Datasheet LTC2385-18 (Analog Devices) - 2

LTC2385-18
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2)
Supply Voltage (V TOP VIEW DD) ..6V Supply Voltage (VDDL, OVDD) ...2.8V + – Analog Input Voltage (Note 3) V CM V DDL V DDL GND CNV CNV GND TWOLANES IN+, IN– ...(GND – 0.3V) to (VDD + 0.3V) 32 31 30 29 28 27 26 25 REFBUF ...(GND – 0.3V) to (V GND 1 24 CLK+ DD + 0.3V) REFIN (Note 4) ...(GND – 0.3V) to 2.8V IN+ 2 23 CLK– Digital Input Voltage (Note 3) IN– 3 22 OVDD GND 4 21 GND PD, TESTPAT ... (GND – 0.3V) to (OV 33 DD + 0.3V) REFGND 5 GND 20 DCO+ CLK+, CLK– .. (GND – 0.3V) to (OVDD + 0.3V) REFGND 6 19 DCO– TWOLANES, CNV+, REFBUF 7 18 DA+ CNV– ...(GND – 0.3V) to (VDDL + 0.3V) REFBUF 8 17 DA– Power Dissipation .. 500mW 9 10 11 12 13 14 15 16 Operating Temperature Range AT – + DB DB LTC2385C .. 0°C to 70°C REFIN GND V DD V DD PD TESTP LTC2385I ...–40°C to 85°C UH PACKAGE Storage Temperature Range .. –65°C to 150°C 32-LEAD (5mm × 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 34°C/W EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2385CUH-18#PBF LTC2385CUH-18#TRPBF 238518 32-Lead (5mm × 5mm) Plastic QFN 0°C to 70°C LTC2385IUH-18#PBF LTC2385IUH-18#TRPBF 238518 32-Lead (5mm × 5mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V + IN Absolute Input Range (IN+) (Note 6) l –0.1 VREFBUF + 0.1 V V – IN Absolute Input Range (IN–) (Note 6) l –0.1 VREFBUF + 0.1 V V + – + – IN – VIN Input Differential Voltage Range VIN – VIN l –VREFBUF VREFBUF V V + – INCM Common Mode Input Range (VIN + VIN )/2 l VREFBUF/2 – 0.1 VREFBUF/2 VREFBUF/2 + 0.1 V IIN Analog Input DC Leakage Current l –1 1 μA CIN Analog Input Capacitance Sample Mode 20 pF Hold Mode 2 pF CMRR Input Common Mode Rejection Ratio fIN = 1MHz 75 dB 238518f 2 For more information www.linear.com/LTC2385-18 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Reference Buffer Characteristics Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Package Description Typical Application Related Parts