ADRF6720-27 Wideband (400 MHz TO 3 GHz) Quadrature Modulator with Integrated PLL/VCOs and 2.68 V Input Bias

The ADRF6720-27 is a wideband quadrature modulator with an integrated synthesizer ideally suited for 3G and 4G communication systems. The ADRF6720-27 consists of a high linearity broadband modulator, an integrated fractional-N phase-locked loop (PLL), and four low phase noise multicore voltage controlled oscillators (VCOs).

The ADRF6720-27 local oscillator (LO) signal can be generated internally via the on-chip integer-N and fractional-N synthesizers, or externally via a high frequency, low phase noise LO signal. The internal integrated synthesizer enables LO coverage from 356.25 MHz to 2855 MHz using the multicore VCOs. In the case of internal LO generation or external LO input, quadrature signals are generated with a divide by 2 phase splitter. When the ADRF6720-27 is operated with an external 1 × LO input, a polyphase filter generates the quadrature inputs to the mixer.

The ADRF6720-27 offers digital programmability for carrier feedthrough optimization, sideband suppression, HD3/IP3 optimization, and high-side or low-side LO injection.

The ADRF6720-27 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, RoHS-compliant, 6 mm × 6 mm LFCSP package with an exposed pad. Performance is specified over the −40°C to +85°C temperature range.

Applications

2G/3G/4G/LTE broadband communication systems
Microwave point-to-point radios
Satellite modems
Military/aerospace
Instrumentation

Features and Benefits

I/Q modulator with integrated fractional-N PLL

RF output frequency range: 400 MHz to 3000 MHz

Internal LO frequency range: 356.25 MHz to 2855 MHz

Output P1dB: 10.8 dBm at 2140 MHz

Output IP3: 31.1 dBm at 2140 MHz

Carrier feedthrough: −44.3 dBm at 2140 MHz

Sideband suppression: −40.8 dBc at 2140 MHz

Noise floor: −159.5 dBm/Hz at 2140 MHz

Baseband 1 dB modulation bandwidth: >1000 MHz

Baseband input bias level: 2.68 V

Power supply: 3.3 V/425 mA

Integrated RF tunable balun allowing single-ended RF output

Multicore integrated VCOs

HD3/IP3 optimization

Sideband suppression and carrier feedthrough optimization

High-side/low-side LO injection

Programmable via 3-wire serial port interface (SPI)

40-lead 6 mm × 6 mm LFCSP

RF & Microwave

I/Q Modulators with Integrated LO

S-Parameters

ADRF6720-27 S-Parameters .ZIP

Data Sheets

Document	note
ADRF6720-27: Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs (Rev. B)	PDF 2.77 M

User Guides

Document	note
UG-742: Evaluating the ADRF6720-27 Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs	PDF 470.92 K

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADRF6720-27ACPZ-R7 Production	40 ld LFCSP (6x6mm w/4.4mm pad)	REEL 750	-40 to 85C	0	7.95	Y

Evaluation Boards

Part Number	Description	Price	RoHS
ADRF6720-27-EVALZ	Evaluation Board	200	Y

ADRF6720-27: Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs (Rev. B) adrf6720-27

ADRF6720-27 S-Parameters adrf6720-27

UG-742: Evaluating the ADRF6720-27 Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs adrf6720-27