ISL90726UIE627Z-TK Intersil, ISL90726UIE627Z-TK Datasheet - Page 5

• Manufacturer Part Number: ISL90726UIE627Z-TK
• Description: IC POT DGTL 50K OHM SC70-6
• Manufacturer: Intersil
• Series: XDCP™r

Specifications of ISL90726UIE627Z-TK

• Taps: 128
• Resistance (ohms): 50K
• Number Of Circuits: 1
• Temperature Coefficient: 45 ppm/°C Typical
• Memory Type: Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-70-6, SC-88, SOT-363
• Resistance In Ohms: 50K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL90726UIE627Z-TKTR

Operating Specifications
NOTES:
SDA vs SCL Timing
Principles of Operation
The ISL90726 is an integrated circuit incorporating one DCP
with its associated registers and an I
providing direct communication between a host and the
potentiometer.
DCP Description
The DCP is implemented with a combination of resistor
elements and CMOS switches. The physical ends of the DCP
are equivalent to the fixed terminals of a mechanical
potentiometer (R
connected to intermediate nodes, and is equivalent to the wiper
terminal of a mechanical potentiometer. The position of the
wiper terminal within the DCP is controlled by an 7-bit volatile
Wiper Register (WR). The DCP has its own WR. When the WR
of the DCP contains all zeroes (WR<6:0> = 00h), its wiper
10. V
12. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
11. These are I
2. Typical values are for T
3. LSB: [V(R
4. MI =
5. R
6. R
7. R
8.
9. This parameter is not 100% tested.
Rpu (Note 11)
Cb (Note 11)
(OUTPUT TIMING)
SYMBOL
(INPUT TIMING)
incremental voltage when changing from one tap to an adjacent tap.
R
TC
characterization and are not production tested.
IL
OFFSET
DNL
INL
OFFSET
R
= 0V, V
|
= [R
R
=
= (R
127
--------------------------------------------------------------- -
[
Max Ri
i
[
W
= R
= R
SDA
SCL
i
– (MI • i) – R
Max Ri
IH
2
– R
– R
SDA
)
C-specific parameters and are not directly tested. However, they are used in the device testing to validate specifications.
127
Capacitive Loading of SDA or
SCL
SDA and SCL Bus Pull-up
Resistor Off-chip
= V
127
H
0
(
t
0
/
i-1
SU:STA
MI, when measuring between R
(
|
and R
– V(R
/
/
CC.
127. R
)
)
MI, when measuring between R
/
MI, for i = 32 to 127.
+
) Min Ri
–
Min Ri
W
PARAMETER
L
A
0
127
)
]
pins). The R
(
0
/
= +25°C and 3.3V supply voltage.
MI, for i = 32 to 127.
]
(
/
127. V(R
and R
)
t
] 2 ⁄
HD:STA
5
)
]
(Continued)
×
0
-------------------- -
+125°C
are the measured resistances for the DCP register set to FF hex and 00 hex respectively.
W
2
10
W
C serial interface
)
t
127
F
6
pin of the DCP is
t
SU:DAT
and V(R
for i = 32 to 127, 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.
Total on-chip and off-chip
Maximum is determined by t
For Cb = 400pF, max is about 2kΩ ~ 2.5kΩ.
For Cb = 40pF, max is about 15kΩ ~ 20kΩ.
W
W
and R
W
and R
)
0
t
HIGH
are V(R
L
.
H
.
TEST CONDITIONS
ISL90726
W
) for the DCP register set to FF hex and 00 hex respectively. LSB is the
t
LOW
t
HD:DAT
terminal (R
WR of the DCP contains all ones (WR<6:0> = 7Fh), its wiper
terminal (R
value of the WR increases from all zeroes (00h) to all ones
(127 decimal), the wiper moves monotonically from the
position closest to R
connected to a device pin. The net effect is the resistance
between R
While the ISL90726 is being powered up, the WR is reset to
40h (64 decimal), which locates R
between R
The WR and IVR can be read or written directly using the
I
2
R
C serial interface as described in the following sections.
and t
F
.
t
R
W
L
W
W
and R
) is closest to its “Low” terminal (R
) is closest to its “High” terminal (R
and R
t
AA
H
L
L
.
(Note 12)
increases monotonically.
t
to the position closest to R
DH
MIN
10
1
(Note 2)
W
TYP
t
BUF
roughly at the center
t
SU:STO
(Note 12) UNIT
MAX
L
400
H
). When the
H
). As the
August 26, 2008
. R
H
FN8244.4
is not
kΩ
pF