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AD5547 Datasheet(PDF) 4 Page - Analog Devices |
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AD5547 Datasheet(HTML) 4 Page - Analog Devices |
4 / 20 page AD5547/AD5557 Rev. 0 | Page 4 of 20 Parameter Symbol Conditions Min Typ Max Unit AC CHARACTERISTICS4 Output Voltage Settling Time tS To ±0.1% of full scale, data cycles from zero scale to full scale to zero scale 0.5 µs Reference Multiplying BW BW VREF = 5 V p-p, data = full scale 4 MHz DAC Glitch Impulse Q VREF = 0 V, midscale to midscale – 1 7 nV-s Multiplying Feedthrough Error VOUT/VREF VREF = 100 mV rms, f = 10 kHz –65 dB Digital Feedthrough QD WR = 1, LDAC toggles at 1 MHz 7 nV-s Total Harmonic Distortion THD VREF = 5 V p-p, data = full scale, f = 1 kHz –85 dB Output Noise Density eN f = 1 kHz, BW = 1 Hz 12 nV/√Hz Analog Crosstalk CAT Signal input at Channel A and measure the output at Channel B, f = 1 kHz –95 dB 1 All static performance tests (except IOUT) are performed in a closed-loop system using an external precision OP97 I-V converter amplifier. The device RFB terminal is tied to the amplifier output. The OP97’s +IN pin is grounded, and the DAC’s IOUT is tied to the OP97’s –IN pin. Typical values represent average readings measured at 25°C. 2 Guaranteed by design; not subject to production testing. 3 All input control signals are specified with tR = tF = 2.5 ns (10% to 90% of 3 V), and are timed from a voltage level of 1.5 V. 4 All ac characteristic tests are performed in a closed-loop system using an AD841 I-V converter amplifier. tWR tDS tDH tLWD tLDAC tRS WR DATA LDAC RS Figure 3. AD5547/AD5557 Timing Diagram |
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