Analog Devices Inc. ADF4152HVBCPZ-RL7

Overview

ADF4152HVBCPZ-RL7 from Analog Devices is a 5.0 GHz high-voltage fractional-N/integer-N PLL frequency synthesizer with integrated 6 V to 30 V charge pump, programmable RF output divider (÷1/÷2/÷4/÷8/÷16), and 3-wire serial interface. It drives external wideband VCOs directly without op-amps and supports RF output frequencies down to 31.25 MHz. Used in microwave point-to-point radios and VSAT infrastructure.

For engineers reviewing the ADF4152HVBCPZ-RL7 datasheet, ADF4152HVBCPZ-RL7 pinout, ADF4152HVBCPZ-RL7 application, or ADF4152HVBCPZ-RL7 equivalent, key selection criteria include high-voltage charge pump operation (VP = 6–30 V), RF input bandwidth up to 5.0 GHz, programmable charge pump current (48–384 µA), dual-mode lock detection (analog/digital), and RF output mute control via PDBRF pin or register.

Technical Context

The ADF4152HVBCPZ-RL7 implements a third-order fractional interpolator for spurious suppression and supports both low-noise mode (−213 dBc/Hz normalized in-band phase noise floor) and low-spur mode (−203 dBc/Hz). Its phase frequency detector operates at up to 26 MHz and features a 4.2 ns antibacklash pulse to eliminate dead zones.

The device integrates a high-voltage charge pump fabricated on Analog Devices' proprietary HV process, enabling direct VCO tuning voltage generation up to 29 V. The RF output stage uses a programmable NPN differential pair with four selectable tail currents (−4 dBm to +5 dBm output power), and includes software- and pin-controllable RF mute (PDBRF).

Key Specifications

Pinout & Package

ADF4152HVBCPZ-RL7 is housed in a 32-lead LFCSP (5 mm × 5 mm, 0.5 mm pitch) with exposed pad requiring GND connection. Pin count and layout match CP-32-11 package per datasheet Table 5 and Figure 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PLL synthesizer applications.

Compared with ADF4153HVBCPZ-RL7, the ADF4152HVBCPZ-RL7 offers lower system cost in designs already supplying 3.3 V rails, while ADF4159BCPZ-RL7 trades high-voltage integration for extended frequency reach-making ADF4152HVBCPZ-RL7 optimal for cost-sensitive, high-voltage microwave infrastructure.

Availability

ADF4152HVBCPZ-RL7 is available at Aetrix Electronics and suitable for wireless infrastructure base stations, microwave point-to-point radios, and VSAT terminal transceivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADF4152HVBCPZ-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADF4152HV product line delivers high-voltage PLL synthesizers optimized for microwave radio, satellite communications, and test equipment where direct VCO tuning and low phase noise are critical design requirements.

FAQ

What is the maximum RF input frequency supported by the ADF4152HVBCPZ-RL7?

The ADF4152HVBCPZ-RL7 supports an RF input frequency of up to 5.0 GHz when the RF output buffer is disabled and input power is between −5 dBm and +5 dBm. With the RF output buffer enabled, the maximum input frequency drops to 3.5 GHz. These limits are specified in the datasheet Table 1 under "RF INPUT CHARACTERISTICS" and reflect the device's internal prescaler and divider architecture. Operation beyond these ranges is not guaranteed.

How does the high-voltage charge pump in the ADF4152HVBCPZ-RL7 improve phase noise performance?

The ADF4152HVBCPZ-RL7's high-voltage charge pump (6–30 V) eliminates the need for op-amp–based active loop filters, which introduce additional noise and distortion. Passive filter topologies driven directly by the ADF4152HVBCPZ-RL7's charge pump preserve the −213 dBc/Hz normalized in-band phase noise floor in low-noise mode, whereas active filters typically degrade this metric by 2–5 dB. This is confirmed in Figure 6 of the datasheet comparing ADF4152HVBCPZ-RL7 against ADF4156 with OP27-based active filtering.

Can the ADF4152HVBCPZ-RL7 generate output frequencies below 1 GHz?

Yes, the ADF4152HVBCPZ-RL7 can generate RF output frequencies as low as 31.25 MHz using its programmable output divider (÷1/÷2/÷4/÷8/÷16). For example, a 500 MHz VCO input divided by 16 yields 31.25 MHz at RFOUT±. This capability is explicitly stated in the General Description section and verified in Table 1 under "RF OUTPUT CHARACTERISTICS." The divider is applied after the VCO input stage and is fully programmable via register settings.

What is the function of the PDBRF pin on the ADF4152HVBCPZ-RL7?

The PDBRF (Pin 21) on the ADF4152HVBCPZ-RL7 is the RF power-down control terminal. A logic-low signal mutes both RFOUT+ and RFOUT− outputs, reducing residual RF power to −37 dBm at 2 GHz. This function is also software-controllable via the mute-till-lock-detect (MTLD) bit in Register 4. The dual control method allows hardware-triggered muting during frequency sweeps and register-based muting for synchronized system-level power management.

Does the ADF4152HVBCPZ-RL7 support both fractional-N and integer-N synthesis modes?

Yes, the ADF4152HVBCPZ-RL7 supports both modes. Fractional-N operation uses INT, FRAC, and MOD registers to achieve fine frequency resolution (e.g., sub-Hz steps), while integer-N mode is activated by setting FRAC = 0 and DB8 (LDF) = 1 in Register 2. The datasheet confirms this in the "Integer N Mode" subsection of Theory of Operation (Page 11) and specifies identical PFD frequency limits (up to 26 MHz) for both modes.