參數(shù)資料
型號(hào)： LTC1298I
廠商： Linear Technology Corporation
元件分類(lèi)： 串行ADC
英文描述： Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
中文描述： 微采樣12位A / D轉(zhuǎn)換器于S0 - 8封裝
文件頁(yè)數(shù)： 10/24頁(yè)
文件大?。?/td> 418K
代理商： LTC1298I
10
LTC1286/LTC1298
APPLICATIO
I
FOR
ATIO
U
SERIAL INTERFACE
The 2-channel LTC1298 communicates with micropro-
cessors and other external circuitry via a synchronous,
half duplex, 4-wire serial interface. The single channel
LTC1286 uses a 3-wire interface (see Operating Sequence
in Figures 1 and 2).
W
U
U
Data Transfer
The CLK synchronizes the data transfer with each bit being
transmitted on the falling CLK edge and captured on the
rising CLK edge in both transmitting and receiving systems.
The LTC1286 does not require a configuration input word
and has no D
IN
pin. A falling CS initiates data transfer as
shown in the LTC1286 operating sequence. After CS falls
the second CLK pulse enables D
OUT
. After one null bit the
A/D conversion result is output on the D
OUT
line. Bringing
CS high resets the LTC1286 for the next data exchange.
The LTC1298 first receives input data and then transmits
back the A/D conversion result (half duplex). Because of
the half duplex operation, D
IN
and D
OUT
may be tied
together allowing transmission over just 3 wires: CS, CLK
and DATA (D
IN
/D
OUT
).
Data transfer is initiated by a falling chip select (CS) signal.
After CS falls the LTC1298 looks for a start bit. After the
start bit is received, the 3-bit input word is shifted into the
D
IN
input which configures the LTC1298 and starts the
conversion. After one null bit, the result of the conversion
is output on the D
OUT
line. At the end of the data exchange
CS should be brought high. This resets the LTC1298 in
preparation for the next data exchange.
CLK
CS
t
CYC
B11
B5
B6
B7
B8
B9
B10
B11
HI-Z
D
OUT
t
CONV
t
DATA
HI-Z
t
suCS
NULL
BIT
B4
B3
B2
B1
POWER
DOWN
POWER DOWN
B0*
NULL
BIT
B10
B9
B8
t
SMPL
(MSB)
(MSB)
CLK
CS
t
CYC
B11*
B5
B6
B7
B8
B9
B10
B11
HI-Z
D
OUT
t
CONV
t
DATA
HI-Z
t
suCS
NULL
BIT
LTC1286/98 F01
B4
B3
B3
B4
B5
B6
B7
B2
B2
B1
B0
B1
B10
B9
B8
t
SMPL
*AFTER COMPLETING THE DATA TRANSFER, IF FURTHER CLOCKS ARE APPLIED WITH CS LOW,
THE ADC WILL OUTPUT ZEROS INDEFINITELY.
t
: DURING THIS TIME, THE BIAS CIRCUIT AND THE COMPARATOR POWER DOWN AND THE REFERENCE INPUT
BECOMES A HIGH IMPEDANCE NODE, LEAVING THE CLK RUNNING TO CLOCK OUT LSB-FIRST DATA OR ZEROES.
*AFTER COMPLETING THE DATA TRANSFER, IF FURTHER CLOCKS ARE APPLIED WITH CS LOW,
THE ADC WILL OUTPUT LSB-FIRST DATA THEN FOLLOWED WITH ZEROS INDEFINITELY.
Figure 1. LTC1286 Operating Sequence
相關(guān)PDF資料
PDF描述
LTC1298CN8 Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
LTC1298IN8 Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
LTC1286 12.5 ksps,Micropower Sampling 12-Bit A/D Converters In S0-8 Packages(12.5 ksps,12位,采樣模數(shù)轉(zhuǎn)換器(SO-8封裝))
LTC1298 11.1 ksps,Micropower Sampling 12-Bit A/D Converters In S0-8 Packages(11.1 ksps,12位,采樣模數(shù)轉(zhuǎn)換器(SO-8封裝))
LTC1287CCJ 3V Single Chip 12-Bit Data Acquisition System
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參數(shù)描述
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LTC1298IN8#PBF 功能描述:IC A/D CONV SAMPLING 12BIT 8-DIP RoHS:是 類(lèi)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(lèi)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(lèi)型:2 個(gè)單端，單極
LTC1298IS8 功能描述:IC A/D CONV SAMPLING 12BIT 8SOIC RoHS:否 類(lèi)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(lèi)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(lèi)型:2 個(gè)單端，單極
LTC1298IS8#PBF 功能描述:IC A/D CONV SAMPLING 12BIT 8SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱(chēng):497-5435-6
LTC1298IS8#PBF 制造商:Linear Technology 功能描述:IC ADC 12BIT 11.1KSPS SOIC-8 制造商:Linear Technology 功能描述:IC, ADC, 12BIT, 11.1KSPS, SOIC-8
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