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參數(shù)資料
| 型號： | DS3920T-002+T |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 1204K |
| 描述： | IC CURRENT MIRROR 5:1 SOT23-6 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 功能： | 電流鏡像 |
| 輸入電壓： | 2.97 V ~ 76 V |
| 電流 - 輸出： | 4.4mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-6 |
| 包裝： | 帶卷 (TR) |
DS3920
Fast Current Mirror
Typical Application Circuit
19-5797; Rev 2; 12/11
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.
The device accepts a +2.97V to +76V current mirror
supply voltage. Internal current limiting (4.4mA 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.
Features
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 (4.4mA or 20mA, typ)
S Voltage Clamp Protects Subsequent Output Circuitry
S 6-Pin SOT23 (MAX4007 Compatible)
Applications
Avalanche Photodiode (APD) Biasing
PIN Photodiode Monitoring
GEPON, GPON, 10GEPON, XGPON: ONU and OLT
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/DS3920.related
DS3920
I
MIROUT
I
MIROUT
/5
THERMAL
SHUTDOWN
CURRENT
MONITOR
CURRENT
LIMIT
MIROUT
MIRIN
DIODE
3.3V
APD BIAS
MIR
I
MIROUT
/5
APD
ROSA
GND
V
OUT
R
AGC
499&
C
FILTER
0.1F
R
OUT
1k&5k&
R
FILTER
100&1000&
TIA
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com.
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