MAX2620 查看數據表（PDF） - Maxim Integrated
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MAX2620 Datasheet PDF : 11 Pages
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10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs
ABSOLUTE MAXIMUM RATINGS
VCC1, VCC2 to GND .................................................-0.3V to +6V
TANK, SHDN to GND .................................-0.3V to (VCC + 0.3V)
OUT, OUT to GND...........................(VCC - 0.6V) to (VCC + 0.3V)
FDBK to GND ..................................(VCC - 2.0V) to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
µMAX (derate 5.7mW/°C above +70°C) .....................457mW
Operating Temperature Range
MAX2620EUA .................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(VCC1, VCC2 = +2.7V to +5.25V, FDBK = open, TANK = open, OUT and OUT connected to VCC through 50Ω, SHDN = 2V,
TA = -40°C to +85°C, unless otherwise noted. Typical values measured at VCC1 = VCC2 = 3.0V, TA = +25°C.) (Note 1)
PARAMETER
Supply Current
Shutdown Current
Shutdown Input Voltage High
Shutdown Input Voltage Low
Shutdown Bias Current High
Shutdown Bias Current Low
SHDN = 0.6V
SHDN = 2.0V
SHDN = 0.6V
CONDITIONS
MIN TYP MAX UNITS
9.0
12.5
mA
0.1
2
µA
2.0
V
0.6
V
5.5
20
µA
0.5
µA
Note 1: Specifications are production tested and guaranteed at TA = +25°C and TA = +85°C. Specifications are guaranteed by
design and characterization at TA = -40°C.
AC ELECTRICAL CHARACTERISTICS
(Test Circuit of Figure 1, VCC = +3.0V, SHDN = VCC, ZLOAD = ZSOURCE = 50Ω, PIN = -20dBm (50Ω), fTEST = 900MHz,
TA = +25°C, unless otherwise noted.)
PARAMETER
Frequency Range
Reverse Isolation
Output Isolation
CONDITIONS
TA = -40°C to +85°C (Note 2)
OUT or OUT to TANK; OUT, OUT driven at P = -20dBm
OUT to OUT
MIN TYP MAX UNITS
10
1050 MHz
50
dB
33
dB
Note 2: Guaranteed by design and characterization at 10MHz, 650MHz, 900MHz, and 1050MHz. Over this frequency range, the
magnitude of the negative real impedance measured at TANK is greater than one-tenth the magnitude of the reactive
impedances at TANK. This implies proper oscillator start-up when using an external resonator tank circuit with Q > 10. C3
and C4 must be tuned for operation at the desired frequency.
2 _______________________________________________________________________________________
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