X9110_08 INTERSIL [Intersil Corporation], X9110_08 Datasheet

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X9110_08

Manufacturer Part Number
X9110_08
Description
Dual Supply/Low Power/1024-Tap/SPI Bus
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
Single Digitally-Controlled (XDCP™)
Potentiometer
The X9110 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS integrated
circuit.
The digital controlled potentiometer is implemented using
1023 resistive elements in a series array. Between each
element are tap points connected to the wiper terminal
through switches. The position of the wiper on the array is
controlled by the user through the SPI bus interface. The
potentiometer has associated with it a volatile Wiper Counter
Register (WCR) and four non-volatile Data Registers that
can be directly written to and read by the user. The contents
of the WCR controls the position of the wiper on the resistor
array though the switches. Power-up recalls the contents of
the default data register (DR0) to the WCR.
The XDCP can be used as a three-terminal potentiometer or
as a two terminal variable resistor in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Functional Diagram
INTERFACE
BUS
SPI
ADDRESS
®
STATUS
DATA
1
Data Sheet
INTERFACE &
CONTROL
BUS
V
V
SS
CC
XDCP is a trademark of Intersil Americas INC. Copyright Intersil Americas Inc. 2005, 2008. All Rights Reserved
TRANSFER
CONTROL
1-888-INTERSIL or 1-888-468-3774
WRITE
READ
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
NC
POWER-ON RECALL
REGISTER (WCR)
Dual Supply/Low Power/1024-Tap/SPI Bus
DATA REGISTERS
WIPER COUNTER
Features
• 1024 Resistor Taps – 10-Bit Resolution
• SPI Serial Interface for write, read, and transfer operations
• Wiper Resistance, 40Ω Typical @ 5V
• Four Non-Volatile Data Registers
• Non-Volatile Storage of Multiple Wiper Positions
• Power-on Recall. Loads Saved Wiper Position on Power-up
• Standby Current < 3µA Max
• System V
• Analog V+/V-: -5V to +5V
• 100kΩ End to End Resistance
• 100 yr. Data Retention
• Endurance: 100, 000 Data Changes Per Bit Per Register
• 14 Ld TSSOP
• Dual Supply Version of the X9111
• Low Power CMOS
• Pb-Free Available (RoHS Compliant)
Pinout
(DR0-DR3)
NC
of the potentiometer
February 13, 2008
All other trademarks mentioned are the property of their respective owners.
|
CC
Intersil (and design) is a registered trademark of Intersil Americas Inc.
: 2.7V to 5.5V Operation
SCK
V
WP
A0
V+
S0
SS
SI
R
W
WIPER
14 LD TSSOP
1
2
3
4
5
6
7
TOP VIEW
X9110
R
R
H
L
POT
100kΩ
1024-TAPS
14
13
12
11
10
9
8
V-
V+
V
R
R
R
HOLD
CS
V-
CC
L
H
W
FN8158.3
X9110

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X9110_08 Summary of contents

Page 1

Data Sheet Single Digitally-Controlled (XDCP™) Potentiometer The X9110 integrates a single digitally controlled potentiometer (XDCP monolithic CMOS integrated circuit. The digital controlled potentiometer is implemented using 1023 resistive elements in a series array. Between each element are ...

Page 2

Ordering Information PART NUMBER PART MARKING X9110TV14 X9110TV X9110TV14Z* (Note) X9110TV Z X9110TV14I X9110TV I X9110TV14IZ (Note) X9110TV Z I X9110TV14-2.7 X9110TV F X9110TV14Z-2.7 (Note) X9110TV Z F X9110TV14I-2.7 X9110TV G X9110TV14IZ-2.7* (Note) X9110TV Z G *Please refer to TB347 ...

Page 3

Circuit Level Applications • Vary the gain of a voltage amplifier • Provide programmable dc reference voltages for comparators and detectors • Control the volume in audio circuits • Trim out the offset voltage error in a voltage amplifier circuit ...

Page 4

SERIAL DATA PATH FROM INTERFACE CIRCUITRY REGISTER 0 (DR0) REGISTER 2 (DR2) If WCR = 000[HEX] then WCR = 3FF[HEX] then FIGURE 1. DETAILED POTENTIOMETER BLOCK DIAGRAM Potentiometer Pins ...

Page 5

Data Registers via the XFR Data Register; ( loaded with the contents of its data register zero (DR0) upon power-up. The Wiper Counter Register is ...

Page 6

TABLE 4. IDENTIFICATION BYTE FORMAT DEVICE TYPE IDENTIFIER ID3 ID2 0 1 (MSB) TABLE 5. INSTRUCTION BYTE FORMAT INSTRUCTION OPCODE I2 I1 (MSB) Device Instructions Identification Byte (ID and A) The first byte sent to the X9110 from the host, ...

Page 7

Write in Process (WIP bit) The contents of the Data Registers are saved to nonvolatile memory when the CS pin goes from LOW to HIGH after a complete write sequence is received by the device. The progress of this internal ...

Page 8

INSTRUCTION R/W Read Wiper Counter 1 Register Write Wiper Counter 0 Register Read Data Register 1 Write Data Register 0 XFR Data Register to 1 Wiper Counter Register XFR Wiper Counter 0 Register to Data Register Read Status (WIP bit) ...

Page 9

Write Data Register (DR) Device Type Device Instruction Identifier Addresses Opcode CS Falling Edge Transfer Data Register (DR) to ...

Page 10

Absolute Maximum Ratings Voltage on SCK any Address Input with Respect ...

Page 11

D.C. Operating Specifications Over the recommended operating conditions unless otherwise specified SYMBOL PARAMETER I V Supply Current CC1 CC (active Supply Current CC2 CC (nonvolatile write Current (standby Input Leakage Current LI I ...

Page 12

Equivalent A.C. Load Circuit 5V 1462Ω SO pin 2714Ω 100pF AC Timing SYMBOL f SSI/SPI Clock Frequency SCK t SSI/SPI Clock Cycle Time CYC t SSI/SPI Clock High Time WH t SSI/SPI Clock Low Time WL t Lead Time LEAD ...

Page 13

High-Voltage Write Cycle Timing SYMBOL t High-Voltage Write Cycle Time (store instructions) WR XDCP Timing SYMBOL t Wiper Response Time After the Third (last) Power Supply is Stable WRPO t Wiper Response Time After Instruction Issued (all load instructions) WRL ...

Page 14

Timing Diagrams Input Timing CS t LEAD SCK MSB SI HIGH IMPEDANCE SO Output Timing CS SCK t V MSB SO ADDR SI Hold Timing CS SCK HOLD 14 X9110 t CYC ...

Page 15

XDCP Timing (For All Load Instructions) CS SCK MSB HIGH IMPEDANCE SO Write Protect And Device Address Pins Timing Applications information Basic Configurations Of Electronic Potentiometers V R Three terminal Potentiometer; Variable voltage ...

Page 16

Application Circuits NONINVERTING AMPLIFIER – (1 OFFSET VOLTAGE ADJUSTMENT 100kΩ – + TL072 10kΩ 10kΩ 10kΩ +12V -12V 16 X9110 V V ...

Page 17

Application Circuits (continued) ATTENUATOR – -1/2 ≤ G ≤ +1/2 INVERTING AMPLIFIER ...

Page 18

Thin Shrink Small Outline Plastic Packages (TSSOP) N INDEX 0.25(0.010) E AREA E1 - 0.05(0.002) SEATING PLANE - -C- α 0.10(0.004) 0.10(0.004 NOTES: 1. These package ...

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