ISL22511 Datasheet, PDF (6/13 Pages) Intersil Corporation – Low Noise, Low Power, 32 Taps, Push Button Controlled Potentiometer Single Push Button Controlled Potentiometer XDCP

ISL22511
AC Electrical Specifications Over recommended operating conditions unless otherwise specified.
SYMBOL
PARAMETER
MIN
(Note 18)
TYP
(Note 5)
MAX
(Note 18)
UNIT
t_GAP
Time Between Two Separate Push Button Events
2
ms
t_DB
Debounce Time
15
28
ms
t_{S SLOW} Wiper Change on a Slow Mode
100
250
390
ms
t_{S FAST} Wiper Change on a Fast Mode
25
50
78
ms
t_stdn
Time to Enter Shutdown Mode (keep PU and PD LOW)
2
s
(Note 17)
t_PU
t_R VCC
NOTES:
Power-Up to Wiper Stable
V_CC Power-Up Rate
500
µs
0.2
50
V/ms
5. Typical values are for T_A = +25°C and 3.3V supply voltage.
6. LSB: [V(RW)₃₁ – V(RW)₀]/31. V(RW)₃₁ and V(RW)₀ are voltage on RW pin for the DCP register set to 1F 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)₃₁ – V_CC]/LSB.
9. DNL = [V(RW)_i – V(RW)_i-1]/LSB -1, for i = 1 to 31; i is the DCP register setting.
10. INL = [V(RW)_i – i • LSB – V(RW)]/LSB for i = 1 to 31
11. _TCV
=
-------^M-----^a----^x----⁽--^V----⁽---^R-----^W------⁾--ⁱ--⁾---–-----^M-----ⁱ--ⁿ----⁽--^V-----⁽--^R-----^W------⁾--ⁱ--⁾------ × ------¹---⁰----⁶-------^{for i = 5 to 31 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.
12. MI = |RW₃₁ – RW₀|/31. MI is a minimum increment. RW₃₁ and RW₀ are the measured resistances for the DCP register set to 1F hex and 00
hex respectively.
13. Roffset = RW₀/MI, when measuring between RW and RL.
Roffset = RW₃₁/MI, when measuring between RW and RH.
14. RDNL = (RW_i – RW_i-1)/MI, for i = 1 to 31.
15. RINL = [RW_i – (MI • i) – RW₀]/MI, for i = 1 to 31.
16.
TC_R
=
----^[---^M-----^a----^x----⁽--^R-----ⁱ--⁾---–-----^M-----ⁱ--ⁿ----⁽--^R-----ⁱ--⁾--^]----
[Max(Ri) + Min(Ri)] ⁄ 2
×
------¹---⁰----⁶-------
+ 165 °C
for i = 5 to 31, T
minimum value
= -40°C to +125°C. Max( ) is the maximum value
of the resistance over the temperature range.
of
the
resistance
and
Min
(
)
is
the
17. Limits should be considered typical and are not production tested.
18. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested.
Slow Mode Timing
t_DB
PU
t_GAP
MI^*
V_W
*MI in the AC timing diagram refers to the minimum incremental change in the wiper voltage.
6
FN6678.1
July 16, 2009