NXP Semiconductors TFF1003HN/N1,115

Overview

TFF1003HN/N1,115 from NXP Semiconductors is a Ku-band phase-locked loop (PLL) frequency generator IC designed as a low-phase-noise local oscillator for VSAT upconverters. It delivers 12.8–13.05 GHz RF output with −97 dBc/Hz typical synthesizer phase noise at 100 kHz offset (divider = 64), complies with IESS-308, and operates from 3.0–3.6 V supply drawing 100–130 mA.

For engineers reviewing the TFF1003HN/N1,115 datasheet, TFF1003HN/N1,115 pinout, TFF1003HN/N1,115 application, or TFF1003HN/N1,115 equivalent, this page provides verified functional identity, HVQFN24 package mapping, confirmed PLL architecture (third/fourth-order), validated divider settings (16–256), and real-world RF output behavior for Ku-band satellite transceiver design.

Technical Context

The TFF1003HN/N1,115 integrates a voltage-controlled oscillator (VCO) with 0.3–1.0 GHz/V tuning sensitivity, a phase-frequency detector (PFD), charge pump (1 mA typical), and programmable divider (16/32/64/128/256). Its loop filter supports type-2 or type-3 configurations using internal 10 pF and 30 pF capacitors referenced to VREGVCO (2.7 V regulated).

It features differential reference input (IN(REF)_P/N, 50–816 MHz), dual differential RF outputs (BUF1_P/N, BUF2_P/N), lock detection (LCKDET, CMOS 2.5 V), and internally stabilized voltage references for REF, DIV, and BUF supplies - all optimized for stable LO generation in narrow-channel Ku-band VSAT systems.

Key Specifications

Pinout & Package

Package: HVQFN24 (SOT616-1), plastic thermal-enhanced very thin quad flat package; 4 × 4 × 0.85 mm body; 24-terminal no-lead construction with exposed diepad for thermal and ground integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LO generator applications.

Compared with HMC738LP4E and ADF4351BCPZ, the TFF1003HN/N1,115 offers certified IESS-308 compliance, integrated VCO regulation, and optimized Ku-band performance - making it the only drop-in solution for production VSAT upconverters requiring regulatory approval.

Availability

TFF1003HN/N1,115 is available at Aetrix Electronics and suitable for Ku-band satellite communications, VSAT upconverter design, and fixed satellite service ground terminals requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for TFF1003HN/N1,115 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 leader specializing in secure connectivity solutions for automotive, industrial, and communication infrastructure markets.

The TFF1003HN/N1,115 belongs to NXP's high-frequency RF synthesis product line, engineered specifically for low-phase-noise local oscillator generation in satellite communication systems compliant with Intelsat and ITU-R standards.

FAQ

What is the guaranteed RF output frequency range of the TFF1003HN/N1,115?

The TFF1003HN/N1,115 guarantees an RF output frequency range of 12.8 GHz to 13.05 GHz under all operating conditions specified in Table 10 of the datasheet. This range is fixed and cannot be extended beyond these limits by adjusting divider settings or reference input - it reflects the inherent VCO capability and is validated per IESS-308 compliance testing for Ku-band VSAT applications.

Does the TFF1003HN/N1,115 support fractional-N synthesis?

No, the TFF1003HN/N1,115 implements integer-N PLL synthesis only, with five discrete divider values (16, 32, 64, 128, 256) selected via NSL0–NSL2 pins. It does not include a sigma-delta modulator or fractional divider circuitry. All frequency resolution is determined solely by the reference input frequency divided by one of these fixed integer values - a design choice prioritizing phase noise performance and IESS-308 compliance over fine frequency step size.

How is the TFF1003HN/N1,115's phase noise performance validated against IESS-308?

The TFF1003HN/N1,115's phase noise is validated per IESS-308 Section 4.2.2 using a reference source with −149 dBc/Hz phase noise at 100 kHz offset (divider = 64). Under those test conditions, the device achieves −97 dBc/Hz typical and −92 dBc/Hz maximum at 100 kHz offset - meeting the IESS-308 limit of −90 dBc/Hz. This validation is documented in Table 12 of the official NXP datasheet Rev. 2.

Can the TFF1003HN/N1,115 operate with a single-ended reference input?

Yes, the TFF1003HN/N1,115 supports single-ended reference input: terminate the unused IN(REF)_N pin with the same impedance as the driving source (e.g., 50 Ω to ground), AC-couple the active IN(REF)_P signal, and ensure proper common-mode biasing. Figure 8 in the datasheet illustrates this configuration, confirming functional operation - though differential mode delivers superior noise rejection and jitter performance.

What thermal management is required for continuous operation of the TFF1003HN/N1,115?

The TFF1003HN/N1,115 has a junction-to-solder-point thermal resistance (Rth(j-sp)) of 25 K/W. To maintain junction temperature ≤125 °C at maximum ambient (85 °C) and full load (130 mA), the PCB must provide ≥200 mm² of copper area connected to the exposed diepad, with ≥4 thermal vias (0.3 mm diameter) to inner ground planes. No heatsink is required if these layout guidelines are followed per Figure 9 package outline.