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參數(shù)資料
| 型號： | LTC1298IS8#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT SAMPL MCRPWR 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 11.1k |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 1.8mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個單端，單極 |
1
LTC1286/LTC1298
Micropower Sampling
12-Bit A/D Converters In
S0-8 Packages
s
12-Bit Resolution
s
8-Pin SOIC Plastic Package
s
Low Cost
s
Low Supply Current: 250
A Typ.
s
Auto Shutdown to 1nA Typ.
s
Guaranteed
±3/4LSB Max DNL
s
Single Supply 5V to 9V Operation
s
On-Chip Sample-and-Hold
s
60
s Conversion Time
s
Sampling Rates:
12.5 ksps (LTC1286)
11.1 ksps (LTC1298)
s
I/O Compatible with SPI, Microwire, etc.
s
Differential Inputs (LTC1286)
s
2-Channel MUX (LTC1298)
s
3V Versions Available: LTC1285/LTC1288
The LTC1286/LTC1298 are micropower, 12-bit, succes-
sive approximation sampling A/D converters. They typi-
cally draw only 250
A of supply current when converting
and automatically power down to a typical supply current
of 1nA whenever they are not performing conversions.
They are packaged in 8-pin SO packages and operate on
5V to 9V supplies. These 12-bit, switched-capacitor, suc-
cessive approximation ADCs include sample-and-holds.
The LTC1286 has a single differential analog input. The
LTC1298 offers a software selectable 2-channel MUX.
On-chip serial ports allow efficient data transfer to a wide
range of microprocessors and microcontrollers over three
wires. This, coupled with micropower consumption, makes
remote location possible and facilitates transmitting data
through isolation barriers.
These circuits can be used in ratiometric applications or
with an external reference. The high impedance analog
inputs and the ability to operate with reduced spans (to
1.5V full scale) allow direct connection to sensors and
transducers in many applications, eliminating the need for
gain stages.
5V
4.7
F
ANALOG INPUT
–IN
GND
VCC
CLK
DOUT
VREF
LTC1286
MPU
(e.g., 8051)
P1.4
P1.3
P1.2
+IN
0V TO 5V RANGE
LTC1286/98 TA01
CS/SHDN
6
5
8
7
3
4
1
2
SERIAL DATA LINK
s
Battery-Operated Systems
s
Remote Data Acquisition
s
Battery Monitoring
s
Handheld Terminal Interface
s
Temperature Measurement
s
Isolated Data Acquisition
SAMPLE FREQUENCY (Hz)
0.1k
1
SUPPLY
CURRENT
(
A)
10
100
1000
1k
10k
100k
LTC1286/98 TA02
TA = 25°C
VCC = VREF = 5V
fCLK = 200kHz
DESCRIPTION
U
25
W, S0-8 Package, 12-Bit ADC
Samples at 200Hz and Runs Off a 5V Supply
Supply Current vs Sample Rate
FEATURES
APPLICATIONS
U
TYPICAL APPLICATIONS N
U
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