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LTC2657BCFE-H16PBF Datasheet(PDF) 7 Page - Linear Technology |
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LTC2657BCFE-H16PBF Datasheet(HTML) 7 Page - Linear Technology |
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7 / 24 page  LTC2657 7 2657f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT DAC Output Span Internal Reference External Reference = VEXTREF 0 to 4.096 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 DC Crosstalk 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 4) 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 Reference Reference Output Voltage 2.044 2.048 2.052 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 35 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) l 40 pF Power Supply VCC Positive Supply Voltage For Specified Performance l 4.5 5.5 V ICC Supply Current (Note 8) VCC = 5V, Internal Reference On VCC = 5V, Internal Reference Off l l 3.3 3 4.25 3.7 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 0.8V V VIH(LDAC) High Level Input Voltage (LDAC) VCC = 4.5V to 5.5V l 2.4 V 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 CAn (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 CAn = GND See Test Circuit 2 l 10 kΩ RINF Resistance from CAn (n = 0,1, 2) to VCC or GND to Set CAn = FLOAT See Test Circuit 2 l 2MΩ VOL Low Level Ouput Voltage Sink Current = 3mA l 0 0.4 V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V, VOUT unloaded unless otherwise specified. LTC2657B-H16/LTC2657-H12 (Internal Reference = 2.048V) |
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