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LTC1859IG

Description
8-Channel Single ADC SAR 100ksps 16-bit Serial Automotive 28-Pin SSOP
File Size222KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC1859IG Overview

8-Channel Single ADC SAR 100ksps 16-bit Serial Automotive 28-Pin SSOP

LTC1859IG Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
Converter TypeGeneral Purpose
ArchitectureSAR
Resolution16bit
Number of ADCs1
Number of Input Channels8/4|4/2
Sampling Rate100ksps
Digital Interface TypeSerial (SPI, Microwire)
Input TypeVoltage
Input Signal TypeDifferential|Single-Ended
Voltage ReferenceInternal|External
Polarity of Input VoltageBipolar|Unipolar
Voltage Supply SourceAnalog and Digital
Input Voltage±5V/±10V|5V/10V
Minimum Single Supply Voltage (V)4.75
Typical Single Supply Voltage (V)5
Maximum Single Supply Voltage (V)5.25
Typical Power Dissipation (mW)40
Maximum Power Dissipation (mW)500
Integral Nonlinearity Error±3LSB
Full Scale Error±0.75%FSR
Signal to Noise Ratio87dB(Typ)
No Missing Codes (bit)15
Sample and HoldYes
Single-Ended InputYes
Digital Supply SupportYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
Pin Count28
Standard Package NameSOP
Supplier PackageSSOP
MountingSurface Mount
Package Height2(Max) - 0.05(Min)
Package Length10.5(Max)
Package Width5.6(Max)
PCB changed28
Lead ShapeGull-wing
LTC1857/LTC1858/LTC1859
8-Channel, 12-/14-/16-Bit,
100ksps SoftSpan A/D
Converters with Shutdown
FEATURES
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DESCRIPTION
The LTC
®
1857/LTC1858/LTC1859 are 8-channel, low
power, 12-/14-/16-bit, 100ksps, analog-to-digital convert-
ers (ADCs). These SoftSpan™ ADCs can be software-
programmed for 0V to 5V, 0V to 10V, ±5V or ±10V input
spans and operate from a single 5V supply. The 8-channel
multiplexer can be programmed for single-ended inputs
or pairs of differential inputs or combinations of both. In
addition, all channels are fault protected to ±25V. A fault
condition on any channel will not affect the conversion
result of the selected channel.
An onboard high performance sample-and-hold and pre-
cision reference minimize external components. The low
40mW power dissipation is made even more attractive with
two user selectable power shutdown modes. DC specifica-
tions include ±3LSB INL for the LTC1859, ±1.5LSB INL
for the LTC1858 and ±1LSB for the LTC1857.
The internal clock is trimmed for 5μs maximum conversion
time and the sampling rate is guaranteed at 100ksps. A
separate convert start input and data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors.
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation. SoftSpan is
a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
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Sample Rate: 100ksps
8-Channel Multiplexer with ±25V Protection
Single 5V Supply
Software-Programmable Input Ranges:
0V to 5V, 0V to 10V, ±5V or ±10V
Single Ended or Differential
±3LSB INL for the LTC1859, ±1.5LSB INL for the
LTC1858, ±1LSB INL for the LTC1857
Power Dissipation: 40mW (Typ)
SPI/MICROWIRE™ Compatible Serial I/O
Power Shutdown: Nap and Sleep
Signal-to-Noise Ratio: 87dB (Typ) for the LTC1859
Operates with Internal or External Reference
Internal Synchronized Clock
28-Pin SSOP Package
APPLICATIONS
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Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing
TYPICAL APPLICATION
100kHz, 12-Bit/14-Bit/16-Bit Sampling ADC
2.0
COM
CONVST
CH0 LTC1857/
RD
CH1 LTC1858/ SCK
CH2 LTC1859 SDI
CH3
DGND
CH4
SDO
CH5
BUSY
CH6
OV
DD
DV
DD
CH7
AV
DD
MUXOUT
+
MUXOUT
AGND3
ADC
+
AGND2
ADC
REFCOMP
AGND1
V
REF
1.5
μP
CONTROL
LINES
INL (LSB)
1.0
0.5
0
–0.5
–1.0
–1.5
2.5V
1μF
10μF
–2.0
–32768
–16384
0
CODE
16384
32767
1859 TA02
LTC1859 Typical INL Curve
SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
(0V TO 5V, 0V TO 10V,
±5V OR ±10V)
10μF
10μF
3V TO 5V
5V
5V
10μF
185789fa
1

