10
FN8189.4
September 2, 2015
Increment/Decrement Wiper Counter Register (WCR)
Global Transfer Data Register (DR) to Wiper Counter Register (WCR)
Global Transfer Wiper Counter Register (WCR) to Data Register (DR)
Read Status
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
WCR
addresses
increment/decrement
(sent by master on SDA)
CS
Rising
Edge
010100
A
1
A
0
0010XX
P
1
P
0
I/
D
I/
D
....
I/
D
I/
D
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR
addresses
CS
Rising
Edge
010100
A
1
A
0
0001
R
1
R
0
00
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
DR
addresses
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
010100
A
1
A
0
1000
R
1
R
0
00
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
wiper
addresses
Data Byte
(sent by X9400 on SO)
CS
Rising
Edge
010100
A
1
A
0
010100010000000
W
I
P
X9400
11
FN8189.4
September 2, 2015
ABSOLUTE MAXIMUM RATINGS
Temperature under bias .................... -65C to +135C
Storage temperature.......................... -65C to +150C
Voltage on SCK, SCL or any address
input with respect to V
SS
......................... -1V to +7V
Voltage on V+ (referenced to V
SS
) ........................ 10V
Voltage on V- (referenced to V
SS
) ........................-10V
(V+) - (V-)............................................................... 12V
Any V
H
....................................................................V+
Any V
L
...................................................................... V-
Lead temperature (soldering, 10 seconds)........ 300C
I
W
(10 seconds)................................................ ±12mA
COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only; functional operation of the
device (at these or any other conditions above those
listed in the operational sections of this specification)
is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
ANALOG CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.)
Notes: (1) Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when
used as a potentiometer.
(2) Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a
potentiometer. It is a measure of the error in step size.
(3) MI = RTOT/63 or (R
H
- R
L
)/63, single pot
Symbol Parameter
Limits
Test ConditionsMin. Typ. Max. Unit
R
TOTAL
End to end resistance ±20 %
Power rating 50 mW 25C, each pot
I
W
Wiper current ±6 mA
R
W
Wiper resistance 150 250 Wiper Current = 1mA,
V
CC
=3V
40 100 Wiper Current = 1mA,
V
CC
=5V
Vv+ Voltage on V+ Pin X9400 +4.5 +5.5 V
X9400-2.7 +2.7 +5.5
Vv- Voltage on V- Pin X9400 -5.5 -4.5 V
X9400-2.7 -5.5 -2.7
V
TERM
Voltage on any V
H
/R
H
or V
L
/R
L
Pin V- V+ V
Noise -120 dBV Ref: 1kHz
Resolution 1.6 %
Absolute linearity
(1)
-1 +1 MI
(3)
R
w(n)(actual)
- R
w(n)(expected)
Relative linearity
(2)
-0.2 +0.2 MI
(3)
R
w(n + 1)
- [R
w(n) + MI
]
Temperature coefficient of R
TOTAL
300 ppm/C
Ratiometric temp. coefficient ±20 ppm/°C
C
H
/C
L
/C
W
Potentiometer capacitances 10/10/25 pF See Spice Macromodel
I
AL
R
H
, R
L
, R
W
leakage current 0.1 10 µA V
IN
= V
SS
to V
CC
. Device is in
stand-by mode.
RECOMMENDED OPERATING CONDITIONS
Temp Min. Max.
Commercial 0C+70C
Industrial -40C+85C
Device Supply Voltage (V
CC
) Limits
X9400 5V 10%
X9400-2.7 2.7V to 5.5V
X9400
12
FN8189.4
September 2, 2015
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
ENDURANCE AND DATA RETENTION
CAPACITANCE
POWER-UP TIMING
POWER-UP REQUIREMENTS (Power-up sequencing
can affect correct recall of the wiper registers)
The preferred power-on sequence is as follows: First
V
CC
, then the potentiometer pins, R
H
, R
L
, and R
W
.
Voltage should not be applied to the potentiometer
pins before V+ or V- is applied. The V
CC
ramp rate
specifi-cation should be met, and any glitches or slope
changes in the V
CC
line should be held to <100mV if
possible. If V
CC
powers down, it should be held below
0.1V for more than 1 second before powering up again
in order for proper wiper register recall. Also, V
CC
should not reverse polarity by more than 0.5V. Recall
of wiper position will not be complete until V
CC
, V+
and V-reach their final value.
EQUIVALENT A.C. LOAD CIRCUIT
Symbol Parameter
Limits
Test ConditionsMin. Typ. Max. Units
I
CC1
V
CC
supply current (Active) 400 µA f
SCK
= 2MHz, SO = Open,
Other Inputs = V
SS
I
CC2
V
CC
supply current (Nonvolatile
Write)
1mAf
SCK
= 2MHz, SO = Open,
Other Inputs = V
SS
I
SB
V
CC
current (standby) 1 µA SCK = SI = V
SS
, Addr. = V
SS
I
LI
Input leakage current 10 µA V
IN
= V
SS
to V
CC
I
LO
Output leakage current 10 µA V
OUT
= V
SS
to V
CC
V
IH
Input HIGH voltage V
CC
x 0.7 V
CC
+ 0.5 V
V
IL
Input LOW voltage -0.5 V
CC
x 0.1 V
V
OL
Output LOW voltage 0.4 V I
OL
= 3mA
Parameter Min. Unit
Minimum endurance 100,000 Data changes per bit per register
Data retention 100 years
Symbol Test Max. Unit Test Conditions
C
OUT
(4)
Output capacitance (SO) 8 pF V
OUT
= 0V
C
IN
(4)
Input capacitance (A0, A1, SI, and SCK) 6 pF V
IN
= 0V
Symbol Parameter Min. Max. Unit
t
PUR
(5)
Power-up to initiation of read operation 1 ms
t
PUW
(5)
Power-up to initiation of write operation 5 ms
t
R
V
CC
(4)
V
CC
Power-up ramp 0.2 50 V/msec
X9400

X9400WS24IZT1

Mfr. #:
Manufacturer:
Renesas / Intersil
Description:
Digital Potentiometer ICs X9400WS24IZ QD CMOS EEPOT 10KOHM S IND
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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