- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377738 > LTC1283ACN (LINEAR TECHNOLOGY CORP) 3V Single Chip 10-Bit Data Acquisition System PDF資料下載
參數(shù)資料
| 型號(hào)： | LTC1283ACN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 3V Single Chip 10-Bit Data Acquisition System |
| 中文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數(shù)： | 16/24頁 |
| 文件大?。?/td> | 452K |
| 代理商： | LTC1283ACN |
16
LTC1283
6. Sharing the Serial Interface
The LTC1283 can share the same 3-wire serial interface
with other peripheral components or other LTC1283s (see
Figure 5). In this case, the CS signals decide which
LTC1283 is being addressed by the MPU.
U
S
A
O
PPLICATI
IU
U
MNEMONIC
DESCRIPTION
INITIALIZE PORT 1 (BIT 1 IS MADE AN
INPUT)
SCLK GOES LOW
CS GOES LOW
D
IN
WORD FOR THE LTC1283 IS PLACED
IN ACC
CS GOES LOW
LOAD COUNTER
DELAY FOR DEGLITCHER
READ DATA BIT INTO CARRY
ROTATE DATA BIT INTO ACC
OUTPUT D
IN
BIT TO LTC1283
SCLK GOES HIGH
SCLK GOES LOW
NEXT BIT
STORE MSBs IN R2
MOV P1, #02H
CLR P1.3
SETB P1.4
CONTINUE: MOV A, #0DH
CLR P1.4
MOV R4, #08
NOP
MOV C, P1.1
RLC A
MOV P1.2, C
SETB P1.3
CLR P1.3
DJNZ R4, LOOP
MOV R2, A
LOOP:
MNEMONIC
DESCRIPTION
READ DATA BIT INTO CARRY
CLEAR ACC
ROTATE DATA BIT INTO ACC
SCLK GOES HIGH
SCLK GOES LOW
READ DATA BIT IN CARRY
ROTATE RIGHT INTO ACC
ROTATE RIGHT INTO ACC
STORE LSBs IN R3
SCLK GOES HIGH
SCLK GOES LOW
CS GOES HIGH
LOAD COUNTER
DELAY FOR LTC1283 TO PERFORM
CONVERSION
REPEAT PROGRAM
MOV C, P1.1
CLR A
RLC A
SETB P1.3
CLR P1.3
MOV C, P1.1
RRC A
RRC A
MOV R3, A
SETB P1.3
CLR P1.3
SETB P1.4
MOV R5, #07H
DJNZ R5, DELAY
DELAY:
AJMP CONTINUE
83CL410 Code
Figure 5. Several LTC1283s Sharing One 3-Wire Serial Interface
ANALOG CONSIDERATIONS
1. Grounding
The LTC1283 should be used with an analog ground plane
and single point grounding techniques.
Pin 11 (AGND) should be tied directly to this ground plane.
Pin 10 (DGND) can also be tied directly to this ground
plane because minimal digital noise is generated within
the chip itself.
Pin 20 (V
CC
) should be bypassed to the ground plane with
a 4.7
μ
F tantalum with leads as short as possible. Pin 12
(V
–
) 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 pin 13 (REF
–
) and pin 9 (COM)
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 6 shows an example of an ideal ground plane design
for a two-sided board. Of course this much ground plane
will not always be possible, but users should strive to get
as close to this ideal as possible.
2. Bypassing
For good performance, V
CC
must be free of noise and
ripple. Any changes in the V
CC
voltage with respect to
analog ground during a conversion cycle can induce errors
8 CHANNELS
8 CHANNELS
8 CHANNELS
3
3
3
3
3-WIRE SERIAL
INTERFACE TO OTHER
PERIPHERALS OR LTC1283s
2
1
0
OUTPUT PORT
SERIAL DATA
MPU
LTC1283 F05
LTC1283
CS
LTC1283
CS
LTC1283
CS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1283ACS | 3V Single Chip 10-Bit Data Acquisition System |
| LTC1283C | 3V Single Chip 10-Bit Data Acquisition System |
| LTC1283CN | 3V Single Chip 10-Bit Data Acquisition System |
| LTC1283CS | 3V Single Chip 10-Bit Data Acquisition System |
| LTC1283 | 3V Single Chip 10-Bit Data Acquisition System(3V，單片，10位數(shù)據(jù)采集系統(tǒng)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1283ACN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP 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 |
| LTC1283CN | 功能描述:IC DATA ACQ SYS 10BIT 3V 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 |
| LTC1283CN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP 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 |
| LTC1285CN8 | 功能描述:IC A/D CONV SAMPLING 12BIT 8-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
| LTC1285CN8#PBF | 功能描述:IC A/D CONV SAMPLING 12BIT 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端，單極 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。