MAX2750EUA Fast Delivery |IC PHOENIX CO.,LIMITED

MAX2750EUA ,2.4GHz Monolithic Voltage-Controlled OscillatorsFeaturesThe MAX2750/MAX2751/MAX2752 are self-contained volt- Guaranteed Frequency Tuning Rangeage ..
MAX2753EUA ,2.4GHz Monolithic Voltage-Controlled Oscillator with Differential OutputsFeaturesThe MAX2753 is a self-contained voltage-controlled oscil- Guaranteed Frequency Tuning Ran ..
MAX2754EUA ,1.2GHz VCO with Linear Modulation InputApplicationsHomeRF WLANVCCBluetoothVVREG CCREG AND BIAS2.4GHz Cordless Phones330nF330nF2.4GHz Wirel ..
MAX2754EUA ,1.2GHz VCO with Linear Modulation InputELECTRICAL CHARACTERISTICS(MAX2754 EV kit. V = +2.7V to +5.5V, V = +0.4V to +2.4V, V ≥ +2.0V, V = + ..
MAX275ACPP+ ,4th- and 8th-Order, Continuous-Time Active FiltersAth. and 8th-Order Continuous-Time Active Filters ABSOLUTE MAXIMUM RATINGS V+ to V- ....r.tt ..
MAX275AEPP ,4th-order continuous-time active filterELECTRICAL CHARACTERISTICS (continued) -1.1. MAX274 (V+ I':::,?: 5V, V- 'CCC' -5V, test circuit ..
MAX604CSA-T ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsApplicationsMAX604EPA -40°C to +85°C 8 Plastic DIP5V and 3.3V RegulatorsMAX604ESA -40°C to +85°C 8 ..
MAX604CSA-T ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsGeneral Description ________
MAX604EPA ,3.3V or adjustable, low-dropout, low quiescent currrent, 500mA linear regulator.Features' 500mA Output Current, with Foldback CurrentThe MAX603/MAX604 low-dropout, low quiescent c ..
MAX604ESA ,5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear RegulatorsMAX603/MAX60419-0269; Rev 0; 9/945V/3.3V or Adjustable, Low-Dropout, Low I , 500mA Linear Regulator ..
MAX604ESA ,5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear RegulatorsELECTRICAL CHARACTERISTICS(V = 6V (MAX603) or 4.3V (MAX604), C = C = 10µF, OFF = V , SET = GND, T = ..
MAX604ESA+ ,5V/3.3V or Adjustable, Low-Dropout, Low-IQ, 500mA Linear RegulatorsELECTRICAL CHARACTERISTICS(V = 6V (MAX603) or 4.3V (MAX604), C = C = 10µF, OFF = V , SET = GND, T = ..

