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AD7868AR датащи(PDF) 3 Page - Analog Devices |
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AD7868AR датащи(HTML) 3 Page - Analog Devices |
3 / 16 page ABT Parameter Version 1 Version 1 Version 1 Units Test Conditions/Comments DYNAMIC PERFORMANCE 2 Signal-to-Noise Ratio 3 (SNR) @ +25 °C 70 72 70 dB min VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz TMIN to TMAX 70 71 70 dB min Typically 71.5 dB at +25 °C for 0 < V OUT < 20 kHz 4 Total Harmonic Distortion (THD) –78 –78 –76 dB max VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz Typically –84 dB at +25 °C for 0 < V OUT < 20 kHz 4 Peak Harmonic or Spurious Noise –78 –78 –76 dB max VOUT = 1 kHz Sine Wave, fSAMPLE = 83 kHz Typically –84 dB at +25 °C for 0 < V OUT < 20 kHz 4 DC ACCURACY Resolution 12 12 12 Bits Integral Nonlinearity ±1/2 ±1/2 ±1/2 LSB typ Integral Nonlinearity ±1 ±1 LSB max Differential Nonlinearity ±0.9 ±0.9 ±0.9 LSB max Guaranteed Monotonic Bipolar Zero Error ±5 ±5 ±5 LSB max Positive Full-Scale Error5 ±5 ±5 ±5 LSB max Negative Full-Scale Error5 ±5 ±5 ±5 LSB max REFERENCE OUTPUT 6 RO ADC @ +25 °C 2.99/3.01 2.99/3.01 2.99/3.01 V min/V max RO ADC TC ±25 ±25 ±25 ppm/ °C typ RO ADC TC ±40 ±50 ppm/ °C max Reference Load Change ( ∆RO DAC vs. ∆I) –1.5 –1.5 –1.5 mV max Reference Load Current Change (0–500 µA) REFERENCE INPUT RI DAC Input Range 2.85/3.15 2.85/3.15 2.85/3.15 V min/V max 3 V ± 5% Input Current 1 1 1 µA max LOGIC INPUTS (LDAC, TFS, TCLK, DT) Input High Voltage, VINH 2.4 2.4 2.4 V min VDD = 5 V ± 5% Input Low Voltage, VINL 0.8 0.8 0.8 V max VDD = 5 V ± 5% Input Current, IIN ±10 ±10 ±10 µA max VIN = 0 V to VDD Input Capacitance, CIN 7 10 10 10 pF max ANALOG INPUT Output Voltage Range ±3 ±3 ±3 V nom dc Output Impedance 0.3 0.3 0.3 Ω typ Short-Circuit Current 20 20 20 mA typ AC CHARACTERISTICS 7 Voltage Output Settling-Time Settling Time to Within ±1/2 LSB of Final Value Positive Full-Scale Change 3 3 3 µs max Typically 2 µs Negative Full-Scale Change 3 3 3 µs max Typically 2.5 µs Digital-to-Analog Glitch Impulse 10 10 10 nV secs typ DAC Code Change All 1s to All 0s Digital Feedthrough 2 2 2 nV secs typ VIN to VOUT Isolation 100 100 100 dB typ VIN = ± 3 V, 41.5 kHz Sine Wave POWER REQUIREMENTS As per ADC Section NOTES 1Temperature ranges are as follows: A/B Versions, –40 °C to +85°C; T Version, –55°C to +125°C. 2V OUT (pk–pk) = ± 3 V. 3SNR calculation includes distortion and noise components. 4Using external sample and hold. 5Measured with respect to RI DAC and includes bipolar offset error. 6For capacitive loads greater than 50 pF a series resistor is required (see INTERNAL REFERENCE section). 7Sample tested @ +25 °C to ensure compliance. Specifications subject to change without notice. ORDERING GUIDE Relative Temperature Accuracy Package Model Range SNR (LSB) Option* AD7868AN –40 °C to +85°C 70 dB ±1/2 typ N-24 AD7868AQ –40 °C to +85°C 70 dB ±1/2 typ Q-24 AD7868BN –40 °C to +85°C 72 dB ±1 max N-24 AD7868BQ –40 °C to +85°C 72 dB ±1 max Q-24 AD7868AR –40 °C to +85°C 70 dB ±1/2 typ R-28 AD7868BR –40 °C to +85°C 72 dB ±1 max R-28 *N = Plastic DIP; Q = Cerdip; R = SOIC (Small Outline IC). DAC SECTION AD7868 –3– REV. B (VDD = +5 V 5%, VSS = –5 V 5%, AGND = DGND = 0 V, RI DAC = +3 V and decoupled as shown in Figure 2, VOUT Load to AGND; RL = 2 k Ω, C L = 100 pF. All specifications TMIN to TMAX unless otherwise noted.) |
Аналогичный номер детали - AD7868AR |
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Аналогичное описание - AD7868AR |
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