X95840 Potentiometers Datasheet

X95840 Datasheet, PDF, Equivalent


Part Number

X95840

Description

Quad Digital Controlled Potentiometers

Manufacture

Intersil Corporation

Total Page 13 Pages
Datasheet
Download X95840 Datasheet


X95840
X95840
®
Quad Digital Controlled Potentiometers (XDCP™)
Data Sheet
July 5, 2006
FN8213.2
Low Noise/Low Power/I2C® Bus/256 Taps
The X95840 integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
circuit.
The digitally controlled potentiometers are implemented with
a combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I2C bus interface. Each potentiometer has an associated
volatile Wiper Register (WR) and a non-volatile Initial Value
Register (IVR), that can be directly written to and read by the
user. The contents of the WR controls the position of the
wiper. At power up the device recalls the contents of the four
DCP’s IVR to the corresponding WRs.
The DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Ordering Information
PART NUMBER
PART
RESISTANCE
MARKING
OPTION
PACKAGE
www.DataSheet4U.comX95840WV20I-2.7* X95840WV G
X95840WV20IZ-2.7* X95840WV Z G
(Note)
10kΩ
10kΩ
20 Ld TSSOP
20 Ld TSSOP
(Pb-free)
X95840UV20I-2.7* X95840UV G
50kΩ 20 Ld TSSOP
X95840UV20IZ-2.7* X95840UV Z G
(Note)
50kΩ
20 Ld TSSOP
(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.
Features
• Four Potentiometers in One Package
• 256 Resistor Taps-0.4% Resolution
• I2C Serial Interface
- Three address pins, up to eight devices/bus
• Wiper Resistance: 70Ω Typical @ 3.3V
• Non-Volatile Storage of Wiper Position
• Standby Current < 5µA Max
• Power Supply: 2.7V to 5.5V
• 50kΩ, 10kΩ Total Resistance
• High Reliability
- Endurance: 150,000 data changes per bit per register
- Register data retention: 50 years @ T 75°C
• 20 Ld TSSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)
Pinouts
X95840
(20 LD TSSOP)
TOP VIEW
RH3
RL3
RW3
A2
SCL
SDA
GND
RW2
RL2
RH2
1
2
3
4
5
6
7
8
9
10
20 RW0
19 RL0
18 RH0
17 WP
16 VCC
15 A1
14 A0
13 RH1
12 RL1
11 RW1
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. 2005-2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

X95840
Block Diagram
X95840
VCC
SDA
SCL
I2C
INTERFACE
POWER-UP,
INTERFACE,
CONTROL AND
StAtus LOGIC
A2
A1
A0 NON-VOLATILE
REGISTERS
WR3
WR2
WR1
WR0
DCP3
DCP2
DCP1
DCP0
RH3
RW3
RL3
RH2
RW2
RL2
RH1
RW1
RL1
RH0
RW0
RL0
Pin Descriptions
TSSOP PIN
SYMBOL
1 RH3
2 RL3
3 RW3
4 A2
5 SCL
6 SDA
7 GND
8 RW2
9 RL2
10 RH2
11 RW1
12 RL1
13 RH1
14 A0
15 A1
16 VCC
17 WP
18 RH0
19 RL0
20 RW0
WP GND
DESCRIPTION
“High” terminal of DCP3
“Low” terminal of DCP3
“Wiper” terminal of DCP3
Device address for the I2C interface
I2C interface clock
Serial data I/O for the I2C interface
Device ground pin
“Wiper” terminal of DCP2
“Low” terminal of DCP2
“High” terminal of DCP2
“Wiper” terminal of DCP1
“Low” terminal of DCP1
“High” terminal of DCP1
Device address for the I2C interface
Device address for the I2C interface
Power supply pin
Hardware write protection pin. Active low. Prevents any “Write” operation of the I2C interface.
“High” terminal of DCP0
“Low” terminal of DCP0
“Wiper” terminal of DCP0
2 FN8213.2
July 5, 2006


Features ® X95840 Quad Digital Controlled Poten tiometers (XDCP™) Data Sheet July 5, 2006 FN8213.2 Low Noise/Low Power/I2C Bus/256 Taps The X95840 integrates fo ur digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled poten tiometers are implemented with a combin ation of resistor elements and CMOS swi tches. The position of the wipers are c ontrolled by the user through the I2C b us interface. Each potentiometer has an associated volatile Wiper Register (WR ) and a non-volatile Initial Value Regi ster (IVR), that can be directly writte n to and read by the user. The contents of the WR controls the position of the wiper. At power up the device recalls the contents of the four DCP’s IVR to the corresponding WRs. The DCPs can be used as three-terminal potentiometers or as two-terminal variable resistors i n a wide variety of applications includ ing control, parameter adjustments, and signal processing. Features • Four Potentiometers in One Package • .
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