MAX2750EUA
2.4GHz Monolithic Voltage-Controlled Oscillators
General Description
The MAX2750/MAX2751/MAX2752 are self-contained volt-
age-controlled oscillators (VCOs) intended for use in the
2.4GHz to 2.5GHz ISM band. Each 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 MAX2750/MAX2751/MAX2752 operate over a +2.7V
to +5.5V supply voltage range. Internal regulation of the
oscillator supply voltage eliminates the need for an exter-
nal LDO regulator for the VCO. The IC also provides a dig-
itally controlled shutdown mode to permit implementation
of sophisticated power-supply management. In shutdown,
the supply current is reduced to less than 1µA.
________________________Applications
802.11b DSSS WLAN
802.11 FHSS WLAN
Home RF
2.4GHz Bluetooth ISM Proprietary Radio
FeaturesGuaranteed Frequency Tuning Range
MAX2750:2400MHz to 2500MHz (Zero IF)
MAX2751:2120MHz to 2260MHz
(240MHz to 280MHz IF)
MAX2752:2025MHz to 2165MHz
(335MHz to 375MHz IF)On-Chip Tank CircuitInternally Matched Output Buffer Amplifier Low-Current Shutdown Mode+2.7V to +5.5V Supply Voltage RangeMiniature 8-Pin µMAX Package
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
Typical Operating Circuit
Ordering Information
Pin Configuration appears at end of data sheet.
ABSOLUTE MAXIMUM RATINGS
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic oltage-Controlled Oscillators
DC ELECTRICAL CHARACTERISTICS
(VCC= +2.7V to +5.5V, VTUNE= +0.4V to +2.4V, VSHDN≤+2V, OUT = connected to 50Ωload, TA= -40°C to +85°C. Typical values
are at VCC= +3.0V, TA= +25°C, unless otherwise noted.) (Note 1)
AC ELECTRICAL CHARACTERISTICS
(MAX2750/MAX2751/MAX2752 EV kit, VCC= +2.7V to +5.5V, VTUNE= +0.4V to +2.4V, VSHDN≤+2V, OUT = connected to 50Ωload,
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCCto GND..............................................................-0.3V to +6V
TUNE, SHDN, BYP, OUT to GND...............-0.3V to (VCC+ 0.3V)
Continuous Power Dissipation (TA= +70°C)
8-Pin µMAX (derate 5.7mW/°C above TA= +70°C).....457mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
Note 1:Specifications are production tested at TA= +25°C. Limits over temperature are guaranteed by design and characterization.
Note 2:Tuning gain is measured at the oscillator’s guaranteed frequency limits.
Note 3:Turn-on time to within 3dB of final output power
Note 4:Turn-off time to output power of -10dBm.
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2750/MAX2751/MAX2752 EV kit, VCC= +2.7V to +5.5V, VTUNE= +0.4V to +2.4V, VSHDN≤+2V, OUT = connected to 50Ωload,
MAX2750/51/52 toc01
SUPPLY CURRENT (mA)
TEMPERATURE (°C)
MAX2750/MAX2751/MAX2752
SUPPLY CURRENT vs. TEMPERATURE
MAX2750/51/52 toc02
TEMPERATURE (°C)
SHUTDOWN CURRENT (
MAX2750/MAX2751/MAX2752
SHUTDOWN CURRENT vs. TEMPERATURE
MAX2750/51/52 toc03
TUNE INPUT CURRENT (nA)
TEMPERATURE (°C)
MAX2750/MAX2751/MAX2752
TUNING CURRENT vs. TEMPERATURE
MAX2750/51/52 toc04
VTUNE (V)
FREQUENCY (MHz)
MAX2750
VCO TUNING CURVE
MAX2750/51/52 toc05
VTUNE (V)
FREQUENCY (MHz)
MAX2751
VCO TUNING CURVE
MAX2750/51/52 toc06
VTUNE (V)
FREQUENCY (MHz)
MAX2752
VCO TUNING CURVE
Typical Operating Characteristics
(Circuit of Figure 1, VCC= +3.0V, VTUNE= +0.4V to +2.4V, VSHDN≤2V, TA = +25°C, unless otherwise noted.)
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
Pin Description
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VCC= +3.0V, VTUNE= +0.4V to +2.4V, VSHDN≤2V, TA = +25°C, unless otherwise noted.)
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
Detailed Description
Oscillator
The MAX2750/MAX2751/MAX2752 VCOs are imple-
mented as an LC oscillator topology, integrating all of
the tank components on-chip. This fully monolithic
approach provides an extremely easy-to-use VCO,
equivalent to a VCO module. The frequency is con-
trolled by a voltage applied to the TUNE pin, which is
internally connected to the varactor. The VCO core
uses a differential topology to provide a stable frequen-
cy versus supply voltage and improve the immunity to
load variations. In addition, there is a buffer amplifier
following the oscillator core to provide added isolation
from load variations and to boost the output power.
Output Buffer
The oscillator signal from the core drives an output
buffer amplifier. The amplifier is internally matched to
50Ωincluding an on-chip DC blocking capacitor. No
external DC blocking capacitor is required, eliminating
the need for any external components. The output
amplifier has its own VCCand GND pins to minimize
load-pulling effects. The amplifier boosts the oscillator
signal to a level suitable for driving most RF mixers.
Applications Information
Tune Input
The tuning input is typically connected to the output of
the PLL loop filter. The loop filter provides an appropri-
ately low-impedance source. The input may incorporate
an extra RC filter stage to reduce high-frequency noise
and spurious signals. Any excess noise on the tuning
input is directly translated into FM noise, which can
degrade the phase-noise performance of the oscillator.
Therefore, it is important to minimize the noise intro-
duced on the tuning input. A simple RC filter with low
corner frequency is needed during testing in order to
filter the noise present on the voltage source driving the
tuning line.
Layout Issues
Always use controlled impedance lines (microstrip,
coplanar waveguide, etc.) for high-frequency signals.
Always place decoupling capacitors as close to the
VCCpins as possible; for long VCClines, it may be nec-
essary to add additional decoupling capacitors located
further from the device. Always provide a low-induc-
tance path to ground, and keep GND vias as close to
the device as possible. Thermal reliefs on GND pads
are not recommended.
Figure 1. Typical Application Circuit
MAX2750/MAX2751/MAX2752
2.4GHz Monolithic
Voltage-Controlled Oscillators
Package Information
Pin Configuration
Chip Information
TRANSISTOR COUNT: 176
PROCESS: BiPOLAR

Partno	Mfg	Dc	Qty	Available	Descript
MAX2750EUA	MAX	N/a	833	avai	2.4GHz Monolithic Voltage-Controlled Oscillators