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LTC1858 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1858 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 40 page  LTC2335-16 1 233516f For more information www.linear.com/LTC2335-16 Typical applicaTion FeaTures DescripTion 16-Bit, 1Msps 8-Channel Differential ±10.24V Input SoftSpan ADC with Wide Input Common Mode Range The LTC®2335-16 is a 16-bit, low noise 8-channel multi- plexed successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating froma5Vlowvoltagesupply,flexiblehighvoltagesupplies, andusingtheinternalreferenceandbuffer,thisSoftSpanTM ADC can be configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V, or 0V to 5.12V signals on any channel. Alternately, the ADC may be programmed to cycle through a sequence of channels and ranges without further user intervention. The wide input common mode range and 118dB CMRR of the LTC2335-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain de- sign. This input signal flexibility, combined with ±1LSB INL, no missing codes at 16 bits, and 94.4dB SNR, makes the LTC2335-16 an ideal choice for many high voltage applications requiring wide dynamic range. The LTC2335-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. 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, 7961132, 8319673. Other Patents pending. applicaTions n 1Msps Throughput n ±1LSB INL (Maximum) n Guaranteed 16-Bit, No Missing Codes n Differential, Wide Common Mode Range Inputs n 8-Channel Multiplexer with 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 n 94.4dB Single-Conversion SNR (Typical) n −109dB THD (Typical) at fIN = 2kHz n 118dB CMRR, 125dB Active Crosstalk (Typical) n Rail-to-Rail Input Overdrive Tolerance n Programmable Sequencer with No-Latency Control n Guaranteed Operation to 125°C n Integrated Reference and Buffer (4.096V) n SPI CMOS (1.8V to 5V) and LVDS Serial I/O n No Pipeline Delay, No Cycle Latency n 180mW Power Dissipation (Typical) n 48-Lead (7mm × 7mm) LQFP Package n Programmable Logic Controllers n Industrial Process Control n Power Line Monitoring n Test and Measurement Integral Nonlinearity vs Output Code and Channel 0.1µF 2.2µF 0.1µF 0.1µF 1.8V TO 5V 5V 15V –15V SAMPLE CLOCK 233516 TA01a MUX VCC VDD VDDLBYP OVDD DIFFERENTIAL INPUTS IN+/IN– WITH WIDE INPUT COMMON MODE RANGE +10V 0V –10V TRUE BIPOLAR +10V 0V –10V ARBITRARY +10V 0V –10V UNIPOLAR SDO SCKO SCKI SDI CS BUSY CNV LVDS/CMOS PD IN0+ IN0– IN7+ IN7– 16-BIT SAMPLING ADC CMOS OR LVDS I/O INTERFACE 0.1µF REFIN 47µF 0.1µF GND REFBUF VEE LTC2335-16 +5V 0V –5V FULLY DIFFERENTIAL ±10.24V RANGE TRUE BIPOLAR DRIVE (IN– = 0V) ALL CHANNELS OUTPUT CODE –32768 –16384 0 16384 32768 –1.00 –0.75 –0.50 –0.25 0 0.25 0.50 0.75 1.00 233516 TA01b |
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