MAX9985ETX+ Maxim Integrated Products, MAX9985ETX+ Datasheet - Page 11

• Manufacturer Part Number: MAX9985ETX+
• Description: Up-Down Converters IC MIXER DOWN CONV DUAL
• Manufacturer: Maxim Integrated Products

Specifications of MAX9985ETX+

• Maximum Input Frequency: 1000 MHz
• Maximum Power Dissipation: 10800 mW
• Mounting Style: SMD/SMT
• Maximum Operating Frequency: 250 MHz
• Maximum Power Gain: 7.5 dB
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: TQFN-36 EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4, 6, 10, 16,
Dual, SiGe, High-Linearity, 700MHz to 1000MHz
3, 5, 7, 12,
20, 22, 24,
25, 26, 34
21, 30, 36
13, 14
18, 28
32, 33
PIN
11
15
17
19
23
27
29
31
35
—
1
2
8
9
Downconversion Mixer with LO Buffer/Switch
IFM-, IFM+
IFD+, IFD-
LOMBIAS
TAPMAIN
LODBIAS
IFMBIAS
RFMAIN
IFDBIAS
TAPDIV
LOSEL
LEXTM
LEXTD
NAME
RFDIV
GND
N.C.
V
LO1
LO2
______________________________________________________________________________________
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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 capacitors close to the pin.
Ground
Power Supply. Connect bypass capacitors as close to the pin as possible (see the Typical
Application Circuit).
Diversity Channel Balun Center Tap. Bypass to GND with capacitors close to the pin.
Diversity Channel RF Input. Internally matched to 50Ω. Requires an input DC-blocking capacitor.
IF Diversity Amplifier Bias Control. Connect a 1.07kΩ resistor from this pin to ground to set the bias
current for the diversity IF amplifier (see the Typical Operating Characteristics for typical performance
versus resistor value).
Diversity Mixer Differential IF Output. Connect pullup inductors from each of these pins to V
the Typical Application Circuit).
Connect a 30nH inductor from this pin to ground to increase the RF-to-IF and LO-to-IF isolation.
Connect this pin to ground if isolations can be degraded (see the Typical Operating Characteristics
for typical degradation).
LO Diversity Amplifier Bias Control. Connect a 1.1kΩ resistor from this pin to ground to set the bias
current for the diversity LO amplifier (see the Typical Operating Characteristics for typical
performance versus resistor value).
No Connection. Not internally connected.
Local Osci l l ator 1 Inp ut. Thi s i np ut i s i nter nal l y m atched to 50Ω . Req ui r es an i np ut D C - b l ocki ng cap aci tor .
Local Oscillator Select. Set this pin to high to select LO1. Set low to select LO2.
Local Osci l l ator 2 Inp ut. Thi s i np ut i s i nter nal l y m atched to 50Ω . Req ui r es an i np ut D C - b l ocki ng cap aci tor .
LO Main Amplifier Bias Control. Connect a 1.1kΩ resistor from this pin to ground to set the bias
current for the main LO amplifier (see the Typical Operating Characteristics for typical performance
versus resistor value).
Connect a 30nH inductor from this pin to ground to increase the RF-IF and LO-IF isolation. Connect
this pin to ground if isolations can be degraded (see the Typical Operating Characteristics for typical
degradation).
Main Mixer Differential IF Output. Connect pullup inductors from each of these pins to V
Typical Application Circuit).
IF M ai n Am p l i fi er Bi as C ontr ol . C onnect a 1.07kΩ r esi stor fr om thi s p i n to g r ound to set the b i as cur r ent for
the m ai n IF am p l i fi er ( see the Typ i cal O p er ati ng C har acter i sti cs for typ i cal p er for m ance vs. r esi stor val ue) .
Exposed Paddle. Solder the exposed paddle to the ground plane using multiple vias. This paddle
affects RF performance and provides heat dissipation.
FUNCTION
Pin Description
CC
(see the
CC
(see
11
11