DS3920T-001+ Maxim Integrated Products, DS3920T-001+ Datasheet

DS3920T-001+

Manufacturer Part Number

DS3920T-001+

Description

Current & Power Monitors & Regulators Fast APD Bias

Manufacturer

Maxim Integrated Products

Datasheets

1.DS3920T-001.pdf (7 pages)

2.DS3920T-001.pdf (7 pages)

Specifications of DS3920T-001+

Lead Free Status / Rohs Status

Details

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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.

�� Maxim Integrated Products 1

General Description

3.3V

DIODE

GND

CURRENT

MONITOR

MIROUT

SHUTDOWN

APD

THERMAL

CURRENT

LIMIT

499Ω

AGC

TIA

ROSA

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

 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

appears at end of data sheet.

APD BIAS

0.1 F

FILTER

OUT

FILTER

OUT

Applications

DS3920

19-5797; Rev 0; 3/11

Features

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