ISL23445 Intersil Corporation, ISL23445 Datasheet - Page 7

• Manufacturer Part Number: ISL23445
• Description: Low Voltage Digitally Controlled Potentiometer
• Manufacturer: Intersil Corporation

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Operating Specifications
Serial Interface Specification
V
tShdnRec
CC,
SYMBOL
Hysteresis
Ramp
SYMBOL
t
DCP
V
t
f
t
t
C
t
LEAD
t
V
R
t
V
t
t
t
t
LOGIC
V
SCK
LAG
t
CYC
WH
t
t
WL
t
DIS
SU
SO
t
HO
RO
pin
FO
OL
RI
IH
pu
H
FI
IL
V
Wiper Response Time
DCP Recall Time From Shutdown Mode
V
CC ,
Input LOW Voltage
Input HIGH Voltage
SDI and SCK Input Buffer
Hysteresis
SDO Output Buffer LOW Voltage
SDO Pull-up Resistor Off-chip
SCK, SDO, SDI, CS Pin Capacitance
SCK Frequency
SPI Clock Cycle Time
SPI Clock High Time
SPI Clock Low Time
Lead Time
Lag Time
SDI, SCK and CS Input Setup Time
SDI, SCK and CS Input Hold Time
SDI, SCK and CS Input Rise Time
SDI, SCK and CS Input Fall Time
SDO Output Disable Time
SDO Output Setup Time
SDO Output Valid Time
SDO Output Hold Time
SDO Output Rise Time
SDO Output Fall Time
V
LOGIC
Ramp Rate (Note 21)
PARAMETER
PARAMETER
7
stated. Boldface limits apply over the operating temperature range, -40°C to +125°C. (Continued)
V
CC
= 2.7V to 5.5V, V
For SCK, SDI, SDO, CS Unless Otherwise Noted.
V
V
I
I
Maximum is determined by t
maximum bus load Cb = 30pF, f
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
R
R
OL
OL
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
pu
pu
= 1.5mA, V
= 3mA, V
CS rising edge to the new position of the wiper
(Changes from 10% to 90% FS)
W, U, T options specified top to bottom
CS rising edge to wiper recalled position and RH
connection
Ramp monotonic at any level
= 1.5k, Cbus = 30pF
= 1.5k, Cbus = 30pF
> 2V
< 2V
= 1.7V to 5.5V
= 1.2V to 1.6V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
≥ 1.7V
LOGIC
ISL23445
LOGIC
LOGIC
TEST CONDITIONS
= 1.2V to 5.5V over recommended operating conditions unless otherwise
TEST CONDITIONS
> 2V
< 2V
RO
and t
SCK
= 5MHz
FO
with
0.05 x V
0.7 x V
0.1 x V
(Note 20)
(Note 20) TYP (Note 8)
0.01
MIN
200
100
100
250
250
150
-0.3
MIN
50
50
10
10
50
0
0
0
LOGIC
LOGIC
LOGIC
(Note 8)
TYP
0.4
1.5
3.5
1.5
10
0.3 x V
V
0.2 x V
(Note 20)
LOGIC
(Note 20) UNITS
MAX
100
0.4
1.5
20
60
60
MAX
5
1
50
LOGIC
LOGIC
+ 0.3
June 21, 2011
FN7874.0
UNITS
V/ms
MHz
MHz
kΩ
µs
µs
µs
µs
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V
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