X9316ZSM3 [XICOR]
E 2 POT⑩ Nonvolatile Digital Potentiometer; Ë 2 POT⑩非易失性数字电位器
| 型号： | X9316ZSM3 |
| 厂家： | 
XICOR INC. |
| 描述： | E 2 POT⑩ Nonvolatile Digital Potentiometer |
| 文件： | 总12页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low Noise, Low Power, 32 Taps
X9316
E2POT™ Nonvolatile Digital Potentiometer
FEATURES
DESCRIPTION
• Low Micropower CMOS
The Xicor X9316 is a solid state “micropower” nonvolatile
potentiometer and is ideal for digitally controlled resis-
tance trimming in battery-powered systems.
—V = 3V to 5.5V
CC
—Active Current, 50µA (Increment) Max
—Standby Current, 400µA (Store) Max
• Low Noise
The X9316 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 subse-
quent power-up operation.
• 31 Resistive Elements
—Temperature Compensated
—± 20% End to End Resistance Range
—–5V to +5V
• 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
• 100Year Wiper Position Data Retention
• X9316Z = 1KΩ
The resolution of the X9316 is equal to the maximum
resistance value divided by 31. As an example, for the
X9316W (10KΩ) each tap point represents 323Ω.
All Xicor nonvolatile memories are designed and tested
for applications requiring extended endurance and data
retention.
• X9316W = 10KΩ
• Packages
—14-Lead PDIP
—14-Lead SOIC
FUNCTIONAL DIAGRAM
U/D
INC
5-BIT
UP/DOWN
COUNTER
CMOS SWITCH
V
H
CS
ONE
OF
THIRTY-
TWO
5-BIT
NONVOLATILE
MEMORY
RESISTOR
ARRAY
WIPER
POSITION
DECODER
STORE AND
RECALL
CONTROL
CIRCUITRY
V
V
CC
SS
V
L
+
V
V
W
V–
7000 FRM F01
E2POT™ is a trademark of Xicor, Inc.
Xicor, Inc. 1994, 1995, 1996 Patents Pending
7000-1.5 7/16/97 T6/C0/D6 SH
Characteristics subject to change without notice
1
X9316
PIN DESCRIPTIONS
PIN CONFIGURATION
V and V
H
L
14-LEAD DIP/SOIC
The high (V ) and low (V ) terminals of the X9316 are
H
L
NC
V
NC
INC
U/D
1
2
3
4
5
6
7
14
13
12
11
10
9
equivalent to the fixed terminals of a mechanical potenti-
CC
ometer. The minimum voltage is V and the maximum is
–
V . It should be noted that the terminology of V and V
CS
+
L
H
references the relative position of the terminal in relation
to wiper movement direction selected by the U/D input
and not the voltage potential on the terminal.
V
V
X9316
H
L
V
V
SS
W
V+
V
–
8
NC
NC
V
W
V is the wiper terminal, equivalent to the movable termi-
7000 FRM 02
W
nal 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 100Ω.
PIN NAMES
Symbol
Description
Up/Down (U/D)
V
The U/D input controls the direction of the wiper move-
ment and whether the counter is incremented or decre-
mented.
High Terminal
Wiper Terminal
Low Terminal
Ground
H
V
W
V
L
Increment (INC)
V
SS
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
CC
Supply Voltage
U/D
INC
CS
Up/Down Input
Increment Input
Chip Select (CS)
Chip Select Input
Positive Analog Voltage
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 X9316
will be placed in the low power standby mode until the
device is selected once again.
V
+
V
Negative Analog Voltage
–
7000 FRM T01.1
V , V (Analog positive/negative power supply)
+
–
The V and V pins supply an external voltage to the
+
–
wiper position decoder.
2
X9316
DEVICE OPERATION
Operation Notes
The system may select the X9316, move the wiper and
deselect the device without having to store the latest
wiper position in nonvolatile memory. The wiper move-
ment is performed as described above; once the new
position is reached, the system would the keep 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.
There are three sections of the X9316: 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 trans-
fers the potential at that point to the wiper.
This would allow the system to always power-up to a pre-
set value stored in nonvolatile memory; then during sys-
tem operation minor adjustments could be made. The
adjustments might be based on user preference, system
parameter changes due to temperature drift, etc...
The INC, U/D and CS inputs control the movement of the
wiper along the resistor array. With CS set LOW the
X9316 is selected and enabled to respond to the 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 seven 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 X9316
and then move the wiper up and down until the proper
trim is attained.
T
/R
IW TOTAL
The electronic switches on the X9316 operate in a “make
before break” mode when the wiper changes tap posi-
tions. If the wiper is moved several positions multiple taps
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.
are connected to the wiper for t (INC to V change).
