MAX1932ETC+T

MAX1932ETC+T is a digitally controlled, 0.5% accurate, safest APD bias supply. The MAX1932 generates a low-noise, high-voltage output to bias avalanche photodiodes (APDs) in optical receivers. Very low output ripple and noise is achieved by a constant-frequency, pulse-width modulated (PWM) boost topology combined with a unique architecture that maintains regulation with an optional RC or LC post filter inside its feedback loop. A precision reference and error amplifier maintain 0.5% output voltage accuracy. It protects expensive APDs against adverse operating conditions while providing optimal bias. The output voltage can be accurately set with either external resistors, an internal 8bit DAC, an external DAC, or other voltage source. Output span and offset are independently settable with external resistors. Typical applications are optical receivers and modules, fibre optic network equipment, telecom equipment, laser range finders, PIN diode bias supply.

• Unique architecture delivers excellent accuracy for improved system performance
• 0.5% accurate output, low ripple output (<lt/> 1mV)
• Protection features guarantee safe operation
• Accurate high-side current limit, avalanche indicator flag
• Output-voltage flexibility facilitates multiple applications and design approaches
• 12 thin QFN package
• Temperature range from -40°C to 85°C
• Input supply range from 2.7 to 5.5V
• Operating supply current is 0.5mA typical
• Switching frequency is 300KHz typical

警告

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

附註

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party