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DS3920T-001+T

更新时间： 2024-11-22 09:56:39

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美信 - MAXIM		/
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描述
Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry

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DS3920T-001+T 数据手册

19-5797; Rev 0; 3/11

DS3920

Fast Current Mirror

General Description

Features

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.

S Wide Voltage Input Range: 2.97V to 76V

S Current Monitor

 Wide 250nA to 2mA Range

 5:1 Mirror Ratio

 Fast 50ns Time Constant

S Current Clamp (2.9mA or 20mA, typ)

S Voltage Clamp Protects Subsequent Output Circuitry

S 6-Pin SOT23 (MAX4007 Compatible)

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.

Applications

Avalanche Photodiode (APD) Biasing

PIN Photodiode Monitoring

GEPON, GPON, 10GEPON, XGPON: ONU and OLT

The device is available in a 6-pin SOT23 package, and

operates over the -40NC to +85NC extended temperature

range.

Ordering Information appears at end of data sheet.

Typical Application Circuit

APD BIAS

FILTER

3.3V

MIRIN

DIODE

FILTER

0.1μF

CURRENT

MONITOR

MIROUT

THERMAL

SHUTDOWN

I /5

MIR MIROUT

GND

OUT

CURRENT

LIMIT

OUT

DS3920

MIROUT

AGC

499Ω

ROSA

APD

TIA

For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/DS3920.related

�� Maxim Integrated Products

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.

12 3 4 5 6 7

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DS3920T-001+T 替代型号

型号	品牌	替代类型	描述	数据表
DS3920T-001+	MAXIM	完全替代	Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry
DS3920T-002+	MAXIM	类似代替	Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry

与DS3920T-001+T相关器件

型号	品牌	获取价格	描述	数据表
DS3920T-002+	MAXIM	获取价格	Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry
DS3920T-002+T	MAXIM	获取价格	Fast Current Mirror Voltage Clamp Protects Subsequent Output Circuitry
DS3921	TTELEC	获取价格	Platon Plastic Tube VA Flow Meter Spares
DS3922	ADI	获取价格	High-Speed Current Mirror and Integrated FETs for DC-DC Controller
DS3930	MAXIM	获取价格	RELIABILITY REPORT FOR DS3930, REV A1
DS3930	DALLAS	获取价格	Hex Nonvolatile Potentiometer with I/O and Memory
DS3930	ADI	获取价格	六进制非易失电位器，带有输入/输出和存储器
DS3930E	DALLAS	获取价格	Hex Nonvolatile Potentiometer with I/O and Memory
DS3930E+	MAXIM	获取价格	Digital Potentiometer, 2 Func, 16500ohm, 2-wire Serial Control Interface, 256 Positions, P
DS3930E+T&R	MAXIM	获取价格	Digital Potentiometer, 2 Func, 16500ohm, 2-wire Serial Control Interface, 256 Positions, P

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