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Número de pieza | X9314 | |
Descripción | E2POT Nonvolatile Digital Potentiometer | |
Fabricantes | Xicor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de X9314 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! APPLICATION NOTES
AVA I L A B L E
AN42 • AN44–50 • AN52 • AN53 • AN71 • AN73
TXe9r3m14inal Voltage ±5V, 32 Taps, Log Taper
X9314
E2POT™ Nonvolatile Digital Potentiometer
FEATURES
• Low Power CMOS
—VCC = 3V to 5.5V
—Active Current, 3mA Max
—Standby Current, 500µA Max
• 31 Resistive Elements
—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
• Packages
—8-Lead MSOP
—8-Lead PDIP
—8-Lead SOIC
DESCRIPTION
The Xicor X9314 is a solid state nonvolatile potentiom-
eter and is ideal for digitally controlled resistance trim-
ming.
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 nonvola-
tile memory and then be recalled upon a subsequent
power-up operation.
All Xicor nonvolatile Digitally Controlled Potentiometers
are designed and tested for applications requiring ex-
tended endurance and data retention.
FUNCTIONAL DIAGRAM
U/D 5-BIT
INC UP/DOWN
CS COUNTER
5-BIT
NONVOLATILE
MEMORY
VCC
GND
STORE AND
RECALL
CONTROL
CIRCUITRY
E2POT™ is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
6427-1.7 6/12/96 T3/C1/D8 NS
31
30
29
ONE 28
OF
THIRTY-
TWO
DECODER
2
1
0
VH
TRANSFER
GATES
RESISTOR
ARRAY
VL
VW
6427 FHD F01
1 Characteristics subject to change without notice
1 page X9314
RECOMMENDED OPERATING CONDITIONS
Temperature
Min.
Max.
Commercial
Industrial
Military
0°C
–40°C
–55°C
+70°C
+85°C
+125°C
6427 PGM T03.1
Supply Voltage
X9314
X9314-3
Limits
5V ±10%
3V to 5.5V
6427 PGM T04.1
D.C. OPERATING CHARACTERISTICS (Over recommended operating conditions unless otherwise specified.)
Symbol
Parameter
ICC VCC Active Current
ISB Standby Supply Current
ILI
VIH
VIL
RW
VVH
VVL
CIN(5)
CS, INC, U/D Input
Leakage Current
CS, INC, U/D Input
HIGH Voltage
CS, INC, U/D Input
LOW Voltage
Wiper Resistance
VH Terminal Voltage
VL Terminal Voltage
CS, INC, U/D Input
Capacitance
Min.
Limits
Typ.(4)
1
Max.
3
500
±10
Units
mA
µA
µA
Test Conditions
CS = VIL, U/D = VIL or VIH and
INC = 0.4V/2.4V @ max. tCYC
CS = VCC – 0.3V, U/D and INC =
VSS or VCC – 0.3V
VIN = VSS to VCC
2 VCC + 1 V
–1 0.8 V
40
–5
–5
100 Ω Max. Wiper Current ±1mA
+5 V
+5 V
10 pF VCC = 5V, VIN = VSS,
TA = 25°C, f = 1MHz
6427 PGM T05.3
STANDARD PARTS
Part Number
X9314W
Maximum Resistance
10KΩ
Wiper Increments
Log Taper
Notes: (4) Typical values are for TA = 25°C and nominal supply voltage.
(5) This parameter is periodically sampled and not 100% tested.
Minimum Resistance
40Ω
6427 PGM T08.1
Test Circuit #1
Test Circuit #2
VH
TEST POINT
VW
VL
6427 ILL F04
VH
TEST POINT
VW
FORCE
VL CURRENT
6427 ILL F05
5
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet X9314.PDF ] |
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