Text version of the page

SUMMIT

MICROELECTRONICS, Inc.

SMP9210, -11, -12

Dual 10-Bit Nonvolatile DAC

FEATURES INTRODUCTION

Two 10-Bit Nonvolatile DACs The SMP9210, -11, -12 family consists of serial input,voltage output, dual 10-bit (1024 steps) digital-to-analog converters. The devices will recall any Dac output voltage on power up and can operate from a single +2.7V to +5.5V supply. The maximum output Temperature Coefficient (Tc) of ±25ppm/ 1024 Steps Each DAC, Guaranteed Monotonic Excellent Temperature Stability ±25ppm/
o C Max Industrial Temperature Range -40
o C to +85
o C Automatic Power-On Recall
C make them ideal for high accuracy andtemperature stable calibration purposes. Internal precision buffers swing rail-to-rail with an input reference range from ground to the positive supply.The parts integrate two 10-bit DACs and their associatedcircuits: an enhanced unity gain operational output ampli- fier, a 10-bit volatile data latch, a 10-bit nonvolatile data register and the I No "Power-On Slew Rate" Requirement Parallel or Independent Operation of DACs Programmable Power Down Mode (Short DACOutputs to GND or Float DAC Outputs) I
2 C Serial Bus Interface Low Noise DAC Output Amplifiers 2.7V to 5.5V Operation, Small SSOP PackageAPPLICATIONS
2 C compatible 2-wire serial interface.The SMP9210 has a Chip Select input to enable/disablecommunication with the device, the SMP9211 has a Mute input to turn the outputs off and the SMP9212 has a reference voltage output.Programming of the configuration, control and calibrationvalues by the user is simplified with the interface adapter and Windows GUI software obtainable from Summit Micro-electronics. ATE Set and Forget Calibration Laser Diode Bias/Modulation Current Adjustment RF Power Amplifier Biasing Power Supply Trimming/Margining Potentiometer Replacement

SIMPLIFIED APPLICATIONS DRAWING

I 2 C 3.3V MONITORDIODE VCCAPC MDIMOD IN+IN– APCSETMODMON Differential Data Input
Laser Driver IBIAS GNDMODSETBIASSET VOUT1 VOUT1 VOUT2 CAPC1nF RFILT RDAMPLASERDIODE SMP9210 SMP9210
2048 SAD Figure 1 - Laser Diode Modulation and Bias Current Adjustments
Note: This is an applications example only. Some pins, components and values are not shown. ©SUMMIT MICROELECTRONICS, Inc., 2005 • 1717 Fox Drive, San Jose, CA 95131 • Phone 408-436-9890 • FAX 408-436-9897 • www.summitmicro.com Characteristics subject to change without notice2048 3.6 02/28/05 1