MAX1932ETC+ by Analog Devices

Digitally Controlled, 0.5% Accurate, Safest APD Bias Supply

Status: Active
Series: MAX1932
RoHS: Unknown
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The MAX1932 generates a low-noise, high-voltage output to bias avalanche photodiodes (APDs) in optical receivers. Very low output ripple and noise is achieved by a constant-frequency, pulse-width modulated (PWM) boost topology combined with a unique architecture that maintains regulation with an optional RC or LC post filter inside its feedback loop. A precision reference and error amplifier maintain 0.5% output voltage accuracy. The MAX1932 protects expensive APDs against adverse operating conditions while providing optimal bias. Traditional boost converters measure switch current for protection, whereas the MAX1932 integrates accurate high-side current limiting to protect APDs under avalanche conditions. A current-limit flag allows easy calibration of the APD operating point by indicating the precise point of avalanche breakdown. The MAX1932 control scheme prevents output overshoot and undershoot to provide safe APD operation without data loss. The output voltage can be accurately set with either external resistors, an internal 8-bit DAC, an external DAC, or other voltage source. Output span and offset are independently settable with external resistors. This optimizes the utilization of DAC resolution for applications that may require limited output voltage range, such as 4.5V to 15V, 4.5V to 45V, 20V to 60V, or 40V to 90V.

Prices starting from US$5.92


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Logo for CoreStaff CoreStaff US$5.92
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Logo for Newark Electronics Newark Electronics US$9.13
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Logo for element14 element14 US$8.72
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Logo for Farnell Farnell US$8.18
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Features

Unique Architecture Delivers Excellent Accuracy for Improved System Performance 0.5% Accurate Output Low Ripple Output (< 1mV)
0.5% Accurate Output
Low Ripple Output (< 1mV)
Protection Features Guarantee Safe Operation Accurate High-Side Current Limit Avalanche Indicator Flag
Accurate High-Side Current Limit
Avalanche Indicator Flag
Output-Voltage Flexibility Facilitates Multiple Applications and Design Approaches 4.5V to 90V Output Set Output Voltage via 8-Bit SPI-Compatible Internal DAC, External DAC, or External Resistors
4.5V to 90V Output
Set Output Voltage via 8-Bit SPI-Compatible Internal DAC, External DAC, or External Resistors
Small Circuit Footprint Reduces Equipment Size 12-Pin, 4mm x 4mm Thin QFN Package Circuit Height < 2mm
12-Pin, 4mm x 4mm Thin QFN Package
Circuit Height < 2mm
Commonly Available 2.7V to 5.5V Input Voltage Range

Specifications

VIN (V) (min) 2.7
VIN (V) (max) 5.5
VOUT1 (V) (min) 4.5
VOUT1 (V) (max) 90
IOUT1 (A) (max) 0.01
Switch Type External
Output Adjust. Method DigitalResistorVoltage
IQ (mA) (typ) 0.5
Shutdown Mode Supply Current (µA) (typ) 25
Shutdown Mode Supply Current (µA) (max) 65
# DC-DC Outputs 1
Switching Frequency (kHz) 300
Package/Pins TQFN/12
BudgetaryPrice (See Notes) 5.84


MAX1932ETC+ Semiconductors - ICs by Analog Devices

DC/DC CONV BOOST 300KHZ TQFN-12

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

Specifications

Topology Boost (Step Up)
Input Voltage Min 2.7V
Input Voltage Max 5.5V
No. of Outputs 1Outputs
DC / DC Converter IC Case TQFN
No. of Pins 12Pins
Output Current 10mA
Output Voltage Min 4.5V
Output Voltage Max 90V
Switching Frequency 300kHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

SAFEST APD BIAS SUPPLY 0.5% TQFN12EP | RS
Dc/Dc Conv, Boost, 300Khz, Tqfn-12 | Newark Electronics
DC/DC CONV, BOOST, 300KHZ, TQFN-12 | element14

Frequently Asked Questions

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Is the MAX1932ETC+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX1932ETC+ have stock available?

Authorised distributors including RS, CoreStaff, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX1932ETC+ .

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