LTC6241

Part No.:
LTC6241
Download:
Download
Description:
Easy-to-Use, Ultra-Tiny 16-Bit ADC
File Size:
201 K
Page:
20 Pages
Logo:
Maker:
LINER [ LINEAR TECHNOLOGY ]
PCB Prototype

July 19, 2018:

LTC6945

LTM8001

LU4T041A1X

LX1681CDM

LX1990EVAL

LY2NCRAC220240

M295V200BB70N3T

M58BW032DB55T3T

M76DW63000A90ZT

M80056B-1

MABA-007949-CT65TB

MAX15002ATL+

PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1
FEATURES
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LTC2450-1
Easy-to-Use, Ultra-Tiny
16-Bit
ΔΣ
ADC
DESCRIPTION
The LTC
®
2450-1 is a low power, ultra-tiny 16-bit analog-
to-digital converter designed for space constrained ap-
plications requiring 16-bit performance. The LTC2450-1
uses a single 2.7V to 5.5V supply, accepts a single-ended
analog input voltage, and communicates through an SPI
interface. It includes an integrated oscillator that does
not require any external components. The delta-sigma
modulator converter core provides single-cycle settling
time for multiplexed applications. The converter is avail-
able in a 6-pin, 2mm
×
2mm DFN package. The LTC2450-1
implements a proprietary input sampling scheme that
reduces the average input sampling current several orders
of magnitude.
The LTC2450-1 is capable of up to 60 conversions per
second and, due to the very large oversampling ratio, has
extremely relaxed antialiasing requirements. 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 LTC2450-1 can automatically
enter a sleep mode and reduce its power to less than
500nA. At an output rate of 1Hz, the LTC2450-1 consumes
an average of less than 25μW from a 2.7V supply.
GND to V
CC
Single-Ended Input Range
60 Conversions Per Second
0.02LSB RMS Noise
16-Bits, No Missing Codes
0.5mV 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
Internal Oscillator—No External Components
Required
Single Supply, 2.7V to 5.5V Operation
SPI Interface
Ultra-Tiny, 2mm
×
2mm DFN Package
APPLICATIONS
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System Monitoring
Environmental Monitoring
Direct Temperature Measurements
Instrumentation
Industrial Process Control
Data Acquisition
Embedded ADC Upgrades
L,
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. Protected by U.S. Patents including 6208279, 6411242, 7088280, 7164378.
TYPICAL APPLICATION
3.0
2.5
2.7 TO 5.5V
0.1μF
10μF
INL (LSB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
0
Integral Nonlinearity
V
CC
= V
REF
= 3V
1k
SENSE
CLOSE TO
CHIP
V
IN
0.1μF
V
CC
LTC2450-1
GND
CS
SCK
SDO
24501 TA01
T
A
= –45°C, 25°C, 90°C
3-WIRE SPI
INTERFACE
0.5
1.0
1.5
2.0
INPUT VOLTAGE (V)
2.5
3.0
24501 G02
24501fb
1