut crystal with load capacitance of 10 pF and ESR ≤40 Ω. The device integrates 10 pF internal load capacitance, so no external load capacitors are needed-only the crystal connected directly between XO1 (pin 12) and XO2 (pin 11). Frequency tolerance should be ≤±10 ppm to ensure LO accuracy within ±100 kHz across temperature and aging, meeting DVB-S/S2 spectral mask requirements. The TFF1017HN/N1 does not support TCXO or VCXO inputs.

How is thermal management handled in the TFF1017HN/N1 package?

The TFF1017HN/N1 uses a DHVQFN16 package with an exposed die pad that serves as the primary thermal and RF ground path. Effective thermal management requires soldering the die pad to a minimum 10 mm² copper pour on the PCB's inner or bottom layer, connected via ≥4 thermal vias (0.3 mm diameter) to internal ground planes. This achieves the specified 35 K/W junction-to-case thermal resistance, allowing continuous operation at 52 mA supply current up to +85 °C ambient. Inadequate pad connection raises junction temperature and degrades phase noise and gain flatness.