QPK1520

Octal GaN gate driver with programmable bias and sequencing

The QPK1520 is a high-speed, multi-channel GaN gate bias controller designed to provide precise, programmable gate control, sequencing, and temperature compensation for RF power amplifiers and low-noise amplifiers.

When used with the QPK1521 SPDT switch driver and QPK1522 drain controller, it forms a complete bias control chipset that enables fully coordinated gate, drain, and RF path switching in front-end modules and phased array systems. This chipset approach allows designers to implement sub-100 ns TX/RX switching, automated IDQ calibration, and safe bias sequencing, while significantly reducing the complexity and component count of traditional discrete bias networks.

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Key Features

8-channel programmable gate bias control (PA + LNA support)
Integrated DACs for independent VON/VOFF settings
High-speed TX/RX switching with programmable sequencing
I2C and SPI digital interface for flexible system control
Built-in temperature compensation for stable bias over environment
Supports IDQ calibration when paired with drain controller
±10 mA gate drive capability
Compact 5 x 5 mm package optimized for dense array designs
Integrated READY signal for safe bias operation
Lockout protection
Internal and external Fault protection

Typical Applications

AESA radar
Phased array systems
Electronic warfare
RF front-end modules (FEMs)

Parameters

Pulse Control Mode

Gate

Min Drain Switch Voltage (V)

N/A

Max Drain Switch Voltage (V)

N/A

External Switch FET Support

Negative Gate Regulator Bias Range (V)

-5

IDQ Auto Calibration

Yes (with QPK1522)

Automatic Power Sequencer

Yes

Negative Gate Voltage Generation

No (requires external VEE)

Package Type

LGA

Package Size (mm)

5.0 x 5.0

RoHS

Yes

Lead Free

Yes

Halogen Free

Yes

ITAR Restricted

ECCN

EAR99qpk

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