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LTC2657BIFE-H16PBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC2657BIFE-H16PBF Datasheet(HTML) 5 Page - Linear Technology |
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5 / 24 page  LTC2657 5 2657f 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. LTC2657B-L16/LTC2657-L12 (Internal Reference = 1.25V) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT DAC Output Span Internal Reference External Reference = VEXTREF 0 to 2.5 0 to 2 • VEXTREF V V PSR Power Supply Rejection VCC ±10% –80 dB ROUT DC Output Impedance VCC = 5V ±10%, Internal Reference, Mid-Scale, –15mA ≤ IOUT ≤ 15mA l 0.04 0.15 Ω VCC = 3V ±10%, Internal Reference, Mid-Scale, –7.5mA ≤ IOUT ≤ 7.5mA l 0.04 0.15 Ω DC Crosstalk (Note 5) Due to Full-Scale Output Change Due to Load Current Change Due to Powering Down (per Channel) ±1.5 ±2 ±1 μV μV/mA μV ISC Short-Circuit Output Current (Note 6) VCC = 5.5V, VEXTREF = 2.8V Code: Zero-Scale, Forcing Output to VCC Code: Full-Scale, Forcing Output to GND l l 20 20 65 65 mA mA VCC = 2.7V, VEXTREF = 1.4V Code: Zero-Scale, Forcing Output to VCC Code: Full-Scale, Forcing Output to GND l l 10 10 40 40 mA mA Reference Reference Output Voltage 1.248 1.25 1.252 V Reference Temperature Coefficient (Note 7) C-Grade Only ±2 ±10 ppm/°C Reference Line Regulation VCC ±10% –80 dB Reference Short-Circuit Current VCC = 5.5V, Forcing REFIN/OUT to GND l 5mA REFCOMP Pin Short-Circuit Current VCC = 5.5V, Forcing REFCOMP to GND l 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) 40 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 3.1 2.7 3 2.6 4.25 3.7 3.8 3.2 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 2 V |
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