AD10242/PCB 查看數據表（PDF） - Analog Devices

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AD10242/PCB

Dual, 12-Bit, 40 MSPS MCM A/D Converter with Analog Input Signal Conditioning

Analog Devices 

N

N+1

N+2

N+3

N+4

N+5

AIN

ENCODE

DIGITAL

OUTPUTS

tA = 1.0ns TYP

tOD = 12ns TYP

N–2

N–1

N

N+1

N+2

Figure 1. Timing Diagram

AD10242

TTL CLOCK

ENC

D11

f ≈ 10MHz

ENC

D10

D9

1/2

D8

AIN3

AD10242

D7

D6

AIN2

SHOWN

D5

D4

D3

AIN1

D2

D1

D0

NOTE: ALL ±5V SUPPLY PINS BYPASSED

TO GND WITH A 0.1µF CAPACITOR

Figure 2. Equivalent Burn-In Circuit

EQUIVALENT CIRCUITS

AIN3

AIN2

AIN1

R4

200Ω

R3

100Ω

R2

21Ω

R1

79Ω

TO AD9631

Figure 3. Analog Input Stage

AVCC

AVCC

R1

17k⍀

ENCODE

R2

8k⍀

TIMING

CIRCUITS

R1 AVCC

17k⍀

R2

8k⍀

ENCODE

Figure 4. Encode Inputs

DVCC

CURRENT

MIRROR

VREF

DVCC

D0 – D11

CURRENT

MIRROR

Figure 5. Digital Output Stage

REV. A

–7–

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