Catalog
1.0 GHz DGA with 30 dB Range and 1 dB Step Size
Key Features
• Digitally controlled VGA
• 1 dB gain step size
• 2 dB to 32 dB gain range
• 100 Ω differential input resistance
• 10 Ω differential output resistance
• Noise figure: 5.1 dB at 300 MHz, 5 V supply, and maximum gain
• OIP3 at maximum gain
• 39.4 dBm at 300 MHz at 5 V supply
• 38.1 dBm at 700 MHz at 5 V supply
• Gain step accuracy: ±0.2 dB
• −3 dB bandwidth at 32 dB: 1.0 GHz typical at 5 V supply
• Multiple control interface options
• Parallel 5-bit control interface with latch
• 3- and 4-wire SPI with fast attack
• Gain step-up and step-down interface
• Wide input dynamic range
• Power-down control
• Single 3.3 V or 5 V supply operation
• 112 mA quiescent current at 5 V supply
• 20-lead, 4 mm × 4 mm LFCSP
Description
AI
The ADL5206 is a wide bandwidth, variable gain amplifier (VGA) with digital control (also known as a digital gain amplifier (DGA)) that provides precise gain control, high output third-order intercept (OIP3), and low noise figure over the entire gain range. The excellent OIP3 performance of 39.4 dBm (at 300MHz, 5 V supply, and maximum gain) makes the ADL5206 an excellent gain control device for a variety of receiver applications.For wide input dynamic range applications, the ADL5206 provides a broad 2 dB to 32 dB gain range with a 1 dB step size. The gain is adjustable through multiple gain control and interface options: parallel, serial peripheral interface (SPI), or gain step-up and step-down controls.The ADL5206 can be powered up independently by applying the appropriate logic level to the PWUP pin. The quiescent current of the ADL5206 is typically 112 mA with a 5 V supply. When disabled, the ADL5206 consumes only 8 mA and offers excellent input to output isolation. The gain setting is preserved when the device is disabled.Fabricated on the Analog Devices, Inc., high speed, silicon germanium (SiGe), bipolar complementary metal-oxide semiconductor (BiCMOS) process, the ADL5206 provides precise gain adjustment capabilities with good distortion performance. The ADL5206 amplifier comes in a compact, thermally enhanced, 4 mm × 4 mm, 20-lead LFCSP and operates over the temperature range of −40°C to +85°C.Note that throughout the data sheet, multifunction pins, such as CS/GS1/D3, are referred to by the entire pin name or by a single function of the pin.APPLICATIONSDifferential ADC driversHigh intermediate frequency (IF) sampling receiversHigh output power IF amplificationDOCSIS FDx upstream amplifierInstrumentation