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ADF4112BCPZ
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Product Detailed Parameters
- Description：IC CLK/FREQ SYNTH 20LFCSP
- Series：-
- Package：Tray
- Mfr：Analog Devices Inc.
- PLL：Yes
- Input：CMOS, TTL
- Output：Clock
- Number of Circuits：1
- Ratio - Input:Output：2:01
- Differential - Input:Output：Yes/No
- Frequency - Max：3GHz
- Divider/Multiplier：Yes/No
- Voltage - Supply：2.7V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-WFQFN Exposed Pad, CSP
- Supplier Device Package：20-LFCSP (4x4)
- Type：Clock/Frequency Synthesizer (RF)
- Grade：-
- Qualification：-
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Overview
The ADF4112BCPZ is an RF PLL frequency synthesizer from Analog Devices, designed for local oscillator implementation in wireless transceivers. It features a low-noise digital phase-frequency detector, precision charge pump, and programmable dual-modulus prescaler (8/9, 16/17, 32/33, or 64/65). The device operates with a power supply ranging from 2.7 V to 5.5 V and supports a maximum RF input frequency of 3.0 GHz. Key specifications include a typical operating current of 6.5 mA at 5 V, a programmable charge pump current up to 5 mA, and a reference input frequency range of 5 MHz to 104 MHz.
Feature Summary
- RF Input Frequency: 0.2 GHz to 3.0 GHz
- Power Supply Range: 2.7 V to 5.5 V
- Programmable Dual-Modulus Prescaler: 8/9, 16/17, 32/33, 64/65
- Charge Pump Current: Programmable up to 5 mA typ
Applications
- Base stations for wireless radio (GSM, PCS, DCS, CDMA, WCDMA)
- Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
- Communications test equipment
Procurement Notes
Verify the specific suffix against the manufacturer's ordering guide to confirm package type and tape/reel quantity. Confirm RoHS compliance status as indicated in the official documentation. Ensure the B version temperature range (-40°C to +85°C) matches the application requirements before procurement.
Selection Notes
Select the ADF4112BCPZ when the required RF output frequency extends up to 3.0 GHz. Consider the separate charge pump supply (VP) pin if extended tuning voltage is needed in 3 V systems. Verify that the prescaler value selection keeps the divided frequency below the maximum allowable CMOS counter frequency.
Part Context
The ADF4112BCPZ belongs to the ADF4110 family of integer-N frequency synthesizers. This family shares a common architecture including a 24-bit input register, R/A/B counters, and a phase-frequency detector. The 'B' designation indicates the industrial temperature grade (-40°C to +85°C), while 'CPZ' denotes the LFCSP package.
Replacement Considerations
ADF4110BCPZ (550 MHz max RF), ADF4111BCPZ (1.2 GHz max RF), ADF4113BCPZ (4.0 GHz max RF). These parts share identical pinouts and control interfaces but differ in maximum RF input frequency capabilities.