IW
W
The R
value for the device can temporarily be
TOTAL
reduced by a significant amount if the wiper is moved
several positions.
The value of the counter is stored in nonvolatile memory
whenever CS transistions HIGH while the INC input is
also HIGH.
SYMBOL TABLE
When the X9316 is powered-down, the last counter posi-
tion 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.
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
X9316
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 specification is
not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect device reliability.
Voltage on CS, INC, U/D and V
CC
with Respect to V ............................ –1V to +7V
SS
Voltage on V and V Referenced to V
H
L
SS
∆V = |V –V |
H
L
X9316Z..............................................................4V
X9316W...........................................................10V
Lead Temperature (Soldering 10 seconds) .......300°C
Wiper Current..................................................... ±1mA
Temperature Coefficient
(–40°C to +85°C) ........................+300 ppm/°C Typical
Ratiometric Temperature Coefficient ............ ±20 ppm
ANALOG CHARACTERISTICS
Electrical Characteristics
Wiper Adjustability
Unlimited Wiper Adjustment (Non-Store operation)
Wiper Position Store Operations.............. 100,000
End-to-End Resistance Tolerance .................... ±20%
Power Rating at 25°C
Physical Characteristics
X9316Z........................................................16mW
X9316W.......................................................10mW
Wiper Current ........................................... ±1mA Max.
Typical Wiper Resistance ......................100Ω at 1mA
Typical Noise ............................ < –140dB√Hz Ref: 1V
Marking Includes
Manufacturer’s Trademark
Resistance Value or Code
Date Code
Resolution
Resistance .............................................................3%
Linearity
(1)
(2)
(2)
Absolute Linearity .................................... ±1.0 Ml
(3)
Relative Linearity
.................................... ±0.2 Ml
Test Circuit #1
Test Circuit #2
V
V
H
H
TEST POINT
TEST POINT
V
W
V
W
FORCE
CURRENT
V
V
L
L
7000 FRM F04
7000 FRM 03
Notes: (1) Absolute Linearity is utilized to determine actual wiper voltage versus expected voltage
= (V (actual) – V (expected)) = ±1 Ml Maximum.
w(n)
w(n)
(2) 1 Ml = Minimum Increment = R
/31.
TOT
(3) Relative Linearity is a measure of the error in step size between taps = V
– [V
+ Ml] = +0.2 Ml.
w(n)
W(n+1)
4
X9316
RECOMMENDED OPERATING CONDITIONS
Temperature
Commercial
Industrial
Min.
0°C
Max.
+70°C
+85°C
Supply Voltage
Limits
X9316
5V ±10%
7000 FRM T03.1
–40°C
7000 FRM T02
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
Limits
(4)
Typ.
Symbol
Parameter
Min.
Max.
Units
Test Conditions
ICC
VCC Active Current (Increment)
50
µA
CS = V , U/D = VIL or VIH and
IL
INC = 0.4V/2.4V @ max. tCYC
VCC Active Current (Store)
Standby Supply Current
400
1
µA
µA
ISB
CS = VCC – 0.3V, U/D and
INC = VSS or VCC – 0.3V
(5)
+
IV+
400
400
µA
µA
CS = VIL, U/D = VIL or VIH and
INC = 0.4V/2.4V @ max. tCYC
V Supply Current
(5)
–
IV–
CS = VIL, U/D = VIL or VIH and
INC = 0.4V/2.4V @ max. tCYC
V Supply Current
ILI
CS, INC, U/D Input Leakage
Current
±10
VCC + 1
0.8
µA
V
VIN = VSS to VCC
VIH
VIL
CS, INC, U/D Input HIGH
Voltage
2
CS, INC, U/D Input LOW
Voltage
–1
V
RW
Wiper Resistence
100
200
V+
Ω
V
V
V
V
Max. Wiper Current ±1mA
VVH
VH Terminal Voltage
VL Terminal Voltage
Analog Positive Power Supply
V–
V–
V
VL
V+
V+
V–
VCC
–VCC
VCC
0
Analog Negative Power
Supply
(5)
CIN
CS, INC, U/D Input
Capacitance
10
pF
VCC = 5V, VIN = VSS, TA = 25°C
7000 FRM T04.1
STANDARD PARTS
Part Number
X9316Z
Maximum Resistance
Wiper Increments
32.3Ω
Minimum Resistance
1KΩ
100Ω
X9316W
10KΩ
323Ω
100Ω
7000 FRM T05
Notes: (4) Typical values are for T = 25°C and nominal supply voltage.
A
(5) This parameter is periodically sampled and not 100% tested.
