MAX2750AUA Datasheet, PDF (1/6 Pages) Maxim Integrated Products – 2.4GHz Monolithic Voltage-Controlled Oscillator for Automotive

19-0831; Rev 0; 6/07
2.4GHz Monolithic
Voltage-Controlled Oscillator for Automotive
General Description
The MAX2750AUA is a self-contained voltage-controlled
oscillator (VCO) intended for use over the 2370MHz
to 2470MHz frequency range. The IC combines a fully
integrated oscillator and output buffer in a miniature 8-pin
µMAX^® package.
The inductor and varactor elements of the tank are inte-
grated on-chip, greatly simplifying application of the part.
The only required external components are a couple of
supply bypass capacitors. The IC provides direct connec-
tion to the VCO tuning voltage input and the VCO buffer
output. The tuning voltage input range is +0.4V to +2.4V,
and the oscillator frequency tuning range is factory adjust-
ed to provide guaranteed limits. The output signal is
buffered by an amplifier stage (internally matched to 50Ω)
to provide higher output power and isolate the device from
load impedance variations.
The MAX2750AUA operates over a +2.7V to +5.5V sup-
ply voltage range. Internal regulation of the oscillator sup-
ply voltage eliminates the need for an external LDO
regulator for the VCO. The IC also provides a digitally con-
trolled shutdown mode to permit implementation of
sophisticated power-supply management. In shutdown,
the supply current is reduced to less than 2µA.
________________________Applications
Automotive
2.4GHz ISM Band
Features
♦ Guaranteed Frequency Tuning Range:
2370MHz to 2470MHz
♦ On-Chip Tank Circuit
♦ Internally Matched Output Buffer Amplifier
♦ Low-Current Shutdown Mode
♦ +2.7V to +5.5V Supply Voltage Range
♦ Miniature 8-Pin µMAX Package
♦ -40°C to +125°C Temperature Range
Ordering Information
PART
TEMP RANGE
MAX2750AUA+ -40°C to +125°C
+Denotes a lead-free package.
PIN-
PACKAGE
8 μMAX
PKG
CODE
U8-1
Pin Configuration appears at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
BYP
GND
TUNE
TUNE
OSCILLATOR
OUT
CORE
GND
V_CC1
MAX2750AUA
SHDN
SHDN
V_CC2
BIAS
OUT TO MIXER/
SYNTHESIZER
V_CC
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.