MAX19998AETP+ Maxim Integrated Products, MAX19998AETP+ Datasheet - Page 24

• Manufacturer Part Number: MAX19998AETP+
• Description: RF Mixer SiGe High-Linearity 2300MHz to 4500MHz D
• Manufacturer: Maxim Integrated Products

Specifications of MAX19998AETP+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer
24
4, 5, 10, 12,
3, 9, 13, 15
1, 6, 8, 14
18, 19
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PIN
17
11
16
20
—
2
7
LOBIAS
IF-, IF+
IFBIAS
NAME
LEXT
GND
GND
V
LO
RF
EP
CC
Power Supply. Bypass to GND with 0.01FF capacitors as close as possible to the pin.
Single-Ended 50I RF Input. Internally matched and DC shorted to GND through a balun. Provide an
input DC-blocking capacitor if required.
Ground. Not internally connected. Pins can be grounded.
Ground. Internally connected to the exposed pad. Connect all ground pins and the exposed pad
(EP) together.
LO Amplifier Bias Control. Output bias resistor for the LO buffer. Connect a 604I (5V, 230mA bias
condition) from LOBIAS to ground.
Local Oscillator Input. This input is internally matched to 50I. Requires an input DC-blocking capacitor.
External Inductor Connection. Connect a low-ESR 4.7nH inductor from this pin to ground to increase
the RF-to-IF and LO-to-IF isolation. Connect this pin directly to ground to reduce the component
count at the expense of reduced RF-to-IF and LO-to-IF isolation.
Mixer Differential IF Output. Connect pullup inductors from each of these pins to V
Application Circuit).
IF Amplifier Bias Control. IF bias resistor connection for the IF amplifier. Connect a 698I (5V, 230mA
bias condition) from IFBIAS to GND.
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.
TOP VIEW
GND
GND
GND
V
CC
RF
1
2
3
4
5
20
6
EP
19
7
Pin Configuration/Functional Diagram
18
8
MAX19998
17
9
FUNCTION
16
10
15
14
13
12
11
GND
V
GND
GND
LO
CC
Pin Description
CC
(see the Typical