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參數(shù)資料
| 型號： | LTC2424CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 56-BGA MICROSTAR JUNIOR -40 to 85 |
| 中文描述： | 4-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28 |
| 封裝： | 0.209 INCH, PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大?。?/td> | 409K |
| 代理商： | LTC2424CG |
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LTC2412
1
2412f
The LTC
2412 is a 2-channel differential input micropower
24-bit No Latency
Σ
TM
analog-to-digital converter with
an integrated oscillator. It provides 2ppm INL and 0.16ppm
RMS noise over the entire supply range. The two differen-
tial channels are converted alternately with channel ID
included in the conversion results. It uses delta-sigma
technology and provides single conversion settling of the
digital filter. Through a single pin, the LTC2412 can be
configured for better than 110dB input differential mode
rejection at 50Hz or 60Hz
±
2%, or it can be driven by an
external oscillator for a user defined rejection frequency.
The internal oscillator requires no external frequency
setting components.
The converter accepts any external differential reference
voltage from 0.1V to V
CC
for flexible ratiometric and
remote sensing measurement configurations. The full-
scale differential input range is from –0.5V
REF
to 0.5V
REF
.
The reference common mode voltage, V
REFCM
, and the
input common mode voltage, V
INCM
, may be indepen-
dently set anywhere within the GND to V
CC
. The DC
common mode input rejection is better than 140dB.
The LTC2412 communicates through a flexible 3-wire
digital interface which is compatible with SPI and
MICROWIRE
TM
protocols.
I
Direct Sensor Digitizer
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
, 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.
I
2-Channel Differential Input with Automatic
Channel Selection (Ping-Pong)
I
Low Supply Current: 200
μ
A, 4
μ
A in Autosleep
I
Differential Input and Differential Reference with
GND to V
CC
Common Mode Range
I
2ppm INL, No Missing Codes
I
2.5ppm Full-Scale Error and 0.1ppm Offset
I
0.16ppm Noise, 22.5 Effective Number of Bits
I
No Latency: Digital Filter Settles in a Single Cycle and
Each Channel Conversion is Accurate
I
Internal Oscillator—No External Components
Required
I
110dB Min, 50Hz or 60Hz Notch Filter
I
Narrow SSOP-16 Package
I
Single Supply 2.7V to 5.5V Operation
2-Channel Differential Input
24-Bit No Latency
Σ
ADC
V
CC
REF
+
CH0
+
F
O
CH0
–
SCK
REF
–
CH1
+
CH1
–
SDO
GND
CS
1
2
14
4
13
3
5
THERMOCOUPLE
6
7
12
8, 9, 10, 15, 16
11
2412 TA01
= INTERNAL OSC/50Hz REJECTION
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION
3-WIRE
SPI INTERFACE
1
μ
F
2.7V TO 5.5V
LTC2412
V
CC
V
IN
(V)
–1.5
T
R
)
–0.5
0.5
1.5
–1.0
0
1.0
–1.5
–0.5
0.5
1.5
2412 TA02
2.5
–2
–2.5
–1
0
1
2
T
A
= 90
°
C
T
A
= 25
°
C
T
A
= –45
°
C
V
CC
= 5V
REF
= 5V
REF
–
= GND
V
REF
= 5V
V
INCM
= 2.5V
F
O
Total Unadjusted Error vs Input
APPLICATIU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
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| LTC2424I | 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 54-BGA MICROSTAR JUNIOR -40 to 85 |
| LTC2424IG | 16-Bit 2.5-V to 3.3-V/3.3-V To 5-V Level Shifting Transceiver With 3-State Outputs 48-TSSOP -40 to 85 |
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