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參數資料
| 型號： | DC1067A-B |
| 廠商： | Linear Technology |
| 文件頁數： | 1/20頁 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2450-1 |
| 軟件下載： | QuikEval System |
| 設計資源： | DC1067A Design File DC1067A Schematic |
| 標準包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數量： | 1 |
| 位數： | 16 |
| 采樣率（每秒）： | 30 |
| 數據接口： | 串行，SPI? |
| 已用 IC / 零件： | LTC2450-1 |
| 已供物品： | 板 |
| 相關產品： | LTC2450IDC#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC-1#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC-1#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC-1#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC-1#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN |
LTC2450
1
2450fb
FEATURES
APPLICATIONS
DESCRIPTION
Easy-to-Use, Ultra-Tiny
16-Bit ΔΣ 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 VCC.
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.
n GND to VCC Single-Ended Input Range
n 0.02LSB RMS Noise
n 2LSB INL, No Missing Codes
n 2LSB Offset Error
n 4LSB Full-Scale Error
n Single Conversion Settling Time for Multiplexed
Applications
n Single Cycle Operation with Auto Shutdown
n 350μA Supply Current
n 50nA Sleep Current
n 30 Conversions Per Second
n Internal Oscillator—No External Components
Required
n Single Supply, 2.7V to 5.5V Operation
n SPI Interface
n Ultra-Tiny 2mm × 2mm DFN Package
n System Monitoring
n Environmental Monitoring
n Direct Temperature Measurements
n Instrumentation
n Industrial Process Control
n Data Acquisition
n Embedded ADC Upgrades
Integral Nonlinearity, VCC = 3V
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. East Drive
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378.
SENSE
SCK
VIN
3-WIRE SPI
INTERFACE
SDO
LTC2450
GND
0.1μF
10μF
VCC
CLOSE TO
CHIP
1k
2450 TA01
CS
INPUT VOLTAGE (V)
0
–3.0
INL
(LSB)
–2.0
–1.0
0
1.0
3.0
0.5
1.0
1.5
2.0
2450 G02
2.5
3.0
2.0
–2.5
–1.5
–0.5
0.5
2.5
1.5
VCC = VREF = 3V
TA = –45°C, 25°C, 90°C
TYPICAL APPLICATION
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