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LTC2435IGN#PBF

Description
IC ADC DIFF I/REF 20BIT 16-SSOP
CategoryAnalog mixed-signal IC    converter   
File Size635KB,42 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC2435IGN#PBF Overview

IC ADC DIFF I/REF 20BIT 16-SSOP

LTC2435IGN#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP, SSOP16,.25
Contacts16
Manufacturer packaging codeGN
Reach Compliance Codecompliant
ECCN codeEAR99
Is SamacsysN
Maximum analog input voltage2.75 V
Minimum analog input voltage-2.75 V
Maximum conversion time81900 µs
Converter typeADC, DELTA-SIGMA
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length4.8895 mm
Maximum linear error (EL)0.002%
Humidity sensitivity level1
Number of analog input channels1
Number of digits20
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output bit codeBINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply3/5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.899 mm
Base Number Matches1
FeaTures
n
LTC2435/LTC2435-1
20-Bit No Latency
∆∑™
ADCs with Differential Input and
Differential Reference
DescripTion
The
LTC
®
2435/LTC2435-1
are 2.7V to 5.5V micropower
20-bit differential ∆∑ analog to digital converters with
integrated oscillator, 3ppm INL and 0.8ppm RMS noise.
They use delta-sigma technology and provide single
cycle settling time for multiplexed applications. Through
a single pin, the LTC2435 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 LTC2435-1
can be configured for better than 87dB input differential
mode rejection over the range of 49Hz to 61.2Hz (50Hz
and 60Hz ±2% simultaneously). The internal oscillator
requires no external frequency setting components.
The converters accept any external differential reference
voltage from 0.1V to V
CC
for flexible ratiometric and re-
mote 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 independently set
anywhere within the GND to V
CC
range of the LTC2435/
LTC2435-1. The DC common mode input rejection is
better than 120dB.
The LTC2435/LTC2435-1 communicate through a flexible
3-wire digital interface which is compatible with SPI and
MICROWIRE™ protocols.
L,
LT, LTC and LTM are registered trademarks and C-Load and No Latency ∆
are trademarks
of Linear Technology Corporation. Protected by U.S. Patents including 6140950, 6169506.
n
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2× Speed Up Version of the LTC2430: 15Hz Output
Rate, 60Hz Notch—LTC2435; 13.75Hz Output Rate,
Simultaneous 50Hz/60Hz Notch—LTC2435-1
Differential Input and Differential Reference with
GND to V
CC
Common Mode Range
3ppm INL, No Missing Codes
10ppm Gain Error
0.8ppm Noise
Single Conversion Settling Time for Multiplexed
Applications
Internal Oscillator—No External Components Required
Single Supply 2.7V to 5.5V Operation
Low Supply Current (200µA,4µA in Auto Sleep)
20-Bit ADC in Narrow SSOP-16 Package
(SO-8 Footprint)
Direct Sensor Digitizer
Weight Scales
Direct Temperature Measurement
Gas Analyzers
Strain Gage Transducers
Instrumentation
Data Acquisition
Industrial Process Control
6-Digit DVMs
applicaTions
n
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Typical applicaTions
2.7V TO 5.5V
1μF
2
V
CC
F
O
14
V
CC
Integral Nonlinearity vs Input
10
8
6
INL (ppm OF V
REF
)
4
2
0
–2
–4
–6
–8
2435 TA01
LTC2435/
LTC2435-1
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG INPUT RANGE
–0.5V
REF
TO 0.5V
REF
3
4
5
6
REF
+
REF
IN
+
IN
GND
SDO
CS
12
11
SCK
13
= INTERNAL OSC/50Hz REJECTION (LTC2435)
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/60Hz REJECTION (LTC2435)
= INTERNAL 50Hz/60Hz REJECTION (LTC2435-1)
T
A
= 25°C
T
A
= 85°C
T
A
= –45°C
F
O
= GND
V
CC
= 5V
V
REF
= 5V
V
INCM
= V
INCM
= 2.5V
–1.5
–0.5
0.5
1.5
INPUT VOLTAGE (V)
2.5
2435 TA01b
3-WIRE
SPI INTERFACE
1, 7, 8, 9, 10, 15, 16
–10
–2.5
24351fc
For more information
www.linear.com/LTC2435
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