Datasheet LTC2946 (Analog Devices) - 4

LTC2946
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VDD is from 4V to 100V, unless otherwise noted. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I – SENSE(LO) 0V SENSE– Source Current SENSE+, SENSE– = 0V, VDD = 48V l –5 µA Shutdown l –1 µA
ADC (SENSE+, SENSE– = 0V, 100V) (Note 5)
RES Resolution (No missing codes) (Note 7) l 12 Bits TUE Total Unadjusted Error (Note 6) ΔSENSE (C-, I-Grade) l ±0.6 % ΔSENSE (H-, MP-Grade) l ±0.7 % SENSE+, VDD (C-, I-Grade) l ±0.4 % SENSE+, VDD (H-, MP-Grade) l ±0.5 % ADIN (C-, I-Grade) l ±0.3 % ADIN (H-, MP-Grade) l ±0.4 % VFS Full-Scale Voltage ΔSENSE (C-, I-Grade) l 101.8 102.4 103 mV ΔSENSE (H-, MP-Grade) l 101.7 102.4 103.1 mV SENSE+, VDD (C-, I-Grade) l 102 102.4 102.8 V SENSE+, VDD (H-, MP-Grade) l 101.9 102.4 102.9 V ADIN (C-, I-Grade) l 2.042 2.048 2.054 V ADIN (H-, MP-Grade) l 2.04 2.048 2.056 V LSB LSB Step Size ΔSENSE 25 µV SENSE+, VDD 25 mV ADIN 0.5 mV VOS Offset Error ΔSENSE (C-, I-Grade) l ±2.1 LSB ΔSENSE (H-, MP-Grade) l ±3.1 LSB SENSE+, VDD l ±1.5 LSB ADIN l ±1.1 LSB INL Integral Nonlinearity ΔSENSE l ±2.5 LSB SENSE+, VDD l ±2 LSB ADIN l ±2 LSB στ Transition Noise (Note 7) ΔSENSE 1.2 µVRMS SENSE+, VDD 0.3 mVRMS ADIN 10 µVRMS tCONV Conversion Time (Snapshot Mode) ΔSENSE l 62.4 65.6 68.8 ms SENSE+, VDD, ADIN l 31.2 32.8 34.4 ms RADIN ADIN Input Resistance VDD = 48V, ADIN = 3V l 3 10 MΩ
CLKIN, CLKOUT, GPIO
VCLKIN(TH) CLKIN Input Threshold l 0.7 1 1.3 V fCLKIN(MAX) Maximum CLKIN Frequency l 25 MHz ICLKIN(IN) CLKIN Input Current VCLKIN = 5V l 5 10 μA ICLKOUT CLKOUT Output Current VCLKIN = 0V, VCLKOUT = 0V l –70 –100 –130 μA VGPIO(TH) GPIO Input Threshold VGPIO Rising l 1.06 1.22 1.32 V VGPIO(HYST) GPIO Input Hysteresis 36 mV VGPIO(OL) GPIO Output Low Voltage IGPIO = 8mA l 0.15 0.4 V IGPIO(IN) GPIO Input Leakage Current VGPIO = 5V l 0 ±1 μA
I2C Interface (VDD = 48V)
VADR(H) ADR0, ADR1 Input High Threshold l 1.9 2.4 2.7 V VADR(L) ADR0, ADR1 Input Low Threshold l 0.3 0.6 0.9 V IADR(IN) ADR0, ADR1 Input Current ADR0, ADR1 = 0V, 3V l ±13 μA IADR(IN,Z) Allowable Leakage When Open l ±7 μA VOD(OL) SDAO, SDAO, Output Low Voltage ISDAO, ISDAO = 8mA l 0.15 0.4 V ISDA,SCL(IN) SDAI, SDAO, SDAO, SCL Input Current SDAI, SDAO, SDAO, SCL = 5V l 0 ±1 μA 2946fa 4 For more information www.linear.com/LTC2946 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts