They operate from 2.7V to 5.5V and include an integrated
oscillator, 2ppm INL and 0.2ppm RMS noise. They use
delta-sigma technology and provide single cycle settling
time for multiplexed applications. Through a single pin,
the LTC2414/LTC2418 can be configured for better than
110dB differential mode rejection at 50Hz or 60Hz ±2%,
or they can be driven by an external oscillator for a user-
defined rejection frequency. The internal oscillator requires
no external frequency setting components.
The LTC2414/LTC2418 accept any external differential
reference voltage from 0.1V to V
CC
for flexible ratiomet-
ric and remote sensing measurement applications. They
can be configured to take 4/8 differential channels or
8/16 single-ended channels. The full-scale bipolar input
range is from –0.5V
REF
to 0.5V
REF
. The reference common
mode voltage, V
REFCM
, and the input common mode volt-
age, V
INCM
, may be independently set within GND to V
CC
.
The DC common mode input rejection is better than 140dB.
The LTC2414/LTC2418 communicate through a flexible
4-wire digital interface that is compatible with SPI and
MICROWIRE protocols.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
No Latency ½∑ is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
n
n
n
n
n
n
n
8-/16-Channel Single-Ended or 4-/8-Channel
Differential Inputs (LTC2414/LTC2418)
Low Supply Current (200µA, 4µA in Autosleep)
Differential Input and Differential Reference with
GND to V
CC
Common Mode Range
2ppm INL, No Missing Codes
2.5ppm Full-Scale Error and 0.5ppm Offset
0.2ppm Noise
No Latency: Digital Filter Settles in a Single Cycle
Each Conversion Is Accurate, Even After a New
Channel Is Selected
Single Supply 2.7V to 5.5V Operation
Internal Oscillator—No External Components
Required
110dB Min, 50Hz/60Hz Notch Filter
applicaTions
n
n
n
n
n
n
n
n
Direct Sensor Digitizer
Weight Scales
Direct Temperature Measurement
Gas Analyzers
Strain Gauge Transducers
Instrumentation
Data Acquisition
Industrial Process Control
Typical applicaTion
2.7V TO 5.5V
11
21 CH0
22 CH1
•
•
•
28 CH7
1 CH8
•
•
•
8 CH15
10 COM
12 REF
–
15
GND
REF
+
9
V
CC
F
O
SDI
SCK
SDO
CS
19
20
18
17
16
1µF
V
CC
Total Unadjusted Error
vs Input Voltage
3
2
TUE (ppm OF V
REF
)
1
0
T
A
= –45°C
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
V
CC
= 5V
V
REF
= 5V
V
INCM
= V
REFCM
= 2.5V
F
O
= GND
T
A
= 25°C
THERMOCOUPLE
16-CHANNEL
MUX
+
–
DIFFERENTIAL
24-BIT ∑ ADC
4-WIRE
SPI INTERFACE
–1
–2
T
A
= 85°C
LTC2418
241418 TA01a
–3
–2.5 –2 –1.5 –1 –0.5 0 0.5 1.0 1.5 2.0 2.5
INPUT VOLTAGE (V)
2414/18 TA01b
241418fb
For more information
www.linear.com/LTC2414
1
LTC2414/LTC2418
absoluTe MaxiMuM raTings
(Notes 1, 2)
Supply Voltage (V
CC
) to GND ....................... –0.3V to 7V
Analog Input Voltage to GND ........–0.3V to (V
CC
+ 0.3V)
Reference Input Voltage to GND ...–0.3V to (V
CC
+ 0.3V)
Digital Input Voltage to GND .........–0.3V to (V
CC
+ 0.3V)
Digital Output Voltage to GND.......–0.3V to (V
CC
+ 0.3V)
Operating Temperature Range
LTC2414/LTC2418C .................................. 0°C to 70°C
LTC2414/LTC2418I ...............................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
pin conFiguraTion
TOP VIEW
NC
NC
NC
NC
NC
NC
NC
NC
V
CC
1
2
3
4
5
6
7
8
9
28 CH7
27 CH6
26 CH5
25 CH4
24 CH3
23 CH2
22 CH1
21 CH0
20 SDI
19 F
O
18 SCK
17 SDO
16 CS
15 GND
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
V
CC
1
2
3
4
5
6
7
8
9
TOP VIEW
28 CH7
27 CH6
26 CH5
25 CH4
24 CH3
