MAX2623 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – Monolithic Voltage-Controlled Oscillators

19-1528; Rev 1; 5/00
Monolithic ^{EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL} Voltage-Controlled Oscillators
General Description
The MAX2622/MAX2623/MAX2624 self-contained volt-
age-controlled oscillators (VCOs) combine an integrat-
ed oscillator and output buffer in a miniature 8-pin
µMAX package.
The inductor and varactor elements of the tank circuits
are integrated on-chip, greatly simplifying application of
the part. In addition, the center frequency of oscillation
and frequency span are factory preset to provide a
guaranteed frequency range versus control voltage. An
external tuning voltage controls the oscillation frequency.
The output signals are buffered by an amplifier stage
matched on-chip to 50Ω.
The MAX2622/MAX2623/MAX2624 operate from a
+2.7V to +5.5V supply voltage and require only 8mA of
supply current. In shutdown mode, the supply current is
reduced to 0.1µA.
Applications
866MHz to 868MHz European ISM Band
(MAX2622)
DECT 1/2 Frequency LO (MAX2623)
902MHz to 928MHz ISM Band, ±10.7MHz IF
(MAX2623)
902MHz to 928MHz ISM Band, 45MHz to
70MHz IF (MAX2624)
Features
o Fully Monolithic
o Guaranteed Performance
o On-Chip 50Ω Output Match
o Wide Choice of Frequencies
855MHz to 881MHz (MAX2622)
885MHz to 950MHz (MAX2623)
947MHz to 998MHz (MAX2624)
o +2.7V to +5.5V Single-Supply Operation
o Low-Current Shutdown Mode
o Smaller than Modules (8-Pin µMAX Package)
PART
MAX2622EUA
MAX2623EUA
MAX2624EUA
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 µMAX
8 µMAX
Pin Configuration appears at end of data sheet.
Typical Operating Circuit
TUNE
SHDN
N.C.
TUNE
OSCILLATOR
CORE
GND
MAX2622
MAX2623
SHDN ^MAX2624
BIAS
GND
OUT
220pF
V_CC
V_CC
220pF
OUT TO MIXER/
SYNTHESIZER
V_CC
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