Linear Technology DC426B Operator's manual

1 of 10

DC426B DEMO BOARD QUICK START GUIDE

Description:

The DC426B demo circuit board is intended to demonstrate the capabilities of the LT5511 high

signal level upconverting mixer IC for 1900MHz infrastructure applications.

The LT5511 mixer IC is designed to meet the high linearity requirements of cable TV

infrastructure downstream transmitters and wireless infrastructure transmit systems. The IC

includes a differential LO buffer amplifier driving a double-balanced mixer. The LO, RF and IF

ports can be easily matched to a broad range of frequencies for different applications. The high

performance capability of the LO buffer allows the use of a single-ended source, thus eliminating

the need for an LO balun.

The LT5511 mixer delivers +17dBm typical input 3rd order intercept at 950MHz, and +15.5dBm

IIP3 at 1900MHz, with IF input signal levels of –5dBm. The input 1dB compression point is

typically +6dBm.

The DC426B demo board is optimized to upconvert a 50MHz IF input to 1900MHz RF output

with the LO injected from the high-side at 1950MHz.

Figure 1. LT5511 IC Block Diagram

BUFFER

LO- LO+

IF-

IF+

GND

VCCBIAS

BIAS

8 9

RF-

RF+

GND

(BACKSIDE)

GND

VCCLO

2 of 10

LT5511 Upconverting Mixer Single-Tone Measurements for 1900MHz Band.

1. Connect all test equipment as shown in Figure 2.

2. Set the Power Supply output voltage to 5V, and set the current limit to 100mA.

3. Set the dipswitch SW1 (Enable) to 1. Mixer is in ENABLE mode.

4. Set the Signal Generator #1 to provide a 1950MHz, -10dBm, CW signal to the demo board

LOin port.

5. Set the Signal Generator #2 to provide a 50MHz, -5dBm, CW signal to the demo board IFin

port.

6. Set the Spectrum Analyzer’s center frequency to 1900MHz. Perform mixer conversion gain,

and 1dB compression measurements.

7. Set the Spectrum Analyzer’s center frequency to 1950MHz. Perform mixer LO to RF

suppression measurement.

8. Set the Spectrum Analyzer’s center frequency to 1850MHz and 2050MHz. Perform input 2nd

order distortion measurement. (IIP2 = 2 * P1 – P2 – Gc, where P1 is the power level of the

desired output at 1900MHz, P2 is the largest 2nd order product at either 1850MHz or

2050MHz, and Gc is conversion gain. P1 and P2 are in units of dBm, and Gc is in dB.)

POWER SUPPLY

SPECTRUM

ANALYZER

SIGNAL

GENERATOR 2

SIGNAL

GENERATOR 1

Figure 2. Test Set-Up for Mixer Single-Tone Measurements

3 of 10

LT5511 Upconverting Mixer Two-Tone Measurements for 1900MHz Band.

1. Connect all test equipment as shown in Figure 3.

Note: 1). A high quality combiner that provides 50-ohm termination on all ports and has

good port-to-port isolation should be used.

2). The two 3dB attenuators on the inputs of the combiner are used to further improve

source isolation.

2. Set the Power Supply output voltage to 5V, and set the current limit to 100mA.

3. Set the dipswitch SW1 (Enable) to 1. Mixer is in ENABLE mode.

4. Set the Signal Generator #1 to provide a 1950MHz, -10dBm, CW signal to the demo board

LOin port.

5. Set the Signal Generator #2 and #3 to provide two -5dBm CW signals to the demo board IFin

port—one at 50MHz, and the other at 51MHz.

6. Set the Spectrum Analyzer’s center frequency to 1899.5MHz. Perform input 3rd order

distortion measurement. (IIP3 = P1 + (P1 – P3) / 2 – Gc, where P1 is the lowest power level

of the two desired output tones at either 1899MHz or 1900MHz, P3 is the largest 3rd order

product at either 1898MHz or 1901MHz, and Gc is conversion gain. P1 and P3 are in units

of dBm, and Gc is in dB.)