23 CH2
22 CH1
21 CH0
20 SDI
19 F
O
18 SCK
17 SDO
16 CS
15 GND
COM 10
REF
+
11
REF
–
12
NC 13
NC 14
COM 10
REF
+
11
REF
–
12
NC 13
NC 14
GN PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 110°C/W
GN PACKAGE
28-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 110°C/W
orDer inForMaTion
LEAD FREE FINISH
LTC2414CGN#PBF
LTC2414IGN#PBF
LTC2418CGN#PBF
LTC2418IGN#PBF
TAPE AND REEL
LTC2414CGN#TRPBF
LTC2414IGN#TRPBF
LTC2418CGN#TRPBF
LTC2418IGN#TRPBF
PART MARKING*
2414
2414
2418
2418
PACKAGE DESCRIPTION
28-Lead Plastic SSOP
28-Lead Plastic SSOP
28-Lead Plastic SSOP
28-Lead Plastic SSOP
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
2
241418fb
For more information
www.linear.com/LTC2414
LTC2414/LTC2418
The
l
denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
PARAMETER
Resolution (No Missing Codes)
Integral Nonlinearity
CONDITIONS
0.1V ≤ V
REF
≤ V
CC
, –0.5
•
V
REF
≤ V
IN
≤ 0.5
•
V
REF
(Note 5)
4.5V ≤ V
CC
≤ 5.5V, REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V (Note 6)
5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, REF
–
= GND, V
INCM
= 2.5V (Note 6)
REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V (Note 6)
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
+
= IN
–
≤ V
CC
(Note 14)
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
+
= IN
–
≤ V
CC
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.75
•
REF
+
, IN
–
= 0.25
•
REF
+
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.75
•
REF
+
, IN
–
= 0.25
•
REF
+
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.25
•
REF
+
, IN
–
= 0.75
•
REF
+
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
IN
+
= 0.25
•
REF
+
, IN
–
= 0.75
•
REF
+
4.5V ≤ V
CC
≤ 5.5V, REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V
5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, REF
–
= GND, V
INCM
= 2.5V
REF
+
= 2.5V, REF
–
= GND, V
INCM
= 1.25V
5V ≤ V
CC
≤ 5.5V, REF
+
= 5V, V
REF
– = GND,
GND ≤ IN
–
= IN
+
≤ 5V (Note 13)
l
l
l
l
elecTrical characTerisTics
MIN
24
TYP
1
2
5
2.5
20
2.5
0.03
2.5
0.03
3
3
6
1
MAX
UNITS
Bits
ppm of V
REF
ppm of V
REF
ppm of V
REF
µV
nV/°C
14
10
Offset Error
Offset Error Drift
Positive Full-Scale Error
Positive Full-Scale Error Drift
Negative Full-Scale Error
Negative Full-Scale Error Drift
Total Unadjusted Error
l
12
ppm of V
REF
ppm of V
REF
/°C
12
ppm of V
REF
ppm of V
REF
/°C
ppm of V
REF
ppm of V
REF
ppm of V
REF
µV
RMS
Output Noise
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
PARAMETER
Input Common Mode Rejection DC
Input Common Mode Rejection
60Hz ±2%
Input Common Mode Rejection
50Hz ±2%
Input Normal Mode Rejection
60Hz ±2%
Input Normal Mode Rejection
50Hz ±2%
Reference Common Mode
Rejection DC
Power Supply Rejection, DC
Power Supply Rejection, 60Hz ±2%
Power Supply Rejection, 50Hz ±2%
CONDITIONS
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
–
= IN
+
≤ 5V (Note 5)
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
–
= IN
+
≤ 5V (Notes 5, 7)
2.5V ≤ REF
+
≤ V
CC
, REF
–
= GND,
GND ≤ IN
–
= IN
+
≤ 5V (Notes 5, 8)
(Notes 5, 7)
(Notes 5, 8)
2.5V ≤ REF
+
≤ V
CC
, GND ≤ REF
–
≤ 2.5V,
V
REF
= 2.5V, IN
–
= IN
+
= GND (Note 5)
REF
+
= 2.5V, REF
–
= GND, IN
–
= IN
+
= GND
converTer characTerisTics
The
l
denotes specifications which apply over the full operating
MIN
l
l
l
l
l
l
TYP
140
MAX
UNITS
dB
dB
dB
130
140
140
110
110
130
140
140
140
110
120
120
dB
dB
dB
dB
dB
dB
REF
+
= 2.5V, REF
–
= GND, IN
–
= IN
+
= GND (Note 7)
REF
+
= 2.5V, REF
–
= GND, IN
