GENERAL DESCRIPTION
The ADMV4630 is a Ku band upconverter optimized for various
satellite communication (SATCOM) user terminals that operate in
the 14.0 GHz to 14.5 GHz frequency range.
The ADMV4630 local oscillator (LO) signal is generated internally
via the on-chip Integer N (INT) synthesizer. The internal synthesizer
enables LO frequency coverage from 8.7 GHz to 10.7 GHz. The
input intermediate frequency (IF) signals from 3 GHz to 5 GHz are
upconverted to an RF of 14.0 GHz to 14.5 GHz. The chip includes
filtering to attenuate both the LO feedthrough and unwanted lower
sideband. The chip also includes a digital step attenuator at the
IF input to provide up to 31 dB of gain control range with 1 dB
steps to adjust for preceding cable losses. The transmitter output is
automatically muted if the synthesizer becomes unlocked.
The digital serial peripheral interface (SPI) allows fast frequency
and gain programming. In addition to the digital SPI control, an
analog control pin (TX_MUTE) quickly powers down all circuits and
places the receiver in standby mode for power saving. Another
analog general-purpose input/output (AGPIO) pin can be used
either as an input to be read by the on-chip analog-to-digital
converter (ADC), or as an analog output for proportional to absolute
temperature (PTAT) voltages. There are also three digital GPIO
pins that output logic levels to control external devices using the
SPI.
The ADMV4630 upconverter comes in a compact, thermally enhanced,
6 mm × 6 mm, 40-lead lead frame chip scale package
(LFCSP). The ADMV4630 operates over the −40°C to +85°C case temperature range.

FEATURES
► IF to Ku band upconverter with integrated PLL
► RF output frequency range: 14.0 GHz to 14.5 GHz
► Internal LO frequency range: 8.7 GHz to 10.7 GHz
► Noise floor density: <−140 dBm/Hz
► Matched 50 Ω single-ended RF output and IF input
► On-chip power detector
► On-chip ADC
► Provides transmitter synthesizer lock detect
► Programmable at 20 MHz via 4-wire SPI interface
► Transmitter mute function
► 40-lead, 6 mm × 6 mm LFCSP package

APPLICATIONS
► SATCOM user terminals