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Optical Controller/Monitors (for Temperature Compensation and Monitoring)



DATA SHEETS
Part Number Description Key Advantages
DS1877 SFP Controller for Dual Rx Interface

Eases Design of Low-Cost Media Converters and Optical Video Modules
DS1878 SFP+ Controller with Digital LDD Interface

Meets All SFF-8472 Control and Monitoring Requirements
DS1876 SFP Controller with Dual LDD Interface

Industry's First Dual Tx Controller for Video SFP Modules
DS1842A 76V, APD, Dual Output Current Monitor

APD Bias Output Stage and Fast Current Monitor on a Single Chip
DS1873 SFP+ Controller with Analog LDD Interface

Controls and Monitors All Functions for SFP and SFP+ Modules
DS1874 SFP+ Controller with Digital LDD Interface

Combination of DS1874 and MAX3798/MAX3799 Provides APC Loop, Current Control, and Complete SFF-8472 Functionality
DS1862A XFP Laser Control and Digital Diagnostic IC

Implements XFP MSA Requirements for Digital Diagnostics, Serial ID, and User Memory for Laser Control and Monitoring 10Gbps Optical Transceiver Modules (XFP)
DS1875 PON Triplexer and SFP Controller

Industry's Next-Generation PON/SFP Controller with APD Boost Converter for Fiber Optic Modules
DS1841 Temperature-Controlled, NV, I²C, Logarithmic Resistor

Industry's Only Temperature-Compensated Resistor Optimized for APD Bias in Fiber Optic Modules
DS1856 Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection

DS1862 XFP Laser Control and Digital Diagnostic IC

Implements XFP MSA Requirements for Digital Diagnostics, Serial ID, and User Memory for Laser Control and Monitoring 10Gbps Optical Transceiver Modules (XFP)
DS1859 Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors

New 20kΩ Option for Popular DS1859 SFP Optical Control/Monitor Provides Higher Control Resolution
DS1857 Dual Temperature-Controlled Resistors with External Temperature Input and Monitors




Key Specifications:

Digital Potentiometers
Part Number Taper POTs Control Interface Wiper Memory Steps REND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Smallest Available Pckg.
(mm2)
typ typ max max w/pins
DS1841  Log 1 I2C Non-Volatile 128 22 20 250 370 1 9.6
See All Digital Potentiometers (129)

Fiber Monitoring and Control
Part Number ADCs Resolution
(bits)
DACs/ Resistors FS Out
(kΩ)
Steps Temp. Sensor Memory VSUPPLY
(V)
Control Interface EV Kit
DS1878  5-Input Muxable 13 2 DACs None None Internal EEPROM 2.85 to 3.9 I2C No
DS1877  3-Input Muxable 13 2 DACs None None Internal 2.85 to 3.9 I2C No
DS1876  5-Input Muxable 13 4 DACs None None Internal 2.85 to 3.9 I2C No
DS1873  5-Input Muxable 13 4 DACs None None Internal 2.85 to 3.9 I2C No
DS1874  5-Input Muxable 13 2 DACs None None Internal 2.85 to 3.9 I2C No
DS1875  10-Input Muxable 13 4 DACs None 256 or 4096 Internal 2.85 to 3.9 I2C Yes
DS1862A  7-Input Muxable 16 1 DAC - - Internal
3.3
5
2-Wire
I2C
-
DS1862  7-Input Muxable 16 1 DAC - - Internal
3.3
5
2-Wire
I2C
-
DS1856  5-Input Muxable 12 2 Resistors
20kohms
50kohms
256 Internal
3.3
5
I2C Yes
DS1859  5-Input Muxable 12 2 Resistors
20kohms
50kohms
256 Internal
3.3
5
2-Wire Yes
DS1857  4-Input Muxable 12 2 Resistors 50kohms 256 External
3.3
5
2-Wire Yes
See All Fiber Monitoring and Control (19)

Fiber Photodiode Current Monitors
Part Number Photo Diode Appl. IDIODE IDIODE VBIAS
(V)
RoHS Available Package/Pins Smallest Available Pckg.
(mm2)
Oper. Temp.
(°C)
min max max max w/pins
DS1842A  APD 10µA 3.85mA 76 Yes
TDFN-EP/14
9.6 -40 to +85
See All Fiber Photodiode Current Monitors (7)





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