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MILPITAS, CA June 9, 2015 Linear Technology Corporation introduces the LTC234818, an 18bit, 8channel simultaneous sampling successive approximation register (SAR) ADC with industryleading performance and
flexibility. While converting eight channels at 200ksps per channel throughput, each SoftSpan™ input can be
independently configured on a conversionbyconversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to
5.12V signals. The differential analog inputs operate over a wide 34V input common mode range, allowing the ADC to directly digitize a variety of signals to simplify the signalchain design. The input signal flexibility, combined with unrivaled ±3LSB maximum INL, no missing codes at 18 bits, and 96.7dB SNR, makes the LTC234818 ideal for high performance industrial process control, test and measurement, power line monitoring, instrumentation and automatic test equipment applications.
The LTC234818 features a precision internal reference with 20ppm/°C maximum temperature coefficient and an integrated reference buffer capable of accurate oneshot measurements, providing space savings in densely packed circuit boards. Optionally, an external 5V reference can be used to expand the analog input range to ±12.5V. The device dissipates 140mW when converting eight channels simultaneously at 200ksps per channel, and features nap and powerdown modes to reduce power dissipation at slower throughputs.
In addition to its unique analog characteristics, the LTC234818 offers unmatched digital flexibility, featuring pin selectable SPI CMOS and LVDS serial interfaces. The wide digital output supply range allows the device to communicate with any CMOS logic between 1.8V and 5V. In CMOS mode, applications can employ between one
and eight lanes of serial output data, enabling the user to optimize bus width and data throughput. LVDS mode offers low noise, high speed communications over greater distances using differential signaling. Together, these I/O interface options allow the LTC234818 to communicate equally well with legacy microcontrollers and modern FPGAs.
The LTC234818 is the first in a family of multichannel 18/16bit simultaneous sampling SAR ADCs. All specifications are guaranteed over the extended 40°C to 125°C temperature range. The LTC234818 is available now in a 48lead, 7mm x 7mm LQFP package, priced starting at $23.35 each in 1,000piece quantities. Samples and demo boards may be requested at www.linear.com/product/LTC234818, or by contacting your local Linear Technology sales office.
200ksps per Channel Throughput
Eight Simultaneous Sampling Channels
±3LSB INL Maximum
Guaranteed 18Bit, No Missing Codes Differential, Wide Common Mode Range Inputs
PerChannel SoftSpan Input Ranges:
±10.24V, 0V to 10.24V, ±5.12V, 0V to
5.12V
96.7dB SingleConversion SNR (Typical) Integrated Reference and Buffer
(4.096V)
2.5V to 5V External Reference Input
Range
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
140mW Power Dissipation (Typical)
48Lead (7mm x 7mm) LQFP Package
18Bit, Simultaneous Sampling Octal ADC with SoftSpan Inputs Click Photo for HighRes ImageThe USA list pricing shown is for budgetary use only. International prices may differ due to local duties, taxes, fees and exchange rates.
About Linear Technology
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company's products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and
interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit
www.linear.com.
, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks and SoftSpan is a trademark of Linear Technology Corp. All other trademarks are the property of their respective owners.
John Hamburger
Tel: (408) 4321900 ext. 2419 jhamburger@linear.com
Doug Dickinson
Tel: (408) 432 1900 ext. 2233 ddickinson@linear.com
Fanny Lau
Tel: 85224280303 flau@linear.com
Angela Ao
Tel: (8610)6522 8081 angela.ao@ebacomms.com
Yoshikazu Funasaki Tel: 81352267291 yfunasaki@linear.com
Takashi Matsuda
Tel: +81332558411 linear@chugaiad.co.jp
Desiree Park
Tel: +8225656625 desiree@ezwire.com
Alice Wang
Tel: +886228974705 alice@ezwire.com
Ralf Stegmann
Tel: +49 (0) 7131923411 ralf@ezwire.com
Alan Timmins
Tel: +441252629937 alan@ezwire.com
Simona Labianca
Tel: +39 340 0571697 simona@ezwire.com
Clotilde Zeller
Tel: +33 1 4614 87 09 clotilde@ezwire.com
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