8 BIT 4-CHANNEL D/A CONVERTER MB86022

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<strong>MB86022</strong> SETTING OF ANALOG OUTPUT VOLTAGE Data Analog Output Voltage D(A) D7 D6 D5 D4 D3 D2 D1 D0 VR1=Open VR2=Open (No external VR input) VR1=V 1 VR2=Open (External VR1 input) VR1=V 1 VR2=V 2 (External VR input) 255 1 1 1 1 1 1 1 1 ____ 383 x VDD 512 _________ 2xV 1 –V DD x 127 + ____ V DD 256 2 ______ V 1 –V 2 128 x 127 + V 2 254 1 1 1 1 1 1 1 0 ____ 382 512 x V DD _________ 2xV 1 –V DD x 126 + ____ V DD 256 2 ______ V 1 –V 2 128 x 126 + V 2 253 1 1 1 1 1 1 0 1 ⋅ ⋅ ____ 381 512 x V DD ____ V DD 512 x (D(A)–128) + ____ V DD 2 _________ 2xV 1 –V DD x 125 + ____ V DD 256 2 _________ 2xV 1 –V DD x (D(A) –128) 256 ____ V + DD 2 ______ V 1 –V 2 128 x 125 + V 2 ______ V 1 –V 2 128 x (D(A)–128) + V 2 129 1 0 0 0 0 0 0 1 ____ 257 512 x V DD _________ 2xV 1 –V DD + ____ V DD 256 2 ______ V 1 –V 2 128 128 1 0 0 0 0 0 0 0 127 0 1 1 1 1 1 1 1 ____ 255 512 ____ V DD 2 x V DD ________ 2xV 1 –V DD 256 ____ V DD 2 x (–1) + ____ V DD 2 V 2 ______ V 1 –V 2 x (–1) 128 + V 2 + V 2 126 0 1 1 1 1 1 1 0 ____ 254 512 x V DD ________ 2xV 1 –V DD x (–2) + ____ V DD 256 2 ______ V 1 –V 2 x (–2) + V 128 2 ⋅ ⋅ ⋅ ⋅ ⋅ 2 0 0 0 0 0 0 1 0 ____ 130 512 x V DD 2xV ________ 1 –V DD 256 x (–126) + ____ V DD 2 ______ V 1 –V 2 x (–126) + V 2 128 1 0 0 0 0 0 0 0 1 ____ 129 512 x V DD 2xV ________ 1 –V DD 256 x (–127) + ____ V DD 2 ______ V 1 –V 2 128 x (–127) + V 2 0 0 0 0 0 0 0 0 0 ____ V DD 4 V DD –V 1 –(V 1 –V 2 ) + V 2 1LSB ____ V DD 512 2xV ________ 1 –V DD 256 ______ V 1 –V 2 128 * Code is set at ”10000000” when reset mode. 10
<strong>MB86022</strong> ANALOG OUTPUT VOLTAGE RANGE Fig. 2 – ON-CHIP REFERENCE VOLTAGE MODE (NO EXTERNAL VR INPUT) __ 4 V DD 1LSB ____ V DD 512 3 x VDD ____ V AOH ____ 383 xVDD 512 ____ V DD 2 D/A Output range V AOL V DD 4 AG (VR1=V 1 , VR2=1/2xV DD ) Fig. 3 – EXTERNAL REFERENCE VOLTAGE MODE V DD 1LSB __________ 2 x V 1 –V DD 256 (VR1) V 1 ____ V DD 2 V AOH __________ 2 x V 1 –V DD x 127 + ____ V DD 256 2 D/A Output range V AOL (V DD –V 1 ) AG (VR1=V 1 , VR2=V 2 ) Fig. 4 – EXTERNAL REFERENCE VOLTAGE MODE V DD 1LSB ______ V 1 –V 2 128 (VR1) V 1 V AOH ____ 127 x (V1 –V 2 ) + V 2 128 (VR2) V 2 D/A Output range V AOL – (V 1 –V 2 ) + V 2 AG 11
Page 1 and 2: DS04-13201-3aE DATA SHEET LINEAR IC
Page 3 and 4: MB86022 BLOCK DIAGRAM D0 to D7 8 8-
Page 5 and 6: MB86022 (Continued) System Pin Numb
Page 7 and 8: MB86022 ELECTRICAL CHARACTERISTICS
Page 9: MB86022 FUNCTION DESCRIPTION TRUTH
Page 13 and 14: MB86022 TIMING DIAGRAM ___ WR V IH
Page 15 and 16: MB86022 24-LEAD PLASTIC FLAT PACKAG

8 BIT 4-CHANNEL D/A CONVERTER MB86022

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