X9314WM3 [XICOR]
E2POT⑩ Nonvolatile Digital Potentiometer; E2POT⑩非易失性数字电位计
| 型号： | X9314WM3 |
| 厂家： | 
XICOR INC. |
| 描述： | E2POT⑩ Nonvolatile Digital Potentiometer |
| 文件： | 总10页 (文件大小：56K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
APPLICATION NOTES
A V A I L A B L E
AN42 • AN44–50 • AN52 • AN53 • AN71 • AN73
Terminal Voltage ±5V, 32 Taps, Log Taper
X9314
E2POT™ Nonvolatile Digital Potentiometer
FEATURES
DESCRIPTION
• Low Power CMOS
The Xicor X9314 is a solid state nonvolatile potentiom-
eter and is ideal for digitally controlled resistance trim-
ming.
—V = 3V to 5.5V
CC
—Active Current, 3mA Max
—Standby Current, 500µA Max
• 31 Resistive Elements
The X9314 is a resistor array composed of 31 resistive
elements. Between each element and at either end are
tappointsaccessibletothewiperelement. Thepositionof
the wiper element is controlled by the CS, U/D, and INC
inputs. The position of the wiper can be stored in nonvola-
tile memory and then be recalled upon a subsequent
power-up operation.
—Temperature Compensated
—±20% End to End Resistance Range
— –5V to +5V Range
• 32 Wiper Tap Points
—Wiper Positioned via Three-Wire Interface
—Similar to TTL Up/Down Counter
—Wiper Position Stored in Nonvolatile
Memory and Recalled on Power-Up
• 100 Year Wiper Position Data Retention
• X9314W = 10KΩ
All Xicor nonvolatile Digitally Controlled Potentiometers
are designed and tested for applications requiring ex-
tended endurance and data retention.
• Packages
—8-Lead MSOP
—8-Lead PDIP
—8-Lead SOIC
FUNCTIONAL DIAGRAM
U/D
INC
CS
5-BIT
UP/DOWN
COUNTER
31
V
H
30
29
28
5-BIT
NONVOLATILE
MEMORY
ONE
OF
THIRTY-
TWO
TRANSFER
GATES
RESISTOR
ARRAY
DECODER
2
1
0
STORE AND
RECALL
CONTROL
CIRCUITRY
V
CC
GND
V
V
L
W
6427 FHD F01
E2POT™ is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
6427-1.7 6/12/96 T3/C1/D8 NS
Characteristics subject to change without notice
1
X9314
PIN DESCRIPTIONS
PIN CONFIGURATION
V and V
H
L
8-LEAD DIP/SOIC
The high (V ) and low (V ) terminals of the X9314
H
L
INC
U/D
1
2
3
4
8
7
6
5
V
are equivalent to the fixed terminals of a mechanical
potentiometer. The minimum voltage is –5V and the
maximum is +5V. It should be noted that the terminology
CC
CS
X9314
V
H
V
L
V
of V and V references the relative position of the
L
H
V
SS
W
terminal in relation to wiper movement direction
selected by the U/D input and not the voltage potential on
the terminal.
8-LEAD MSOP
1
8
7
6
5
V
H
U/D
INC
V
V
W
2
3
4
V
SS
Vw is the wiper terminal, equivalent to the movable
terminal of a mechanical potentiometer. The position
of the wiper within the array is determined by the
control inputs. The wiper terminal series resistance is
typically 40Ω.
X9314
V
W
CC
V
CS
L
6427 ILL F02.2
Up/Down (U/D)
PIN NAMES
Symbol
The U/D input controls the direction of the wiper move-
ment and whether the counter is incremented or
decremented.
Description
V
V
V
V
V
High Terminal
Wiper Terminal
Low Terminal
Ground
H
Increment (INC)
W
L
The INC input is negative-edge triggered. Toggling INC
will move the wiper and either increment or decrement
thecounterinthedirectionindicatedbythelogiclevelon
the U/D input.
SS
CC
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
U/D
INC
CS
Chip Select (CS)
The device is selected when the CS input is LOW. The
current counter value is stored in nonvolatile memory
when CS is returned HIGH while the INC input is also
HIGH. After the store operation is complete the X9314
will be placed in the low power standby mode until the
device is selected once again.