–
= IN
+
= GND (Note 8)
241418fb
For more information
www.linear.com/LTC2414
3
LTC2414/LTC2418
analog inpuT anD reFerence
SYMBOL
IN
+
IN
–
V
IN
REF
+
REF
–
V
REF
C
S
(IN
+
)
C
S
(IN
–
)
C
S
(REF
+
)
C
S
(REF
–
)
I
DC_LEAK
(IN
+
)
I
DC_LEAK
(IN
–
)
I
DC_LEAK
(REF
+
)
I
DC_LEAK
(REF
–
)
PARAMETER
Absolute/Common Mode IN
+
Voltage
Absolute/Common Mode IN
–
Voltage
Input Differential Voltage Range
(IN
+
– IN
–
)
Absolute/Common Mode REF
+
Voltage
Absolute/Common Mode REF
–
Voltage
Reference Differential Voltage Range
(REF
+
– REF
–
)
IN
+
Sampling Capacitance
IN
–
Sampling Capacitance
REF
+
Sampling Capacitance
REF
–
Sampling Capacitance
IN
+
DC Leakage Current
IN
–
DC Leakage Current
REF
+
DC Leakage Current
REF
–
DC Leakage Current
Off Channel to In Channel Isolation
(R
IN
= 100Ω)
t
OPEN
I
S(OFF)
MUX Break-Before-Make Interval
Channel Off Leakage Current
CS
= V
CC
= 5.5V, IN
+
= GND
CS
= V
CC
= 5.5V, IN
–
= 5V
CS
= V
CC
= 5.5V, REF
+
= 5V
CS
= V
CC
= 5.5V, REF
–
= GND
DC
1Hz
f
S
= 15,3600Hz
2.7V ≤ V
CC
≤ 5.5V
Channel at V
CC
and GND
l
l
l
l
l
The
l
denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
CONDITIONS
l
l
l
l
l
l
MIN
GND – 0.3
GND – 0.3
–V
REF
/2
0.1
GND
0.1
TYP
MAX
V
CC
+ 0.3
V
CC
+ 0.3
–V
REF
/2
V
CC
V
CC
– 0.1
V
CC
UNITS
V
V
V
V
V
V
pF
pF
pF
pF
18
18
18
18
–10
–10
–10
–10
1
1
1
1
140
140
140
70
–10
100
1
300
10
10
10
10
10
nA
nA
nA
nA
dB
dB
dB
ns
nA
DigiTal inpuT anD DigiTal ouTpuTs
SYMBOL
V
IH
V
IL
V
IH
V
IL
I
IN
PARAMETER
High Level Input Voltage
CS,
F
O
, SDI
Low Level Input Voltage
CS,
F
O
, SDI
High Level Input Voltage
SCK
Low Level Input Voltage
SCK
Digital Input Current
CS,
F
O
, SDI
Digital Input Current
SCK
C
IN
Digital Input Capacitance
CS,
F
O
, SDI
Digital Input Capacitance
SCK
V
OH
High Level Output Voltage
SDO
(Note 9)
I
O
= – 800µA
CONDITIONS
2.7V ≤ V
CC
≤ 5.5V
2.7V ≤ V
CC
≤ 3.3V
4.5V ≤ V
CC
≤ 5.5V
2.7V ≤ V
CC
≤ 5.5V
The
l
denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
MIN
l
l
l
l
l
l
TYP
MAX
UNITS
V
V
2.5
2.0
0.8
0.6
2.5
2.0
0.8
0.6
–10
–10
10
10
10
10
V
V
2.7V ≤ V
CC
≤ 5.5V (Note 9)
2.7V ≤ V
CC
≤ 3.3V (Note 9)
4.5V ≤ V
CC
≤ 5.5V (Note 9)
2.7V ≤ V
CC
≤ 5.5V (Note 9)
0V ≤ V
IN
≤ V
CC
0V ≤ V
IN
≤ V
CC
(Note 9)
V
V
V
V
µA
µA
pF
pF
V
l
V
CC
–0.5
4
241418fb
For more information
www.linear.com/LTC2414
LTC2414/LTC2418
DigiTal inpuT anD DigiTal ouTpuTs
SYMBOL
V
OL
V
OH
V
OL
I
OZ
PARAMETER
Low Level Output Voltage
SDO
High Level Output Voltage
SCK
Low Level Output Voltage
SCK
Hi-Z Output Leakage
SDO
CONDITIONS
I
O
= 1.6mA
I
O
= – 800µA (Note 10)
I
O
= 1.6mA (Note 10)
l
l
l
l
The
l
denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
MIN
TYP
MAX
0.4
V
CC
– 0.5
0.4
–10
10
UNITS
V
V
V
µA
The
l
denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL
V
CC
I
CC
PARAMETER
Supply Voltage
Supply Current
Conversion Mode
Sleep Mode
Sleep Mode
CS
= 0V (Note 12)
CS
= V
CC
(Note 12)
CS
= V
CC
, 2.7V ≤ V
CC
≤ 3.3V (Note 12)
CONDITIONS
l
l
l
power requireMenTs
MIN
2.7
TYP
MAX
5.5
UNITS
V
µA
µA
µA
200
4
2
300
10
TiMing characTerisTics
SYMBOL
f
EOSC
t
HEO
t
LEO
t
CONV
PARAMETER
External Oscillator Frequency Range
External Oscillator High Period
External Oscillator Low Period
Conversion Time
The
l
denotes specifications which apply over the full operating temperature
I suddenly found that the fr5739 simulation with MSP430 LaunchPad could not be simulated normally. The simulation pins are DVCC, DVSS, P2.0, P2.1, TEST, RST. Is there an error in the pins? Please see ...
