CS5451 Просмотр технического описания (PDF) - Cirrus Logic

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CS5451

Six-Channel Delta-Sigma Analog-to-Digital Converter

Cirrus Logic 

CS5451

SWITCHING CHARACTERISTICS (TA = -40 °C to +85 °C; VA+, VD+ = 3.0 V ±10%; VA- = -2 V

±10%; DGND = AGND = 0.0 V; Logic Levels: Logic 0 = 0.0 V, Logic 1 = VD+; CL = 50pF))

Parameter

Symbol Min

Typ

Max

Master Clock Frequency

(Note 12) XIN

3

4.000

5

Master Clock Duty Cycle

-

40

-

60

Rise Times

Any Digital Input (Note 13) trise

-

-

1.0

Any Digital Output

-

50

-

Fall Times

Any Digital Input (Note 13) tfall

Any Digital Output

-

-

1.0

-

50

-

Serial Port Timing

Serial Clock Frequency

(Note 12)

OWRS = “0”

OWRS = “1”

SCLK

SCLK

-

500

-

-

1000

-

Serial Clock

Pulse Width High (Note 12)

t1

Pulse Width Low (Note 10)

t2

SCLK falling to New Data Bit

t3

FSO Falling to SCLK Rising Delay

(Note 12)

t4

FSO Pulse Width

(Note 12)

t5

SE Rising to Output Enabled

t6

SE Falling to Output in Tri-state

t7

-

0.5

-

-

0.5

-

-

-

50

-

0.5

-

-

1

-

-

-

50

-

-

50

Notes: 12. Device parameters are specified with a 4.000 MHz clock, OWRS = 1.

13. Specified using 10% and 90% points on wave-form of interest. Output loaded with 50 pF.

Unit

MHz

%

µs

ns

µs

ns

kHz

kHz

SCLK

SCLK

ns

SCLK

SCLK

ns

ns

SDO

SCLK

FSO

MSB(V1) MSB(V1) - 1

t

3

t1 t2

t4

t5

SE

t6

LSB(I3)

t6

Figure 1. Serial Port Timing

6

DS458PP4

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