6427 PGM T01
Typical Attenuation Characteristics (dB)
0
-20
-40
-43.5
-60
24
16
31
28
20
8
4
12
0
TAP POSITION
6427 ILL F07
2
X9314
DEVICE OPERATION
Operation Notes
There are three sections of the X9314: the input control,
counteranddecodesection;thenonvolatilememory;and
the resistor array. The input control section operates just
like an up/down counter. The output of this counter is
decoded to turn on a single electronic switch connecting
a point on the resistor array to the wiper output. Under the
proper conditions the contents of the counter can be
stored in nonvolatile memory and retained for future use.
The resistor array is comprised of 31 individual resistors
connected in series. At either end of the array and
between each resistor is an electronic switch that
transfers the potential at that point to the wiper.
The system may select the X9314, move the wiper and
deselect the device without having to store the latest
wiper position in nonvolatile memory. The wiper
movement is performed as described above; once the
new position is reached, the system would keep the INC
LOW while taking CS HIGH. The new wiper position
would be maintained until changed by the system or
until a power-up/down cycle recalled the previously
stored data.
This would allow the system to always power-up to a
preset value stored in nonvolatile memory; then during
system operation minor adjustments could be made.
The adjustments might be based on user preference,
system parameter changes due to temperature drift,
etc...
TheINC,U/DandCS inputscontrolthemovementofthe
wiper along the resistor array. With CS set LOW the
X9314 is selected and enabled to respond to the
U/DandINC inputs.HIGHtoLOWtransitionsonINC will
increment or decrement (depending on the state of the
U/D input) a five bit counter. The output of this counter
is decoded to select one of thirty-two wiper positions
along the resistive array.
The state of U/D may be changed while CS remains
LOW. This allows the host system to enable the X9314
and then move the wiper up and down until the proper
trim is attained.
T
/R
IW TOTAL
The wiper, when at either fixed terminal, acts like its
mechanical equivalent and does not move beyond the
last position. That is, the counter does not wrap around
when clocked to either extreme.
The electronic switches on the X9314 operate in a
“make before break” mode when the wiper changes tap
positions. If the wiper is moved several positions mul-
tiple taps are connected to the wiper for t (INC to V
IW
W
The value of the counter is stored in nonvolatile memory
whenever CS transistions HIGH while the INC input is
also HIGH.
change). The R
value for the device can tempo-
TOTAL
rarily be reduced by a significant amount if the wiper is
moved several positions.
When the X9314 is powered-down, the last counter
position stored will be maintained in the nonvolatile
memory. When power is restored, the contents of the
memoryarerecalledandthecounterisresettothevalue
last stored.
R
with V Removed
CC
TOTAL
Theendtoendresistanceofthearraywillfluctuateonce
is removed.
V
CC
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
3
X9314
ABSOLUTE MAXIMUM RATINGS*
*COMMENT
Temperature under Bias .................. –65°C to +135°C
Storage Temperature ....................... –65°C to +150°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation
of the device at these or any other conditions above
those listed in the operational sections of this specifica-
tion is not implied. Exposure to absolute maximum
ratingconditionsforextendedperiodsmayaffectdevice
reliability.
Voltage on CS, INC, U/D and V
CC
with Respect to V ............................... –1V to +7V
SS
L
Voltage on V and V
H
Referenced to V
................................. –8V to +8V
SS
∆V = |V –V |
H
L
X9314W .......................................................... 10V
Lead Temperature (Soldering 10 seconds)....... 300°C
Wiper Current..................................................... ±1mA
ANALOG CHARACTERISTICS
Electrical Characteristics
Temperature Coefficient
End-to-End Resistance Tolerance ..................... ±20%
Power Rating at 25°C
X9314W ...................................................... 10mW
Wiper Current............................................ ±1mA Max.
Typical Wiper Resistance......................... 40Ω at 1mA
Typical Noise..........................< –120dB/ Hz Ref: 1V
(–40°C to +85°C)
X9314W .....................................+600 ppm/°C Typical
Ratiometric Temperature Coefficient ............ ±20 ppm
Wiper Adjustability
Unlimited Wiper Adjustment (Non-Store operation)
Wiper Position Store Operations ............. 100,000
Data Changes
Relative Variation
Relative variation is a measure of the error in step size
Physical Characteristics
betweentaps=log(V
tap n = 2 – 31
)–log(V
)=0.07±0.003for
w(n)
w(n-1)
Marking Includes
Manufacturer’s Trademark
Resistance Value or Code
Date Code
Typical Electrical Taper
100.0%
90.0%
80.0%
70.0%
60.0%
50.0%
40.0%
30.0%
20.0%
10.0%
0.0%
Tap
6427 ILL F06
4
X9314
RECOMMENDED OPERATING CONDITIONS
Temperature
Min.
