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ADD8708 Datasheet(PDF) 3 Page - Analog Devices |
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ADD8708 Datasheet(HTML) 3 Page - Analog Devices |
3 / 16 page ADD8708 Rev. 0 | Page 3 of 16 ELECTRICAL CHARACTERISTICS VDD = 16 V, TA @ 25°C, unless otherwise noted. Table 1. Parameter Symbol Conditions Min Typ Max Unit GAMMA CURVE CHARACTERISTICS Accuracy RACC1 0.1 0.4 % Programming Resolution RRES 500 segments 0.2 % Total Resistor String RTOTAL 15 kΩ BUFFER CHARACTERISTICS OUTPUTS Output Voltage Range (Ch18 to Ch10) VOUT IL = 100 µA 1.4 VDD V Output Voltage Range (Ch9 to Ch1) VOUT IL = 100 µA 0 VDD − 1.4 V Output vs. Load (Ch18, Ch17, Ch2, Ch1) ∆VOUT2 IL = 20 mA 15 mV Output vs. Load (Ch16 to Ch3) ∆VOUT2 IL = 5 mA 5 mV INPUTS Offset Voltage VOS 5 15 mV Offset Voltage Drift ∆VOS/∆T −40°C ≤ TA ≤ +105°C 20 µV/°C Input Bias Current IB −40°C ≤ TA ≤ +105°C 0.5 1.5 µA Input Voltage Range (Ch18 to Ch10) VIN 1.4 VDD V Input Voltage Range (Ch9 to Ch1) VIN 0 VDD − 1.4 V DYNAMIC PERFORMANCE Slew Rate SR RL = 10 kΩ, CL = 200 pF 4 6 V/µs Bandwidth BW –3 dB, RL = 10 kΩ, CL = 200 pF 4.5 MHz Settling Time to 0.1% tS 1 V, RL = 10 kΩ, CL = 200 pF 1.1 µs Phase Margin Фo RL = 10 kΩ, CL = 200 pF 55 Degrees Power Supply Rejection Ratio PSRR VDD = 7 V to 17 V, −40°C ≤ TA ≤ +105°C 68 90 dB VOLTAGE REGULATOR Programmable Range VREG OUT 5 VDD − 0.6 V Initial Regulator Accuracy VACC No load; VREG OUT = 14.4V 0.4 1.5 % Dropout Voltage VDO IL = 100 µA 100 150 mV IL = 5 mA 310 350 mV Line Regulation REGLINE VIN = 8.5 V to 16.5 V, VOUT = 8 V 0.01 0.20 %/V Load Regulation REGLOAD IO = 100 µA to 10 mA 0.02 0.10 %/mA Maximum Load Current IO −40°C ≤ TA ≤ +105°C 5 mA Feedback Reference Voltage VREF 1.2 V Feedback Input Bias Current IB FB −40°C ≤ TA ≤ +105°C -150 10 150 nA SYSTEM ACCURACY Total Error3, 4 VTotal Error −40°C ≤ TA ≤ +105°C 0.5 3 % POWER SUPPLY Supply Voltage VDD 7.5 16 V Supply Current ISY No load; −40°C ≤ TA ≤ +105°C 9.5 16 mA 1 Gamma curve accuracy includes resistor matching and buffer errors, but excludes the regulator error. 2 ∆VOUT is the shift from the desired output voltage under the specified current load. 3 Total error is the difference between the designed and actual output voltage divided by the actual regulator output voltage or full-scale voltage. 4 Total error includes regulator error, resistor string error, bias current effects, and buffer offset voltage. |
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