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LTC2401IMS Datasheet

  • LTC2401IMS

  • 1-/2-Channel 24-Bit uPower No Latency ADC in MSOP-10

  • 12頁

  • LINER

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Final Electrical Specifications
LTC2401/LTC2402
1-/2-Channel 24-Bit
碌Power
No Latency
鈭單?/div>
TM
ADC in MSOP-10
FEATURES
s
s
s
s
DESCRIPTIO
January 2000
s
s
s
s
s
s
s
s
s
s
s
24-Bit ADC in Tiny MSOP-10 Package
1- or 2-Channel Inputs
Automatic Channel Selection (Ping-Pong) (LTC2402)
Zero Scale and Full Scale Set for Reference
and Ground Sensing
4ppm INL, No Missing Codes
4ppm Full-Scale Error
0.5ppm Offset
0.6ppm Noise
Internal Oscillator鈥擭o External Components Required
110dB Min, 50Hz/60Hz Notch Filter
Single Conversion Settling Time for
Multiplexed Applications
Reference Input Voltage: 0.1V to V
CC
Live Zero鈥擡xtended Input Range Accommodates
12.5% Overrange and Underrange
Single Supply 2.7V to 5.5V Operation
Low Supply Current (200碌A(chǔ)) and Auto Shutdown
The LTC
廬
2401/LTC2402 are 1- and 2-channel 2.7V to
5.5V micropower 24-bit analog-to-digital converters with
an integrated oscillator, 4ppm INL and 0.6ppm RMS
noise. These ultrasmall devices use delta-sigma technol-
ogy and a new digital filter architecture that settles in a
single cycle. This eliminates the latency found in conven-
tional
鈭單?/div>
converters and simplifies multiplexed applica-
tions.
Through a single pin, the LTC2401/LTC2402 can be
configured for better than 110dB rejection at 50Hz or
60Hz
鹵2%,
or can be driven by an external oscillator for
a user defined rejection frequency in the range 1Hz to
120Hz. The internal oscillator requires no external fre-
quency setting components.
These converters accept an external reference voltage
from 0.1V to V
CC
. With an extended input conversion
range of 鈥?2.5% V
REF
to 112.5% V
REF
(V
REF
= FS
SET
鈥?/div>
ZS
SET
), the LTC2401/LTC2402 smoothly resolve the off-
set and overrange problems of preceding sensors or
signal conditioning circuits.
The LTC2401/LTC2402 communicate through a 2- or
3-wire digital interface that is compatible with SPI and
MICROWIRE
TM
protocols.
, LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency
鈭單?/div>
is a trademark of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
APPLICATIO S
s
s
s
s
s
s
s
Weight Scales
Direct Temperature Measurement
Gas Analyzers
Strain-Gage Transducers
Instrumentation
Data Acquisition
Industrial Process Control
TYPICAL APPLICATIO
2.7V TO 5.5V
1碌F
1
V
CC
LTC2402
REFERENCE VOLTAGE
ZS
SET
+ 0.1V TO V
CC
ANALOG
INPUT RANGE
鈥?.12V
REF
TO 1.12V
REF
(V
REF
= FS
SET
鈥?ZS
SET
)
0V TO FS
SET
鈥?100mV
2
3
4
5
FS
SET
CH1
CH0
ZS
SET
SCK
SDO
CS
GND
F
O
Pseudo Differential Bridge Digitizer
2.7V TO 5.5V
V
CC
10
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
9
8
7
6
3-WIRE
SPI INTERFACE
24012 TA01
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
1
2
4
3
5
V
CC
LTC2402
FS
SET
9
SCK
CH0
CH1
ZS
SET
GND
6
SDO
CS
F
O
8
7
10
U
U
3-WIRE
SPI INTERFACE
INTERNAL OSCILLATOR
60Hz REJECTION
24012TA02
1

LTC2401IMS 產(chǎn)品屬性

  • LTC2401/02

  • 50

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 24

  • 7.5

  • MICROWIRE?，串行，SPI?

  • 2

  • 1mW

  • 單電源

  • -40°C ~ 85°C

  • 表面貼裝

  • 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）

  • 10-MSOP

  • 管件

  • 2 個單端，單極；2 個偽差分，單極

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