LTC2461/LTC2463 2 Ultra-Tiny, 16-Bit I C ADCs with 10ppm/C Max Precision Reference FEATURES DESCRIPTION n 16-Bit Resolution, No Missing Codes The LTC 2461/LTC2463 are ultra tiny, 16-Bit analog-to- n Internal Reference, High Accuracy 10ppm/C (Max) digital converters with an integrated precision reference. n Single-Ended (LTC2461) or Differential (LTC2463) They use a single 2.7V to 5.5V supply and communicate 2 n 2LSB Offset Error (Typ) through an I C Interface. The LTC2461 is single-ended n 0.01% Gain Error (Typ) with a 0V to 1.25V input range and the LTC2463 is dif- n 60 Conversions Per Second ferential with a 1.25V input range. Both ADCs include a n Single Conversion Settling Time for Multiplexed 1.25V integrated reference with 2ppm/C drift perfor- Applications mance and 0.1% initial accuracy. The converters are n 1.5mA Supply Current available in a 12-pin 3mm 3mm DFN package or an n 200nA Sleep Current MSOP-12 package. They include an integrated oscillator n Internal OscillatorNo External Components and perform conversions with no latency for multiplexed Required applications. The LTC2461/LTC2463 include a proprietary 2 n 2-Wire I C Interface with Two Addresses Plus One input sampling scheme that reduces the average input Global Address for Synchronization current several orders of magnitude when compared to n Ultra-Tiny, 12-Lead, 3mm 3mm DFN and MSOP conventional delta sigma converters. Packages Following a single conversion, the LTC2461/LTC2463 automatically power down the converter and can also be APPLICATIONS configured to power down the reference. When both the ADC and reference are powered down, the supply current n System Monitoring is reduced to 200nA. n Environmental Monitoring n Direct Temperature Measurements The LTC2461/LTC2463 can sample at 60 conversions per n Instrumentation second and, due to the very large oversampling ratio, n Data Acquisition have extremely relaxed antialiasing requirements. Both n Embedded ADC Upgrades include continuous internal offset and fullscale calibration L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear algorithms which are transparent to the user, ensuring ac- Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6208279, 6411242, 7088280, 7164378. curacy over time and the operating temperature range. TYPICAL APPLICATION V vs Temperature REF 1.2520 2.7V TO 5.5V 1.2515 0.1F 0.1F 0.1F 10F 1.2510 0.1F 1.2505 REFOUT COMP V CC + IN 1.2500 SCL 2 10k 10k I C LTC2463 INTERFACE 1.2495 SDA IN 0.1F 1.2490 10k REF A0 GND R 1.2485 24613 TA01a 1.2480 50 30 10 10 30 50 70 90 TEMPERATURE (C) 24613 TA01b 24613fa 1 REFERENCE OUTPUT VOLTAGE (V)LTC2461/LTC2463 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) ................................... 0.3V to 6V Storage Temperature Range .................. 65C to 150C CC Analog Input Voltage Operating Temperature Range + (V , V , V , V , LTC2461C/LTC2463C ............................... 0C to 70C IN IN IN REF V , V ) ...........................0.3V to (V + 0.3V) LTC2461I/LTC2463I .............................40C to 85C COMP REFOUT CC Digital Voltage (V , V , V ) ..........................0.3V to (V + 0.3V) SDA SCL A0 CC PIN CONFIGURATION LTC2463 LTC2463 TOP VIEW TOP VIEW 1 V REFOUT 12 CC REFOUT 1 12 V GND CC COMP 2 11 COMP 2 11 GND 3 A0 10 IN A0 3 10 IN 13 + 4 + GND 9 IN GND 4 9 IN SCL 5 8 REF SCL 5 8 REF SDA 6 7 GND SDA 6 7 GND DD PACKAGE MS PACKAGE 12-LEAD (3mm 3mm) PLASTIC DFN 12-LEAD PLASTIC MSOP T = 125C, = 135C/W T = 125C, = 43C/W JMAX JA JMAX JA EXPOSED PAD (PIN 13) LTC2461 LTC2461 TOP VIEW TOP VIEW REFOUT 1 12 V CC REFOUT 1 12 V 2 11 GND CC COMP COMP 2 11 GND 3 GND A0 10 13 A0 3 10 GND 4 IN GND 9 GND 4 9 IN 5 REF 5 SCL 8 SCL 8 REF 6 SDA 7 GND 6 7 SDA GND DD PACKAGE MS PACKAGE 12-LEAD (3mm 3mm) PLASTIC DFN 12-LEAD PLASTIC MSOP T = 125C, = 43C/W T = 125C, = 135C/W JMAX JA JMAX JA EXPOSED PAD (PIN 13) ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2461CDD PBF LTC2461CDD TRPBF LFGF 12-Lead Plastic (3mm 3mm) DFN 0C to 70C LTC2461IDD PBF LTC2461IDD TRPBF LFGF 12-Lead Plastic (3mm 3mm) DFN 40C to 85C LTC2461CMS PBF LTC2461CMS TRPBF 2461 12-Lead Plastic MSOP 0C to 70C LTC2461IMS PBF LTC2461IMS TRPBF 2461 12-Lead Plastic MSOP 40C to 85C LTC2463CDD PBF LTC2463CDD TRPBF LFGG 12-Lead Plastic (3mm 3mm) DFN 0C to 70C LTC2463IDD PBF LTC2463IDD TRPBF LFGG 12-Lead Plastic (3mm 3mm) DFN 40C to 85C LTC2463CMS PBF LTC2463CMS TRPBF 2463 12-Lead Plastic MSOP 0C to 70C LTC2463IMS PBF LTC2463IMS TRPBF 2463 12-Lead Plastic MSOP 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: