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LTC2337-18 Dataheets PDF



Part Number LTC2337-18
Manufacturers Linear
Logo Linear
Description Fully Differential Input ADC
Datasheet LTC2337-18 DatasheetLTC2337-18 Datasheet (PDF)

FEATURES LTC2337-18 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 Bu.

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FEATURES LTC2337-18 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 successive 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 AMPLITUDE (dBFS) 0 –20 –40 –60 –80 –100 –120 –140 –160 –180 0 32k Point FFT fS = 500ksps, fIN = 2kHz SNR = 100.4dB THD = –116dB SINAD = 100.3dB SFDR = –118dB 50 100 150 200 250 FREQUENCY (kHz) 233718 TA01b 233718fa 1 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 VDDLGVBIINDNNYDDP+– 1 2 3 4 5 GND 6 REFBUF 7 REFIN 8 16 GND 15 14 SODVDOD 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 cha.


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