參數(shù)資料
型號(hào)： LTC1298IN8
廠(chǎng)商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： ADC
英文描述： Micropower Sampling 12-Bit A/D Converters In S0-8 Packages
中文描述： 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8
封裝： PLASTIC, DIP-8
文件頁(yè)數(shù)： 23/24頁(yè)
文件大?。?/td> 418K
代理商： LTC1298IN8
23
LTC1286/LTC1298
A “Quick Look” Circuit for the LTC1286
Users can get a quick look at the function and timing of the
LT1286 by using the following simple circuit (Figure 13).
V
REF
is tied to V
CC
. V
IN
is applied to the +IN input and the
–IN input is tied to the ground. CS is driven at 1/16 the
clock rate by the 74C161 and D
OUT
outputs the data. The
output data from the D
OUT
pin can be viewed on an
oscilloscope that is set up to trigger on the falling edge of
CS (Figure 14). Note the LSB data is partially clocked out
before CS goes high.
TYPICAL APPLICATIO
S
N
U
Micropower Battery Voltage Monitor
A common problem in battery systems is battery voltage
monitoring. This circuit monitors the 10 cell stack of NiCad
or NiMH batteries found in laptop computers. It draws only
67
μ
A from the 5V supply at f
SMPL
= 0.1kHz and 25
μ
A to
55
μ
A from the battery. The 12-bits of resolution of the
LTC1286 are positioned over the desired range of 8V to
16V. This is easily accomplished by using the ADC’s
differential inputs. Tying the –input to the reference gives
an ADC input span of V
REF
to 2V
REF
(2.5V to 5V). The
resistor divider then scales the input voltage for 8V to 16V.
Figure 13. “Quick Look” Circuit for the LTC1286
CLR
CLK
A
B
C
D
P
GND
V
CC
RC
QA
QB
QC
QD
T
LOAD
74C161
V
IN
TO OSCILLOSCOPE
CLOCK IN 250kHz
LTC1286/98 F13
V
CC
CLK
D
OUT
LTC1286
V
REF
+IN
–IN
GND
4.7
μ
F
5V
5V
CS
Figure 14. Scope Trace the LTC1286 “Quick Look” Circuit
Showing A/D Output 101010101010 (AAA
HEX
)
Figure 15. Micropower Battery Voltage Monitor
39k
5V
LT1004-2.5
200k
91k
3
BATTERY MONITOR
INPUT 8V TO 16V
1
μ
F
0.1
μ
F
CS
CLK
D
OUT
LTC1286
LTC1286/98 F15
–IN
V
CC
V
REF
GND
+IN
MSB
(B11)
VERTICAL: 5V/DIV
HORIZONTAL: 10μs/DIV
LSB
(B0)
NULL
BIT
LTC1286/98 F14
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of circuits as described herein will not infringe on existing patent rights.
相關(guān)PDF資料
PDF描述
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
LTC1287BC 3V Single Chip 12-Bit Data Acquisition System
LTC1287BCJ 3V Single Chip 12-Bit Data Acquisition System
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參數(shù)描述
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
LTC1298IS8#TR 功能描述:IC ADC 12BIT SAMPL MCRPWR 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
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