AD9531 datasheet(20/88 Pages) AD

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AD9531

Data Sheet

SERIAL CONTROL PORT

Table 34.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

INPUT (SCLK, SDIO, CS)

1.8 V Supply

DVDD_IO (Pin 18) powered with 1.8 V

Input Voltage

Logic 1

1.3

Logic 0

0.6

Input Current (IINH, IINL)

−2

µA

Input Capacitance

3.3 V Supply

DVDD_IO (Pin 18) powered with 3.3 V

Input Voltage

Logic 1

1.3

Logic 0

0.6

Input Current (IINH, IINL)

−2

µA

Input Capacitance

OUTPUT (SDIO)

1.8 V Supply

DVDD_IO (Pin 18) powered with 1.8 V

Output Voltage

Logic 1

VDD − 0.2

1 mA load current

Logic 0

0.2

1 mA load current

3.3 V Supply

DVDD_IO (Pin 18) powered with 3.3 V

Output Voltage

Logic 1

VDD − 0.2

1 mA load current

Logic 0

0.2

1 mA load current

Serial Control Port Timing

Table 35.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

1.8 V SUPPLY

DVDD_IO (Pin 18) powered with 1.8 V

SCLK

Clock Rate, 1/tSCLK

MHz

Pulse Width High, tHIGH

2.1

Pulse Width Low, tLOW

1.7

SDIO to SCLK Setup, tDS

0.3

SCLK to SDIO Hold, tDH

1.0

SCLK to Valid SDIO, tDV

6.5

CS to SCLK Setup (tS) and Hold (tH)

1.1

CS Minimum Pulse Width High

1.4

3.3 V SUPPLY

DVDD_IO (Pin 18) powered with 3.3 V

SCLK

Clock Rate, 1/tSCLK

MHz

Pulse Width High, tHIGH

0.8

Pulse Width Low, tLOW

2.5

SDIO to SCLK Setup, tDS

1.8

SCLK to SDIO Hold, tDH

0.4

SCLK to Valid SDIO, tDV

6.5

CS to SCLK Setup (tS) and Hold (tH)

2.4

CS Minimum Pulse Width High

3.0

Rev. 0 | Page 20 of 88

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