DS3922T+ by Analog Devices

High-Speed Current Mirror and Integrated FETs for DC-DC Controller

Status: Active
Series: DS3922
RoHS: Unknown
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The DS3922 high-speed current mirror integrates high-voltage devices necessary for monitoring the burst mode receive power signal in avalanche photodiode (APD) biasing and OLT applications. The device has two small and one large gain current mirror outputs to monitor the APD current. An adjustable current clamp limits current through the APD. The clamp also features an external shutdown. An integrated FET is also provided that can be used to quickly clamp the high-voltage bias to ground in the case of high optical input power. Integrated low-voltage FET circuits can be used to create buck, boost, and inverting DC-DC converters for efficient laser bias and EML bias applications. The DS3922 is available in a 24-pin TQFN package and operates over an extended -40°C to +95°C temperature range.

Prices starting from US$3.96


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$4.65
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Logo for element14 element14 US$4.09
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Features

Accurate Burst-Mode RSSI Measurement with Two Current Mirror Outputs Improves Dynamic Range -32dBm to -5dBm Optical Input Range ±0.5dB Accuracy Sampling Period as Short as 300ns Pin Discharge Option
-32dBm to -5dBm Optical Input Range
±0.5dB Accuracy
Sampling Period as Short as 300ns
Pin Discharge Option
Low-Noise APD Bias with Shutdown Options Reduces Receiver Sensitivity 15V to 76V APD Bias External Capacitor Connection for Controlled RC Time Constant of APD Voltage Filter Current Clamp with Adjustable Limit and External Shutdown with Limit Status High-Voltage Switch FET for APD Fast Shutdown
15V to 76V APD Bias
External Capacitor Connection for Controlled RC Time Constant of APD Voltage Filter
Current Clamp with Adjustable Limit and External Shutdown with Limit Status
High-Voltage Switch FET for APD Fast Shutdown
Supports Additional DC-DC Functions Low-Voltage Synchronous Buck FETs for Efficient DFB Bias Low-Voltage pMOSFET for Generating Negative Bias Voltage for EMLs
Low-Voltage Synchronous Buck FETs for Efficient DFB Bias
Low-Voltage pMOSFET for Generating Negative Bias Voltage for EMLs
Small Package Reduces Total Solution Size and Cost 3.5mm x 3.5mm, 24-Pin TQFN Package with Exposed Pad
3.5mm x 3.5mm, 24-Pin TQFN Package with Exposed Pad

Specifications

Photo Diode Appl. APD
IDIODE (min) 10µA
IDIODE (max) 3.3mA
VBIAS (V) (max) 76
ICC (µA) (typ) 1000
Package/Pins TQFN/24
Oper. Temp. (°C) -40 to +95
BudgetaryPrice (See Notes) 2.64


DS3922T+ Special Function by Analog Devices

CURRENT MIRROR FET 0.5DBM TQFN-24

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

IC Function Current Mirror
Supply Voltage Min 2.85V
Supply Voltage Max 3.63V
IC Package Type TQFN
No. of Pins 24Pins
Operating Temperature Min -40°C
Operating Temperature Max 95°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Current Mirror, 95 Deg C, Tqfn-24 | Newark Electronics
CURRENT MIRROR, FET, 0.5DBM, TQFN-24 | element14

Frequently Asked Questions

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Is the DS3922T+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS3922T+ have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for DS3922T+ .

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