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| NJW5210 8bit 3ch D/A Converter s GENERAL DESCRIPTION The NJW5210 is 8bit 3ch D/A converter for electronic adjustment. 3ch DC out put can be independently controlled by three-wire serial interface. The NJW5210 features low operating voltage(2.7V) and can be full-swing outputted regardless of supply voltage. s PACKAGE OUTLINE The small package(TVSP8) is suitable for portable applications. s FEATURES q Low Operating Voltage 2.7 to 5.5V q 8bit 3ch D/A Converters Adopting R-2R System q 3-wire 10-bit Serial Interface q Internal POWER ON RESET Circuit q Bi-CMOS Technology q Package Outline TVSP8 NJW5210RB1 s BLOCK DIAGLAM and PIN DIAGRAM AO1 1 R-2R DAC R-2R DAC R-2R DAC 8bitREG +DEC 8bitREG +DEC 8bitREG +DEC Power on Reset Serial Interface 8 LD AO2 2 7 CLK AO3 3 6 D1 V+ 4 5 GND Pin No. 1 2 3 4 5 6 7 8 Pin Name AO1 AO AO + IN/OUT OUT OUT OUT Function Analog Output Analog Output Analog Output V+ GND Serial Data Input Serial CLK Input Serial Load Input Ver.1 -1- NJW5210 s ABOSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER Supply Voltage Terminal Voltage Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL + V Vin PD Topr Tstg RATING -0.3 to 7.0 + -0.3 to V 300 -40 to +85 -40 to +150 UNIT V V mW C C s RECOMMENDED OPERATING CONDITION (Ta=25C) PARAMETER Operating Voltage Analog Output Source Current Analog Output Sink Current Serial Clock Frequency Limit Road Capacitance SYMBOL Vopr IOL IOH FSCLK CL + TEST CONDITION MIN. 2.7 - TYP. 1.0 - MAX. 5.5 1.0 1.0 0.1 UNIT V mA mA MHz F s ELECTRICAL CHARACTERISTICS ( V =3.0V, RL=OPEN, CL=0pF, Ta=25C) PARAMETER Operating Current V Maximum output voltage V Input code 02H to FDH Input code 02H to FDH bit LSB LSB s POWER ON RESET PARAMETER V supply voltage rise time Power on reset voltage + SYMBOL trVcc VPOR TEST CONDITION V+=02.7V MIN. 10 - TYP. 1.9 MAX. - UNIT ms V Ver.1 -2- NJW5210 s Condition of operating timing PARAMETER CLK L level pulse width CLK H level pulse width DI setup time DI hold time LD setup time LD hold time LD "H" level pulse width Analog output delay time voltage SYMBOL tCLKL tCLKH tSDI tHDI tSLD tHLD tLDH tOUT TEST CONDITION MIN. 200 200 30 60 200 100 100 TYP. MAX. 300 UNIT ns ns ns ns ns ns ns A CL=50pF, RL=10k tCLKL tCLKH 0.8V+ 0.2V+ CLK DI tSDI LD tHDI 0.8Vcc 0.2Vcc tLD tSL tHL 0.8V+ 0.2V+ OUTPUT 0.8V+ 0.2V+ tOU *A signal level is judged at 80% or 20% of V + Ver.1 -3- NJW5210 s Command sending Control command is 3wire 10bit serial interface.(MSB first) Data is taken in with rise edge og the CLK and output data is fixed in the LD high section. Data is maintained in the LD low section. LSB(LAST) Data set D0 D1 D2 D3 D4 D5 D6 D7 MSB(FIRST) Channel select D8 D9 Data Set D0 0 1 0 1 0 : 0 1 D1 0 0 1 1 0 : 1 1 D2 0 0 0 0 1 : 1 1 D3 0 0 0 0 0 : 1 1 D4 0 0 0 0 0 : 1 1 D5 0 0 0 0 0 : 1 1 D6 0 0 0 0 0 : 1 1 D7 0 0 0 0 0 1 1 Analog output voltage level GND + (V -GND)/256x1 + (V -GND)/256x2 + (V -GND)/256x3 + (V -GND)/256x4 : + (V -GND)/256x254 + (V -GND)/256x255 Channel select D8 0 1 0 1 D9 0 0 1 1 Address select AO1 AO2 AO3 Don't care [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.1 -4- |
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