Figure 3. Test Set-Up for Mixer Two-Tone Measurements

POWER SUPPLY

SPECTRUM

ANALYZER

SIGNAL

GENERATOR 1

SIGNAL

GENERATOR 3

∑

SIGNAL

GENERATOR 2

3dB PAD 3dB PAD

4 of 10

5 of 10

6 of 10

APPROVED VENDOR LIST

VENDOR PHONE NUMBER PART TYPE WEBSITE ADDRESS

AAC (was TAD) (800) 508-1521 CHIP RESISTORS

AAC (was TAD) (714) 255-9186

AAVID (714) 556-2665 HEAT SINKS

ALLEN BRADLEY (800) 592-4888 CARBON RESISTORS

AMP (717) 564-0100 PC MOUNT BNC

APEM (718) 246-1007 SMD TOGGLE/PB SWITCH

API DELEVAN (716) 652-3600 INDUCTORS

AVX (843) 946-0362 CHIP CAPS

AVX (843) 946-0524 CHIP RESISTORS

AVX (207) 282-5111 TANTALUM CAPS

AVX (843) 946-0323 HIGH VOLTAGE CAPS

BERG (800) 237-2374 CONNECTORS

BH ELECTRONICS (952) 894-9590 INDUCTORS

BI TECHNOLOGIES (714) 447-2656 TRANSFORMERS

BI TECHNOLOGIES (714) 447-2345 RES./RES. NETWORKS

BOURNS (801) 750-7253 POTENTIOMETERS, SIPS

CADDOCK ELECTRONICS (541) 496-0700 HIPO. RES., SIPS, DIPS

CENTRAL SEMI (631) 435-1110 SMALL SIGNAL DISCRETES

CHICAGO MINIAT. LAMP (201) 489-8989 LEDS

COILCRAFT (847) 639-6400 INDUCTORS

COMM CON (626) 301-4200 HEADERS, SHUNTS

CONNEX (805) 378-6464 BNC CONNECTORS

COOPER ELECT. TECH. (561) 752-5000 INDUCTORS

CORNELL DUBILIER (508) 996-8561 CAPACITORS

CTS (219) 293-7511 RESISTOR ARRAYS

CUI-STACK (503) 643-4899 POWER CONNECTORS

DALE (see Vishay) (605) 665-1627 INDUCTORS

DALE (see Vishay) (605) 665-9301 SENSE RESISTORS

DATA DISPLAY PRODUCT (800) 421-6815 LEDS

DIODES INC. (805) 446-4800 DIODES

ELECTRONIC CONCEPTS (908) 542-7880 400V FILM CAPACITORS

EPSON (310) 787-6300 CRYSTALS

FAIRCHILD (207) 775-4502 LOGIC

FAIRCHILD (408) 822-2126 MOSFETS

FAIRCHILD (888) 522-5372 CRG (CUST. RESPONSE)

FCI (717) 767-8005 HOT PLUG CONNECTORS

FUKUSHIMA (818) 765-8300 MPC RESISTORS

FUJI (201) 712-0555 SCHOTTKY DIODES

GENERAL

SEMICONDUCTOR (516) 847-3000 DIODES

GOWANDA (716) 532-2234 INDUCTORS

GRAYHILL (708) 354-1040 DIP SWITCHES

HARRIS (800) 442-7747 LOGIC

HEWLETT PACKARD (800) 235-0312 IR LED

7 of 10

HITACHI (408) 433-1990 RF POWER AMPS

IDT (408) 727-6116 LOGIC IC

IR (310) 322-3331 MOSFETS

IRC (361) 992-7900 SENSE RESISTORS

ITW PAKTRON (708) 667-3444 CAPACITORS

JOHNSON COMPONENTS (650) 948-6533 RF CONNECTORS

JOHNSON COMPONENTS (760) 434-5961 RF CONNECTORS

KEMET (408) 986-0424 TANTALUM CAPS

KEMET (864) 963-6300 CRG (CUST. RESPONSE)

KETEMA (714) 630-0081 SURGE SUPPRESSORS

KEYSTONE (718) 956-8900 JACKS, TURRETS

LITEON (408) 241-4588 LEDS, DIODES

LTC (408) 432-1900 HIGH PERF. I.C.S

MAGNETICS (800) 245-3984 TOROID CORES ETC.

MARCON (847) 696-2000 HIGH C/V CAPACITORS

METHODE (800) 323-6864 ZIF SOCKETS

MF ELECTRONICS (914) 576-6570 CRYSTAL OSCILLATORS

MICROCHIP (602) 786-7200 MICROCONTROLLER IC

MICRO PLASTICS (870) 453-8861 NYLON STANDOFFS

MICRO-SEMI (617) 926-0404 DIODES

MIDCOM (605) 886-4385 INDUCTORS

MIDCOM (800) 643-2661 INDUCTORS

MILL-MAX (516) 922-6000 TURRETS

MINICIRCUITS (718) 934-4500 RF TRANSFORMERS

MOTOROLA (800) 441-2447 LOGIC, REGS

MURATA ELECTRONICS (770) 436-1300 CAPS., INDUCTORS,

MURATA ELECTRONICS (800) 831-9172 CRG (CUST. RESPONSE)

MURATA ELECTRONICS (770) 433-5789 RF DEVICES

NEC/TOKIN (510) 324-4110 INDUCTORS/HI C/V CAPS

NICHIA (408) 573-0933 WHITE LEDS

NICHICON (847) 843-7500

ELECTROLYTIC

CAPACITOR

ON SEMICONDUCTOR (602) 244-6600 DISCRETE DIODES ETC.

