Datasheet LTC2338-18 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 18-Bit, 1Msps, ±10.24V True Bipolar, Fully Differential Input ADC with 100dB SNR |
| Pages / Page | 26 / 1 — FEATURES. DESCRIPTION. 1Msps Throughput Rate. ±4LSB INL (Max). Guaranteed … |
| File Format / Size | PDF / 1.8 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. 1Msps Throughput Rate. ±4LSB INL (Max). Guaranteed 18-Bit No Missing Codes. Fully Differential Inputs
Model Line for this Datasheet
Text Version of Document
LTC2338-18 18-Bit, 1Msps, ±10.24V True Bipolar, Fully Differential Input ADC with 100dB SNR
FEATURES DESCRIPTION
n
1Msps Throughput Rate
The LTC®2338-18 is a low noise, high speed 18-bit succes- n
±4LSB INL (Max)
sive approximation register (SAR) ADC with fully differential n
Guaranteed 18-Bit No Missing Codes
inputs. Operating from a single 5V supply, the LTC2338-18 n
Fully Differential Inputs
has a ±10.24V true bipolar input range, making it ideal for n
True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
high voltage applications which require a wide dynamic n
100dB SNR (Typ) at fIN = 2kHz
range. The LTC2338-18 achieves ±4LSB INL maximum, n
–115dB THD (Typ) at fIN = 2kHz
no missing codes at 18-bits with 100dB SNR. n Guaranteed Operation to 125°C The LTC2338-18 has an onboard single-shot capable n Single 5V Supply reference buffer and low drift (20ppm/°C max) 2.048V n Low Drift (20ppm/°C Max) 2.048V Internal Reference temperature compensated reference. The LTC2338-18 n Onboard Single-Shot Capable Reference Buffer also has a high speed SPI-compatible serial interface that n No Pipeline Delay, No Cycle Latency supports 1.8V, 2.5V, 3.3V and 5V logic while also featur- n 1.8V to 5V I/O Voltages ing a daisy-chain mode. The fast 1Msps throughput with n SPI-Compatible Serial I/O with Daisy-Chain Mode no cycle latency makes the LTC2338-18 ideally suited n Internal Conversion Clock for a wide variety of high speed applications. An internal n Power Dissipation 50mW (Typ) oscillator sets the conversion time, easing external timing n 16-Lead MSOP Package considerations. The LTC2338-18 dissipates only 50mW and automatically naps between conversions, leading to
APPLICATIONS
reduced power dissipation that scales with the sampling n rate. A sleep mode is also provided to reduce the power Programmable Logic Controllers n consumption of the LTC2338-18 to 300μW for further Industrial Process Control n power savings during inactive periods. High Speed Data Acquisition L n , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Portable or Compact Instrumentation SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the n ATE property of their respective owners. Protected by U.S. Patents, including 7705765, 7961132.
TYPICAL APPLICATION 32k Point FFT fS = 1Msps, fIN = 2kHz
5V 1.8V TO 5V 0 SNR = 100.3dB 10µF 2.2µF 0.1µF –20 THD = –117dB SINAD = 100.2dB –40 SFDR = –119dB +10.24V VDD VDDLBYP OVDD CHAIN –60 + IN+ RDL/SDI –10.24V SDO –80 +10.24V LTC2338-18 SCK – –100 IN– BUSY –10.24V CNV SAMPLE CLOCK REF REFBUF REFIN GND AMPLITUDE (dBFS) –120 233818 TA01 47µF 100nF –140 –160 –180 0 100 200 300 400 500 FREQUENCY (kHz) 233818 TA01 233818fa For more information www.linear.com/LTC2338-18 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
1Msps Throughput Rate
The LTC®2338-18 is a low noise, high speed 18-bit succes- n
±4LSB INL (Max)
sive approximation register (SAR) ADC with fully differential n
Guaranteed 18-Bit No Missing Codes
inputs. Operating from a single 5V supply, the LTC2338-18 n
Fully Differential Inputs
has a ±10.24V true bipolar input range, making it ideal for n
True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
high voltage applications which require a wide dynamic n
100dB SNR (Typ) at fIN = 2kHz
range. The LTC2338-18 achieves ±4LSB INL maximum, n
–115dB THD (Typ) at fIN = 2kHz
no missing codes at 18-bits with 100dB SNR. n Guaranteed Operation to 125°C The LTC2338-18 has an onboard single-shot capable n Single 5V Supply reference buffer and low drift (20ppm/°C max) 2.048V n Low Drift (20ppm/°C Max) 2.048V Internal Reference temperature compensated reference. The LTC2338-18 n Onboard Single-Shot Capable Reference Buffer also has a high speed SPI-compatible serial interface that n No Pipeline Delay, No Cycle Latency supports 1.8V, 2.5V, 3.3V and 5V logic while also featur- n 1.8V to 5V I/O Voltages ing a daisy-chain mode. The fast 1Msps throughput with n SPI-Compatible Serial I/O with Daisy-Chain Mode no cycle latency makes the LTC2338-18 ideally suited n Internal Conversion Clock for a wide variety of high speed applications. An internal n Power Dissipation 50mW (Typ) oscillator sets the conversion time, easing external timing n 16-Lead MSOP Package considerations. The LTC2338-18 dissipates only 50mW and automatically naps between conversions, leading to
APPLICATIONS
reduced power dissipation that scales with the sampling n rate. A sleep mode is also provided to reduce the power Programmable Logic Controllers n consumption of the LTC2338-18 to 300μW for further Industrial Process Control n power savings during inactive periods. High Speed Data Acquisition L n , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Portable or Compact Instrumentation SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the n ATE property of their respective owners. Protected by U.S. Patents, including 7705765, 7961132.
TYPICAL APPLICATION 32k Point FFT fS = 1Msps, fIN = 2kHz
5V 1.8V TO 5V 0 SNR = 100.3dB 10µF 2.2µF 0.1µF –20 THD = –117dB SINAD = 100.2dB –40 SFDR = –119dB +10.24V VDD VDDLBYP OVDD CHAIN –60 + IN+ RDL/SDI –10.24V SDO –80 +10.24V LTC2338-18 SCK – –100 IN– BUSY –10.24V CNV SAMPLE CLOCK REF REFBUF REFIN GND AMPLITUDE (dBFS) –120 233818 TA01 47µF 100nF –140 –160 –180 0 100 200 300 400 500 FREQUENCY (kHz) 233818 TA01 233818fa For more information www.linear.com/LTC2338-18 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
