ISL90810 datasheet(5/11 Pages) INTERSIL

5 / 11 page

FN8234.1

October 13, 2005

SDA vs SCL Timing

NOTES:

1. Typical values are for TA = 25°C and 3.3V supply voltage.

2. LSB: [V(RW)255 – V(RW)0]/255. V(RW)255 and V(RW)0 are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the

incremental voltage when changing from one tap to an adjacent tap.

3. ZS error = V(RW)0/LSB.

4. FS error = [V(RW)255 – VCC]/LSB.

5. DNL = [V(RW)i – V(RW)i-1]/LSB-1, for i = 1 to 255. i is the DCP register setting.

6. INL = (V(RW)i – i • LSB – V(RW)0)/LSB, for i = 1 to 255.

for i = 16 to 240 decimal, T = -40°C to 85°C. Max( ) is the maximum value of the wiper

voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.

8. MI =

|R255 – R0|/255. R255 and R0 are the measured resistances for the DCP register set to FF hex and 00 hex respectively.

Roffset = R0/MI, when measuring between RW and RL.

9. Roffset = R255/MI, when measuring between RW and RH.

10. RDNL = (Ri – Ri-1)/MI, for i = 32 to 255.

11. RINL = [Ri – (MI • i) – R0]/MI, for i = 32 to 255.

12.

for i = 32 to 255, T = -40°C to 85°C. Max( ) is the maximum value of the resistance and Min ( ) is the

minimum value of the resistance over the temperature range.

13. This parameter is not 100% tested.

Equivalent Circuitry

tSU:STO

tDH

tHIGH

tSU:STA

tHD:STA

tHD:DAT

tSU:DAT

SCL

SDA

(INPUT TIMING)

SDA

(OUTPUT TIMING)

tLOW

tBUF

tAA

TCV

Max V RW

()

() Min V RW

()

–

Max V RW

()

() Min V RW

()

[] 2

⁄

----------------------------------------------------------------------------------------------

106

125°C

-----------------

TCR

Max Ri

() Min Ri

()

–

[]

Max Ri

() Min Ri

()

[] 2

⁄

----------------------------------------------------------------

125°C

-----------------

10pF

RTOTAL

25pF

10pF

ISL90810

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