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Linear Technology Electronic Components Datasheet

LTC2337IMS-18 Datasheet

Fully Differential Input ADC

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LTC2337-18
FEATURES
18-Bit, 500ksps, ±10.24V
True Bipolar, Fully Differential
Input ADC with 100dB SNR
DESCRIPTION
nn 500ksps Throughput Rate
nn ±4LSB INL (Max)
nn Guaranteed 18-Bit No Missing Codes
nn Fully Differential Inputs
nn True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
nn 100dB SNR (Typ) at fIN = 2kHz
nn –115dB THD (Typ) at fIN = 2kHz
nn Guaranteed Operation to 125°C
nn Single 5V Supply
nn Low Drift (20ppm/°C Max) 2.048V Internal Reference
nn Onboard Single-Shot Capable Reference Buffer
nn No Pipeline Delay, No Cycle Latency
nn 1.8V to 5V I/O Voltages
nn SPI-Compatible Serial I/O with Daisy-Chain Mode
nn Internal Conversion Clock
nn Power Dissipation 35mW (Typ)
nn 16-Lead MSOP Package
APPLICATIONS
nn Programmable Logic Controllers
nn Industrial Process Control
nn High Speed Data Acquisition
nn Portable or Compact Instrumentation
nn ATE
The LTC®2337-18 is a low noise, high speed 18-bit succes-
sive approximation register (SAR) ADC with fully differential
inputs. Operating from a single 5V supply, the LTC2337-18
has a ±10.24V true bipolar input range, making it ideal for
high voltage applications which require a wide dynamic
range. The LTC2337-18 achieves ±4LSB INL maximum,
no missing codes at 18-bits with 100dB SNR.
The LTC2337-18 has an onboard single-shot capable
reference buffer and low drift (20ppm/°C max) 2.048V
temperature compensated reference. The LTC2337-18
also has a high speed SPI-compatible serial interface that
supports 1.8V, 2.5V, 3.3V and 5V logic while also featuring
a daisy-chain mode. The fast 500ksps throughput with
no cycle latency makes the LTC2337-18 ideally suited
for a wide variety of high speed applications. An internal
oscillator sets the conversion time, easing external timing
considerations. The LTC2337-18 dissipates only 35mW
and automatically naps between conversions, leading to
reduced power dissipation that scales with the sampling
rate. A sleep mode is also provided to reduce the power
consumption of the LTC2337-18 to 300μW for further
power savings during inactive periods.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents, including 7705765 and 7961132
TYPICAL APPLICATION
+10.24V
+
–10.24V
+10.24V
–10.24V
5V
10µF
1.8V TO 5V
2.2µF
0.1µF
VDD
IN+
VDDLBYP OVDD
LTC2337-18
IN
RERFEBFUF
REFIN GND
47µF
100nF
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
233718 TA01
SAMPLE CLOCK
For more information www.linear.com/LTC2337-18
32k Point FFT fS = 500ksps,
fIN = 2kHz
0
SNR = 100.4dB
–20
THD = –116dB
SINAD = 100.3dB
–40
SFDR = –118dB
–60
–80
–100
–120
–140
–160
–180
0
50
100 150 200 250
FREQUENCY (kHz)
233718 TA01b
233718fa
1


Linear Technology Electronic Components Datasheet

LTC2337IMS-18 Datasheet

Fully Differential Input ADC

No Preview Available !

LTC2337-18
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VDD)...................................................6V
Supply Voltage (OVDD).................................................6V
Supply Bypass Voltage (VDDLBYP)............................3.2V
Analog Input Voltage
IN+, IN...............................................–16.5V to 16.5V
REFBUF....................................................................6V
REFIN ...................................................................2.8V
Digital Input Voltage
(Note 3)............................ (GND –0.3V) to (OVDD + 0.3V)
Digital Output Voltage
(Note 3)............................ (GND –0.3V) to (OVDD + 0.3V)
Power Dissipation............................................... 500mW
Operating Temperature Range
LTC2337C................................................. 0°C to 70°C
LTC2337I..............................................–40°C to 85°C
LTC2337H........................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
VDDLBYP 1
VDD 2
GND 3
IN+ 4
IN5
GND 6
REFBUF 7
REFIN 8
16 GND
15 OVDD
14 SDO
13 SCK
12 RDL/SDI
11 BUSY
10 CHAIN
9 CNV
MS PACKAGE
16-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 110°C/W
ORDER INFORMATION http://www.linear.com/product/LTC2337-18#orderinfo
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2337CMS-18#PBF LTC2337CMS-18#TRPBF 233718
16-Lead Plastic MSOP
0°C to 70°C
LTC2337IMS-18#PBF
LTC2337IMS-18#TRPBF 233718
16-Lead Plastic MSOP
–40°C to 85°C
LTC2337HMS-18#PBF LTC2337HMS-18#TRPBF 233718
16-Lead Plastic MSOP
–40°C to 125°C
Consult LTC 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/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
233718fa
2
For more information www.linear.com/LTC2337-18


Part Number LTC2337IMS-18
Description Fully Differential Input ADC
Maker Linear
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LTC2337IMS-18 Datasheet PDF






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