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LTC2442IG#TR

Description
LTC2442 - 24-Bit High Speed 4-Channel Delta Sigma ADC with Integrated Amplifier; Package: SSOP; Pins: 36; Temperature Range: -40°C to 85°C
CategoryAnalog mixed-signal IC    converter   
File Size377KB,32 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC2442IG#TR Overview

LTC2442 - 24-Bit High Speed 4-Channel Delta Sigma ADC with Integrated Amplifier; Package: SSOP; Pins: 36; Temperature Range: -40°C to 85°C

LTC2442IG#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
Parts packaging codeSSOP
package instructionSSOP, SSOP36,.3
Contacts36
Manufacturer packaging codeG
Reach Compliance Codenot_compliant
ECCN codeEAR99
Maximum analog input voltage2.75 V
Minimum analog input voltage-0.05 V
Maximum conversion time0.17 µs
Converter typeADC, DELTA-SIGMA
JESD-30 codeR-PDSO-G36
JESD-609 codee0
length12.8 mm
Humidity sensitivity level1
Number of analog input channels4
Number of digits24
Number of functions1
Number of terminals36
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output bit codeBINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP36,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
power supply5 V
Certification statusNot Qualified
Maximum seat height2 mm
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width5.3 mm
Base Number Matches1
FEATURES
LTC2442
24-Bit High Speed
4-Channel
ΔΣ
ADC
with Integrated Amplifier
DESCRIPTIO
The LTC
®
2442 is an ultra high precision, variable speed,
24-bit
ΔΣ
TM
ADC with integrated amplifier. The amplifier
can be configured as a buffer for easy input drive of high
impedance sensors. 1 part-per-million (ppm) linearity is
achievable when the amplifier is configured in unity gain.
External resistors can be used to set a gain for increased
resolution of low level input signals. The positive and
negative amplifier supply pins may be tied directly to V
CC
(4.5V to 5.5V) and GND or biased above V
CC
and below
GND for rail-to-rail input signals.
The proprietary
ΔΣ
architecture ensures stable DC ac-
curacy through continuous transparent calibration. Ten
speed/resolution combinations from 6.9Hz/220nV
RMS
to
3.5kHz/25µV
RMS
can be selected with no latency or shift
in DC accuracy. Additionally, a 2X speed mode can be
selected enabling output rates up to 7kHz (8kHz with an
external oscillator) with one cycle latency.
Any combination of single-ended (up to 4 inputs) or dif-
ferential (up to 2 inputs) can be selected with a common
mode input range from ground to V
CC
. While operating in
the 1X speed mode the first conversion following a new
speed/resolution or channel selection is valid.
, LTC and LT are registered trademarks of Linear Technology Corporation.
No Latency
∆Σ
is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6140950, 6169506, 6411242, 6639526.
1ppm Linearity with No Missing Codes
Integrated Amplifier for Direct Sensor Digitization
2 Differential or 4 Single-Ended Input Channels
Up to 8kHz Output Rate
Up to 4kHz Multiplexing Rate
Selectable Speed/Resolution
2µV
RMS
Noise at 1.76kHz Output Rate
220nV
RMS
Noise at 13.8Hz Output Rate with
Simultaneous 50Hz/60Hz Rejection
Guaranteed Modulator Stability and Lock-Up
Immunity for any Input and Reference Conditions
<5µV Offset (4.5V < V
CC
< 5.5V, –40°C to 85°C)
Differential Input and Differential Reference with GND
to V
CC
Common Mode Range
No Latency Mode, Each Conversion is Accurate Even
After a New Channel is Selected
Internal Oscillator—No External Components
36-Lead SSOP Package
APPLICATIO S
Auto Ranging 6-Digit DVMs
High Speed Multiplexing
Weight Scales
Direct Temperature Measurement
High Speed Data Acquisition
TYPICAL APPLICATIO
0.1µF
High Precision Data Acquisition System
5
4
4.5V TO 15V
4.5V TO 5.5V
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
(SIMULTANEOUS 50Hz/60Hz
REJECTION AT 6.9Hz OUTPUT RATE)
4-WIRE
SPI INTERFACE
ERROR (ppm)
V
+
V
REF
+
CH0
HIGH Z
2-CHANNEL
DIFFERENTIAL/
4-CHANNEL
SINGLE ENDED
CH1
CH2
CH3
COM
V
V
REF
AUTO-CAL
+
VARIABLE SPEED/
RESOLUTION
DIFFERENTIAL
24-BIT
∆Σ
ADC
V
CC
F
O
SDI
SCK
SDO
CS
GND LTC2442
2442 TA01
–15V TO 0V
0.1µF
U
U
+
U
LTC2442 Integral Non-Linearity
V
INCM
= 2.048V
V
REF
= 4.096V
V
CC
= 5V
V
+
= 5V
V
= 0V
3
2
1
0
–1
–2
–3
–4
–5
–2.048
0
–1.024
1.024
V
IN
DIFFERENTIAL (V)
2.048
2442 TA02
2442f
1

LTC2442IG#TR Related Products

LTC2442IG#TR LTC2442CG#TR
Description LTC2442 - 24-Bit High Speed 4-Channel Delta Sigma ADC with Integrated Amplifier; Package: SSOP; Pins: 36; Temperature Range: -40°C to 85°C LTC2442 - 24-Bit High Speed 4-Channel Delta Sigma ADC with Integrated Amplifier; Package: SSOP; Pins: 36; Temperature Range: 0°C to 70°C
Brand Name Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible
Parts packaging code SSOP SSOP
package instruction SSOP, SSOP36,.3 SSOP, SSOP36,.3
Contacts 36 36
Manufacturer packaging code G G
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
Maximum analog input voltage 2.75 V 2.75 V
Minimum analog input voltage -0.05 V -0.05 V
Maximum conversion time 0.17 µs 0.17 µs
Converter type ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code R-PDSO-G36 R-PDSO-G36
JESD-609 code e0 e0
length 12.8 mm 12.8 mm
Humidity sensitivity level 1 1
Number of analog input channels 4 4
Number of digits 24 24
Number of functions 1 1
Number of terminals 36 36
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Output bit code BINARY BINARY
Output format SERIAL SERIAL
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP
Encapsulate equivalent code SSOP36,.3 SSOP36,.3
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 235 235
power supply 5 V 5 V
Certification status Not Qualified Not Qualified
Maximum seat height 2 mm 2 mm
Nominal supply voltage 5 V 5 V
surface mount YES YES
technology CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING
Terminal pitch 0.65 mm 0.65 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 20 20
width 5.3 mm 5.3 mm
Base Number Matches 1 1
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