- . , / .
- / , . - - / . , , . , (, . .) . - () , , , , , . . , Front-End Design. - , , .
Motorola (1997 .). 020 (Motorola Field Programmable Analog Arrays), . , . 1999 . Lattice Semiconductor (In-System Programmable) ispPACIO ispPAC20.
Motorola , Lattice Semiconductor - .
, , - . - . , , . . . ( 1970-- 1980- .) . , , , . . , , (. 7.35, ) , , U2 = (- R2/R1)U1. (. 7.35, ) U2 = (-1/ RC)INT U1(t)dt, .
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. , , , () (. 7.35, ). 1 2, UT1 UT2. 1 2 , U1 U2. q = q1 = q2 = C(U1 - U2). , .
1 2 i= q/T = = (U1-U2)C/T, - .
, , R=T/C.
, , . f = 1/T. , , . . ( ) , , .
, , . 7.35, . Z- H(Z) =
= (-C1/C2)(Z 1/1-Z 1), (Z)- , Z- .
020 Motorola (. 7.36) - CAB (Configurable Analog Blocks), / -. CAB SRAM.
160 20 CAB 4x5. CAB (. 7.37) , , , .
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Motorola : , , (Evaluation Boards) .
, ( , , . .).
EasyAnalogDesign-Software, PC- Windows 95/NT. . , , . , . 020.
Evaluation Board 020 , , , .
CAB , , , , , .
.
, , . CAB .
ispPAC Lattice Semiconductor Motorola. , ( ), /. EEPROM JTAG . . , ( ispPAC20 8- ). , - , , , . , , 8- 16- , . 16- 8-, 8- , 16-.
ispPAC20 (. 7.38) () , , 1 10 . 1 63 ( 128 ) . . , - , - . - , , 8- , (JTAG ).
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ispPACIO -.
ispPAC , . . 50 /., 3-4 300 . 5 , 1,25 . - -40 +85 . , , 100 . 1 .
-88 10 -67 100 , 10 -72 -61 .
4 %.
5 %. 0,1 % - 6 , - . 10 750 .
- 3 , - 20 .
- - 10 000.
Lattice Semiconductor -Designer PC- Windows. , , .