NXP Semiconductors TFF1007HN/N1,115

Overview

TFF1007HN/N1,115 from NXP Semiconductors is a Ka-band frequency synthesizer IC designed as a low-phase-noise local oscillator generator for VSAT upconverters. It delivers 14.62–15.00 GHz RF output with −109 dBc/Hz typical phase noise at 100 kHz offset (divider = 64, loop BW = 2 MHz), complies with IESS-308, and operates from a 228.44–234.38 MHz differential reference input.

For engineers reviewing the TFF1007HN/N1,115 datasheet, TFF1007HN/N1,115 pinout, TFF1007HN/N1,115 application, or TFF1007HN/N1,115 equivalent, this page provides verified PLL architecture details, HVQFN24 terminal mapping, Ka-band LO design constraints, and validated alternatives for VSAT transceiver timing subsystems.

Technical Context

The TFF1007HN/N1,115 integrates a third- or fourth-order PLL with a voltage-controlled oscillator (VCO) tuned via VTUNE (pin 3), charge pump output CPOUT (pin 2), and internally regulated VREGVCO (pin 1). Its divider supports fixed values (16, 32, 64, 128, 256) set by NSL2–NSL0 pins, with guaranteed performance only at 64.

It features dual differential RF outputs (BUF1_P/N, BUF2_P/N), a 2.5 V CMOS lock detect (LCKDET, pin 7), and a differential reference input (IN(REF)_P/N, pins 9–10) requiring AC coupling. The VCO regulator output (2.5–2.9 V) stabilizes loop filter biasing, and spurious suppression exceeds −60 dBc within ±1 MHz.

Key Specifications

Pinout & Package

Package: HVQFN24 (SOT616-1), 4 × 4 × 0.85 mm, thermally enhanced, no leads, exposed diepad landing for GND connections.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HMC738LP4E and ADF4371BCPZ, the TFF1007HN/N1,115 offers purpose-built IESS-308 compliance, minimal external component count for Ka-band LO generation, and guaranteed 64× division performance - making it optimal for cost-sensitive, high-volume VSAT upconverter modules where regulatory certification and layout simplicity are critical.

Availability

TFF1007HN/N1,115 is available at Aetrix Electronics and suitable for Ka-band VSAT upconverters, satellite modem LO subsystems, and fixed satellite service terminal designs requiring stable component supply and IESS-308-compliant phase noise performance.

Supply support for TFF1007HN/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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communication infrastructure markets.

The TFF1007HN/N1,115 belongs to NXP's RF and microwave frequency generation product line, engineered specifically for high-reliability satellite communications equipment requiring certified low-phase-noise local oscillator synthesis in the Ka band.

FAQ

What is the guaranteed divider setting for TFF1007HN/N1,115 and why is it critical?

The TFF1007HN/N1,115 is guaranteed only at divider setting 64 (NSL2–NSL0 = 010). Other settings (16, 32, 128, 256) are functional but uncharacterized - phase noise, lock time, and spurious performance are not specified. Using divider = 64 ensures compliance with IESS-308 and enables the −109 dBc/Hz phase noise at 100 kHz offset stated in the TFF1007HN/N1,115 datasheet.

Does TFF1007HN/N1,115 require external loop filter components, and what topology is supported?

Yes, the TFF1007HN/N1,115 requires external passive loop filter components. It supports both type-2 (CPOUT connected to VTUNE) and type-3 (R2/C3 added between CPOUT and VTUNE) topologies. Type-3 improves spurious suppression to −60 dBc but increases component count; type-2 simplifies design at the cost of reduced spur rejection. Both rely on VREGVCO (pin 1) as the filter reference node.

How is the reference input configured for TFF1007HN/N1,115, and what are the termination requirements?

The TFF1007HN/N1,115 reference input (IN(REF)_P/N, pins 9–10) is a high-impedance differential pair requiring AC coupling. For differential drive, both inputs must be terminated to 50 Ω. In single-ended mode, the unused input must be terminated to 50 Ω matching the source impedance. The reference frequency must be 228.44–234.38 MHz to yield 14.62–15.00 GHz output at divider = 64.

What are the thermal and supply requirements for reliable operation of TFF1007HN/N1,115?

The TFF1007HN/N1,115 operates from −40 °C to +85 °C ambient temperature with 3.0–3.6 V supply across three domains: VCC(REF), VCC(DIV), and VCC(BUF). Each requires local 100 nF + 10 µF decoupling to its respective ground (GND1/2/3(REF), GND(DIV), GND1/2/3(BUF)). Thermal resistance junction-to-solder point is 25 K/W; ensure adequate PCB copper pour under the exposed diepad for heat dissipation.

Can TFF1007HN/N1,115 drive a mixer directly, and what is the expected output match?

Yes, the TFF1007HN/N1,115 delivers −4 dBm minimum per differential output (BUF1_P/N or BUF2_P/N), sufficient to drive most GaAs/GaN mixers without amplification. Output return loss is −10 dB minimum (de-embedded to footprint), indicating acceptable 50 Ω match. Unused outputs must be terminated to 50 Ω to prevent reflections that degrade phase noise and output power flatness.