DS3920T-002+ MAXIM [Maxim Integrated Products], DS3920T-002+ Datasheet

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DS3920T-002+

Manufacturer Part Number
DS3920T-002+
Description
Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
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.
The device accepts a +2.97V to +76V current mirror
supply voltage. Internal current limiting (2.9mA or 20mA,
typ) protects the monitored device from a short circuit to
ground. The provided internal clamp diode protects the
current mirror output from overvoltage. Additionally, the
device features thermal shutdown if the die temperature
reaches +150NC.
The device is available in a 6-pin SOT23 package, and
operates over the -40NC to +85NC extended temperature
range.
For related parts and recommended products to use with this part, refer to:
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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General Description
3.3V
DIODE
GND
CURRENT
MONITOR
MIROUT
I
MIROUT
SHUTDOWN
APD
THERMAL
CURRENT
LIMIT
R
499Ω
AGC
TIA
ROSA
I
MIROUT
DS3920
www.maxim-ic.com/DS3920.related
S Wide Voltage Input Range: 2.97V to 76V
S Current Monitor
S Current Clamp (2.9mA or 20mA, typ)
S Voltage Clamp Protects Subsequent Output Circuitry
S 6-Pin SOT23 (MAX4007 Compatible)
Ordering Information
/5
 Wide 250nA to 2mA Range
 5:1 Mirror Ratio
 Fast 50ns Time Constant
Avalanche Photodiode (APD) Biasing
PIN Photodiode Monitoring
GEPON, GPON, 10GEPON, XGPON: ONU and OLT
MIRIN
MIR I
Fast Current Mirror
Typical Application Circuit
MIROUT
/5
appears at end of data sheet.
APD BIAS
R
R
C
0.1 F
FILTER
OUT
FILTER
V
OUT
Applications
DS3920
19-5797; Rev 0; 3/11
Features

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DS3920T-002+ 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 ...

Page 2

... CONDITIONS V MIRIN 2.5mA MIRIN MIROUT 100FA +25NC 5mA +25NC DF A DS3920T-001 version I MIROUT DS3920T-002 version R (Note 1) AGC 1FA to 2.5mA K MIR I > 2.5mA MIROUT (Note MIRIN MIR MIR V = 30V or 60V (Notes 2, 3) MIRIN MIRIN t (Note ...

Page 3

A MIRIN CURRENT vs. MIRIN VOLTAGE 2.5mA MIROUT 1 0 1µA MIROUT 0. MIRIN CURRENT vs. TEMPERATURE 2.5mA MIROUT 1 0 1µA ...

Page 4

A TRANSIENT RESPONSE (V = 40V) MIRIN DS3920 toc07 A 40V MIRIN D.U.T MIR MIROUT B CH2 CH1 5kΩ 100kΩ 5kΩ 500ns/div A: CH1, 1V/div 375µA TO 7.5mA MIROUT A: CH2; 5V/div, ...

Page 5

A SHORT-CIRCUIT RESPONSE (V = 40V) MIRIN DS3920 toc12 T = +40° CH1 0A 20ms/div CH1 5mA/div MIROUT A: MIROUT SHORTS TO GND THROUGH 10Ω ...

Page 6

... PART DS3920T-001+ DS3920T-001+T DS3920T-002+ DS3920T-002+T +Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...

Page 7

REVISION REVISION NUMBER DATE 0 3/11 Initial release Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry ...

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