RF2411TR7 RFMD, RF2411TR7 Datasheet

RF2411TR7

Manufacturer Part Number

RF2411TR7

Description

IC AMP/MIXER LOW-NOISE 14-SOIC

Manufacturer

RFMD

Datasheet

1.RF2411TR7.pdf (4 pages)

Specifications of RF2411TR7

Rf Type

UHF

Frequency

500MHz ~ 1.9GHz

Number Of Mixers

Gain

25dB

Noise Figure

3.4dB

Current - Supply

8.5mA

Voltage - Supply

3 V ~ 6.5 V

Package / Case

14-SOIC (0.154", 3.90mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Secondary Attributes

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

RF2411TR7

Manufacturer:

RFMD

Quantity:

5 000

Current page: 1 of 4
Download datasheet (84Kb)

Communication receivers are constructed using a

superheterodyne architecture. The received signal fre-

quency is converted to a lower “intermediate” fre-

quency (IF) in one or more steps for efficient

amplification, filtering, and detection. The first down-

converter circuit is often the primary determinant of

overall receiver performance. This circuit typically con-

sists of a band-limiting preselector filter (which may

actually be the receive path of a duplexer), a low-noise

amplifier (LNA), an image filter, a mixer, and a local

oscillator.

The RF2411 is a monolithic integrated circuit UHF

receiver downconverter which implements all of the RF

functions of the required circuitry except passive filters

and local oscillator in a 14-lead small outline plastic

package. The block diagram of the device is included in

Figure 1. It is suitable for general application in the

500MHz to 1900MHz frequency range, at power sup-

ply voltages from 3V to 6V. Its high level of perfor-

mance with a minimum of external components is a

direct result of the advanced heterojunction bipolar

transistor (HBT) IC process used. Broadband imped-

ance matching at the RF ports and flexible IF interface

simplify application to many receiver systems.

The LNA achieves broadband impedance match to

50Ω and low noise figure through internal feedback cir-

cuitry, not by use of external components. Input return

loss is greater than 20dB and output return loss is

greater than 10dB over the entire 1MHz to 1500MHz

range. LNA gain slopes from 17dB at 1MHz to 11dB at

Figure 1: RF2411 Functional Block Diagram

IF OUT+

IF OUT-

LNA IN

GND

MIXER

RF AMP

LNA

LNA OUT

VCC1

VCC2

RF IN-

RF IN+

LO IN

TA0026

The RF2411 General Purpose UHF Downconverter IC

1500MHz, as plotted in Figure 2. LNA reverse isolation

is high over a the full frequency range, decreasing from

24dB at 1MHz to 21dB at 1500MHz. Noise figure is

low and almost flat, increasing from 1.7dB at 500MHz

to 2.4dB at 1500MHz, as plotted in Figure 3.

There is a dependence of LNA noise figure, gain, and

IIP3 on power supply voltage at 880MHz. Gain can be

seen to decrease from 14.6dB to 11.8dB as V

reduced from 5V to 2.5V. IIP3 decreases from

-1.75dBm to -11.6dBm, and noise figure decreases

slightly from 1.88dB to 1.7dB over the same supply

voltage range.

Figure 3: Noise Figure vs. Frequency

Figure 2: LNA Gain and Reverse Isolation vs.

Frequency

2.5

1.5

0.5

500

600

700

800

Frequency (MHz)

RF2411 LNA Noise Figure

900

1000

Vcc = 5V

1100

TA0026

1200

1300

1400

1500

15-121

Related parts for RF2411TR7

RF2411TR7 Summary of contents

Page 1

Communication receivers are constructed using a superheterodyne architecture. The received signal fre- quency is converted to a lower “intermediate” fre- quency (IF) in one or more steps for efficient amplification, filtering, and detection. The first down- converter circuit is often ...

Page 2

TA0026 The excellent broadband impedance match insures optimum duplexer and image filter performance. In addition, the wideband gain, noise and isolation char- acteristics guarantee simple application to many UHF receiver systems. The RF2411 mixer is a double-balanced “Gilbert” type with ...

Page 3

LO drive levels between -7dBm and -4dBm. A typical application is diagrammed in Figure 6. Similar 100 pF LNA MIXER UT ...

Page 4

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