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参数资料
| 型号： | LTC2452IDDB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT DELTA SIG 8-DFN |
| 标准包装： | 2,500 |
| 位数： | 16 |
| 采样率（每秒）： | 60 |
| 数据接口： | 串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 2.4mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（3x2） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | DC1384A-A-ND - BOARD DELTA SIGMA ADC LTC2452 |
LTC2452
1
2452fd
For more information www.linear.com/LTC2452
Typical applicaTion
FeaTures
applicaTions
DescripTion
Ultra-Tiny, Differential, 16-Bit
Σ ADC with SPI Interface
The LTC2452 is an ultra-tiny, fully differential, 16-bit,
analog-to-digital converter. The LTC2452 uses a single
2.7V to 5.5V supply and communicates through an SPI
interface. The ADC is available in an 8-pin, 3mm × 2mm
DFNpackageorTSOT-23package.Itincludesanintegrated
oscillator that does not require any external components.
It uses a delta-sigma modulator as a converter core and
has no latency for multiplexed applications. The LTC2452
includesaproprietaryinputsamplingschemethatreduces
the average input sampling current several orders of
magnitude when compared to conventional delta-sigma
converters. Additionally, due to its architecture, there is
negligible current leakage between the input pins.
The LTC2452 can sample at 60 conversions per second,
andduetotheverylargeoversamplingratio,hasextremely
relaxed anti-aliasing requirements. The LTC2452 includes
continuous internal offset and full-scale calibration algo-
rithmswhicharetransparenttotheuser,ensuringaccuracy
over time and over the operating temperature range. The
converter has an external REF pin and the differential input
voltage range can extend up to ±VREF .
Following a single conversion, the LTC2452 can automati-
cally enter a sleep mode and reduce its supply current to
less than 0.2A. If the user reads the ADC once a second,
the LTC2452 consumes an average of less than 50W
from a 2.7V supply.
Integral Nonlinearity, VCC = 3V
n
±VCC Differential Input Range
n
16-Bit Resolution (Including Sign), No Missing
Codes
n
2LSB Offset Error
n
4LSB Full-Scale Error
n
60 Conversions Per Second
n
Single Conversion Settling Time for Multiplexed
Applications
n
Single-Cycle Operation with Auto Shutdown
n
800A Supply Current
n
0.2A Sleep Current
n
Internal Oscillator—No External Components
Required
n
SPI Interface
n
Ultra-Tiny 3mm × 2mm DFN and TSOT-23 Packages
n
System Monitoring
n
Environmental Monitoring
n
Direct Temperature Measurements
n
Instrumentation
n
Industrial Process Control
n
Data Acquisition
n
Embedded ADC Upgrades
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No
Latency
Σ 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.
DIFFERENTIAL INPUT VOLTAGE (V)
–3
INL
(LSB)
1
3
2452 TA01b
–1
0
2
–2
–3
–1
–2
1
2
0
3
TA = –45°C, 25°C, 90°C
10k
R
CS
3-WIRE SPI
INTERFACE
SCK
SDO
0.1F
10F
2.7V TO 5.5V
0.1F
IN+
REF
VCC
GND
IN–
LTC2452
2452 TA01a
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