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參數(shù)資料
| 型號： | LTC1288CS8#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV SAMPLING 12BIT 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 6.6k |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 630µW |
| 電壓電源： | 單電源 |
| 工作溫度： | 0°C ~ 70°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(gè)單端，單極 |
1
LTC1285/LTC1288
3V Micropower Sampling
12-Bit A/D Converters in
SO-8 Packages
s
12-Bit Resolution
s
8-Pin SO Plastic Package
s
Low Cost
s
Low Supply Current: 160
A Typ
s
Auto Shutdown to 1nA Typ
s
Guaranteed
±3/4LSB Max DNL
s
Single Supply 3V to 6V Operation
s
Differential Inputs (LTC1285)
s
2-Channel MUX (LTC1288)
s
On-Chip Sample-and-Hold
s
100
s Conversion Time
s
Sampling Rates:
7.5ksps (LTC1285)
6.6ksps (LTC1288)
s
I/O Compatible with SPI, Microwire, etc.
The LTC
1285/LTC1288 are 3V micropower, 12-bit, suc-
cessive approximation sampling A/D converters. They
typically draw only 160
A of supply current when con-
verting and automatically power down to a typical supply
current of 1nA whenever they are not performing conver-
sions. They are packaged in 8-pin SO packages and
operate on 3V to 6V supplies. These 12-bit, switched-
capacitor, successive approximation ADCs include
sample-and-holds. The LTC1285 has a single differential
analog input. The LTC1288 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.
APPLICATIONS
U
SAMPLE FREQUENCY (kHz)
0.1
1
SUPPLY
CURRENT
(
A)
10
100
1000
1
10
100
LTC1285/88 TA02
TA = 25°C
VCC = 2.7V
VREF = 2.5V
fCLK = 120kHz
Supply Current vs Sample Rate
s
Pen Screen Digitizing
s
Battery-Operated Systems
s
Remote Data Acquisition
s
Isolated Data Acquisition
s
Battery Monitoring
s
Temperature Measurement
12
W, S0-8 Package, 12-Bit ADC
Samples at 200Hz and Runs Off a 3V Supply
3V
1
F
ANALOG INPUT
0V TO 3V RANGE
–IN
GND
VCC
CLK
DOUT
VREF
LTC1285
MPU
(e.g., 8051)
P1.4
P1.3
P1.2
+IN
LTC1285/88 TA01
CS/SHDN
6
5
8
7
3
4
1
2
SERIAL DATA LINK
FEATURES
DESCRIPTION
U
TYPICAL APPLICATIONS N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
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