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AD9042ST Datasheet(PDF) 3 Page - Analog Devices |
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AD9042ST Datasheet(HTML) 3 Page - Analog Devices |
3 / 24 page AC SPECIFICATIONS1 Test AD9042AST Test AD9042AD Parameter (Conditions) Temp Level Min Typ Max Level Min Typ Max Units SNR 3 Analog Input 1.2 MHz +25 °CV 68 I 65 68 dB @ –1 dBFS Full V 67.5 V 67.5 dB 9.6 MHz +25 °C V 67.5 I 64.5 67.5 dB Full V 67 V 67 dB 19.5 MHz +25 °C I 64 67 I 64 67 dB Full V 66.5 V 66.5 dB SINAD 4 Analog Input 1.2 MHz +25 °C V 67.5 I 64 67.5 dB @ –1 dBFS Full V 67 V 67 dB 9.6 MHz +25 °C V 67.5 I 64 67.5 dB Full V 67 V 67 dB 19.5 MHz +25 °C I 64 67 I 64 67 dB Full V 66.5 V 66.5 dB Worst Spur 5 Analog Input 1.2 MHz +25 °C V 80 I 74 80 dBc @ –1 dBFS Full V 78 V 78 dBc 9.6 MHz +25 °C V 80 I 74 80 dBc Full V 78 V 78 dBc 19.5 MHz +25 °C I 73 80 I 73 80 dBc Full V 78 V 78 dBc Small Signal SFDR (w/Dither) 6 Analog Input @1.2 MHz Full V 90 V 90 dBFS 9.6 MHz Full V 90 V 90 dBFS 19.5 MHz Full V 90 V 90 dBFS Two-Tone IMD Rejection 7 F1, F2 @ –7 dBFS Full V 80 V 80 dBc Two-Tone SFDR (w/Dither) 8 Full V 90 V 90 dBFS Thermal Noise +25 °C V 0.33 V 0.33 LSB rms Differential Nonlinearity +25 °C I –1.0 ±0.3 +1.0 I –1.0 ±0.3 +1.0 LSB (ENCODE = 20 MSPS) Full V ±0.4 VI –1.0 +1.25 LSB Integral Nonlinearity (ENCODE = 20 MSPS) Full V ±0.75 V ±0.75 LSB Analog Input Bandwidth +25 °C V 100 V 100 MHz Transient Response +25 °CV 10 V 10 ns Overvoltage Recovery Time +25 °CV 25 V 25 ns NOTES 1All ac specifications tested by driving ENCODE and ENCODE differentially; see “ENCODING the AD9042” for details. 2C1 (Pin 10 on AD9042AST only) tied to GND through 0.01 µF capacitor. 3Analog input signal power at –1 dBFS; signal-to-noise ratio (SNR) is the ratio of signal level to total noise (first five harmonics removed). 4Analog input signal power at –1 dBFS; signal-to-noise and distortion (SINAD ) is the ratio of signal level to total noise + harmonics. 5Analog input signal power at –1 dBFS; worst spur is the ratio of the signal level to worst spur, usually limited by harmonics. 6Analog input signal power swept from –20 dBFS to –95 dBFS; dither power = –32.5 dBm; dither circuit used on input signal (see “Overcoming Static Nonlinearities with Dither”); SFDR is ratio of converter full scale to worst spur. 7Tones at –7 dBFS (F1 = 15.3 MHz, F2 = 19.5 MHz); two tone intermodulation distortion (IMD) rejection is ratio of either tone to worst third order intermod product. 8Both input tones swept from –20 to –95 dBFS; Dither power = –32.5 dBm; dither circuit used on input signal (see “Overcoming Static Nonlinearities with Dither); two tone spurious-free dynamic range (SFDR) is the ratio of converter full scale to worst spur. Specifications subject to change without notice. REV. A –3– AD9042 (AVCC = DVCC = +5 V; ENCODE & ENCODE = 41 MSPS; VREF tied to VOFFSET through 50 Ω; T MIN = –40 C, TMAX = +85 C) 2 |
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