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componentes Descripción

Fabricante

AK5370

USB I/F A/D Converter

Asahi Kasei Microdevices 

ASAHI KASEI

[AK5370]

Digital DC Characteristics

Ta=0 - 70°C; VD=3.0 - 3.6V; DGND=0V Measurement under static state

All digital pins except DP, DN. Schmitt hysteresis level of RST pin and levels of all test pins will not be tested.

Parameter

Symbol

Min

Typ

Max

Units

AGCE pin “H” level input voltage

VIH

70%VA

V

AGCE pin “L” level input voltage

VIL

30%VA

V

RSTN pin “H” level voltage

VIHR

2.0

V

RSTN pin “L” level voltage

VILR

0.8

V

“H” level output voltage

IOH= 2mA

VOH

2.4

V

“L” level output voltage

IOL= -2mA

VOL

0.6

V

Input Leakage Current

Iin

±10

µA

Ta=25°C, VA=VD=3.3V

Parameter

Master Clock Frequency

Reset input width @RSTN pin(low active)

Singe Ended Receiver Threshold

Switching Characteristics

Symbol

Min

MCLK

-

Wrst

1.0

Vse

0.8

Typ

11.2896

Max

-

2.0

Units

MHz

us

V

Main Clock Stable Time

Tostb

100

ms

Vse(max) of D+ to stabilized MCLK

( X’tal oscillator start up + PLL lock -in )

Reset Signal Recognition

Both D+ and D- < Vse(min) to Reset mode

Trst_rec

2.5

5.5

µs

Device Ready

Tdrr

10

ms

Ready for transaction after reset

Suspend Recognition

Tsus_rec

3.0

ms

Idle state ( D+ > Vse(max) & D - < Vse(min) )

to Suspend mode

Resume Time

Tresm

30

ms

First flip of D+/D- from Idle sate

To Device Ready*)

Device Ready: VREF, X’tal oscillator, and PLL get stable and bus trans action with normal rate is ready.

VD

D+

D- "L"

RST

Master

Clock

Tostb

Reset Mode

Device

Connected

Trst_rec

Tdrr

Reset Mode

Figure 1. Mode change with respect to BUS States 1 (Power on and device connected)

MS0027-E-00

5

2000/05

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