10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs
ABSOLUTE MAXIMUM RATINGS
V
1, V 2 to GND .................................................-0.3V to +6V
Operating Temperature Range
CC
CC
TANK, SHDN to GND .................................-0.3V to (V
+ 0.3V)
+ 0.3V)
+ 0.3V)
MAX2620EUA.................................................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
CC
CC
OUT, OUT to GND...........................(V
FDBK to GND..................................(V
- 0.6V) to (V
- 2.0V) to (V
CC
CC
Continuous Power Dissipation (T = +70°C)
A
µMAX (derate 5.7mW/°C above +70°C) .....................457mW
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
(V 1, V 2 = +2.7V to +5.25V, FDBK = open, TANK = open, OUT and OUT connected to V
through 50Ω, SHDN = 2V,
CC
CC
CC
T
= -40°C to +85°C, unless otherwise noted. Typical values measured at V 1 = V 2 = 3.0V, T = +25°C.) (Note 1)
CC CC
A
A
PARAMETER
CONDITIONS
MIN
TYP
9.0
MAX
12.5
2
UNITS
mA
µA
V
Supply Current
Shutdown Current
0.1
SHDN = 0.6V
Shutdown Input Voltage High
Shutdown Input Voltage Low
Shutdown Bias Current High
Shutdown Bias Current Low
2.0
0.6
20
V
5.5
µA
µA
SHDN = 2.0V
SHDN = 0.6V
0.5
Note 1: Specifications are production tested and guaranteed at T = +25°C and T = +85°C. Specifications are guaranteed by
A
A
design and characterization at T = -40°C.
A
AC ELECTRICAL CHARACTERISTICS
(Test Circuit of Figure 1, V
= +3.0V, SHDN = V , Z
= Z
= 50Ω, P = -20dBm (50Ω), f
= 900MHz,
CC
CC
LOAD
SOURCE
IN
TEST
T
= +25°C, unless otherwise noted.)
A
PARAMETER
CONDITIONS
= -40°C to +85°C (Note 2)
MIN
TYP
MAX
UNITS
MHz
dB
Frequency Range
Reverse Isolation
Output Isolation
T
A
10
1050
50
33
OUT or OUT to TANK; OUT, OUT driven at P = -20dBm
OUT to OUT
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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