X9314WM-3 [INTERSIL]
Terminal Voltage +-5V, 32 Taps, Log Taper; 端电压+ -5V ， 32丝锥，锥登录
| 型号： | X9314WM-3 |
| 厂家： | 
Intersil |
| 描述： | Terminal Voltage +-5V, 32 Taps, Log Taper |
| 文件： | 总9页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
X9314
®
Terminal Voltages ±5V, 32 Taps, Log Taper
Data Sheet
September 15, 2005
FN8178.1
Single Digitally Controlled Potentiometer
(XDCP™)
The Intersil X9314 is a solid state nonvolatile potentiometer and
is ideal for digitally controlled resistance trimming.
Features
• Solid State Potentiometer
• 32 Taps
• 10kΩ End to End Resistance
• Three-Wire Up/Down Serial Interface
• Wiper Resistance, 40Ω Typical
The X9314 is a resistor array composed of 31 resistive
elements. Between each element and at either end are tap
points accessible to the wiper element. The position of the
wiper element is controlled by the CS, U/D, and INC inputs.
The position of the wiper can be stored in nonvolatile
memory and then be recalled upon a subsequent power-up
operation.
• Nonvolatile Storage and Recall on Power-up of Wiper
Position Standby Current < 500µA Max (Total Package)
• V
CC
= 3V to 5.5V Operation
• 100 Year Data Retention
The XDCP can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including control, parameter adjustments, and
signal processing.
• Offered in MSOP, SOIC Packages
• Pb-Free Plus Anneal Available (RoHS Compliant)
Block Diagram
U/D
31
30
29
28
5-Bit
Up/Down
Counter
V /R
H
H
INC
CS
5-Bit
Nonvolatile
Memory
One
of
Thirty-Two
Decoder
Transfer
Gates
Resistor
Array
2
1
0
Store and
Recall
Control
Circuitry
V
V /R
CC
L
L
V
SS
V
/R
W
W
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1
X9314
Ordering Information
R
TEMP RANGE
(°C)
TOTAL
PART NUMBER
X9314WM*
PART MARKING
V
RANGE
(kΩ)
PACKAGE
8 Ld MSOP
CC
5V ±10%
314W
14WI
10
0 to +70
0 to +70
X9314WMZ (Note)
X9314WMI*
8 Ld MSOP (Pb-free)
8 Ld MSOP
-40 to +85
-40 to +85
0 to +70
X9314WMIZ (Note)
X9314WP
8 Ld MSOP (Pb-free)
8 Ld PDIP
X9314WP
X9314WP I
X9314W
X9314WPI
-40 to +85
0 to +70
8 Ld PDIP
X9314WS*
8 Ld SOIC
X9314WSI*
X9314W I
-40 to +85
-40 to +85
0 to +70
8 Ld SOIC
X9314WSIZ (Note)
X9314WSZ* (Note)
X9314WM-3*
8 Ld SOIC (Pb-free)
8 Ld SOIC (Pb-free)
8 Ld MSOP
X9314W Z
14WD
3V to 5.5V
0 to +70
X9314WMZ-3 (Note)
X9314WMI-3*
0 to +70
8 Ld MSOP (Pb-free)
8 Ld MSOP
AAY
-40 to +85
-40 to +85
0 to +70
X9314WMIZ-3 (Note)
X9314WP-3
8 Ld MSOP (Pb-free)
8 Ld PDIP
X9314WP D
X9314W D
X9314WS-3*
0 to +70
8 Ld SOIC
X9314WSZ-3 (Note)
0 to +70
8 Ld SOIC (Pb-free)
*Add "T1" suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
FN8178.1
2
September 15, 2005
X9314
Pin Descriptions
Pin Configuration
V /R and V /R
H
H
L
L
8-Lead DIP/SOIC
The high (V /R ) and low (V /R ) terminals of the X9314
H
H
L
L
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 of
INC
U/D
1
8
7
CC
2
3
4
CS
X9314
V /R
L
V /R
6
5
L
H
H
V /R and V /R references the relative position of the
L
L
H
H
V
V /R
W W
SS
terminal in relation to wiper movement direction selected by
the U/D input and not the voltage potential on the terminal.
