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參數(shù)資料
| 型號： | LTC2450IDCTRPBF |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Easy-to-Use, Ultra-Tiny 16-Bit ADC |
| 中文描述： | 易于使用，超微型16位ADC |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 628K |
| 代理商： | LTC2450IDCTRPBF |
LTC2450
2450fa
Features
applications
Description
Easy-to-Use, Ultra-Tiny
16-Bit
DS
ADC
The LTC
2450 is an ultra-tiny 16-bit analog-to-digital
converter. The LTC2450 uses a single 2.7V to 5.5V supply,
accepts a single-ended analog input voltage, and commu-
nicates through an SPI interface. It includes an integrated
oscillator that does not require any external components.
It uses a delta-sigma modulator as a converter core and
provides single-cycle settling time for multiplexed applica-
tions. The converter is available in a 6-pin, 2mm
×
2mm
DFN package. The internal oscillator does not require any
external components. The LTC2450 includes a proprietary
input sampling scheme that reduces the average input
sampling current several orders of magnitude.
The LTC2450 is capable of up to 30 conversions per sec-
ond and, due to the very large oversampling ratio, has
extremely relaxed antialiasing requirements. The LTC2450
includes continuous internal offset and full-scale calibra-
tion algorithms which are transparent to the user, ensuring
accuracy over time and over the operating temperature
range. The converter uses its power supply voltage as the
reference voltage and the single-ended, rail-to-rail input
voltage range extends from GND to V
CC
.
Following a conversion, the LTC2450 can automatically
enter a sleep mode and reduce its power to less than
200nA. If the user samples the ADC once a second, the
LTC2450 consumes an average of less than 50μW from
a 2.7V supply.
typical application
■
GND to V
CC
Single-Ended Input Range
■
0.02LSB RMS Noise
■
2LSB INL, No Missing Codes
■
2LSB Offset Error
■
4LSB Full-Scale Error
■
Single Conversion Settling Time for Multiplexed
Applications
■
Single Cycle Operation with Auto Shutdown
■
350μA Supply Current
■
50nA Sleep Current
■
30 Conversions Per Second
■
Internal Oscillator—No External Components
Required
■
Single Supply, 2.7V to 5.5V Operation
■
SPI Interface
■
Ultra-Tiny 2mm
×
2mm DFN Package
■
System Monitoring
■
Environmental Monitoring
■
Direct Temperature Measurements
■
Instrumentation
■
Industrial Process Control
■
Data Acquisition
■
Embedded ADC Upgrades
SENSE
SCK
V
IN
3-WIRE SPI
INTERFACE
SDO
LTC2450
GND
0.1
μ
F
0.1
μ
F
10
μ
F
V
CC
CLOSE TO
CHIP
1k
2450 TA01
CS
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Easy Drive is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Integral Nonlinearity, V
CC
= 3V
INPUT VOLTAGE (V)
0
–3.0
I
–2.0
–2.5
–1.0
–1.5
0
1.0
0.5
3.0
2.5
0.5
1.0
1.5
2.0
2450 G02
2.5
3.0
2.0
1.5
–0.5
V
CC
= V
REF
= 3V
T
A
= –45
°
C, 25
°
C, 90
°
C
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