ISL22449WFV14Z-TK Intersil, ISL22449WFV14Z-TK Datasheet

IC POT DGTL 128TP LN LP 14-TSSOP

ISL22449WFV14Z-TK

Manufacturer Part Number
ISL22449WFV14Z-TK
Description
IC POT DGTL 128TP LN LP 14-TSSOP
Manufacturer
Intersil
Series
XDCP™r
Datasheet

Specifications of ISL22449WFV14Z-TK

Taps
128
Resistance (ohms)
10K
Number Of Circuits
4
Temperature Coefficient
50 ppm/°C Typical
Memory Type
Non-Volatile
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Resistance In Ohms
10K
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Low Noise, Low Power, SPI
Wiper Only
The ISL22449 integrates four digitally controlled
potentiometers (DCP) and non-volatile memory 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
SPI serial 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
DCP’s IVR to the corresponding WR.
The DCP can be used as a voltage divider in a wide variety
of applications including control, parameter adjustments, AC
measurement and signal processing.
Pinout
Ordering Information
ISL22449UFV14Z*
ISL22449WFV14Z*
*Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is 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.
PART NUMBER
(Note)
RW3
GND
RW2
RW1
SCK
SDO
NC
(14 LD TSSOP)
1
2
3
4
5
6
7
TOP VIEW
ISL22449
22449 UFVZ
22449 WFVZ
®
1
MARKING
PART
14
13
12
11
10
9
8
Data Sheet
®
Bus, 128 Taps,
RW0
SHDN
V
NC
SDI
CS
NC
CC
1-888-INTERSIL or 1-888-468-3774
RESISTANCE OPTION
Quad Digitally Controlled Potentiometer (XDCP™)
(kΩ)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
50
10
Features
• Four potentiometers in one package
• 128 resistor taps
• SPI serial interface
• Non-volatile storage of wiper position
• Wiper resistance: 70Ω typical
• Shutdown mode
• Shutdown current 6.5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ or 10kΩ total resistance
• High reliability
• 14 Lead TSSOP
• Pb-free (RoHS compliant)
|
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T < +55
Intersil (and design) and XDCP are registered trademarks of Intersil Americas Inc.
TEMP. RANGE
-40 to +125
-40 to +125
All other trademarks mentioned are the property of their respective owners.
July 17, 2009
(°C)
Copyright Intersil Americas Inc. 2006, 2009. All Rights Reserved
14 Ld TSSOP
14 Ld TSSOP
PACKAGE
(Pb-free)
ISL22449
M14.173
M14.173
FN6333.3
°
DWG. #
C
PKG.

Related parts for ISL22449WFV14Z-TK

ISL22449WFV14Z-TK Summary of contents

Page 1

... MARKING ISL22449UFV14Z* 22449 UFVZ ISL22449WFV14Z* 22449 WFVZ *Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...

Page 2

Block Diagram SCK SDI INTERFACE SDO CS SHDN Pin Descriptions TSSOP PIN SYMBOL 1 RW3 SCK 4 SDO 5 GND 6 RW2 7 RW1 SDI VCC 13 SHDN 14 ...

Page 3

... Thermal Information Thermal Resistance (Typical, Note TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . + 0.3 CC Maximum Junction Temperature (Plastic Package .+150°C Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CC Recommended Operating Conditions Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C V Voltage for DCP Operation . . . . . . . . . . . . . . . . . . 2.7V to 5.5V CC Wiper Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -3mA to 3mA Power Rating ...

Page 4

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. SYMBOL PARAMETER I V Supply Current ...

Page 5

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) SYMBOL PARAMETER V SHDN, SCK, ...

Page 6

Timing Diagrams Input Timing CS t LEAD SCK MSB SDI HIGH IMPEDANCE SDO Output Timing CS SCK t V MSB SDO ADDR SDI XDCP Timing (for All Load Instructions) CS SCK MSB SDI V W HIGH ...

Page 7

Typical Performance Curves 100 V = 3.3V +125° 3.3V +20° TAP POSITION (DECIMAL) FIGURE 1. WIPER RESISTANCE vs ...

Page 8

Typical Performance Curves 1.0 0 2. 5.5V CC 10k -0.5 -1.0 -40 - TEMPERATURE (ºC) FIGURE 7. END TO END R % CHANGE vs TOTAL TEMPERATURE SIGNAL AT WIPER (WIPER UNLOADED) ...

Page 9

SERIAL DATA INPUT (SDI) The SDI is the serial data input pin for the SPI interface. It receives device address, operation code, wiper address and data from the SPI external host device. The data bits are shifted in at the ...

Page 10

TABLE 3. SHDN pin SHDN bit High 1 Low 1 High 0 Low 0 SPI Serial Interface The ISL22449 supports an SPI serial protocol, mode 0. The device is accessed via the SDI input and SDO output with data clocked ...

Page 11

CS SCK SDI SCK SDI SDO Applications Information Communicating with ISL22449 Communication with ISL22449 proceeds using SPI interface through the ACR (address 1000b), IVRi (addresses 0000b, 0001b, ...

Page 12

Examples: A. Writing to the IVR: This sequence will write a new value (77h) to the IVR2(non-volatile): Set the ACR (Addr 1000b) for NV write (40h) Send the ID byte, Instruction Byte, then the Data byte ...

Page 13

... 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 ...

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