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Description 8-Channel Single ADC SAR 100ksps 16-bit Serial Automotive 28-Pin SSOP ADC, Proprietary Method, 12-Bit, 1 Func, 8 Channel, Serial Access, PDSO28 8-Channel Single ADC SAR 100ksps 12-bit Serial 28-Pin SSOP 8-Channel Single ADC SAR 100ksps 16-bit Serial Automotive 28-Pin SSOP 8-Channel Single ADC SAR 100ksps 16-bit Serial Automotive 28-Pin SSOP T/R
EU restricts the use of certain hazardous substances Not Compliant - Not Compliant Not Compliant Not Compliant
ECCN (US) EAR99 - EAR99 EAR99 EAR99
Part Status Unconfirmed - Unconfirmed Unconfirmed Unconfirmed
HTS 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 8542.39.00.01
SVHC Yes - Yes Yes Yes
SVHC Exceeds Threshold Yes - Yes Yes Yes
Converter Type General Purpose - General Purpose General Purpose General Purpose
Architecture SAR - SAR SAR SAR
Resolution 16bit - 12bit 16bit 16bit
Number of ADCs 1 - 1 1 1
Number of Input Channels 8/4|4/2 - 8/4|4/2 8/4|4/2 4/2|8/4
Sampling Rate 100ksps - 100ksps 100ksps 100ksps
Digital Interface Type Serial (SPI, Microwire) - Serial (SPI, Microwire) Serial (SPI, Microwire) Serial (SPI, Microwire)
Input Type Voltage - Voltage Voltage Voltage
Input Signal Type Differential|Single-Ended - Single-Ended|Differential Single-Ended|Differential Differential|Single-Ended
Voltage Reference Internal|External - External|Internal Internal|External External|Internal
Polarity of Input Voltage Bipolar|Unipolar - Unipolar|Bipolar Unipolar|Bipolar Bipolar|Unipolar
Voltage Supply Source Analog and Digital - Analog and Digital Analog and Digital Analog and Digital
Input Voltage ±5V/±10V|5V/10V - 5V/10V|±5V/±10V 5V/10V|±5V/±10V ±5V/±10V|5V/10V
Minimum Single Supply Voltage (V) 4.75 - 4.75 4.75 4.75
Typical Single Supply Voltage (V) 5 - 5 5 5
Maximum Single Supply Voltage (V) 5.25 - 5.25 5.25 5.25
Typical Power Dissipation (mW) 40 - 40 40 40
Maximum Power Dissipation (mW) 500 - 500 500 500
Integral Nonlinearity Error ±3LSB - ±1LSB ±3LSB ±3LSB
Full Scale Error ±0.75%FSR - ±0.75%FSR ±0.75%FSR ±0.75%FSR
Signal to Noise Ratio 87dB(Typ) - - 87dB(Typ) 87dB(Typ)
No Missing Codes (bit) 15 - 12 15 15
Sample and Hold Yes - Yes Yes Yes
Single-Ended Input Yes - Yes Yes Yes
Digital Supply Support Yes - Yes Yes Yes
Minimum Operating Temperature (°C) -40 - -40 - -40
Maximum Operating Temperature (°C) 85 - 85 70 85
Supplier Temperature Grade Industrial - Industrial Commercial Industrial
Pin Count 28 - 28 28 28
Standard Package Name SOP - SOP SOP SOP
Supplier Package SSOP - SSOP SSOP SSOP
Mounting Surface Mount - Surface Mount Surface Mount Surface Mount
Package Height 2(Max) - 0.05(Min) - 2(Max) - 0.05(Min) 2(Max) - 0.05(Min) 2(Max) - 0.05(Min)
Package Length 10.5(Max) - 10.5(Max) 10.5(Max) 10.5(Max)
Package Width 5.6(Max) - 5.6(Max) 5.6(Max) 5.6(Max)
PCB changed 28 - 28 28 28
Lead Shape Gull-wing - Gull-wing Gull-wing Gull-wing
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