8-Lead MSOP
V /R
W
W
V /R
U/D
INC
H
H
1
8
V /R is the wiper terminal, equivalent to the movable
W
W
V
2
3
4
7
6
5
SS
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
CC
V
/R
W
W
CS
V /R
L
L
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the counter is incremented or decremented.
Pin Names
Increment (INC)
SYMBOL
DESCRIPTION
High Terminal
Wiper Terminal
Low Terminal
Ground
The INC input is negative-edge triggered. Toggling INC will
move the wiper and either increment or decrement the
counter in the direction indicated by the logic level on the
U/D input.
V /R
H
H
W
L
V
/R
W
V /R
L
Chip Select (CS)
V
SS
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.
V
Supply Voltage
Up/Down Input
Increment Input
Chip Select Input
CC
U/D
INC
CS
Typical Attenuation Characteristics (dB)
0
-20
-40
-43.5
-60
0
31
28
24
20
16
8
4
12
Tap Position
FN8178.1
3
September 15, 2005
X9314
t
/R
Principles of Operation
IW TOTAL
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 multiple taps are
connected to the wiper for t (INC to V change). The
There are three sections of the X9314: the input control,
counter and decode section; the nonvolatile memory; 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.
IW
W
R
value for the device can temporarily be reduced by
TOTAL
a significant amount if the wiper is moved several positions.
SYMBOL TABLE
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
The INC, U/D and CS inputs control the movement of the
wiper along the resistor array. With CS set LOW the X9314
is selected and enabled to respond to the
May change
from Low to
High
Will change
from Low to
High
May change
from High to
Low
Will change
from High to
Low
U/D and INC inputs. HIGH to LOW transitions on INC 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.
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
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 value of the counter is stored in nonvolatile memory
whenever CS transistions HIGH while the INC input is also
HIGH.
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 memory are recalled
and the counter is reset to the value last stored.
Operation Notes
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...
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.
FN8178.1
September 15, 2005
4
X9314
Absolute Maximum Ratings
Temperature under bias. . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on CS, INC, U/D, and
Recommended Operating Conditions
Temperature (Commercial) . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Temperature (Industrial). . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage (V ) Limits
CC
V
with respect to V
. . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
L
X9314. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ± 10%
X9314-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 5.5V
CC
SS
L
Voltage on V /R and V /R referenced
H
H
to V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +8V
SS
∆V = |V /R - V /R | . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10V
H
H
L L
Lead temperature (soldering 10 seconds) . . . . . . . . . . . . . . . .300°C
Wiper current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1mA
I
(10 seconds). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±8.8mA
W
CAUTION: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only; the 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.
Potentiometer Characteristics (Over recommended operating conditions unless otherwise stated.)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS/NOTES
MIN
TYP
MAX
±20
+5
UNITS
%
R
End to End Resistance Tolerance
TOTAL
V /R Terminal Voltage
-5
-5
V
H
H
V
V /R Terminal Voltage
+5
V
VL/RL
L
L
Power Rating
Wiper Resistance
Wiper Current
Noise
at 25°C
10
mW
Ω
R
I
= ±1mA, V = 5V
CC
40
100
±4.4
W
W
I
mA
dBV
W
Ref: 1kHz
log (R
-120
Relative variation. Error in step size
between taps.
) - log R
)
w(n - 1)
0.07-
0.003
0.07 + 0.003
w(n)
R
Temperature Coefficient
for -40°C to +85°C
See Circuit #3
±600
ppm/°C
ppm/°C
TOTAL
Ratiometric Temperature Coefficient
Potentiometer Capacitance
±20
pF
C /C /C
10/10/25
H
L
W
NOTE:
1. This parameter is periodically sampled and not 100% tested.
Power-up and Down Requirement
The are no restrictions on the sequencing of V
and the
CC
voltages applied to the potentiometer pins during power-up
or power-down conditions. During power-up, the data sheet
parameters for the DCP do not fully apply until 1 millisecond
after V
reaches its final value. The V ramp rate spec is
CC
CC
always in effect.
