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參數(shù)資料
| 型號(hào)： | LTC1090CSW |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 17/28頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DATA ACQUIS SYS 10BIT 20-SOIC |
| 標(biāo)準(zhǔn)包裝： | 38 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS），ADC |
| 分辨率（位）： | 10 b |
| 采樣率（每秒）： | 30k |
| 數(shù)據(jù)接口： | 串行 |
| 電壓電源： | 單/雙電源 |
| 電源電壓： | ±5V，5V，10V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC |
| 包裝： | 管件 |
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24
LTC1090
1090fc
U
TYPICAL APPLICATIO
Sneak-A-Bit Code for the LTC1090 Using the MC68HC05C4
MNEMONIC
DESCRIPTION
READ–/+: LDA
#$3F
Load DIN word for LTC1090 into ACC
JSR
TRANSFER Read LTC1090 routine
LDA
$60
Load MSBs from LTC1090 into ACC
STA
$71
Store MSBs in $71
LDA
$61
Load LSBs from LTC1090 into ACC
STA
$72
Store LSBs in $72
RTS
Return
READ+/–: LDA
#$7F
Load DIN word for LTC1090 into ACC
JSR
TRANSFER Read LTC1090 routine
LDA
$60
Load MSBs from LTC1090 into ACC
STA
$73
Store MSBs in $73
LDA
$61
Load LSBs from LTC1090 into ACC
STA
$74
Store LSBs in $74
RTS
Return
TRANSFER: BCLR 0, $02
CS goes low
STA
$0C
Load DIN into SPI. Start transfer
LOOP 1:
TST
$0B
Test status of SPlF
BPL
LOOP 1
Loop to previous instruction if not done
LDA
$0C
Load contents of SPI data reg into ACC
STA
$0C
Start next cycle
STA
$60
Store MSBs in $60
LOOP 2:
TST
$0B
Test status of SPlF
BPL
LOOP 2
Loop to previous instruction if not done
BSET 0, $02
CS goes high
LDA
$0C
Load contents of SPI data reg into ACC
STA
$61
Store LSBs in $61
RTS
Return
CHK SIGN: LDA
$73
Load MSBs of +/– read into ACC
ORA
$74
Or ACC (MSBs) with LSBs of +/– read
BEQ
MINUS
If result is 0 goto minus
CLC
Clear carry
ROR $73
Rotate right $73 through carry
ROR $74
Rotate right $74 through carry
LDA
$73
Load MSBs of +/– read into ACC
STA
$77
Store MSBs in RAM location $77
LDA
$74
Load LSBs of +/– read into ACC
STA
$87
Store LSBs in RAM location $87
BRA
END
Goto end of routine
MINUS:
CLC
Clear carry
ROR $71
Shift MSBs of – /+ read right
ROR $72
Shift LSBs of – /+ read right
COM $71
1’s complement of MSBs
COM $72
1’s complement of LSBs
LDA
$72
Load LSBs into ACC
ADD
#$01
Add 1 to LSBs
STA
$72
Store ACC in $72
CLRA
Clear ACC
ADC
$71
Add with carry to MSBs. Result in ACC
STA
$71
Store ACC in $71
STA
$77
Store MSBs in RAM location $77
LDA
$72
Load LSBs in ACC
STA
$87
Store LSBs in RAM location $87
END:
RTS
Return
MNEMONIC
DESCRIPTION
LDA
#$50
Configuration data for SPCR
STA
$0A
Load configuration data into $0A
LDA
#$FF
Configuration data for port C DDR
STA
$06
Load configuration data into port C DDR
BSET
0, $02
Make sure CS is high
JSR
READ– /+
Dummy read configures LTC1090 for next
read
JSR
READ+/–
Read CH6 with respect to CH7
JSR
READ– /+
Read CH7 with respect to CH6
JSR
CHK SIGN
Determines which reading has valid data,
converts to 2’s complement and stores in
RAM
SNEAK-A-BIT
Sneak-A-Bit Code for the LTC1090 Using the MC68HC05C4
LTC1090 TA05
1ST CONVERSION
1024 STEPS
5V
–5V
5V
–5V
0V
2ND CONVERSION
1024 STEPS
SOFTWARE
2047 STEPS
( + ) CH6
( – ) CH7
VIN
2ND CONVERSION
SNEAK-A-BIT Code
( – ) CH6
( + ) CH7
VIN
DOUT from LTC1090 in MC68HC05C4 RAM
DIN words for LTC1090
Location $77
Sign
LSB
B2
B1
B0
B10
B9
B8
filled with 0s
B7
B6
B5
B4
B3
Location $87
(ODD/SIGN)
MUX Addr.
Word
Length
UNI
MSBF
DIN 1
001
1
1111
DIN 2
011
1
1111
DIN 3
001
1
1111
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| LTC1090CSW#PBF | 功能描述:IC DATA ACQUIS SYS 10BIT 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1090CSW#TR | 功能描述:IC DATA ACQ SYSTEM 10BIT 20SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1090CSW#TRPBF | 功能描述:IC DATA ACQUIS SYS 10BIT 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1090M | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090MJ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
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