I need help. What is the principle of the waveform generator in the design of a waveform generator based on DSP? What is the principle of generating a sine wave? What is the principle of generating a ...
I modified an example program: I used the following statement (in evc) #pragma comment(lib, "ws2_32.lib"), but the following error occurred. cannot open file 'ws2_32.lib ' I filled in setting->link->O...
I am a newbie, I would like to ask the experts a few questions: 1. The operating system is used to coordinate processes and schedule CPU to process processes. Each process is processed by the CPU in t...
JLink can download the program, but the program cannot run. Disconnect JLink to power the MCU, and the program runs normally. Check the download log and it reports a warning **JLink Warning: S_RESET_S...
At present, most RTOS are not based on MMU or MPU, that is to say, there is no memory protection mechanism. Without a memory protection mechanism, the most worrying thing is the overflow of the task s...
Electric motors and internal combustion engines of the same power have similar torque levels. High power requires high torque, and torque determines a vehicle's acceleration speed, commonly known a...[Details]
Current Development Status of DVR Market
A DVR, or digital video recorder, uses a hard disk for recording, unlike traditional analog video recorders. It's often called a DVR because it's a com...[Details]
Laird Thermal Systems has introduced the HiTemp ET series Peltier cooler modules, which can operate at high temperatures and provide on-site cooling for sensitive electronic devices.
Dig...[Details]
Electric vehicles are becoming increasingly popular, with increasingly longer ranges. There are two ways to charge electric vehicles: slow charging and fast charging. Which is the most suitable? Sl...[Details]
With the increasing number of new energy vehicles on the road, the deployment of supporting facilities for these vehicles has accelerated, and new energy vehicles have gradually entered the vision ...[Details]
My career has been closely tied to the semiconductor industry. From product management to content marketing, I've provided countless forecasts and predictions across a variety of roles. Whethe...[Details]
With the advancement of science and technology and the promotion of green, energy-saving, and circular development, the demand for precise control and accurate measurement is increasing. In the pow...[Details]
Consumer demand for premium listening experiences has driven rapid evolution in the wireless headphone market in recent years. Hybrid designs, which utilize two drivers per earbud to enhance sound ...[Details]
From time to time, I see some audiophiles spending a lot of money or a lot of time to DIY speakers, but the results are not what they want. Below I list some of the small experiences I summarized b...[Details]
introduction
A common voltage regulator is a three-terminal one. Its function is to step down the voltage and stabilize it at a fixed output value. Voltage regulators are commonly available in...[Details]
0 Introduction
With a rapidly aging population, a young couple is now required to care for an increasing number of elderly people, leading to a growing difficulty in providing care for them. E...[Details]
The automotive driveshaft is a crucial connecting component in the automotive mechanical system. It is a circular component that allows for connection or assembly, as well as movement and rotation....[Details]
We know that the power output by the engine does not directly act on the wheels to drive the car, but needs to pass through a series of power transmission mechanisms. So how is the power transmitte...[Details]
As my country's industrialization continues to improve, environmental pollution is also facing tremendous pressure. In recent years, national environmental protection policies have become increasin...[Details]
EVTank predicts that all-solid-state batteries will achieve small-scale mass production in 2027 and large-scale shipments by 2030. Global solid-state battery shipments will reach 614.1GWh, of which...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
