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LTC2655BCUF-L16PBF Datasheet(PDF) 6 Page - Linear Technology |
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LTC2655BCUF-L16PBF Datasheet(HTML) 6 Page - Linear Technology |
6 / 28 page LTC2655 6 2655f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 2.7V to 5.5V, VOUT unloaded unless otherwise specified. LTC2655B-L16/LTC2655-L12 (Internal Reference = 1.25V) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Reference Output Voltage 1.248 1.25 1.252 V Reference Temperature Coefficient (Note 7) ±2 ±10 ppm/°C Reference Line Regulation VCC ±10% –80 dB Reference Short-Circuit Current VCC = 5.5V, Forcing REFIN/OUT to GND l 35 mA REFCOMP Pin Short-Circuit Current VCC = 5.5V, Forcing REFCOMP to GND l 65 200 μA Reference Load Regulation VCC = 3V±10% or 5V±10%, IOUT = 100μA Sourcing 40 mV/mA Reference Output Voltage Noise Density CREFCOMP = CREFIN/OUT = 0.1μF, at f = 1kHz 30 nV/√Hz Reference Input Range External Reference Mode (Note 14) l 0.5 VCC/2 V Reference Input Current l 0.001 1 μA Reference Input Capacitance (Note 9) 20 pF Power Supply VCC Positive Supply Voltage For Specified Performance l 2.7 5.5 V ICC Supply Current (Note 8) VCC = 5V, Internal Reference On VCC = 5V, Internal Reference Off VCC = 3V, Internal Reference On VCC = 3V, Internal Reference Off l l l l 1.7 1.3 1.6 1.2 2.5 2 2.2 1.7 mA mA mA mA ISD Supply Current in Shutdown Mode (Note 8) VCC = 5V l 3μA Digital I/O VIL Low Level Input Voltage (SDA and SCL) l 0.3VCC V VIH High Level Input Voltage (SDA and SCL) l 0.7VCC V VIL(LDAC) Low Level Input Voltage (LDAC) VCC = 4.5V to 5.5V l 0.8 V VCC = 2.7V to 4.5V l 0.6 V VIH(LDAC) High Level Input Voltage (LDAC) VCC = 3.6V to 5.5V l 2.4 V VCC = 2.7V to 3.6V l 2V VIL(CA) Low Level Input Voltage (CA0 to CA2) See Test Circuit 1 l 0.15VCC V VIH(CA) High Level Input Voltage (CA0 to CA2) See Test Circuit 1 l 0.85VCC V RINH Resistance from CA n (n = 0,1,2) to VCC to Set CAn = VCC See Test Circuit 2 l 10 kΩ RINL Resistance from CAn ( n = 0,1,2) to GND to Set CA n = GND See Test Circuit 2 l 10 kΩ RINF Resistance from CA n (n = 0,1,2) to VCC or GND to Set Can = FLOAT See Test Circuit 2 l 2MΩ VOL Low Level Output Voltage Sink Current =3mA l 0 0.4 V tOF Output Fall Time VO = VIH(MIN) to VO = VIL(MAX), CB = 10pF to 400pF (Note 13) 20+0.1CB 250 ns tSP Pulse Width of Spikes Suppressed by Input Filter l 050 ns IIN Input Leakage 0.1VCC ≤ VIN ≤ 0.9VCC l 1μA CIN I/O Pin Capacitance (Note 9) l 10 pF CB Capacitance Load for Each Bus Line l 400 pF CCAn External Capacitive Load on Address Pins CA0, CA1 and CA2 l 10 pF |
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