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Series Information for AD8346ARUZ - Analog Devices


  • feature
    High accuracy 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: u221246 dBc @ 0.8 GHz Sideband suppression: u221236 dBc @ 1.9 GHz Modulation bandwidth: dc to 70 MHz 0 dBm output compression level @ 0.8 GHz Noise floor: u2212147 dBm/Hz Single 2.7 V to 5.5 V supply Quiescent operating current: 45 mA Standby current: 1 u03bcA 16-lead TSSOP



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. 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. 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. 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.


Frequency Min:
Frequency Max:
Supply Voltage Min:
Supply Voltage Max:
RF IC Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (07-Jul-2017)
RF Type:

Alternate Descriptions

Newark Electronics
RF MODULATOR, 800MHZ-2.5GHZ, TSSOP-16; Frequency Min:800MHz; Frequency Max:2.5GHz; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; RF IC Case Style:TSSOP; No. of Pins:16Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes