DS3920 Maxim, DS3920 Datasheet
DS3920
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DS3920 Summary of contents
Page 1
... General Description The DS3920 precision current mirror is designed for ava- lanche photodiode (APD) and PIN photodiode biasing and monitoring applications. The device offers a current clamp to limit current through the APD and a current mir- ror output that produces a signal proportional (5:1) to the APD current. A diode is also provided to limit the voltage at the current mirror output ...
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... SYMBOL CONDITIONS V MIRIN 2.5mA MIRIN MIROUT 100FA +25NC 5mA +25NC DF A DS3920T-001 version MIROUT DS3920T-002 version (Note 1) AGC 1FA to 2.5mA K MIR I > 2.5mA MIROUT (Note 2) ( MIRIN MIR MIR / 30V or 60V (Notes 2, 3) ...
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... V = 40V MIRIN 10 1 0.1 0.01 0.001 0.01 0 (mA) MIROUT GAIN ERROR vs. MIROUT CURRENT 40V MIRIN 0.001 0.01 0 (mA) MIROUT GAIN ERROR vs. MIRIN VOLTAGE 2.0 1.5 1.0 0 1µA MIROUT I = 2.5mA 0 MIROUT I = 5mA -0.5 MIROUT -1 10mA -1.5 MIROUT -2 (V) MIRIN DS3920 ...
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... CH1: 20V/div CH2: 20V/div STARTUP DELAY ( 2.5mA) MIRIN MIROUT DS3920 toc11 5V CH1 MIRIN D.U.T MIR MIROUT CH2 R2 R1 5kΩ 1.7kΩ 200µs/div CH1: 2V/div CH2: 2V/div DS3920 = 2.5mA) MIROUT DS3920 toc09 40V CH1 MIRIN D.U.T MIR MIROUT CH2 R2 R1 5kΩ 15.6kΩ ...
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... A: MIROUT SHORTS TO GND THROUGH 10Ω B: CURRENT LIMIT ACTIVE C: THERMAL SHUTDOWN D: POST COOL-DOWN REENTRY E: THERMAL SHUTDOWN F: POST COOL-DOWN REENTRY PIN 1 6 MIRIN N. MIROUT 5 6 Fast Current Mirror VOLTAGE DROP vs. MIROUT CURRENT DS3920 toc13 1 2.97V MIRIN 1 -40° +25°C A 0.6 0.4 0 +85°C ...
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... Detailed Description The DS3920 provides a fast, precision current mirror for photodiode-monitoring applications. The current mirror is accurate across a large dynamic range. The mirror response time is fast enough to comply with GPON Rx burst-mode monitoring requirements. The device has a built-in current limiting feature to protect photodiodes from large signal inputs, and an included thermal shut- down ...
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... Maxim Integrated Products © DESCRIPTION MIROUT = +25°C test conditions and R resistor values to the Typical Application Circuit OUT Maxim is a registered trademark of Maxim Integrated Products, Inc. DS3920 Fast Current Mirror Revision History PAGES CHANGED values for -002 version from — 1 ...