ML5825

2.4GHz to 5.8GHz Frequency Translator

ADVANCED Datasheet

SEPTEMBER 2007

EDS-106038 REV A01

GENERAL DESCRIPTION

The ML5825 is a high integration 2.4GHz - 5.8GHz

frequency translator (transverter). It upconverts 2.4GHz

signals to 5.8GHz and downconverts received 5.8GHz

signals to 2.4GHz. Transmit and receive utilize the

same low noise fixed local oscillator (LO). It is intended

to be used in conjunction with a 2.4GHz transceiver-

based solution to quickly and easily develop a 5.8GHz

solution while fully leveraging previous development.

The ML5825 receive chain contains a Low Noise

Amplifier (LNA), bandpass filter and image reject down

conversion mixer. A digitally controlled 18dB gain step

in the receive chain provides an innovative solution for

optimizing IIP3 (low gain mode) and Noise Figure (high

gain mode). On the transmit side, the ML5825 buffers

and upconverts a differential 2.4GHz signal to 5.8GHz,

where it is filtered and amplified.

The ML5825’s PLL accepts two industry-standard input

clock frequencies. The ML5825’s low STANDBY MODE

current maximizes battery life. Power supply regulation

is included in the ML5825, providing circuit isolation

and consistent performance over supply voltages

between 2.8V-3.6V.

PIN CONFIGURATION

TXISET

TXIN

TXIP

VREG3

VBG2

VREG2

VTUNE

VSSLO

VMIX

VSSMX

RXON

RXOP

RFISET

RXGN

VCCA

FREF

* GROUND/RETURN ON EXPOSED PADDLE

PIN 1

*

ORDERING INFORMATION

PART NUMBER TEMP RANGE

PACKAGE

PACK (QTY)

ML5825DM

-10

ML5825DM-T

-10

FEATURES

High Integration 2.4GHz to 5.8GHz Transverter

Receive LNA, Image Reject Filter & Mixer

Transmit Pre-Driver, Filters & Mixers

Fully Integrated PLL-Based Synthesizer

Selectable Receive Gain Optimizes NF and IIP3

Interfaces Directly with Many 2.4GHz Transceivers

4dB (typ. High Gain Mode) Noise Figure

-14dBm Input IP3 (Low Gain Mode)

Selectable Transmit Output Power

10

μA Standby Mode

Space-saving 28 pin QFN package

APPLICATIONS

5.8GHz Digital Cordless Telephones

5.8GHz Streaming Audio & Video

Upconverted 2.4GHz Standards

o

Bluetooth

o

Zigbee/802.15.4

BLOCK DIAGRAM

FREF

TXO

TX Subsystem

RXI

RX Subsystem

RXON, RXOP

TXIN, TXIP

REFSEL

TXON

XCEN

Control

Logic

QPO VTUNE

2383-2508 MHz

5725-5850 MHz

2383-2508 MHz

5725-5850 MHz

GAIN

CONTROL

RXGN

TXISET

2

2

PLL

Supply

Regulation

& Voltage

Reference

VCCA

VBG1

VBG2

VREGn

RFISET

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