Max.
Supply Voltage
Limits
Commercial
Industrial
Military
0°C
+70°C
+85°C
+125°C
X9314
5V ±10%
–40°C
–55°C
X9314-3
3V to 5.5V
6427 PGM T04.1
6427 PGM T03.1
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
Limits
(4)
Symbol
Parameter
Min.
Typ.
Max.
Units
Test Conditions
CS = V , U/D = V or V and
I
I
I
V
Active Current
1
3
mA
CC
SB
LI
CC
IL
IL
IH
INC = 0.4V/2.4V @ max. t
CYC
Standby Supply Current
500
µA
µA
V
CS = V – 0.3V, U/D and INC =
CC
V
SS
or V – 0.3V
CC
CS, INC, U/D Input
Leakage Current
±10
V
IN
= V to V
SS CC
V
V
CS, INC, U/D Input
HIGH Voltage
2
V
+ 1
CC
IH
CS, INC, U/D Input
–1
0.8
V
IL
LOW Voltage
R
Wiper Resistance
40
100
+5
Ω
V
Max. Wiper Current ±1mA
W
V
V
VH Terminal Voltage
VL Terminal Voltage
–5
–5
VH
+5
V
VL
(5)
C
IN
CS, INC, U/D Input
10
pF
V
CC
= 5V, V = V
,
IN
SS
Capacitance
T = 25°C, f = 1MHz
A
6427 PGM T05.3
STANDARD PARTS
Part Number
X9314W
Maximum Resistance
Wiper Increments
Minimum Resistance
40Ω
10KΩ
Log Taper
6427 PGM T08.1
Notes: (4) Typical values are for T = 25°C and nominal supply voltage.
A
(5) This parameter is periodically sampled and not 100% tested.
Test Circuit #1
Test Circuit #2
V
V
H
L
V
H
TEST POINT
V
TEST POINT
W
FORCE
V
W
CURRENT
V
L
6427 ILL F04
6427 ILL F05
5
X9314
A.C. CONDITIONS OF TEST
MODE SELECTION
Input Pulse Levels
0V to 3V
10ns
CS
INC
U/D
Mode
Wiper Up
Input Rise and Fall Times
Input Reference Levels
L
L
H
L
1.5V
Wiper Down
6427 PGM T05.1
H
X
L
X
X
X
Store Wiper Position
Standby
H
No Store, Return to
Standby
6427 PGM T06
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified)
Limits
(6)
Symbol
Parameter
CS to INC Setup
Min.
100
100
2.9
1
Typ.
Max.
Units
ns
t
t
t
t
t
t
t
t
t
t
t
Cl
INC HIGH to U/D Change
U/D to INC Setup
ns
lD
µs
DI
INC LOW Period
µs
lL
INC HIGH Period
1
µs
lH
INC Inactive to CS Inactive
CS Deselect Time
1
µs
lC
20
ms
µs
CPH
IW
CYC
INC to Vw Change
100
500
INC Cycle Time
4
µs
(7)
t
INC Input Rise and Fall Time
Power up to Wiper Stable
500
500
50
µs
R, F
(7)
µs
PU
t V
R
V Power-up Rate
CC
0.2
mV/µs
CC
6427 PGM T07.3
A.C. Timing
CS
t
CYC
t
t
t
t
t
CI
IL
IH
IC
CPH
90% 90%
10%
INC
U/D
t
t
t
t
ID
DI
F
R
t
IW
(8)
MI
V
W
6427 FHD F03
Notes: (6) Typical values are for T = 25°C and nominal supply voltage.
A
(7) This parameter is periodically sampled and not 100% tested.
(8) MI in the A.C. timing diagram refers to the minimum incremental change in the V output due to a change in the wiper position.
