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LTC2353ILX-16 Datasheet

Buffered Dual 16-Bit ADC

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LTC2353-16
FEATURES
Buffered Dual, 16-Bit, 550ksps/Ch
Differential ±10.24V ADC with
30VP-P Common Mode Range
DESCRIPTION
nn Simultaneous Sampling of 2 Buffered Channels
nn 550ksps per Channel Throughput
nn 500pA/12nA Max Input Leakage at 85°C/125°C
nn ±1LSB INL (Maximum, ±10.24V Range)
nn Guaranteed 16-Bit, No Missing Codes
nn Differential, Wide Common Mode Range Inputs
nn Per-Channel SoftSpan Input Ranges:
±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
nn 94.2dB Single-Conversion SNR (Typical)
nn −110dB THD (Typical) at fIN = 2kHz
nn 124dB CMRR (Typical) at fIN = 200Hz
nn Rail-to-Rail Input Overdrive Tolerance
nn Integrated Reference and Buffer (4.096V)
nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O
nn Internal Conversion Clock, No Cycle Latency
nn 162mW Power Dissipation (Typical)
nn 48-Lead (7mm x 7mm) LQFP Package
APPLICATIONS
nn Programmable Logic Controllers
nn Industrial Process Control
nn Power Line Monitoring
nn Test and Measurement
The LTC®2353-16 is a 16-bit, low noise 2-channel simulta-
neous sampling successive approximation register (SAR)
ADC with buffered differential, wide common mode range
picoamp inputs. Operating from a 5V low voltage sup-
ply, flexible high voltage supplies, and using the internal
reference and buffer, both channels of this SoftSpanTM
ADC can be independently configured on a conversion-
by-conversion basis to accept ±10.24V, 0V to 10.24V,
±5.12V, or 0V to 5.12V signals. One channel may also
be disabled to increase throughput on the other channel.
The integrated picoamp-input analog buffers, wide input
common mode range and 124dB CMRR of the LTC2353-16
allow the ADC to directly digitize a variety of signals us-
ing minimal board space and power. This input signal
flexibility, combined with ±1LSB INL, no missing codes
at 16 bits, and 94.2dB SNR, makes the LTC2353-16 an
ideal choice for many high voltage applications requiring
wide dynamic range.
The LTC2353-16 supports pin-selectable SPI CMOS (1.8V
to 5V) and LVDS serial interfaces. Either one or two lanes
of data output may be employed in CMOS mode, allowing
the user to optimize bus width and throughput.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
TYPICAL APPLICATION
ARBITRARY
+10V
0V
–10V
FULLY
DIFFERENTIAL
+5V
0V
–5V
TRUE BIPOLAR
UNIPOLAR
+10V
+10V
0V
0V
–10V
–10V
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
BUFFERS
IINN00+–
S/H
IN1+
IN1–
S/H
TWO BUFFERED
SIMULTANEOUS
SAMPLING CHANNELS
15V
5V
0.1µF
0.1µF
2.2µF
1.8V TO 5V
0.1µF
CMOS OR LVDS
I/O INTERFACE
VCC
VDD VDDLBYP OVDD LVDS/CMOS
PD
LTC2353-16
MUX
16-BIT
SAR ADC
VEE REFBUF REFIN GND
0.1µF
–15V
47µF
0.1µF
SDO0
SDO1
SCKO
SCKI
SDI
CS
BUSY
CNV
235316 TA01a
SAMPLE
CLOCK
For more information www.linear.com/LTC2353-16
Integral Nonlinearity vs
Output Code and Channel
1.00
±10.24V RANGE
0.75
TRUE BIPOLAR DRIVE (IN= 0V)
BOTH CHANNELS
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
–32768
–16384
0
16384 32768
OUTPUT CODE
235316 TA01b
235316f
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC2353ILX-16 Datasheet

Buffered Dual 16-Bit ADC

No Preview Available !

LTC2353-16
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VCC)......................–0.3V to (VEE + 40V)
Supply Voltage (VEE)................................. –17.4V to 0.3V
Supply Voltage Difference (VCC – VEE).......................40V
Supply Voltage (VDD)...................................................6V
Supply Voltage (OVDD).................................................6V
Internal Regulated Supply Bypass (VDDLBYP).... (Note 3)
Analog Input Voltage
IN0+, IN1+,
IN0, IN1(Note 4)............. (VEE – 0.3V) to (VCC + 0.3V)
REFIN..................................................... –0.3V to 2.8V
REFBUF, CNV (Note 5).............. –0.3V to (VDD + 0.3V)
Digital Input Voltage (Note 5)...... –0.3V to (OVDD + 0.3V)
Digital Output Voltage (Note 5)... –0.3V to (OVDD + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2353C................................................. 0°C to 70°C
LTC2353I..............................................–40°C to 85°C
LTC2353H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
GND 1
IIGNNN11D–+
2
3
4
GND 5
GND 6
GND 7
IIGNNN00D–+
8
9
10
GND 11
GND 12
LX PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP
TJMAX = 150°C, θJA = 53°C/W
36
35
34
33
32
GSSSSDDCCNKKOODOO–+–+//SSDCKOO1
31 OVDD
30 GND
29
28
SSCCKKII–+//SSCDKOI0
27
26
SSDDII–+
25 GND
ORDER INFORMATION http://www.linear.com/product/LTC2353-16#orderinfo
TRAY
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2353CLX-16#PBF
LTC2353LX-16
48-Lead (7mm × 7mm) Plastic LQFP
0°C to 70°C
LTC2353ILX-16#PBF
LTC2353LX-16
48-Lead (7mm × 7mm) Plastic LQFP
–40°C to 85°C
LTC2353HLX-16#PBF
LTC2353LX-16
48-Lead (7mm × 7mm) Plastic LQFP
–40°C to 125°C
Consult ADI Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
235316f
2
For more information www.linear.com/LTC2353-16


Part Number LTC2353ILX-16
Description Buffered Dual 16-Bit ADC
Maker Analog Devices
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