NXP Semiconductors TFF11152HN/N1,111

Overview

TFF11152HN/N1,111 from NXP Semiconductors is a Ku-band frequency generator IC designed as a low-phase-noise local oscillator (LO) for VSAT upconverters and transceivers. It delivers RF output from 14.80 GHz to 15.50 GHz, achieves −97 dBc/Hz synthesizer phase noise at 100 kHz offset (with 64× division), and operates from a 3.3 V supply drawing 100–130 mA - enabling high-fidelity LO synthesis in satellite ground terminals.

For engineers reviewing the TFF11152HN/N1,111 datasheet, TFF11152HN/N1,111 pinout, TFF11152HN/N1,111 application, or TFF11152HN/N1,111 equivalent, key selection criteria include IESS-308 compliance, differential reference input support (58–969 MHz), programmable divider settings (16/32/64/128/256), integrated VCO regulator (VREGVCO), and dual differential RF outputs with −7 dBm typical power.

Technical Context

The TFF11152HN/N1,111 implements a third- or fourth-order PLL architecture with a voltage-controlled oscillator (VCO) core, phase-frequency detector (PFD), and charge pump (CP). Its loop filter interface supports type-2 or type-3 configurations via CPOUT and VTUNE pins, with internal 10 pF and 30 pF capacitors referenced to VREGVCO (2.7 V typical).

It features fully differential reference inputs (IN(REF)_P/N), four independent RF output terminals (BUF1_P/N, BUF2_P/N), and a dedicated lock-detect output (LCKDET) with 2.5 V CMOS logic levels. Divider control is implemented via three logic-configurable pins (NSL0–NSL2), with predefined startup settings required and no runtime reconfiguration supported.

Key Specifications

Pinout & Package

Package: HVQFN24 (SOT616-1), 4 × 4 × 0.85 mm, thermally enhanced, leadless quad flat package with exposed diepad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMX2594RHBR and HMC703LP4E, the TFF11152HN/N1,111 uniquely combines IESS-308 validation, differential reference input, integrated VREGVCO, and dual buffered outputs - making it purpose-built for production VSAT upconverters requiring drop-in regulatory compliance and layout simplicity.

Availability

TFF11152HN/N1,111 is available at Aetrix Electronics and suitable for VSAT upconverters, Ku-band transceivers, satellite modem reference designs, and Intelsat-certified ground terminals requiring stable component supply and documented phase noise performance.

Supply support for TFF11152HN/N1,111 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 TFF11152HN/N1,111 belongs to NXP's Ku-band RF synthesizer product line, engineered specifically to meet stringent phase noise and regulatory requirements of satellite communications equipment - particularly VSAT terminals operating under Intelsat IESS-308 specifications.

FAQ

What Ku-band frequency range does the TFF11152HN/N1,111 support?

The TFF11152HN/N1,111 supports a guaranteed RF output frequency range of 14.80 GHz to 15.50 GHz. This range is specified under recommended operating conditions and is validated for use in Ku-band VSAT upconverters and transceivers. The device achieves this using its internal VCO and programmable divider, with phase noise performance meeting IESS-308 requirements across the full band.

Does the TFF11152HN/N1,111 require an external VCO?

No, the TFF11152HN/N1,111 integrates a voltage-controlled oscillator (VCO) core. It does not require an external VCO. The device uses the VTUNE pin (pin 3) to control VCO frequency within the 14.80–15.50 GHz range, with tuning voltage referenced to the internally regulated VREGVCO (pin 1) at 2.7 V typical. External loop filter components connect between CPOUT (pin 2), VTUNE (pin 3), and VREGVCO (pin 1).

How is the divider ratio configured on the TFF11152HN/N1,111?

The divider ratio on the TFF11152HN/N1,111 is configured using three logic pins: NSL0 (pin 4), NSL1 (pin 5), and NSL2 (pin 6). These pins accept open-circuit ("1") or grounded ("0") states to select one of five division values: 16, 32, 64, 128, or 256. Configuration must be fixed at power-up; dynamic reconfiguration during operation is not supported, and the device is only guaranteed to function with stable divider settings.

What is the purpose of the VREGVCO pin on the TFF11152HN/N1,111?

The VREGVCO pin (pin 1) on the TFF11152HN/N1,111 provides a regulated 2.7 V output used as the reference voltage for the VCO tuning range and internal loop filter capacitors. It serves as the bias node for the 10 pF capacitor (between CPOUT and VREGVCO) and the 30 pF capacitor (between VTUNE and VREGVCO). External loop filter components must be referenced to this pin to ensure stable PLL operation and meet specified phase noise performance.

Can the TFF11152HN/N1,111 drive a 50 Ω load directly?

Yes, the TFF11152HN/N1,111 can drive a 50 Ω load directly. Its RF output stage consists of two differential pairs (BUF1_P/N and BUF2_P/N), each with built-in 50 Ω collector resistors. When used single-ended, the non-driven output must be terminated with 50 Ω to maintain impedance balance and prevent reflections. Output power is specified as −7 dBm per pin under matched 50 Ω conditions, measured at the fundamental tone only.