AD7989-5BCPZ-R2 datasheet(5/24 Pages) AD

5 / 24 page

Data Sheet

AD7989-1/AD7989-5

Rev. B | Page 5 of 24

TIMING SPECIFICATIONS

VDD = 2.37 V to 2.63 V, VIO = 2.3 V to 5.5 V, TA = −40°C to +85°C, unless otherwise noted.1

Table 4.

Parameter

Symbol

Min

Typ

Max

Unit

THROUGHPUT RATE

AD7989-1

100

kSPS

AD7989-5

500

kSPS

CONVERSION AND ACQUISITION TIMES

Conversion Time: CNV Rising Edge to Data Available

tCONV

AD7989-1

9500

AD7989-5

1600

Acquisition Time

tACQ

AD7989-1

500

AD7989-5

400

Time Between Conversions

tCYC

AD7989-1

μs

AD7989-5

μs

CNV PULSE WIDTH (CS MODE)

tCNVH

500

SCK

SCK Period (CS Mode)

tSCK

VIO Above 4.5 V

10.5

VIO Above 3 V

VIO Above 2.7 V

VIO Above 2.3 V

SCK Period (Chain Mode)

tSCK

VIO Above 4.5 V

11.5

VIO Above 3 V

VIO Above 2.7 V

VIO Above 2.3 V

SCK Low Time

tSCKL

4.5

SCK High Time

tSCKH

4.5

SCK Falling Edge to Data Remains Valid

tHSDO

SCK Falling Edge to Data Valid Delay

tDSDO

VIO Above 4.5 V

9.5

VIO Above 3 V

VIO Above 2.7 V

VIO Above 2.3 V

CS MODE

CNV or SDI Low to SDO D17 MSB Valid

tEN

VIO Above 3 V

VIO Above 2.3V

CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode)

tDIS

SDI Valid Setup Time from CNV Rising Edge (CS Mode)

tSSDICNV

SDI Valid Hold Time from CNV Rising Edge (CS Mode)

tHSDICNV

CHAIN MODE

SCK Valid Setup Time from CNV Rising Edge

tSSCKCNV

SCK Valid Hold Time from CNV Rising Edge

tHSCKCNV

SDI Valid Setup Time from SCK Falling Edge

tSSDISCK

SDI Valid Hold Time from SCK Falling Edge

tHSDISCK

1 See Figure 2 and Figure 3 for load conditions.

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