Datasheet

MAX2870
23.5MHz to 6000MHz Fractional/
Integer-N Synthesizer/VCO
2Maxim Integrated
V
CC_
to GND_ .......................................................-0.3V to +3.9V
All Other Pins to GND_ .............................. -0.3V to V
CC_
+ 0.3V
Continuous Power Dissipation (T
A
= +70NC)
TQFN-EP Multilayer Board
(derate 34.5mW/NC above +70NC) .........................2758.6mW
Junction Temperature .....................................................+150NC
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +150NC
Lead Temperature (soldering, 10s) .............................. +300NC
Soldering temperature (reflow) .......................................+260NC
TQFN
Junction-to-Ambient Thermal Resistance (B
JA
) ..........29NC/W Junction-to-Case Thermal Resistance (B
JC
) ..................1.7NC/W
ABSOLUTE MAXIMUM RATINGS
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
DC ELECTRICAL CHARACTERISTICS
(Measured using MAX2870 EV Kit. V
CC_
= 3V to 3.6V, V
GND_
= 0V, f
REF_IN
= 50MHz, f
PFD
= 25MHz, T
A
= -40NC to +85NC. Typical
values measured at V
CC
_
= 3.3V; T
A
= +25NC; register settings 00780000,20000141,01005E42,00000013,610F423C,01400005;
unless otherwise noted.) (Note 2)
AC ELECTRICAL CHARACTERISTICS
(Measured using MAX2870 EV Kit. V
CC_
= 3V to 3.6V, V
GND_
= 0V, f
REF_IN
= 50MHz, f
PFD
= 25MHz, f
RFOUT_
= 6000MHz,
T
A
= -40NC to +85NC. Typical values measured at V
CC_
= 3.3V, T
A
= +25NC, register settings 00780000,20000141,01005E42,00000
013,610F423C,01400005; unless otherwise noted.) (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Voltage 3 3.3 3.6 V
RFOUT_ Current Consumption
I
RFOUT_
, minimum output power, single channel 8.5
mA
I
RFOUT_
, maximum output power, single channel 25 29
Supply Current
Both channels
enabled,
maximum
output power
Total, including RFOUT, both
channel (Note 3)
144 180
mAEach output divide-by-2 10 15
I
CCVCO
+ I
CCRF
(Note 3) 75 95
Low-power sleep mode 1
PARAMETER CONDITIONS MIN TYP MAX UNITS
REFERENCE OSCILLATOR INPUT (REF_IN)
REF_IN Input Frequency Range 10 200 MHz
REF_IN Input Sensitivity 0.7 VCC_ VPP
REF_IN Input Capacitance 2 pF
REF_IN Input Current -60 +60 FA
PHASE DETECTOR
Phase Detector Frequency
Integer-N mode 105
MHz
Fractional-N mode 50