參數(shù)資料
型號: LTC2400
廠商: Linear Technology Corporation
英文描述: 24-Bit uPower No Latency ADC in SO-8
中文描述: 24位uPower在ADC的無延遲蘇- 8
文件頁數(shù): 1/40頁
文件大小: 455K
代理商: LTC2400
1
LTC2400
FEATURES
DESCRIPTIOU
The LTC
2400 is a 2.7V to 5.5V micropower 24-bit
converter with an integrated oscillator, 4ppm INL and
0.3ppm RMS noise. It uses delta-sigma technology and
provides single cycle settling time for multiplexed appli-
cations. Through a single pin the LTC2400 can be config-
ured for better than 110dB rejection at 50Hz or 60Hz
±
2%,
or it 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 frequency
setting components.
The converter accepts any external reference voltage from
0.1V to V
CC
. With its extended input conversion range of
–12.5% V
REF
to 112.5% V
REF
, the LTC2400 smoothly
resolves the offset and overrange problems of preceding
sensors or signal conditioning circuits.
The LTC2400 communicates through a flexible 3-wire
digital interface which is compatible with SPI and
MICROWIRE
TM
protocols.
APPLICATIU
TYPICAL APPLICATIO
U
24-Bit
μ
Power
No Latency
Σ
TM
ADC in SO-8
I
Weight Scales
I
Direct Temperature Measurement
I
Gas Analyzers
I
Strain-Gage Transducers
I
Instrumentation
I
Data Acquisition
I
Industrial Process Control
I
6-Digit DVMs
Total Unadjusted Error vs Output Code
I
24-Bit ADC in SO-8 Package
I
4ppm INL, No Missing Codes
I
4ppm Full-Scale Error
I
Single Conversion Settling Time
for Multiplexed Applications
I
0.5ppm Offset
I
0.3ppm Noise
I
Internal Oscillator—No External Components
Required
I
110dB Min, 50Hz/60Hz Notch Filter
I
Reference Input Voltage: 0.1V to V
CC
I
Live Zero—Extended Input Range Accommodates
12.5% Overrange and Underrange
I
Single Supply 2.7V to 5.5V Operation
I
Low Supply Current (200
μ
A) and Auto Shutdown
V
CC
F
O
V
REF
SCK
V
IN
SDO
GND
CS
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUT RANGE
–0.12V
REF
TO 1.12V
REF
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
3-WIRE
SPI INTERFACE
1
μ
F
2.7V TO 5.5V
LTC2400
2400 TA01
V
CC
OUTPUT CODE (DECIMAL)
0
8,338,608
16,777,215
L
2400 TA02
10
8
6
4
2
0
–2
–4
–6
–8
–10
V
CC
= 5V
V
REF
= 5V
T
A
= 25
°
C
F
O
= LOW
, LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency
Σ
is a trademark of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
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