W
6
X9314
PACKAGING INFORMATION
8-LEAD MINIATURE SMALL OUTLINE GULL WING PACKAGE TYPE M
0.118 ± 0.002
(3.00 ± 0.05)
0.012 + 0.006 / -0.002
(0.30 + 0.15 / -0.05)
0.0256 (0.65) TYP
R 0.014 (0.36)
0.118 ± 0.002
(3.00 ± 0.05)
0.030 (0.76)
0.0216 (0.55)
7° TYP
0.036 (0.91)
0.032 (0.81)
0.040 ± 0.002
(1.02 ± 0.05)
0.008 (0.20)
0.004 (0.10)
0.150 (3.81)
0.007 (0.18)
0.005 (0.13)
REF.
0.193 (4.90)
REF.
NOTE:
1. ALL DIMENSIONS IN INCHES AND (MILLIMETERS)
3003 ILL 01
7
X9314
PACKAGING INFORMATION
8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P
0.430 (10.92)
0.360 (9.14)
0.260 (6.60)
0.240 (6.10)
PIN 1 INDEX
PIN 1
0.060 (1.52)
0.020 (0.51)
0.300
(7.62) REF.
HALF SHOULDER WIDTH ON
ALL END PINS OPTIONAL
0.145 (3.68)
0.128 (3.25)
SEATING
PLANE
0.025 (0.64)
0.015 (0.38)
0.150 (3.81)
0.125 (3.18)
0.065 (1.65)
0.045 (1.14)
0.110 (2.79)
0.090 (2.29)
0.020 (0.51)
0.016 (0.41)
0.325 (8.25)
0.300 (7.62)
0.015 (0.38)
MAX.
0°
15°
TYP. 0.010 (0.25)
NOTE:
1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
3926 FHD F01
8
X9314
PACKAGING INFORMATION
8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S
0.150 (3.80)
0.158 (4.00)
0.228 (5.80)
0.244 (6.20)
PIN 1 INDEX
PIN 1
0.014 (0.35)
0.019 (0.49)
0.188 (4.78)
0.197 (5.00)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.19)
0.010 (0.25)
0.050 (1.27)
0.010 (0.25)
0.050" TYPICAL
X 45°
0.020 (0.50)
0.050"
TYPICAL
0° – 8°
0.0075 (0.19)
0.010 (0.25)
0.250"
0.016 (0.410)
0.037 (0.937)
0.030"
TYPICAL
8 PLACES
FOOTPRINT
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
3926 FHD F22.1
9
X9314
ORDERING INFORMATION
2
X9314 E POT 10K Ohms, Log Taper
X9314W
X
X
X
V
CC
Range
Blank = V
= 5V ±10%
CC
3 = V
= 3V to 5.5V
CC
Temperature Range
Blank = 0°C to +70°C
I = –40°C to +85°C
M = –55°C to +125°C
Package
M = 8-Lead MSOP
P = 8-Lead Plastic DIP
S = 8-Lead SOIC
End to End Resistance
W = 10KΩ
Part Mark Convention
X9314W
X
X
P = 8-Lead Plastic DIP
Blank = 8-Lead SOIC
(Date Code)
Blank = 5V ±10%, 0°C to 70°C
I = 5V ±10%, -40°C to +85°C
D = 3V to 5.5V, 0°C to 70°C
E = 3V to 5.5V, -40°C to +85°C
LIMITED WARRANTY
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty,
express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement.
Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and
prices at any time and without notice.
Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are
implied.
U.S. PATENTS
Xicor products are covered by one or more of the following U.S. Patents: 4,263,664; 4,274,012; 4,300,212; 4,314,265; 4,326,134; 4,393,481; 4,404,475;
4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829, 482; 4,874, 967; 4,883, 976. Foreign patents and
additional patents pending.
LIFE RELATED POLICY
In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error
detection and correction, redundancy and back-up features to prevent such an occurence.
Xicor's products are not authorized for use in critical components in life support devices or systems.
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant
injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or effectiveness.
10
相关型号：
X9314WMI-3T5C7886
10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8, MSOP-8
RENESAS
X9314WMIT2
Digital Potentiometer, 1 Func, 10000ohm, Increment/decrement Control Interface, 32 Positions, PDSO8, MSOP-8
XICOR
X9314WMIZ-3
Single Digitally Controlled Potentiometer (XDCP™); MSOP8, SOIC8; Temp Range: See Datasheet
RENESAS
X9314WMIZ-3C7886
10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8, GREEN, MSOP-8
RENESAS
X9314WMIZ-3T1C7886
10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8, GREEN, MSOP-8
RENESAS
©2020 ICPDF网 联系我们和版权申明