X9260_06 INTERSIL [Intersil Corporation], X9260_06 Datasheet

no-image

X9260_06

Manufacturer Part Number
X9260_06
Description
Dual Digitally-Controlled Potentiometers
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
Dual Digitally-Controlled (XDCP™)
Potentiometers
FEATURES
• Dual–Two Separate Potentiometers
• 256 Resistor Taps/pot–0.4% Resolution
• SPI Serial Interface for Write, Read, and Transfer
• Wiper Resistance, 100Ω typical @ V+ = 5V,
• 4 Nonvolatile Data Registers for Each
• Nonvolatile Storage of Multiple Wiper Positions
• Power-on Recall. Loads Saved Wiper Position
• Standby Current <5µA Max
• V
• 50kΩ, 100kΩ Versions of End to End Resistance
• 100 yr. Data Retention
• Endurance: 100,000 Data Changes per Bit per
• 24 Ld SOIC
• Low Power CMOS
• Power Supply V
• Pb-Free Plus Anneal Available (RoHS Compliant)
FUNCTIONAL DIAGRAM
Interface
Operations of the Potentiometer
V- = -5V
Potentiometer
on Power-up.
Register
CC
Bus
SPI
: 2.7V to 5.5V Operation
Address
Status
Data
V+ = 2.7V to 5.5V
V- = -2.7V to -5.5V
CC
= 2.7V to 5.5V
®
and Control
Interface
V
V
1
Bus
CC
SS
Data Sheet
Transfer
Inc/Dec
Control
Write
Read
Registers (WCR)
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
Power-on Recall
Data Registers
Wiper Counter
1-888-INTERSIL or 1-888-468-3774
(DR0-DR3)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
V-
V
+
DESCRIPTION
The
potentiometer
integrated circuit.
The digitally controlled potentiometer is implemented
using 255 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. Each potentiometer has associated
with it a volatile Wiper Counter Register (WCR) and a
four nononvolatile 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.
Dual Supply/Low Power/256-Tap/SPI bus
R
August 29, 2006
W0
X9260
All other trademarks mentioned are the property of their respective owners
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
R
R
H0
L0
(XDCP)
integrates
R
50kΩ or 100kΩ versions
W1
R
R
H1
L1
on
2
a
digitally
monolithic
X9260
FN8170.3
controlled
CMOS

Related parts for X9260_06

X9260_06 Summary of contents

Page 1

Data Sheet Dual Digitally-Controlled (XDCP™) Potentiometers FEATURES • Dual–Two Separate Potentiometers • 256 Resistor Taps/pot–0.4% Resolution • SPI Serial Interface for Write, Read, and Transfer Operations of the Potentiometer • Wiper Resistance, 100Ω typical @ V+ = 5V, V- ...

Page 2

Ordering Information PART PART NUMBER MARKING X9260TS24I X9260TS I X9260TS24IZ (Note) X9260TS ZI X9260US24 X9260US X9260US24Z (Note) X9260US Z X9260TS24I-2.7 X9260TS G X9260TS24IZ-2.7 (Note) X9260TS ZG X9260US24-2.7 X9260US F X9260US24Z-2.7 (Note) X9260US ZF *Add "T1" suffix for tape and reel. ...

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

PIN ASSIGNMENTS Pin (SOIC) Symbol ...

Page 5

CS LOW enables the X9260, placing it in the active power mode. It should be noted that after a power-up, a HIGH to LOW transition required prior to the start of any operation. Potentiometer Pins ...

Page 6

Figure 1. Detailed Potentiometer Block Diagram One of Two Potentiometers SERIAL DATA PATH FROM INTERFACE CIRCUITRY REGISTER 0 (DR0) REGISTER 2 (DR2) IF WCR = 00[H] THEN WCR = FF[H] THEN ...

Page 7

Table 5. Wiper Counter Register, WCR (8-bit), WCR[7:0]: Used to store the current wiper position (Volatile, V). WCR7 WCR6 WCR5 V V (MSB) Table 5. Data Register, DR (8-bit), Bit [7:0]: Used to store wiper positions or data (Nonvolatile, NV). ...

Page 8

DEVICE DESCRIPTION Instructions Four of the ten instructions are three bytes in length. These instructions are: – Read Wiper Counter Register – read the current wiper position of the selected potentiometer, – Write Wiper Counter Register – change current wiper ...

Page 9

Figure 2. Two-Byte Instruction Sequence CS SCK ID3 ID2 ID1 ID0 Device ID Figure 3. Three-Byte Instruction Sequence (Write) CS SCL ID3 ID2 ID1 ID0 0 0 Internal Device ID ...

Page 10

Figure 5. Three-Byte Instruction Sequence (Read Status Register) CS SCL ID3 ID2 ID1 ID0 Internal Device ID Address Figure 6. Increment/Decrement Instruction Sequence CS SCL ...

Page 11

Table 5. Instruction Set Instruction I3 Read Wiper Counter 1 Register Write Wiper Counter 1 Register Read Data Register 1 Write Data Register 1 XFR Data Register to 1 Wiper Counter Register XFR Wiper Counter 1 Register to Data Register ...

Page 12

INSTRUCTION FORMAT Read Wiper Counter Register (WCR) Device Type Device Identifier Addresses CS Falling Edge Write Wiper Counter Register (WCR) Device Type Device Identifier Addresses CS ...

Page 13

Global Transfer Wiper Counter Register (WCR) to Data Register (DR) Device Type Device CS Identifier Addresses Falling Edge Transfer Wiper Counter Register (WCR) to ...

Page 14

ABSOLUTE MAXIMUM RATINGS Temperature under bias ........................ -65 to +135°C Storage temperature ............................. -65 to +150°C Voltage on SCK, SCL or any address input with respect to V ................................. -1V to +7V SS Voltage on V+ (referenced ...

Page 15

POTENTIOMETER CHARACTERISTICS (Over recommended operating conditions unless otherwise stated.) Symbol Parameter End to end resistance Power rating I Wiper current W R Wiper resistance W R Wiper resistance W Vv+ Voltage on V+ pin Vv- Voltage on V- pin V ...

Page 16

D.C. OPERATING CHARACTERISTICS Symbol Parameter I V supply current CC1 CC (active supply current CC2 CC (nonvolatile write current (standby Input leakage current LI I Output leakage current LO V Input HIGH voltage ...

Page 17

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 rime CYC t SSI/SPI clock high rime WH t SSI/SPI clock low time WL t Lead time LEAD ...

Page 18

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 19

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 19 X9260 t CYC ...

Page 20

XDCP Timing (for All Load Instructions) CS SCK MSB SI VWx High Impedance SO Write Protect and Device Address Pins Timing X9260 ... t WRL ... (Any Instruction WPAH WPASU LSB FN8170.3 August ...

Page 21

APPLICATIONS INFORMATION Basic Configurations of Electronic Potentiometers V R THREE- TERMINAL POTENTIOMETER; VARIABLE VOLTAGE DIVIDER Application Circuits NONINVERTING AMPLIFIER – (1 OFFSET VOLTAGE ADJUSTMENT R 1 ...

Page 22

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

Page 23

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - -C- α 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the ...

Related keywords