FN8178.1
September 15, 2005
5
X9314
DC Electrical Specifications (Over recommended operating conditions unless otherwise specified.)
LIMITS
(2)
SYMBOL
PARAMETER
Active Current
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I
V
CS = V , U/D = V or V and
1
3
mA
CC
CC
IL IL IH
INC = 0.4V/2.4V @ max. t
CYC
I
Standby Supply Current
CS = V
CC
- 0.3V, U/D and INC = V or
500
±10
µA
SB
CC
- 0.3V
SS
V
I
CS, INC, U/D Input Leakage Current
CS, INC, U/D Input HIGH Voltage
CS, INC, U/D Input LOW Voltage
CS, INC, U/D Input Capacitance
V
= V to V
SS CC
µA
V
LI
IN
V
2
V
+ 1
IH
CC
0.8
10
V
-1
V
IL
(3)
C
V
= 5V, V = V , T = 25°C, f = 1MHz
pF
IN
CC
IN
SS
A
Standard Parts
PART NUMBER
MAXIMUM RESISTANCE
WIPER INCREMENTS
MINIMUM RESISTANCE
X9314W
10kΩ
Log Taper
40Ω
NOTES:
2. Typical values are for T = 25°C and nominal supply voltage.
A
3. This parameter is periodically sampled and not 100% tested.
Test Circuit #1
Test Circuit #2
Circuit #3 SPICE Macromodel
Macro Model
V /R
H
H
V /R
H
H
R
TOTAL
Test Point
R
R
L
H
C
L
C
H
C
Test Point
/R
W
V
/R
W
W
10pF
V
W
W
Force
Current
10pF
25pF
V /R
L
V /R
L
L
L
R
W
A.C. Conditions of Test
Mode Selection
INPUT PULSE LEVELS
Input rise and fall times
Input reference levels
0V to 3V
10ns
CS
INC
U/D
MODE
L
H
Wiper up
Wiper down
1.5V
L
L
H
X
L
X
Store wiper position
Standby
H
X
X
No store, return to standby
FN8178.1
September 15, 2005
6
X9314
AC Electrical Specifications (Over recommended operating conditions unless otherwise specified)
LIMITS
(4)
SYMBOL
PARAMETER
MIN
100
100
2.9
1
TYP
MAX
UNITS
ns
t
CS to INC Setup
Cl
lD
DI
t
INC HIGH to U/D Change
U/D to INC Setup
ns
t
µs
t
INC LOW Period
µs
lL
lH
lC
t
t
INC HIGH Period
1
µs
INC Inactive to CS Inactive
CS Deselect Time
1
µs
t
t
20
ms
µs
CPH
t
INC to V Change
W
100
500
IW
INC Cycle Time
4
µs
CYC
(5)
t , t
INC Input Rise and Fall Time
Power-up to Wiper Stable
500
500
50
µs
R
F
(5)
t
µs
PU
t
V
V Power-up Rate
CC
0.2
mV/µs
R
CC
A.C. Timing
CS
t
CYC
t
IC
t
t
t
CPH
IL
IH
t
CI
90%
90%
10%
INC
U/D
t
t
DI
ID
t
t
R
F
t
IW
(6)
MI
V
W
NOTES:
4. Typical values are for T = 25°C and nominal supply voltage.
A
5. This parameter is periodically sampled and not 100% tested.
6. 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
FN8178.1
September 15, 2005
7
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
0.0256 (0.65) Typ.
(0.30 + 0.15 / -0.05)
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)
0.0256" Typical
0.025"
Typical
0.150 (3.81)
0.007 (0.18)
0.005 (0.13)
Ref.
0.193 (4.90)
Ref.
0.220"
0.020"
Typical
8 Places
FOOTPRINT
NOTE:
1. ALL DIMENSIONS IN INCHES AND (MILLIMETERS)
FN8178.1
8
September 15, 2005
X9314
Packaging Information
8-Lead Plastic Small Outline Gull Wing Package Type S
0.150 (3.80) 0.228 (5.80)
0.158 (4.00) 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)
0.020 (0.50)
0.050"Typical
X 45°
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)
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN8178.1
9
September 15, 2005
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