ON SHORE (602) 921-3000 TERMINATORS

PANASONIC (714) 373-7334 INDUCTORS, POLY CAPS

PANASONIC (201) 348-5217 LEDS

PANASONIC (201) 373-7334 SWITCHES

PERICOM (408) 435-0800 LOGIC IC

PHILIPS (914) 246-2811 INDUCTORS

PHILIPS (914) 247-2036 PLANAR INDUCTORS

PHILIPS (508) 851-2200 DISCRETES, I.C.s

PULSE (619) 674-8100 INDUCTORS

QT OPTOELECTRONICS (408) 720-1440 RF SWITCH

RAYCHEM (800) 227-4856 FUSES

RG ALLEN (818) 765-8300 METAL OXIDE RESISTORS

RF MICRO DEVICES (336) 664-1233 RF2138 / RF2140

SAMTEC (800) 726-8329 WIRE JUMPERS

SANYO (619) 661-6835 OSCON CAPS

8 of 10

SCHOTT (507) 532-3201 INDUCTORS, XFORMERS

SCHURTER (707) 778-6311 FUSES AND HOLDERS

SIGNATRON (909) 464-1883 DB9 CONNECTORS

SIEMENS (108) 257-7910 OPTO

SILICONIX (800) 554-5565 MOSFETS

SILICONIX (408) 988-8000 MOSFETS

SPRAGUE (207) 324-4140 CAPACITORS

SULLINS (760) 744-0125 HEADERS, SHUNTS

SUMIDA (847) 956-0667 INDUCTORS

SUMIDA (408) 982-9660 INDUCTORS

TAIYO YUDEN (408) 573-4150 CHIP CAPS / RES.

TAIYO YUDEN (800) 348-2496 CRG (CUST. RESPONSE)

TEKTRONIX (800) 835-9433 SCOPE PROBE SOCKETS

TEMIC (408) 970-5700 IR PHOTO DIODE

THERMALLOY (972) 243-4321 HEAT SINKS

THIN FILM TECHNOLOGY (507) 625-8445

THIN FILM CHIP

RESISTORS

TOCOS (847) 884-6664 SMD POTENTIOMETERS

TOKIN (NEC) (510) 324-4110 CAPS., INDUCTORS,

TOKO (847) 699-3430 RF PRODUCTS

TOSHIBA (714) 455-2000 SINGLE GATE LOGIC

TOSHIBA (949) 455-2000 LOGIC

UNITED CHEMICON (847) 696-2000

ELECTROLYTIC

CAPACITOR

VISHAY (605) 665-9301

ZENER/SM. SIGNAL

DIODES

VISHAY (605) 665-9301 INDUCTORS, SENSE Rs

VITRAMON (203) 268-6261

CERAMIC CHIP

CAPACITOR

WIMA (914) 347-2474 PAPER/FILM CAPACITORS

ZETEX (631) 366-5068 SMALL SIGNAL DISCRETES

ZIERICK (800) 882-8020 STAKED PINS

9 of 10

10 of 10

Other Linear Technology Motherboard manuals

Linear Technology

Linear Technology LT3015 User manual

Linear Technology

Linear Technology DC1678A Quick setup guide

Linear Technology

Linear Technology DC1670A User manual

Linear Technology

Linear Technology DC1705C Quick setup guide

Linear Technology

Linear Technology DC2077A Quick setup guide

Linear Technology

Linear Technology 749 User manual

Linear Technology

Linear Technology DC980A User manual

Linear Technology

Linear Technology Demo Circuit 1402A User manual

Linear Technology

Linear Technology 868 User manual

Linear Technology

Linear Technology DC1562B Quick setup guide

Linear Technology

Linear Technology DC1989A-C Quick setup guide

Linear Technology

Linear Technology LTC2107 Quick setup guide

Linear Technology

Linear Technology DC1540B Quick setup guide

Linear Technology

Linear Technology DC2226A Quick setup guide

Linear Technology

Linear Technology DC1552A Quick setup guide

Linear Technology

Linear Technology DC2194A Quick setup guide

Linear Technology

Linear Technology LTC3773EG User manual

Linear Technology

Linear Technology DC2565A Quick setup guide

Linear Technology

Linear Technology DC1444A User manual

Linear Technology

Linear Technology DC1464A User manual

Linear Technology

Linear Technology DC1496B Quick setup guide

Linear Technology

Linear Technology DC1794A Quick setup guide

Linear Technology

Linear Technology DC1755A Quick setup guide

Linear Technology

Linear Technology DC2196A Quick setup guide

Popular Motherboard manuals by other brands

DFI

DFI SD170 user manual

ASROCK

ASROCK ROMED8-2T user manual

Asus

Asus P2L97A user manual

Winmate

Winmate IC70 user manual

Asus

Asus MES-B user manual

Grantech

Grantech SYS8F377VGGA-3OMN user manual

Telit Wireless Solutions

Telit Wireless Solutions SL869-3DR user guide

Gigabyte

Gigabyte GA-9IVDT user manual

Texas Instruments

Texas Instruments ADS8372EVM user guide

Commell

Commell MS-C73 user manual

IBT Technologies

IBT Technologies MB860 user manual

Nvidia

Nvidia TEGRA DG-04927-001_V01 user guide

Biostar

Biostar M7VIT Bravo Description

Intel

Intel D33217CK specification

Asus

Asus F1A55-M LX PLUS R2.0 user manual

EPC

EPC EPC9147C quick start guide

Asus

Asus EX-B760M-V5 D4 quick start guide

EPOX

EPOX MU-8KHA0010 user manual