AK5370 データシートの表示（PDF） - Asahi Kasei Microdevices

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AK5370

USB I/F A/D Converter

Asahi Kasei Microdevices 

ASAHI KASEI

VD”H”

D+

D-

RST”H”

Master

Clock

Tsus_rec

Tresm

Figure 2. Mode Change with respect to Bus States 2 (Bus transactions)

[AK5370]

Transmitter Characteristics

Ta=25°C; VD=3.3V; DGND=0V; CL=50pF

Parameter

Symbol Pins

Conditions

Min

Typ

Max Units

Data Rate

DR

DP,DN

11.97

12

12.03 MHz

Output Impedance (Hi)

Roh DP, DN

DP, DN=”H”

30

Ω

Output Impedance (Lo)

Rol

DP, DP

DP, DN=”L”

30

Ω

“H” level Output Voltage

Vohd DP, DN

IOH=-200uA

2.8

V

“L” level Output Voltage

Vold DP, DN

IOH=2.2mA

0.3

V

Tri-state Leakage Current

Iolk DP, DN 0 < DP, DN< 3.3V -10

10

µA

Rise/Fall Time

Trf/Tff DP, DN

4

12

20

ns

Rise/Fall Time Matching

Trfm DP, DN

100

%

Crossover Point

Vcrs DP, DN

1.6

V

Trf

DP, DN

Trs

Tff

Tfs

90%VDD

10%VDD

Figure 3. Rise/Fall Time

DP, DN

Vcrs

Figure 4. Crossover Point

MS0027-E-00

6

2000/05

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