ADF4212L

PRODUCTION

ADF4212L

Dual Power PLL Frequency Synthesizer

PRODUCTION

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Features

I_DD total, 7.5 mA
Bandwidth RF/IF, 2.4 GHz/1.0 GHz
2.7 V to 3.3 V power supply
Separate V_P allows extended tuning voltage
Programmable dual modulus prescaler RF and IF: 8/9, 16/17, 32/33, 64/65
Programmable charge pump currents
3-wire serial interface
Analog and digital lock detect
Fastlock mode
Power-down mode
20-lead TSSOP and 20-lead LFCSP packages

Additional Details

The ADF4212L is a dual frequency synthesizer that can be used to implement local oscillators (LO) in the up-conversion and down-conversion sections of wireless receivers and transmitters. It can provide the LO for both the RF and IF sections. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider, programmable A and B counters, and a dual modulus prescaler (P/P + 1). The A (6-bit) and B (12-bit) counters, in conjunction with the dual modulus prescaler (P/P + 1), implement an N divider (N = BP + A). In addition, the 15-bit reference counter (R Counter), allows selectable REF_IN frequencies at the PFD input. A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with external loop filters and voltage controlled oscillators (VCOs).

Control of all the on-chip registers is via a simple 3-wire interface with 1.8 V compatibility. The devices operate with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use.

Applications

Wireless handsets (GSM, PCS, DCS, DSC1800, CDMA, WCDMA)
Base stations for wireless Radio (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANS
Cable TV tuners (CATV)
Communications test equipment

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Ask a Question

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Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

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Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Documentation

Technical Documents 4

ADF4212L: Dual Low Power PLL Frequency Synthesizer Data Sheet (Rev.E) 11/11/2002

AN-30: Ask the Applications Engineer - PLL Synthesizers 12/06/2004

AN-873: Lock Detect on the ADF4xxx Family of PLL Synthesizers (Rev.0) 12/06/2006

FAQ 03/03/2022

Reference Materials 6

RF, Microwave, and Millimeter Wave Product Selection Guide 07/13/2018

Phase-Locked Loops for High-Frequency Receivers and Transmitters - Part 3 07/01/1999

Phase-Locked Loops for High-Frequency Receivers and Transmitters - Part 1 03/01/1999

Phase-Locked Loops for High-Frequency Receivers and Transmitters - Part 2 05/01/1999

Fundamentals of Frequency Synthesis, Part 2: Direct Digital Synthesis (DDS) 04/10/2017

Fundamentals of Frequency Synthesis, Part 1: Phased Locked Loops 04/10/2017

Software & Part Ecosystem

Companion Parts 10

Parts	Product Life Cycle	Description
Frequency Dividers, Prescalers, and Counters1
ADF5001	PRODUCTION	4 GHz TO 18 GHz Divide-by-4 Prescaler
I/Q Demodulators1
ADL5380	RECOMMENDED FOR NEW DESIGNS	400 MHz TO 6000 MHz Quadrature Demodulator
I/Q Modulators1
ADL5375	PRODUCTION	400 MHz TO 6 GHz Broadband Quadrature Modulator
Internal Power Switch Boost Regulators1
ADP1613	PRODUCTION	650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 2.0 A Current Limit
Positive Linear Regulators (LDO)3
ADP151	PRODUCTION	Ultralow Noise, 200 mA, CMOS Linear Regulator
ADP150	PRODUCTION	Ultralow Noise, 150 mA CMOS Linear Regulator
ADP3334	NOT RECOMMENDED FOR NEW DESIGNS	High Accuracy Low I_Q, 500 mA anyCAP^® Adjustable Low Dropout Regulator
Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C)1
OP184	PRODUCTION	Single-Supply Rail-to-Rail Input/Output Operational Amplifier
Single, Double, and Triple Balanced Mixers2
ADL5801	RECOMMENDED FOR NEW DESIGNS	High IP3, 10 MHz TO 6 GHz, Active Mixer
ADL5802	RECOMMENDED FOR NEW DESIGNS	Dual Channel High IP3 100 MHz TO 6 GHz Active Mixer

Tools & Simulations

ADIsimPLL™

ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.

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ADIsimRF

ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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