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AD7112 Scheda tecnica(PDF) 3 Page - Analog Devices |
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AD7112 Scheda tecnica(HTML) 3 Page - Analog Devices |
3 / 12 page AD7112 REV. 0 –3– TIMING SPECIFICATIONS1 Parameter TA = +25 CTA = –40 C to +85 C Units Conditions/Comments CS to WR Setup Time tCS 0 0 ns min See Figure 3. CS to WR Hold Time tCH 0 0 ns min DAC Select to WR Setup Time tAS 4 4 ns min DAC Select to WR Hold Time tAH 0 0 ns min Data Valid to WR Setup Time tDS 55 55 ns min Data Valid to WR Hold Time tDH 10 10 ns min WR Pulse Width tWR 53 53 ns min NOTES 1Timing specifications guaranteed by design not production tested. All input signals are specified with tr = tf = 5 ns (10% to 90% of 5 V) and timed from a voltage level of 1.6 V. Specifications subject to change without notice. AC PERFORMANCE CHARACTERISTICS1 TA = TA = –40 C to Parameter +25 C +85 C Units Conditions/Comments DC Supply Rejection ∆ Gain/∆ V DD 0.001 0.005 dB/% max ∆ V DD = ± 5%. Input Code = 00000000 Digital-to-Analog Glitch Impulse 10 10 nV s typ Measured with AD843 as output amplifier for input code transition 10000000 to 00000000. Output Capacitance, COUT A, COUT B 50 50 pF max AC Feedthrough VIN A to OUT A –94 –90 dB max VIN A, VIN B = 6 V rms at 1 kHz. DAC Registers loaded with all 1s. VIN B to OUT B –94 –90 dB max Channel-to-Channel Isolation VIN A to OUT B –87 –87 dB typ VIN A = 6 V rms at 10 kHz sine wave, VIN B = 0 V. DAC Registers loaded with all 0s. VIN B to OUT A –87 –87 dB typ VIN B = 6 V rms at 10 kHz sine wave, VIN A = 0 V. DAC Registers loaded with all 0s. Digital Feedthrough 1 1 nV s typ Measured with input code transitions of all 0s to all 1s. Output Noise Voltage Density (30 Hz to 50 kHz) 15 15 nV/ √Hz typ Measured between R FB A and OUT A or between RFB B and OUT B. Total Harmonic Distortion –91 –91 dB typ VIN A = VIN B = 6 V rms at 1 kHz. DAC Registers loaded with all 0s. NOTES 1Guaranteed by design, not production tested. Specifications subject to change without notice. (VDD = +5 V 5%; 0UT A = OUT B = AGND = DGND = O V; VIN A = VIN B = 10 V) (VDD = +5 V 5%; 0UT A = OUT B = AGND = DGND = 0 V; VIN A = VIN B = 10 V. Output amplifier AD712 except where noted.) |
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