AD8345:  140 MHz to 1000 MHz Quadrature Modulator

The AD8345 is a silicon RFIC quadrature modulator, designed for use from 140 MHz to 1000 MHz. The part provides a very low noise floor and high output power supporting a significant improvement in ...More

AD8345:  140 MHz to 1000 MHz Quadrature Modulator

Product Description

The AD8345 is a silicon RFIC quadrature modulator, designed for use from 140 MHz to 1000 MHz. The part provides a very low noise floor and high output power supporting a significant improvement in output dynamic range. The AD8345 needs a low LO drive level and provides a fully specified 50 Ω buffered output.

The part provides excellent amplitude and phase balance and sideband suppression specifications to enable higher order/capacity QAM modulated radios.

Additionally the AD8345 has been tested and supports the requirements as an IF modulator within CDMA/GSM/W-CDMA cellular infrastructure equipment and as a direct conversion modulator for the 800 – 900 MHz cellular bands.

The AD8345 is supplied in 16-lead Thin Shrunk Small Outline (TSSOP) package with exposed paddle, and fully specified over –40°C to +85°C temperature range.

Availability Samples part number (AD8345ARE) and an evaluation board, part number (AD8345-EVAL) are available.

Other Modulator / Demodulator Products

AD8346 – 800 MHz to 2.5 GHz Lower Power Direct Up-Conversion Modulator

AD8347 – 800 MHz to 2.7 GHz Direct Conversion Demodulator

AD8349 – 700 MHz to 2.7 GHz Low Noise, Higher Output Drive, RF Modulator

Features

  • Output frequency range 140 MHz to 1000 MHz
  • I/Q baseband frequency range dc – 80 MHz output power +2.5 dBm P1 dB
  • Noise floor –155 dBm/Hz
  • Quadrature phase accuracy 0.5 deg rms
  • Amplitude balance 0.2 dB
  • Single 2.7 V – 5.5 V supply
  • Pin compatible with AD8346 / AD8349

Diagrams

AD8345 Diagram
Functional Block Diagram for AD8345

Specifications

Function Mod
RF Freq (MHz) 140 to 1000
IQ Freq (MHz) 80MHz
Phase Error (deg) 0.5Deg
Amplitude Error (dB) 0.2dB
Noise Floor (dBm/Hz) -155
Voltage Supply (V) 2.7 to 5.5
Supply Current (max) 65mA
Power Down Turn On/Off 2.5µs
Package 16-Lead Tssop

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AD630 Demod, Mod dc to 2 - - - - - +/- 15 5 20-Lead DIP $6.25
AD8333 Demod dc to 50 - 0.1 0.05 - -161 +/- 5 44 32-Lead LFCSP $9.06
AD8339 Demod dc to 50 50 1 0.25 - - 4.5 to 5.5 35 40-Lead LFCSP $12.09
AD8340 Vector Mod 700 to 1000 - - - - - 5 130 24-Lead LFCSP $7.59
AD8341 Vector Mod 1500 to 2400 - - - - -150.5 4.75 to 5.25 125 24-Lead LFCSP $7.59
AD8345 Mod 140 to 1000 80 0.5 0.2 - -155 2.7 to 5.5 65 16-Lead Tssop $5.02
AD8346 Mod 800 to 2500 70 1 0.2 - -147 2.7 to 5.5 45 16-Lead Tssop $4.45
AD8347 Demod 800 to 2700 65 1 0.3 69.5 - 2.7 to 5.5 64 28-Lead TSSOP $5.85
AD8348 Demod 50 to 1000 75 0.5 0.25 45 - 2.7 to 5.5 58 28-Lead TSSOP $5.01
AD8349 Mod 700 to 2700 160 0.3 0.1 - -156 5 135 16-Lead Tssop $5.02
ADL5370 Mod 250 to 1300 700 - - - -156 4.75 to 5.5 210 24-Lead LFCSP $5.04
ADL5371 Mod 700 to 1300 700 - - - -156 4.75 to 5.5 175 24-Lead LFCSP $5.04
ADL5372 Mod 1500 to 2500 700 - - - -158 4.75 to 5.5 175 24-Lead LFCSP $5.04
ADL5373 Mod 2300 to 3000 700 - - - -156