5
X9316
A.C. CONDITIONS OF TEST
MODE SELECTION
Input Pulse Levels
0V to 3V
10ns
CS
L
INC
U/D
H
Mode
Input Rise and Fall Times
Input Reference Levels
Wiper Up
1.5V
L
L
Wiper Down
7000 FRM T06
H
X
L
X
Store Wiper Position
Standby
H
X
X
No Store, Return to Standby
7000 FRM T07
A.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified)
Limits
(6)
Typ.
Symbol
tCl
Parameter
Min.
100
100
2.9
1
Max.
Units
ns
CS to INC Setup
tlD
INC HIGH to U/D Change
U/D to INC Setup
ns
tDI
µs
tlL
INC LOW Period
µs
tlH
INC HIGH Period
1
µs
tlC
INC Inactive to CS Inactive
CS Deselect Time (STORE)
CS Deselect Time (NO STORE)
INC to Vw Change
1
µs
tCPH1
tCPH2
tIW
10
ms
ns
100
1
5
5
µs
tCYC
INC Cycle Time
4
µs
(7)
tR
,
t
CS, INC Input Rise and Fall Time
Power up to Wiper Stable
VCC Power-up Rate
500
5
µs
F
(7)
tPU
tR VCC
tWR
µs
(7)
0.2
50
10
mV/µs
Store Cycle
ms
7000 FRM T08.1
A.C. Timing
CS
t
CYC
t
t
t
t
t
CPH
CI
IL
IH
IC
90% 90%
10%
INC
U/D
t
t
t
t
R
ID
DI
F
t
IW
(8)
MI
V
W
7000 FRM 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
X9316
TYPICAL NOISE
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150 160 170 180 190 200
Frequency (KHz)
TYPICAL RTOTAL vs. TEMPERATURE
10000
9800
9600
9400
9200
9000
8800
8600
8400
8200
8000
-55
-45
-35 -25 -15 -5
5
35
45
C°
95 105 115 125
15
25
55
65
75
85
Temperature
7
X9316
TYPICAL TOTAL RESISTANCE TEMPERATURE COEFFICIENT
0
-50
-100
-150
PPM
-200
-250
-300
-350
-55 -45 -35 -25 -15
-5
5
15
25
35
45
55
65
75
85
95 105 115 125 °C
Temperature
TYPICAL WIPER RESISTANCE
800
700
600
500
400
300
200
100
0
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
Tap
8
X9316
TYPICAL ABSOLUTE % ERROR PER TAP POSITION
40.0%
30.0%
20.0%
10.0%
0.0%
-10.0%
-20.0%
-30.0%
-40.0%
0
3
6
9
12
15
18
21
24
27
30
Tap
TYPICAL RELATIVE % ERROR PER TAP POSITION
20.0%
15.0%
10.0%
5.0%
0.0%
-5.0%
-10.0%
-15.0%
-20.0%
0
3
6
9
12
15
18
21
24
27
30
Tap
9
X9316
PACKAGING INFORMATION
14-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P
0.720 (18.29)
0.640 (16.26)
0.260 (6.60)
0.240 (6.10)
PIN 1 INDEX
PIN 1
0.060 (1.52)
0.050 (1.27)
0.600 (15.24)
REF.
HALF SHOULDER WIDTH ON
ALL END PINS OPTIONAL
0.145 (3.68)
0.128 (0.51)
SEATING
PLANE
0.025 (0.64)
0.015 (0.38)
0.150 (3.81)
0.125 (3.18)
0.110 (2.79)
0.090 (2.29)
0.065 (1.65)
0.045 (1.14)
0.020 (0.51)
0.016 (0.41)
0.325 (8.26)
0.300 (7.62)
0.015 (0.38)
MAX.
0°
TYP. 0.010 (0.25)
15°
NOTE:
1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
3926 FHD F46
10
X9316
PACKAGING INFORMATION
14-LEAD PLASTIC SMALL OUTLINE GULLWING PACKAGETYPE 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)
0.020 (0.51)
0.336 (8.55)
0.345 (8.75)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.10)
0.010 (0.25)
0.050 (1.27)
0.050" Typical
0.010 (0.25)
0.020 (0.50)
X 45°
0.050" Typical
0° – 8°
0.250"
0.0075 (0.19)
0.010 (0.25)
0.016 (0.410)
0.037 (0.937)
0.030"Typical
14 Places
FOOTPRINT
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
7000 FRM 05
11
X9316
ORDERING INFORMATION
X9316X
X
X
X
V
Range
CC
Blank = 4.5V to 5.5V
3 = 3V to 5.5V
Temperature Range
Blank = Commercial = 0°C to +70°C
I = Industrial = –40°C to +85°C
M = Military = –55°C to +125°C
Package
P = 14-Lead Plastic DIP
S = 14-Lead SOIC
End to End Resistance
Z = 1KΩ
W = 10KΩ
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.
12
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