Controlled Potentiometer. X9C303 Datasheet

X9C303 Datasheet PDF, Equivalent


Part Number

X9C303

Description

Logarithmic Digitally Controlled Potentiometer

Manufacture

Intersil Corporation

Total Page 10 Pages
PDF Download
Download X9C303 Datasheet


X9C303 Datasheet
X9C303
®
Logarithmic Digitally Controlled Potentiometer (XDCP™)
Data Sheet
January 24, 2007
FN8223.1
Terminal Voltage ±5V, 100 Taps, Log Taper
Description
The Intersil X9C303 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, a control section, and nonvolatile memory. The
wiper position is controlled by a three-wire interface.
The resistor array is composed of 99 resistive elements.
Between each element and at either end are tap points
accessible to the wiper terminal. 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.
The device can be used as a three-terminal potentio-meter
or as a two-terminal variable resistor in a wide variety of
applications ranging from control, to signal processing, to
parameter adjustment. Digitally-controlled potentiometers
provide three powerful application advantages; (1) the
variability and reliability of a solid-state potentiometer, (2) the
flexibility of computer-based digital controls, and (3) the use
of nonvolatile memory for potentiometer settings retention.
www.DataSheet4U.com
Block Diagram
U/D
INC
CS
7-Bit
Up/Down
Counter
7-Bit
Nonvolatile
Memory
Store and
Recall
VCC Control
VSS Circuitry
99
98
97
96
One
of
One-
Hundred
Decoder
2
1
0
Features
• Solid-state potentiometer
• Three-wire serial interface
• 100 wiper tap points
- Wiper position stored in nonvolatile memory and
recalled on power-up
• 99 resistive elements, log taper
- Temperature compensated
- End to end resistance, 32kΩ ±15%
- Terminal voltages, ±5V
• Low power CMOS
- VCC = 5V
- Active current, 3mA max.
- Standby current, 750µA max.
• High reliability
- Endurance, 100,000 data changes per bit
- Register data retention, 100 years
• Packages
- 8 Ld TSSOP
- 8 Ld SOIC
- 8 Ld PDIP
RH/VH
Transfer
Gates
Resistor
Array
RL/VL
RW/VW
1 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, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

X9C303 Datasheet
X9C303
Ordering Information
PART NUMBER
PART MARKING TEMPERATURE RANGE (°C)
PACKAGE
PKG. DWG. #
X9C303P
X9C303P
0 to +70
8 Ld PDIP
MDP0031
X9C303PI
X9C303P I
-40 to +85
8 Ld PDIP
MDP0031
X9C303PIZ (Note)
X9C303P ZI
-40 to +85
8 Ld PDIP (300 mil) (Pb-free)
MDP0031
X9C303PZ (Note)
X9C303P Z
0 to +70
8 Ld PDIP (300 mil) (Pb-free)
MDP0031
X9C303S8*
X9C303S
0 to +70
8 Ld SOIC (150 mil)
MDP0027
X9C303S8I*
X9C303S I
-40 to +85
8 Ld SOIC (150 mil)
MDP0027
X9C303S8IZ* (Note)
X9C303S ZI
-40 to +85
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
X9C303S8Z* (Note)
X9C303S Z
0 to +70
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
X9C303V8*
9C303
0 to +70
8 Ld TSSOP (4.4mm)
M8.173
X9C303V8I*
C303 I
-40 to +85
8 Ld TSSOP (4.4mm)
M8.173
X9C303V8IZ* (Note)
C303 IZ
-40 to +85
8 Ld TSSOP (4.4mm) (Pb-free)
M8.173
X9C303V8Z* (Note)
9CC303 Z
0 to +70
8 Ld TSSOP (4.4mm) (Pb-free)
M8.173
X9C303S8I-2.7
X9C303S G
-40 to +85
8 Ld SOIC (150 mil)
MDP0027
X9C303S8IZ-2.7 (Note) X9C303S ZG
-40 to +85
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
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.
*Add "T1" suffix for tape and reel.
Pin Descriptions
VH and VL
The high (VH) and low (VL) terminals of the device 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
VL and VH 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.
VW
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.
Up/Down (U/D)
The U/D input controls the direction of the wiper movement
and whether the counter is incriminated or decremented.
Increment (INC)
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.
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 device will be placed in
the low power standby mode until the device is selected
once again.
Pinout
X9C303
(8 LD SOIC, 8 LD TSSOP, 8 LD PDIP)
TOP VIEW
(CS) INC
(VCC) U/D
(INC) VH
(U/D) VSS
1
2
X9C303
3
4
8
7
6
5
VCC (VL)
CS (VW)
VL (VSS)
VW (VH)
Pin Names
SYMBOL
VH
VW
VL
VSS
VCC
U/D
INC
CS
NC
DESCRIPTION
High Terminal (Potentiometer)
Wiper Terminal (Potentiometer)
Low Terminal (Potentiometer)
Ground
Supply Voltage
Up/Down Control Input
Increment Control Input
Chip Select Control Input
No Connection
2 FN8223.1
January 24, 2007


Features Datasheet pdf ® X9C303 Logarithmic Digitally Control led Potentiometer (XDCP™) Data Sheet January 24, 2007 FN8223.1 Terminal Vol tage ±5V, 100 Taps, Log Taper Descript ion The Intersil X9C303 is a digitally controlled potentiometer (XDCP). The de vice consists of a resistor array, wipe r switches, a control section, and nonv olatile memory. The wiper position is c ontrolled by a three-wire interface. Th e resistor array is composed of 99 resi stive elements. Between each element an d at either end are tap points accessib le to the wiper terminal. The position of the wiper element is controlled by t he CS, U/D, and INC inputs. The positio n of the wiper can be stored in nonvola tile memory and then be recalled upon a subsequent power-up operation. The dev ice can be used as a three-terminal pot entio-meter or as a two-terminal variab le resistor in a wide variety of applic ations ranging from control, to signal processing, to parameter adjustment. Di gitally-controlled potentiometers provide three powerful applicatio.
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