AD8341 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8341
Manufacturer

ADI
ChipWorker Part#

CW543103797
Description

RF Vector Modulator 1.5GHz - 2.4GHz
Documentation

Datasheet

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AD8341 Specifications

Attribute	Attribute Value

Part Number	AD8341
Manufacturer	ADI
ChipWorker Part#	CW543103797
Documentation	Datasheet
	expand all
Product Lifecycle Status	Recommended for New Designs

Product Description

Product Details
The AD8341 vector modulator performs arbitrary amplitude and phase modulation of an RF signal. Because the RF signal path is linear, the original modulation is preserved. This part can be used as a general-purpose RF modulator, a variable attenuator/phase shifter, or a remodulator. The amplitude can be controlled from a maximum of −4.5 dB to less than −34.5 dB, and the phase can be shifted continuously over the entire 360° range. For maximum gain, the AD8341 delivers an OP1dB of 8.5 dBm, an OIP3 of 17.5 dBm, and an output noise floor of −150.5 dBm/Hz, independent of phase. It operates over a frequency range of 1.5 GHz to 2.4 GHz.
The baseband inputs in Cartesian I and Q format control the amplitude and phase modulation imposed on the RF input signal. Both I and Q inputs are dc-coupled with a ±500 mV differential full-scale range. The maximum modulation bandwidth is 230 MHz, which can be reduced by adding external capacitors to limit the noise bandwidth on the control lines.
Both the RF inputs and outputs can be used differentially or single-ended and must be ac-coupled. The RF input and output impedances are nominally 50 Ω over the operating frequency range. The DSOP pin allows the output stage to be disabled quickly in order to protect subsequent stages from overdrive. The AD8341 operates off supply voltages from 4.75 V to 5.25 V while consuming approximately 125 mA.
The AD8341 is fabricated on Analog Devices’ proprietary, high performance 25 GHz SOI complementary bipolar IC process. It is available in a 24-lead, lead-free LFCSP package and operates over a −40°C to +85°C temperature range. Evaluation boards are available.
**Applications**
RF PA linearization/RF predistortion
Amplitude and phase modulation
Variable attenuators and phase shifters
CDMA2000, WCDMA, GSM/EDGE linear power amplifiers
Smart antennas
**Availability**
Samples part number AD8341ACP and an evaluation board, part number AD8341-EVAL, are available.
**Companion Products**
AD8302 \- LF - 2.7GHz RF/IF Gain Phase Detector
AD8340 \- RF Vector Modulator 700MHz to 1000MHz
**Other Modulator / Demodulator Products**
AD8345 \- 250MHz to 1000MHz Low Noise RF/IF Modulator
AD8346 \- 800MHz to 2.5GHz Lower Power Direct Up-Conversion Modulator
AD8347 \- 800MHz to 2.7GHz Direct Conversion Demodulator
AD8348 \- 50MHz to 1000MHz RF/IF Quadrature Demodulator
AD8349 \- 700MHz - 2.7GHz Low Noise Direct Up Conversion Modulator
### Features and Benefits
Cartesian amplitude and phase modulation
1.5 GHz to 2.4 GHz frequency range
Continuous magnitude control of −4.5 dB to −34.5 dB
Continuous phase control of 0° to 360°
Output third-order intercept 17.5 dBm
Output 1 dB compression point 8.5 dBm
Output noise floor −150.5 dBm/Hz at full gain
Adjustable modulation bandwidth up to 230 MHz
Fast output power disable
4.75 V to 5.25 V single-supply voltage

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