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參數(shù)資料
| 型號： | FLASH6_C3 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 英文描述： | ANALOG IP BLOCK FLASH6 - CMOS 6-Bit FLASH A/D CONVERTER |
| 中文描述： | 模擬IP塊FLASH6 -的CMOS 6位閃存的A / D轉換器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 243K |
| 代理商： | FLASH6_C3 |
DataSheet:FLASH6-C35
RevisionB,07.09.02
Page6of9
SYMBOL
PD
STROBE
FLASH6
DATA<5:0>
6
OVL
CLK
VIN
VREFP
VREFN
A
D
VDDA
VDD
VSSA
VSS
IBIAS
SHIELD
PINLIST
Pin
VIN
VREFP
Description
InputVoltage
Pos.Reference
Voltage
Neg.Reference
Voltage
BiasCurrent
Powerdown
Signal
Typ
AIN
AIN
Cap
5pF
VREFN
AIN
IBIAS
PD
AIN
DIN
0.1pF
CLK
DATA<5:0>
MasterClock
DataOutput
(DATA<5>=MSB)
Overload
DataStrobeSignal
Pos.Analog
Supply
Neg.Analog
Supply
ConnecttoVSSA
Pos.Digital
Supply
Neg.Digital
Supply
DIN
DOUT
0.1pF
OVL
STROBE
VDDA
DOUT
DOUT
S
VSSA
S
SHIELD
VDD
S
S
VSS
S
THEORY OF OPERATION
TheMacroCellFLASH6isa6-bitsinglestepparallelanalogto
digitalconverter.Thearchitectureisbasedona380Ohm
polysiliconresistorreferenceladderandstaticCMOS comparators.
Thethermometercodeofthecomparatoroutputsisencodedina
fastROMencoderintostraightbinarycodewithCMOS logicsignal
levels.Thelastcomparatoroutputisconnectedunlatchedtothe
OVLoutput.Theareaoftheconverterissmall.Thecomparatorsdo
notneedautozeroingandthereforearefastandperformmnimal
kickbackontheanalogsignalinput.Theconversionrangeissetby
thereferenceinputsVREFPandVREFN.TheoutputOVLindicates
anoverloadconditionwhenVin>(VREFP-0.5*LSB).
POWER SUPPLIES
Theconverterrequiresasingle+3.3V powersupply.Thesupplies
foranaloganddigitalareseparatedandmaybeconnected
together.However, formaximumnoiseimmunityitis
recommendedtowirethemonchiptoseparatedpins, especially
whentheblockisembeddedinalargedigitalcircuit.Thesupplies
maythenbeconnectedtogetheronPC-boardlevel.
Theproperuseofblockingcapacitorsintheapplicationisimportant
REFERENCE VOLTAGE
BothinputpadsVREFPandVREFNmusthavea0Ohmprotection
resistor.TheESDtestwasperformedwith
±
1kV (NormMIL883E
method3015).
Theproperuseofblockingcapacitorsintheapplicationis
important!
INPUT VOLTAGE
TheinputpadVINmusthavea0Ohmprotectionresistor.TheESD
testwasperformedwith
±
1kV (NormMIL883E method3015).
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