參數(shù)資料
型號(hào)： LTC1290BISW
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： Single Chip 12-Bit Data Acquisition System
中文描述： 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： 0.300 INCH, PLASTIC, SOP-20
文件頁數(shù)： 17/28頁
文件大?。?/td> 381K
代理商： LTC1290BISW
17
LTC 1290
U
S
A
O
PPLICATI
U
U
8051 Code
MNEMONIC
MOV P1,#02H
CLR
SETB P1.4
MOV A,#0EH
CLR
MOV R4,#08H
NOP
MOV C,P1.1
RLC A
MOV P1.2,C
SETB P1.3
CLR
DJNZ R4,LOOP
MOV R2,A
MOV C,P1.1
CLR
RLC A
SETB P1.3
CLR
MOV C,P1.1
RLC A
SETB P1.3
CLR
MOV C,P1.1
RLC A
SETB P1.3
CLR
MOV C, P1.1
RRC A
RRC A
RRC A
RRC A
MOV R3,A
SETB P1.3
CLR
SETB P1.4
COMMENTS
Bit 1 Port 1 Set as Input
SCLK Goes Low
CS Goes High
D
IN
Word for LTC1290
CS Goes Low
Load Counter
Delay for Deglitcher
Read Data Bit Into Carry
Rotate Data Bit Into ACC
Output D
IN
Bit to LTC1290
SCLK Goes High
SCLK Goes Low
Next Bit
Store MSBs in R2
Read Data Bit Into Carry
Clear ACC
Rotate Data Bit Into ACC
SCLK Goes High
SCLK Goes Low
Read Data Bit Into Carry
Rotate Data Bit Into ACC
SCLK Goes High
SCLK Goes Low
Read Data Bit Into Carry
Rotate Data Bit Into ACC
SCLK Goes High
SCLK Goes Low
Read Data Bit Into Carry
Rotate Right Into ACC
Rotate Right Into ACC
Rotate Right Into ACC
Rotate Right Into ACC
Store LSBs in R3
SCLK Goes High
SCLK Goes Low
CS Goes High
P1.3
CONT
P1.4
LOOP
P1.3
A
P1.3
P1.3
P1.3
P1.3
MOV R5,#0BH
DJNZ R5,DELAY
Load Counter
Go to Delay if Not Done
DELAY
8 CHANNELS
8 CHANNELS
8 CHANNELS
3
3
3
3
3-WIRE SERIAL
INTERFACE TO OTHER
PERIPHERALS OR LTC1290s
2
1
0
OUTPUT PORT
SERIAL DATA
MPU
LTC1290 F05
LTC1290
CS
LTC1290
CS
LTC1290
CS
Sharing the Serial Interface
The LTC1290 can share the same 3-wire serial interface
with other perpheral components or other LTC1290s (see
Figure 5). In this case, the CS signals decide which
LTC1290 is being addressed by the MPU.
ANALOG CONSIDERATIONS
1. Grounding
The LTC1290 should be used with an analog ground plane
and single point grounding techniques.
AGND (Pin 11) should be tied directly to this ground plane.
DGND (Pin 10) can also be tied directly to this ground
plane because minimal digital noise is generated within
the chip itself.
V
CC
(Pin 20) should be bypassed to the ground plane with
a 22
μ
F tantalum with leads as short as possible. V
–
(Pin
12) should be bypassed with a 0.1
μ
F ceramic disk. For
single supply applications, V
–
can be tied to the ground
plane.
It is also recommended that REF
–
(Pin 13) and COM (Pin
9) be tied directly to the ground plane. All analog inputs
should be referenced directly to the single point ground.
Digital inputs and outputs should be shielded from and/or
routed away from the reference and analog circuitry.
Figure 5. Several LTC1290s Sharing One 3-Wire Serial Interface
相關(guān)PDF資料
PDF描述
LTC1290BM Single Chip 12-Bit Data Acquisition System
LTC1290BMJ Single Chip 12-Bit Data Acquisition System
LTC1290CC Single Chip 12-Bit Data Acquisition System
LTC1290CCN Single Chip 12-Bit Data Acquisition System
LTC1290CCSW Single Chip 12-Bit Data Acquisition System
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1290BISW#PBF 功能描述:IC DATA ACQ SYS 12BIT 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
LTC1290BISW#TR 功能描述:IC DATA ACQ SYS 12BIT 5V 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
LTC1290BISW#TRPBF 功能描述:IC DATA ACQ SYS 12BIT 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
LTC1290CCJ 制造商:Linear Technology 功能描述:
LTC1290CCN 功能描述:IC DATA ACQ SYS 12BIT 20-DIP 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
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