ISL22323 Datasheet, PDF (8/18 Pages) Intersil Corporation – Dual Digitally Controlled Potentiometer XDCP

ISL22323
Operating Specifications Over the recommended operating conditions unless otherwise specified. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
(Note 21) (Note 5) (Note 21) UNIT
Cb
Capacitive Loading of SDA or SCL
(Note 19)
Total on-chip and off-chip
10
400
pF
Rpu
SDA and SCL Bus Pull-up Resistor Maximum is determined by t_R and t_F
1
kΩ
(Note 19) Off-chip
For Cb = 400pF, max is about 2kΩ ~ 2.5kΩ
For Cb = 40pF, max is about 15kΩ ~ 20kΩ
t_SU:A A0, A1, and A2 Setup Time
Before START condition
600
ns
t_HD:A A0, A1, and A2 Hold Time
After STOP condition
600
ns
NOTES:
5. Typical values are for T_A = +25°C and 3.3V supply voltage.
6. LSB: [V(R_W)₂₅₅ – V(R_W)₀]/255. V(R_W)₂₅₅ and V(R_W)₀ are V(R_W) 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.
7. ZS error = V(RW)₀/LSB.
8. FS error = [V(RW)₂₅₅ – V_CC]/LSB.
9. DNL = [V(RW)_i – V(RW)_i-1]/LSB-1, for i = 1 to 255. i is the DCP register setting.
10. INL = [V(RW)_i – i • LSB – V(RW)₀]/LSB for i = 1 to 255
11. V_MATCH= [V(RWx)i -V(RWy)i]/LSB, for i = 0 to 255, x = 0 to 1, y = 0 to 1.
12.
TC_V
=
-------^M-----^a----^x----⁽--^V----⁽---^R-----^W------⁾--ⁱ--⁾---–-----^M-----ⁱ--ⁿ----⁽--^V-----⁽--^R-----^W------⁾--ⁱ--⁾------ × ----¹---⁰----⁶----- ^{for i = 16 to 240 decimal, T = -40°C to +125°C. Max( ) is the maximum value of the wiper}
[Max(V(RW)_i) + Min(V(RW)_i)] ⁄ 2 _+165°C voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
13. MI = |RW₂₅₅ – RW₀|/255. MI is a minimum increment. RW₂₅₅ and RW₀ are the measured resistances for the DCP register set to FF hex and 00
hex respectively.
14. R_OFFSET = RW₀/MI, when measuring between RW and RL.
R_OFFSET = RW₂₅₅/MI, when measuring between RW and RH.
15. RDNL = (RW_i – RW_i-1)/MI -1, for i = 16 to 255.
16. RINL = [RW_i – (MI • i) – RW₀]/MI, for i = 16 to 255.
17. R_MATCH= [(Rx)i -(Ry)i]/MI, for i = 0 to 255, x = 0 to 1, y = 0 to 1.
18.
TC_R
=
----^[---^M-----^a----^x----⁽--^R-----ⁱ--⁾---–-----^M-----ⁱ--ⁿ----⁽--^R-----ⁱ--⁾--^]---- × ----¹----⁰---⁶-----
[Max(Ri) + Min(Ri)] ⁄ 2 +165°C
for i = 16 to 240, T = -40°C to +125°C. Max( ) is the maximum value of the resistance and Min ( ) is
the minimum value of the resistance over the temperature range.
19. This parameter is not 100% tested.
20. t_WC is the time from a valid STOP condition at the end of a Write sequence of I²C serial interface, to the end of the self-timed internal non-volatile
write cycle.
21. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
8
FN6422.1
March 13, 2008