LTC2274I(RevB) 查看數據表（PDF） - Linear Technology

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LTC2274I
(Rev.:RevB)

16-Bit, 105Msps Serial Output ADC

Linear Technology 

APPLICATIONS INFORMATION

1.25V

3.3V

1μF

2, 3 LTC6652-2.5 6

4, 5, 7, 8

VCM

2.2μF

SENSE LTC2274

2.2μF

2274 F07

Figure 7. A 2.25V Range ADC with

an External 2.5V Reference

LTC2274

LTC2274

VDD

ENC+

ENC–

VDD

1.6V

6k

VDD 1.6V

6k

TO INTERNAL

ADC CLOCK

DRIVERS

2274 F08a

Figure 8a. Equivalent Encode Input Circuit

0.1μF T1

ENC+

50Ω

0.1μF

50Ω

100Ω

8.2pF

LTC2274

0.1μF

ENC–

VTHRESHOLD = 1.6V

ENC+

1.6V ENC– LTC2274

0.1μF

T1 = MA/COM ETC1-1-13

RESISTORS AND CAPACITORS

ARE 0402 PACKAGE SIZE

2274 F08b

2274 F09

Figure 8b. Transformer Driven Encode

Figure 9. Single-Ended ENC Drive,

Not Recommended for Low Jitter

3.3V

MC100LVELT22 3.3V 130Ω

Q0

D0

130Ω

ENC+

Q0

83Ω

ENC– LTC2274

83Ω

2274 F10

Figure 10. ENC Drive Using a CMOS to PECL Translator

2274fb

21

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