MAX19985AETX+ Maxim Integrated Products, MAX19985AETX+ Datasheet - Page 18

• Manufacturer Part Number: MAX19985AETX+
• Description: RF Mixer IC MIXER DOWNCONV earity, 700MHz to 10
• Manufacturer: Maxim Integrated Products

Specifications of MAX19985AETX+

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

Dual, SiGe, High-Linearity, 700MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
18
3, 5, 7, 12, 20, 22,
4, 6, 10, 16, 21,
24, 25, 26, 34
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30, 36
13, 14
18, 28
32, 33
PIN
11
15
17
19
23
27
29
31
35
—
1
2
8
9
IFM-, IFM+
IFD+, IFD-
TAPMAIN
LODBIAS
LOMBIAS
IFMBIAS
RFMAIN
IFDBIAS
TAPDIV
LEXTM
LEXTD
LOSEL
NAME
RFDIV
GND
N.C.
V
LO1
LO2
EP
CC
Main Channel RF input. Internally matched to 50Ω. Requires an input DC-blocking
capacitor.
Main Channel Balun Center Tap. Bypass to GND with 39pF and 0.033µF capacitors as
close as possible to the pin with the smaller value capacitor closer to the part.
Ground
Power Supply. Bypass to GND with 0.01µF capacitors as close as possible to the pin. Pins
4 and 6 do not require bypass capacitors.
Diversity Channel Balun Center Tap. Bypass to GND with 39pF and 0.033µF capacitors as
close as possible to the pin with the smaller value capacitor closer to the part.
Diversity Channel RF Input. Internally matched to 50Ω. Requires an input DC-blocking
capacitor.
IF Diversity Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias
current for the diversity IF amplifier (see the Typical Operating Characteristics for typical
performance vs. resistor value).
Diversity Mixer Differential IF Outputs. Connect pullup inductors from each of these pins to
V
Diversity External Inductor Connection. Connect a parallel combination of an inductor and
a 500Ω resistor from this pin to ground to increase the RF-to-IF and LO-to-IF isolation (see
the Typical Operating Characteristics for typical performance vs. inductor value).
LO Diversity Amplifier Bias Control. Connect a resistor from this pin to ground to set the
bias current for the diversity LO amplifier (see the Typical Operating Characteristics for
typical performance vs. resistor value).
No Connection. Not internally connected.
Local Oscillator 1 Input. This input is internally matched to 50Ω. Requires an input DC-
blocking capacitor.
Local Oscillator Select. Set this pin to high to select LO1. Set to low to select LO2.
Local Oscillator 2 Input. This input is internally matched to 50Ω. Requires an input DC-
blocking capacitor.
LO Main Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias
current for the main LO amplifier (see the Typical Operating Characteristics for typical
performance vs. resistor value).
Main External Inductor Connection. Connect a parallel combination of an inductor and a
500Ω resistor from this pin to ground to increase the RF-to-IF and LO-to-IF isolation (see
Typical Operating Characteristics for typical performance vs. inductor value).
Main Mixer Differential IF Outputs. Connect pullup inductors from each of these pins to V
(see the Typical Application Circuit).
IF Main Amplifier Bias Control. Connect a resistor from this pin to ground to set the bias
current for the main IF amplifier (see the Typical Operating Characteristics for typical
performance vs. resistor value).
Exposed Pad. Internally connected to GND. Connect to a large ground plane using
multiple vias to maximize thermal and RF performance.
CC
(see the Typical Application Circuit).
FUNCTION
Pin Description
CC