ADL5353 Просмотр технического описания (PDF) - Analog Devices

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ADL5353

2200 MHz to 2700 MHz Balanced Mixer, LO Buffer, IF Amplifier, and RF Balun

Analog Devices 

ADL5353

Table 7. Evaluation Board Configuration

Components Function

Description

C2, C6, C8, C18, Power

C19, C20, C21 supply

decoupling

Nominal supply decoupling consists of a 10 µF capacitor to

ground in parallel with a 10 pF capacitor to ground positioned

as close to the device as possible.

C1, C4, C5, Z1

RF input

interface

The input channels are ac-coupled through C1. C4 and C5

provide bypassing for the center taps of the RF input baluns.

T1, C17, L4, L5, IF output

R1, R24, R25

interface

C10, C12, R4

LO interface

R21

PWDN

interface

C22, L3, R9, R14, Bias control

R22, R23, VGS0,

VGS1

The open-collector IF output interfaces are biased through

pull-up choke inductors, L4 and L5. T1 is a 4:1 impedance

transformer used to provide a single-ended IF output interface,

with C17 providing center-tap bypassing. Remove R1 for

balanced output operation.

C10 and C12 provide ac coupling for the LO1_IN and LO2_IN

local oscillator inputs. LOSEL selects the appropriate LO input

for both mixer cores. R4 provides a pull-down to ensure that

LO1_IN is enabled when the LOSEL test point is logic low. LO2_IN

is enabled when LOSEL is pulled to logic high.

R21 pulls the PWDN logic low and enables the device. The

PWR_UP test point allows the PWDN interface to be exercised

using the external logic generator. Grounding the PWDN pin

for nominal operation is allowed. Using the PWDN pin when

supply voltages exceed 3.3 V is not allowed.

R22 and R23 form a voltage divider to provide 3 V for logic

control, bypassed to ground through C22. VGS0 and VGS1

jumpers provide programmability at the VGS0 and VGS1 pins.

It is recommended to pull these two pins to ground for

nominal operation. R9 sets the bias point for the internal LO

buffers. R14 sets the bias point for the internal IF amplifier.

Default Conditions

C2 = 10 µF (size 0603)

C6, C8, C20, C21 = 10 pF (size 0402)

C18, C19 = 100 pF (size 0402)

C1 = 1.5 pF (size 0402)

C4 = 10 pF (size 0402)

C5 = 0.01 µF (size 0402)

Z1 = 10 nH (size 0402)

T1 = TC4-1W+ (Mini-Circuits )

C17 = 150 pF (size 0402)

L4, L5 = 470 nH (size 1008)

R1, R24, R25 = 0 Ω (size 0402)

C10, C12 = 22 pF (size 0402)

R4 = 10 kΩ (size 0402)

R21 = 10 kΩ (size 0402)

C22 = 1 nF (size 0402)

L3 = 0 Ω (size 0603)

R9 = 1.1 k Ω (size 0402)

R14 = 910 Ω (size 0402)

R22 = 10 k Ω (size 0402)

R23 = 15 kΩ (size 0402)

VGS0 = VGS1 = 3-pin shunt

Rev. 0 | Page 20 of 24

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