Datasheet > AD8346EVAL

AD8346EVAL

更新时间： 2024-11-18 12:54:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	404K
描述
0.8 GHz to 2.5 GHz Quadrature Modulator

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中文翻译

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数据手册

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AD8346EVAL 数据手册

0.8 GHz to 2.5 GHz

Quadrature Modulator

AD8346

FEATURES

FUNCTIONAL BLOCK DIAGRAM

High accuracy

IBBP

IBBN

COM1

LOIN

QBBP

QBBN

COM4

VPS2

1 degree rms quadrature error @ 1.9 GHz

0.2 dB I/Q amplitude balance @ 1.9 GHz

Broad frequency range: 0.8 GHz to 2.5 GHz

Sideband suppression: −46 dBc @ 0.8 GHz

Sideband suppression: −36 dBc @ 1.9 GHz

Modulation bandwidth: dc to 70 MHz

0 dBm output compression level @ 0.8 GHz

Noise floor: −147 dBm/Hz

PHASE

SPLITTER

LOIP

VOUT

COM3

COM2

Single 2.7 V to 5.5 V supply

Quiescent operating current: 45 mA

Standby current: 1 μA

VPS1

ENBL

AD8346

BIAS

16-lead TSSOP

Figure 1.

APPLICATIONS

Digital and spread spectrum communication systems

Cellular/PCS/ISM transceivers

Wireless LAN/wireless local loop

QPSK/GMSK/QAM modulators

Single-sideband (SSB) modulators

Frequency synthesizers

Image reject mixer

GENERAL DESCRIPTION

The AD8346 is a silicon RFIC I/Q modulator for use from

0.8 GHz to 2.5 GHz. Its excellent phase accuracy and amplitude

balance allow high performance direct modulation to RF.

This quadrature modulator can be used as the transmit mod-

ulator in digital systems such as PCS, DCS, GSM, CDMA, and

ISM transceivers. The baseband quadrature inputs are directly

modulated by the LO signal to produce various QPSK and

QAM formats at the RF output.

The differential LO input is applied to a polyphase network

phase splitter that provides accurate phase quadrature from

0.8 GHz to 2.5 GHz. Buffer amplifiers are inserted between

two sections of the phase splitter to improve the signal-to-

noise ratio. The I and Q outputs of the phase splitter drive the

LO inputs of two Gilbert-cell mixers. Two differential V-to-I

converters connected to the baseband inputs provide the

baseband modulation signals for the mixers. The outputs of

the two mixers are summed together at an amplifier which is

designed to drive a 50 Ω load.

Additionally, this quadrature modulator can be used with direct

digital synthesizers in hybrid phase-locked loops to generate

signals over a wide frequency range with millihertz resolution.

The AD8346 comes in a 16-lead TSSOP package, measuring

6.5 mm × 5.1 mm × 1.1 mm. It is specified to operate over a

−40°C to +85°C temperature range and a 2.7 V to 5.5 V supply

voltage range. The device is fabricated on Analog Devices’ high

performance 25 GHz bipolar silicon process.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective companies.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与AD8346EVAL相关器件

型号	品牌	获取价格	描述	数据表
AD8346-EVAL	ADI	获取价格	0.8 GHz-2.5 GHz Quadrature Modulator
AD8347	ADI	获取价格	0.8 GHz-2.7 GHz Direct Conversion Quadrature Demodulator
AD8347ARU	ADI	获取价格	0.8 GHz-2.7 GHz Direct Conversion Quadrature Demodulator
AD8347ARU-REEL	ADI	获取价格	0.8 GHz-2.7 GHz Direct Conversion Quadrature Demodulator
AD8347ARU-REEL7	ADI	获取价格	0.8 GHz-2.7 GHz Direct Conversion Quadrature Demodulator
AD8347ARU-REEL7	ROCHESTER	获取价格	800 MHz - 2700 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR, MO-153AE, RU-28, TSSOP-28
AD8347ARUZ	ADI	获取价格	0.8 GHz to 2.7 GHz Direct Conversion
AD8347ARUZ	ROCHESTER	获取价格	800MHz - 2700MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR, MO-153AE, RU-28, TSSOP-28
AD8347ARUZ-REEL7	ADI	获取价格	0.8 GHz to 2.7 GHz Direct Conversion
AD8347ARUZ-REEL7	ROCHESTER	获取价格	800MHz - 2700MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR, MO-153AE, RU-28, TSSOP-28

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