參數資料
型號: LTC1287CCN8#PBF
廠商: Linear Technology
文件頁數: 1/16頁
文件大?。?/td> 0K
描述: IC DATA ACQ SYS 12BIT 3V 8-DIP
標準包裝: 50
類型: 數據采集系統(tǒng)(DAS)
分辨率(位): 12 b
采樣率(每秒): 30k
數據接口: 串行,并聯(lián)
電壓電源: 單電源
電源電壓: 3V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 8-DIP(0.300",7.62mm)
供應商設備封裝: 8-PDIP
包裝: 管件
LTC1287
1
1287fa
FEATURES
DESCRIPTIO
U
KEY SPECIFICATIO S
U
TYPICAL APPLICATIO
U
3V Single Chip 12-Bit
Data Acquisition System
s
Single Supply 3.3V Operation
s
Built-In Sample-and-Hold
s
Direct 3-Wire Interface to Most MPU Serial Ports and
All MPU Parallel Ports
s
30kHz Maximum Throughput Rate
The LTC
1287 is a 3V data acquisition component which
contains a serial I/O successive approximation A/D con-
verter. The device specifications are guaranteed at a
supply voltage of 2.7V. It uses LTCMOS
TM switched ca-
pacitor technology to perform a 12-bit unipolar, A/D
conversion. The differential input has an on-chip sample-
and-hold on the (+) input.
The serial I/O is designed to communicate without external
hardware to most MPU serial ports and all MPU parallel
I/O ports allowing data to be transmitted and received over
three wires. The low voltage operating capability and the
low power consumption of this device make it ideally
suited for battery applications. Given the ease of use, small
package size and the minimum number of interconnects
for I/O, the LTC1287 can be used for remote sensing
applications.
s
Minimum Guaranteed Supply Voltage: 2.7V
s
Resolution: 12 Bits
s
Fast Conversion Time: 24
s Max Over Temp.
s
Low Supply Current: 1.0mA
s
Battery-Powered Instruments
s
Data Logger
s
Data Acquisition Modules
LTCMOS is a trademark of Linear Technology Corporation
VCC
CLK
DOUT
VREF
LTC1287
CS
+IN
–IN
GND
LT1004-1.2
10k
22
F TANTALUM
22
F
TANTALUM
+
DIFFERENTIAL INPUTS
COMMON MODE RANGE
0V TO VCC*
FOR OVERVOLTAGE PROTECTION, LIMIT THE INPUT CURRENT TO 15mA
PER PIN OR CLAMP THE INPUTS TO VCC AND GND WITH 1N4148 DIODES.
CONVERSION RESULTS ARE NOT VALID WHEN THE SELECTED CHANNEL OR
OTHER CHANNEL IS OVERVOLTAGED (VIN < GND OR VIN > VCC). SEE SECTION
ON OVERVOLTAGE PROTECTION IN THE APPLICATIONS INFORMATION.
*
3V
LITHIUM
TO AND FROM MPU
1287 TA01
+
3V Differential Input Data Acquisition System
INL with VREF = 1.2V
CODE
0
ERROR
(LSB)
0.5
1.0
2048
LTC1287 TA02
0
–1.0
512
1024
1536
–0.5
2560
3072
3584
4096
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
U
相關PDF資料
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