Datasheet

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MAX2042A
SiGe High-Linearity, 1600MHz to 3900MHz
Upconversion/Downconversion Mixer with LO Buffer
Pin Description
Pin Configuration
PIN NAME FUNCTION
1, 6, 8,14 V
CC
Power Supply. Bypass to GND with 0.01FF capacitors as close as possible to the pin.
2 RF
Single-Ended 50I RF Input. Internally matched and DC shorted to GND through a balun. Provide a
DC-blocking capacitor if required. Capacitor also provides some RF match tuning.
3, 4, 5, 10,
12, 13, 17
GND
Ground. Internally connected to the exposed pad. Connect all ground pins and the exposed pad
(EP) together.
7 LOBIAS
LO Amplifier Bias Control. Output bias resistor for the LO buffer. Connect a 698I Q1% resistor
(nomi nal bias condition) from LOBIAS to ground. The maximum current seen by this resistor is 3mA.
9, 15 GND Ground. Not internally connected. Ground these pins or leave unconnected.
11 LO
Local Oscillator Input. This input is internally matched to 50I. Requires an input DC-blocking
capacitor. Capacitor also provides some LO match tuning.
16, 20 GND Ground. Connect all ground pins and the exposed pad (EP) together.
18, 19 IF-, IF+ Mixer Differential IF Output/Input
— EP
Exposed Pad. Internally connected to GND. Solder this exposed pad to a PCB pad that uses
multiple ground vias to provide heat transfer out of the device into the PCB ground planes. These
multiple via grounds are also required to achieve the noted RF performance (see the Layout
Considerations section).
MAX2042A
TQFN
5mm x 5mm
TOP VIEW
19
20
+
18
17
7
6
8
RF
GND GND
9
V
CC
V
CC
GND LO GND
12
IF-
45
15 14 12 11
IF+
GND
GND
V
CC
LOBIAS
V
CC
GND
GND
3
13
GND
16
10
GND
GND