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LTC2498HUHF#PBF

Description
IC ADC 24BIT 16CH DELTA 38-QFN
Categorysemiconductor    Analog mixed-signal IC   
File Size1MB,38 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC2498HUHF#PBF Overview

IC ADC 24BIT 16CH DELTA 38-QFN

LTC2498HUHF#PBF Parametric

Parameter NameAttribute value
Number of digits24
Sample rate (per second)7.5
Number of inputs8,16
input typeDifferential, single-ended
Data interfaceSPI
ConfigurationMUX-ADC
Radio - S/H:ADC-
Number of A/D converters1
ArchitectureTrigonometric integral
Reference typeexternal
Voltage - Power, Analog2.7 V ~ 5.5 V
Voltage - Power, Digital2.7 V ~ 5.5 V
characteristicTemperature Sensor
Operating temperature-40°C ~ 125°C
Package/casing38-WFQFN Exposed Pad
Supplier device packaging38-QFN(5x7)
Features
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LTC2498
24-Bit 8-/16-Channel
ΔS
ADC with Easy Drive Input
Current Cancellation
Description
The
LTC
®
2498
is a 16-channel (8-differential) 24-bit No
Latency
ΔS™
ADC with Easy Drive technology. The pat-
ented sampling scheme eliminates dynamic input current
errors and the shortcomings of on-chip buffering through
automatic cancellation of differential input current. This
allows large external source impedances, and rail-to-rail
input signals to be directly digitized while maintaining
exceptional DC accuracy.
The LTC2498 includes a high accuracy temperature sensor
and an integrated oscillator. This device can be configured
to measure an external signal (from combinations of 16
analog input channels operating in single ended or dif-
ferential modes) or its internal temperature sensor. The
integrated temperature sensor offers 1/30th °C resolution
and 2°C absolute accuracy.
The LTC2498 allows a wide common mode input range
(0V to V
CC
), independent of the reference voltage. Any
combination of single-ended or differential inputs can be
selected and the first conversion after a new channel is
selected is valid. Access to the multiplexer output enables
optional external amplifiers to be shared between all analog
inputs and auto calibration continuously removes their
associated offset and drift.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
No Latency ∆∑ and Easy Drive are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
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n
n
n
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Up to 8 Differential or 16 Single-Ended Inputs
Easy Drive™ Technology Enables Rail-to-Rail
Inputs with Zero Differential Input Current
Directly Digitizes High Impedance Sensors with
Full Accuracy
600nV RMS Noise
Integrated High Accuracy Temperature Sensor
GND to V
CC
Input/Reference Common Mode Range
Programmable 50Hz, 60Hz or Simultaneous
50Hz/60Hz Rejection Mode
2ppm INL, No Missing Codes
1ppm Offset and 15ppm Full-Scale Error
2x Speed Mode (15Hz Using Internal Oscillator)
No Latency: Digital Filter Settles in a Single Cycle,
Even After a New Channel Is Selected
Single Supply 2.7V to 5.5V Operation (0.8mW)
Internal Oscillator
Tiny QFN 5mm
×
7mm Package
applications
n
n
n
n
Direct Sensor Digitizer
Direct Temperature Measurement
Instrumentation
Industrial Process Control
typical application
Data Acquisition System with Temperature Compensation
2.7V TO 5.5V
CH0
CH1
CH7 16-CHANNEL
MUX
CH8
CH15
COM
TEMPERATURE
SENSOR
MUXOUT/
ADCIN
IN
+
REF
+
24-BIT
∆Σ
ADC
WITH EASY DRIVE
IN
REF
V
CC
SDI
SCK
SDO
CS
f
O
OSC
2498 TA01a
Internal Sensor
Absolute Temperature Error
5
4
ABSOLUTE ERROR (°C)
0.1µF
10µF
3
2
1
0
–1
–2
–3
–4
–5
–55
–30
–5
20
45
70
TEMPERATURE (°C)
95
120
4-WIRE
SPI INTERFACE
MUXOUT/
ADCIN
2498 TA01b
2498fg
For more information
www.linear.com/LTC2498
1

