MAX2685EEE+T Maxim Integrated Products, MAX2685EEE+T Datasheet - Page 9

• Manufacturer Part Number: MAX2685EEE+T
• Description: RF Amplifier IC MIXER DOWN CONVERTER
• Manufacturer: Maxim Integrated Products
• Type: General Purpose Amplifierr

Specifications of MAX2685EEE+T

• Operating Frequency: 1000 MHz
• Noise Figure: 1.4 dB at 880 MHz
• Operating Supply Voltage: 3 V, 5 V
• Supply Current: 8.5 mA
• Maximum Power Dissipation: 667 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 1 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The LO port is the high-impedance input of the local-
oscillator buffer. It requires a series DC-blocking
capacitor and a shunt resistor to ground to set the input
impedance. See the Typical Operating Characteristics
for a graph of LO Port Return Loss vs. Frequency.
The mixer’s downconverted output appears on the dif-
ferential IFOUT+ and IFOUT- pins. The differential out-
put can be converted to a single-ended output, as
shown in the MAX2685 evaluation kit (EV kit). Refer to
the Detailed Description in the MAX2685 EV kit data
sheet.
Drive SHDN low to disable all device functions and
place the MAX2685 in low-power shutdown mode.
Drive SHDN high or connect it to V
device functions.
_______________________________________________________________________________________
Low-Cost, 900MHz, Low-Noise Amplifier
Local-Oscillator Input
IF Output Port
CC
to enable all
Shutdown
and Downconverter Mixer
TRANSISTOR COUNT: 295
A properly designed PC board is an essential part of
any RF/microwave circuit. Note the IC’s high-frequency
inputs and outputs, and be sure to decouple the DC
supply and control pins.
For power-supply traces and connections, a star topol-
ogy works well. Each V
own path to the central V
capacitor that provides a low impedance at the RF fre-
quency of interest. The central V
decoupling capacitor. This provides good isolation
between the different sections of the MAX2685.
Applications Information
CC
Layout Considerations
CC
Chip Information
node in the circuit has its
node and a decoupling
CC
also has a large
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