LTC2358-16 Buffered Octal, 16-Bit, 200ksps/Ch Differential 10.24V ADC with 30V Common Mode Range P-P FEATURES DESCRIPTION n 200ksps per Channel Throughput The LTC 2358-16 is a 16-bit, low noise 8-channel simulta- n Eight Buffered Simultaneous Sampling Channels neous sampling successive approximation register (SAR) n 500pA/12nA Max Input Leakage at 85C/125C ADC with buffered differential, wide common mode range n 1LSB INL (Maximum, 10.24V Range) picoamp inputs. Operating from a 5V low voltage supply, n Guaranteed 16-Bit, No Missing Codes flexible high voltage supplies, and using the internal refer- TM n Differential, Wide Common Mode Range Inputs ence and buffer, each channel of this SoftSpan ADC can be n Per-Channel SoftSpan Input Ranges: independently configured on a conversion-by-conversion 10.24V, 0V to 10.24V, 5.12V, 0V to 5.12V basis to accept 10.24V, 0V to 10.24V, 5.12V, or 0V to 12.5V, 0V to 12.5V, 6.25V, 0V to 6.25V 5.12V signals. Individual channels may also be disabled n 94.2dB Single-Conversion SNR (Typical) to increase throughput on the remaining channels. n 111dB THD (Typical) at f = 2kHz IN The integrated picoamp-input analog buffers, wide input n 128dB CMRR (Typical) at f = 200Hz IN common mode range and 128dB CMRR of the LTC2358-16 n Rail-to-Rail Input Overdrive Tolerance allow the ADC to directly digitize a variety of signals us- n Integrated Reference and Buffer (4.096V) ing minimal board space and power. This input signal n SPI CMOS (1.8V to 5V) and LVDS Serial I/O flexibility, combined with 1LSB INL, no missing codes n Internal Conversion Clock, No Cycle Latency at 16 bits, and 94.2dB SNR, makes the LTC2358-16 an n 219mW Power Dissipation (27mW/Ch Typical) ideal choice for many high voltage applications requiring n 48-Lead (7mm x 7mm) LQFP Package wide dynamic range. The LTC2358-16 supports pin-selectable SPI CMOS (1.8V APPLICATIONS to 5V) and LVDS serial interfaces. Between one and eight lanes of data output may be employed in CMOS mode, n Programmable Logic Controllers allowing the user to optimize bus width and throughput. n Industrial Process Control All registered trademarks and trademarks are the property of their respective owners. Protected n Power Line Monitoring by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. n Test and Measurement TYPICAL APPLICATION 15V 5V 1.8V TO 5V Integral Nonlinearity vs 0.1F 0.1F 2.2F 0.1F Output Code and Channel CMOS OR LVDS I/O INTERFACE 1.00 10.24V RANGE BUFFERS V V V OV FULLY CC DD DDLBYP DD LVDS/CMOS TRUE BIPOLAR DRIVE (IN = 0V) 0.75 + ARBITRARY DIFFERENTIAL PD IN0 ALL CHANNELS S/H +10V +5V IN0 0.50 LTC2358-16 S/H 0V 0V 0.25 SDO0 S/H 10V 5V S/H 0 16-BIT MUX SDO7 SAR ADC UNIPOLAR TRUE BIPOLAR S/H SCKO 0.25 +10V +10V SCKI S/H SDI 0.50 0V 0V CS S/H BUSY 0.75 SAMPLE 10V 10V + IN7 CNV S/H CLOCK IN7 1.00 + V REFBUF REFIN GND DIFFERENTIAL INPUTS IN /IN WITH EE 32768 16384 0 16384 32768 WIDE INPUT COMMON MODE RANGE 235816 TA01a OUTPUT CODE 47F 0.1F EIGHT BUFFERED 0.1F 235816 TA01b SIMULTANEOUS SAMPLING CHANNELS 15V Rev A 1 Document Feedback For more information www.analog.com INL ERROR (LSB)LTC2358-16 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW Supply Voltage (V ) .....................0.3V to (V + 40V) CC EE Supply Voltage (V ) ................................ 17.4V to 0.3V EE Supply Voltage Difference (V V ) ......................40V CC EE Supply Voltage (V ) ..................................................6V DD Supply Voltage (OV ) ................................................6V DD IN6 1 36 SDO7 Internal Regulated Supply Bypass (V ) ... (Note 3) + DDLBYP IN6 2 35 SDO /SDO6 + IN5 3 34 SDO /SDO5 Analog Input Voltage + IN5 4 33 SCKO /SDO4 + + + IN0 to IN7 , IN4 5 32 SCKO /SCKO + IN4 6 31 OV DD IN0 to IN7 (Note 4) .........(V 0.3V) to (V + 0.3V) EE CC IN3 7 30 GND + IN3 8 29 SCKI /SCKI REFIN .................................................... 0.3V to 2.8V + IN2 9 28 SCKI /SDO3 + IN2 10 27 SDI /SDO2 REFBUF, CNV (Note 5) ............. 0.3V to (V + 0.3V) DD + IN1 11 26 SDI /SDO1 + Digital Input Voltage (Note 5) ..... 0.3V to (OV + 0.3V) IN1 12 25 SDO0 DD Digital Output Voltage (Note 5) .. 0.3V to (OV + 0.3V) DD Power Dissipation .............................................. 500mW Operating Temperature Range LTC2358C ................................................ 0C to 70C LTC2358I .............................................40C to 85C LX PACKAGE LTC2358H .......................................... 40C to 125C 48-LEAD (7mm 7mm) PLASTIC LQFP Storage Temperature Range .................. 65C to 150C T = 150C, = 53C/W JMAX JA ORDER INFORMATION