LTC2498HUHF#PBF Related Products

LTC2498HUHF#PBF LTC2498IUHF#TRPBF LTC2498HUHF#TRPBF LTC2498CUHF#TRPBF LTC2498CUHF#PBF LTC2498IUHF#PBF
Description IC ADC 24BIT 16CH DELTA 38-QFN IC ADC 24BIT 16CH 38-QFN IC ADC 24BIT 16CH DELTA 38-QFN IC ADC 24BIT 16CH 38-QFN IC ADC 24BIT 16CH 38-QFN Input type: Differential, Single Ended Number of inputs: 8,16 Sampling rate (sps): 7.5 A/D Number of digits: 24 24-bit, 8-channel/16-channel ΔΣ ADC with Easy Drive input current cancellation
Number of digits 24 24 24 24 24 24
Brand Name - Linear Technology - Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - conform to - conform to conform to conform to
Maker - Linear ( ADI ) - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code - QFN - QFN QFN QFN
package instruction - HVQCCN, LCC38,.2X.28,20 - HVQCCN, LCC38,.2X.28,20 HVQCCN, LCC38,.2X.28,20 HVQCCN, LCC38,.2X.28,20
Contacts - 38 - 38 38 38
Manufacturer packaging code - UHF - UHF UHF UHF
Reach Compliance Code - compliant - compliant compliant compliant
ECCN code - EAR99 - EAR99 EAR99 EAR99
Maximum analog input voltage - 5.5 V - 5.5 V 5.5 V 5.5 V
Maximum conversion time - 81900 µs - 81900 µs 81900 µs 81900 µs
Converter type - ADC, DELTA-SIGMA - ADC, DELTA-SIGMA ADC, DELTA-SIGMA ADC, DELTA-SIGMA
JESD-30 code - R-PQCC-N38 - R-PQCC-N38 R-PQCC-N38 R-PQCC-N38
JESD-609 code - e3 - e3 e3 e3
length - 7 mm - 7 mm 7 mm 7 mm
Humidity sensitivity level - 1 - 1 1 1
Number of analog input channels - 16 - 16 16 16
Number of functions - 1 - 1 1 1
Number of terminals - 38 - 38 38 38
Maximum operating temperature - 85 °C - 70 °C 70 °C 85 °C
Output bit code - BINARY - BINARY BINARY BINARY
Output format - SERIAL - SERIAL SERIAL SERIAL
Package body material - PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - HVQCCN - HVQCCN HVQCCN HVQCCN
Encapsulate equivalent code - LCC38,.2X.28,20 - LCC38,.2X.28,20 LCC38,.2X.28,20 LCC38,.2X.28,20
Package shape - RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE - CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) - 260 - 260 260 260
power supply - 3/5 V - 3/5 V 3/5 V 3/5 V
Certification status - Not Qualified - Not Qualified Not Qualified Not Qualified
Maximum seat height - 0.8 mm - 0.8 mm 0.8 mm 0.8 mm
Nominal supply voltage - 5 V - 5 V 5 V 5 V
surface mount - YES - YES YES YES
technology - CMOS - CMOS CMOS CMOS
Temperature level - INDUSTRIAL - COMMERCIAL COMMERCIAL INDUSTRIAL
Terminal surface - Matte Tin (Sn) - Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - NO LEAD - NO LEAD NO LEAD NO LEAD
Terminal pitch - 0.5 mm - 0.5 mm 0.5 mm 0.5 mm
Terminal location - QUAD - QUAD QUAD QUAD
Maximum time at peak reflow temperature - 30 - 30 30 30
width - 5 mm - 5 mm 5 mm 5 mm
Base Number Matches - 1 - 1 1 1
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