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AD9042ST Arkusz danych(PDF) 7 Page - Analog Devices |
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AD9042ST Arkusz danych(HTML) 7 Page - Analog Devices |
7 / 24 page N DIGITAL OUTPUTS (D11–D0) N – 1 N – 2 tA = –250 PS TYP N + 1 tOD = 9ns TYP ANALOG INPUT (AIN) ENCODE INPUTS (ENCODE) N Figure 1. Timing Diagram REV. A –7– REV. A –7– Equivalent Circuits–AD9042 VOFFSET 200 Ω 6pF 250 Ω 250 Ω AVCC AIN 250µA +3.5V AVCC 250µA AVCC +1.5V Figure 2. Analog Input Stage AVCC AVCC TIMING CIRCUITS R2 8k Ω R2 8k Ω R1 17k Ω R1 17k Ω ENCODE ENCODE AVCC Figure 3. Encode Inputs AVCC AVCC C1 (PIN 10 *) CURRENT MIRROR VREF AVCC *AD9042AST ONLY INTERNAL NODE ON AD9042AD Figure 4. Compensation Pin, C1 VREF DVCC DVCC CURRENT MIRROR CURRENT MIRROR D0–D11 Figure 5. Digital Output Stage VREF AVCC 0.5mA 2.4V AVCC Figure 6. 2.4 V Reference 4 5 8 28 17 +5V +5V 2,12,14 10k Ω 200kHz SINEWAVE TTL CLOCK OSC. 0.1µF 10 9 49.9 Ω NOTE: ALL +5V SUPPLY PINS & VREF PIN BYPASSED TO GND WITH A 0.1µF CAPACITOR. PINS 15,16 ARE NOT CONNECTED. NC 1,3,6,7,11,13 ENCODE ENCODE AIN VOFFSET VREF D11 D0 Figure 7. AD9042AD Burn-In Diagram |
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