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參數(shù)資料
| 型號(hào)： | LTC1290CC |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Single Chip 12-Bit Data Acquisition System |
| 中文描述： | 單芯片12位數(shù)據(jù)采集系統(tǒng) |
| 文件頁(yè)數(shù)： | 25/28頁(yè) |
| 文件大小： | 381K |
| 代理商： | LTC1290CC |
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25
LTC 1290
U
S
A
O
PPLICATI
TYPICAL
Scope Trace of LTC1290 “Quick Look” Circuit
Showing A/D Output of 010101010101 (555
HEX
)
D
OUT
CS
ACLK/
SCLK
MSB
(B11)
VERTICAL: 5V/DIV
HORIZONTAL: 1
μ
s/DIV
DEGLITCHER
TIME
LSB
(B0)
FILLS
ZEROS
SNEAK-A-BIT
TM
The LTC1290’s unique ability to software select the polar-
ity of the differential inputs and the output word length is
used to achieve one more bit of resolution. Using the
circuit below with two conversions and some software, a
2’s complement 12-bit + sign word is returned to memory
inside the MPU. The MC68HC05C4 was chosen as an
example, however, any processor could be used.
Two 12-bit unipolar conversions are performed: the first
over a 0V to 5V span and the second over a 0V to –5V span
(by reversing the polarity of the inputs). The sign of the
input is determined by which of the two spans contained
it. Then the resulting number (ranging from –4095 to
+4095 decimal) is converted to 2’s complement notation
and stored in RAM.
SNEAK-A-BIT Circuit
1290 TA04
22
μ
F
LT1021-5
MC68HC05C4
SCLK
MOSI
MISO
CO
–5V
0.1
μ
F
2MHz
CLOCK
OTHER CHANNELS
OR SNEAK-A-BIT
INPUTS
V
IN
–5V TO 5V
LTC1290
CHO
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGND
V
CC
ACLK
SCLK
D
IN
D
OUT
CS
REF
+
REF
–
V
–
AGND
9V
5V
1ST CONVERSION
(+) CH6
(–) CH7
0V
0V
1ST CONVERSION
4096 STEPS
2ND CONVERSION
4096 STEPS
–5V
2ND CONVERSION
(–) CH6
(+) CH7
0V
V
IN
V
IN
V
IN
5V
–5V
SOFTWARE
8191
STEPS
1290 TA05
SNEAK-A-BIT
SNEAK-A-BIT is a trademark of Linear Technology Corp.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1290CCN | Single Chip 12-Bit Data Acquisition System |
| LTC1290CCSW | Single Chip 12-Bit Data Acquisition System |
| LTC1290CI | Single Chip 12-Bit Data Acquisition System |
| LTC1290CIJ | Single Chip 12-Bit Data Acquisition System |
| LTC1290CIN | Single Chip 12-Bit Data Acquisition System |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| LTC1290CCN#PBF | 功能描述:IC DATA ACQ SYS 12BIT 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:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| LTC1290CCNPBF | 制造商:Linear Technology 功能描述:ADC SAR 50ksps 12-Bit Serial PDIP20 |
| LTC1290CCSW | 功能描述:IC DATA ACQ SYS 12BIT 20-SOIC 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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