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LTC1854CG

Description
8-channel, ??10v input 12-/14-/16-bit, 100ksps adc converters with shutdown
CategoryAnalog mixed-signal IC    converter   
File Size295KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC1854CG Overview

8-channel, ??10v input 12-/14-/16-bit, 100ksps adc converters with shutdown

LTC1854CG Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP, SSOP28,.3
Contacts28
Manufacturer packaging codeG
Reach Compliance Codenot_compliant
ECCN codeEAR99
Maximum analog input voltage10 V
Minimum analog input voltage-10 V
Maximum conversion time5 µs
Converter typeADC, PROPRIETARY METHOD
JESD-30 codeR-PDSO-G28
JESD-609 codee0
length10.2 mm
Maximum linear error (EL)0.0244%
Humidity sensitivity level1
Number of analog input channels8
Number of digits12
Number of functions1
Number of terminals28
Maximum operating temperature70 °C
Minimum operating temperature
Output bit code2\'S COMPLEMENT BINARY
Output formatSERIAL
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP28,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
power supply5 V
Certification statusNot Qualified
Sampling rate0.1 MHz
Sample and hold/Track and holdSAMPLE
Maximum seat height2 mm
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width5.3 mm
LTC1854/LTC1855/LTC1856
8-Channel,
±10V
Input
12-/14-/16-Bit, 100ksps ADC
Converters with Shutdown
DESCRIPTIO
The LTC
®
1854/LTC1855/LTC1856 are 8-channel, low
power, 12-/14-/16-bit, 100ksps, analog-to-digital con-
verters (ADCs). These ADCs operate from a single 5V
supply and the 8-channel multiplexer can be programmed
for single-ended inputs, pairs of differential inputs, or
combinations of both. In addition, all channels are fault
protected to
±30V.
A fault condition on any channel will
not affect the conversion result of the selected channel.
An onboard precision reference minimizes external com-
ponents. Power dissipation is 40mW at 100ksps and lower
in two power shutdown modes (27.5mW in Nap mode and
40mW in Sleep mode.) DC specifications include
±3LSB
INL for the LTC1856,
±1.5LSB
INL for the LTC1855 and
±1LSB
for the LTC1854.
The internal clock is trimmed for 5ms maximum conver-
sion 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.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
Single 5V Supply
Sample Rate: 100ksps
8-Channel Multiplexer with
±30V
Protection
±10V
Bipolar Input Range
Single Ended or Differential
±3LSB
INL for the LTC1856,
±1.5LSB
INL for the
LTC1855,
±1LSB
INL for the LTC1854
Power Dissipation: 40mW (Typ)
SPI/MICROWIRE
TM
Compatible Serial I/O
Power Shutdown: Nap and Sleep
SINAD: 87dB (LTC1856)
Operates with Internal or External Reference
Internal Synchronized Clock
28-Pin SSOP Package
APPLICATIO S
Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing
TYPICAL APPLICATIO
100kHz, 12-Bit/14-/16-Bit Sampling ADC
2.0
SOFTWARE-PROGRAMMABLE
SINGLE-ENDED OR
DIFFERENTIAL INPUTS
±10V
BIPOLAR INPUT RANGE
COM
CONVST
CH0 LTC1854/ RD
CH1 LTC1855/ SCK
CH2 LTC1856 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
INL (LSB)
μP
CONTROL
LINES
3V TO 5V
5V
5V
0.1μF
10μF
10μF
0.1μF
10μF
0.1μF
2.5V
1μF
10μF
0.1μF
U
U
U
LTC1856 Typical INL Curve
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
–32768
–16384
0
CODE
185456 G01
16384
32767
185456fa
1
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