LTC2410 24-Bit No Latency ADC with Differential Input and Differential Reference FEATURES DESCRIPTION n Differential Input and Differential Reference with The LTC 2410 is a 2.7V to 5.5V micropower 24-bit dif- GND to V Common Mode Range ferential analog to digital converter with an integrated CC n 2ppm INL, No Missing Codes oscillator, 2ppm INL and 0.16ppm RMS noise. It uses n 2.5ppm Full-Scale Error delta-sigma technology and provides single cycle settling n 0.1ppm Offset time for multiplexed applications. Through a single pin, n 0.16ppm Noise the LTC2410 can be configured for better than 110dB n Single Conversion Settling Time for Multiplexed input differential mode rejection at 50Hz or 60Hz 2%, or Applications it can be driven by an external oscillator for a user defined n Internal OscillatorNo External Components rejection frequency. The internal oscillator requires no Required external frequency setting components. n 110dB Min, 50Hz or 60Hz Notch Filter The converter accepts any external differential reference n 24-Bit ADC in Narrow SSOP-16 Package voltage from 0.1V to V for flexible ratiometric and re- CC (SO-8 Footprint) mote sensing measurement configurations. The full-scale n Single Supply 2.7V to 5.5V Operation differential input range is from 0.5V to 0.5V . The REF REF n Low Supply Current (200A) and Auto Shutdown reference common mode voltage, V , and the input REFCM n Fully Differential Version of LTC2400 common mode voltage, V , may be independently set INCM anywhere within the GND to V range of the LTC2410. The CC APPLICATIONS DC common mode input rejection is better than 140dB. n Direct Sensor Digitizer The LTC2410 communicates through a flexible 3-wire n Weight Scales digital interface which is compatible with SPI and MI- n Direct Temperature Measurement CROWIRE protocols. n Gas Analyzers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No Latency is a trademark of Linear Technology Corporation. All other trademarks are the n Strain-Gauge Transducers property of their respective owners. n Instrumentation n Data Acquisition n Industrial Process Control n 6-Digit DVMs TYPICAL APPLICATION 2.7V TO 5.5V V CC 1F V CC 1F = INTERNAL OSC/50Hz REJECTION 2 14 = EXTERNAL CLOCK SOURCE V F CC O = INTERNAL OSC/60Hz REJECTION 2 3 LTC2410 + REF V 12 SDO CC 3 + BRIDGE REFERENCE 13 REF 5 + SCK IMPEDANCE IN VOLTAGE 13 SCK 3-WIRE 4 LTC2410 6 REF 100 TO 10k SPI INTERFACE 0.1V TO V CC IN 3-WIRE 11 CS 5 12 SPI INTERFACE + 4 ANALOG INPUT RANGE REF IN SDO GND F O 0.5V TO 0.5V REF REF 6 11 IN 1, 7, 8 14 CS 1, 7, 8, 9, 10, 15, 16 9, 10, GND 2410 TA01 15, 16 2410 TA02 2410fa 1 For more information www.linear.com/LTC2410LTC2410 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW Supply Voltage (V ) to GND ....................... 0.3V to 7V CC 1 16 GND GND Analog Input Pins Voltage 2 15 GND V CC to GND ......................................0.3V to (V + 0.3V) CC + 3 14 F REF O Reference Input Pins Voltage 4 13 SCK REF to GND ......................................0.3V to (V + 0.3V) CC + 5 12 SDO IN Digital Input Voltage to GND .........0.3V to (V + 0.3V) CC 6 11 CS IN Digital Output Voltage to GND .......0.3V to (V + 0.3V) 7 10 CC GND GND Operating Temperature Range 8 9 GND GND LTC2410C ............................................... 0C to 70C GN PACKAGE 16-LEAD PLASTIC SSOP LTC2410I .............................................40C to 85C T = 125C, = 110C/W JMAX JA Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2410CGN PBF LTC2410CGN TRPBF 2410 16-Lead Plastic SSOP 0C to 70C LTC2410IGN PBF LTC2410IGN TRPBF 2410I 16-Lead Plastic SSOP 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: