X9110
®
Dual Supply/Low Power/1024-Tap/SPI Bus
Data Sheet
October 7, 2005
Single Digitally-Controlled (XDCP™)
Potentiometer
FN8158.2
Features
• 1024 Resistor Taps – 10-Bit Resolution
The X9110 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS integrated
circuit.
• SPI Serial Interface for write, read, and transfer operations
of the potentiometer
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.
• 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 VCC: 2.7V to 5.5V Operation
• 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 Plus Anneal Available (RoHS Compliant)
Pinout
X9110
14 LD TSSOP
TOP VIEW
V+
1
14
VCC
S0
2
13
RL
A0
3
12
RH
SCK
4
11
RW
WP
SI
VSS
5
10
HOLD
6
9
8
7
CS
V-
Functional Diagram
VCC
ADDRESS
DATA
STATUS
SPI
BUS
INTERFACE
BUS
INTERFACE &
CONTROL
RH
WRITE
READ
TRANSFER
CONTROL
VSS
1
NC
POWER-ON RECALL
100kΩ
1024-TAPS
POT
WIPER COUNTER
REGISTER (WCR)
DATA REGISTERS
(DR0-DR3)
NC
V+
WIPER
RW
RL
V-
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X9110
Ordering Information
PART NUMBER
PART MARKING
VCC LIMITS (V)
POTENTIOMETER
RANGE (kΩ)
TEMP RANGE (°C)
5 ±10
100
0 to 70
14 Ld TSSOP
14 Ld TSSOP (Pb-free)
PACKAGE
X9110TV14
X9110TV
X9110TV14Z (Note)
X9110TV Z
0 to 70
X9110TV14I
X9110TV I
-40 to 85
14 Ld TSSOP
X9110TV14IZ (Note)
X9110TV Z I
-40 to 85
14 Ld TSSOP (Pb-free)
X9110TV14-2.7
X9110TV F
X9110TV14Z-2.7 (Note)
X9110TV Z F
X9110TV14I-2.7
X9110TV G
-40 to 85
14 Ld TSSOP
X9110TV14IZ-2.7 (Note)
X9110TV Z G
-40 to 85
14 Ld TSSOP (Pb-free)
2.7 to 5.5
0 to 70
14 Ld TSSOP
0 to 70
14 Ld TSSOP (Pb-free)
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.
Detailed Functional Diagram
VCC
V+
POWER ON
RECALL
HOLD
CS
DR0
SCK
INTERFACE
AND
CONTROL
CIRCUITRY
SO
SI
A0
DR1
DATA
DR2
DR3
RH
WIPER
COUNTER
REGISTER
(WCR)
100kΩ
1024-TAPS
RL
CONTROL
RW
WP
VSS
2
V-
FN8158.2
October 7, 2005
X9110
Circuit Level Applications
Pin Descriptions
• Vary the gain of a voltage amplifier
PIN
(TSSOP)
SYMBOL
FUNCTION
11
RW
Wiper Terminal of the Potentiometer
• Control the volume in audio circuits
12
RH
High Terminal of the Potentiometer
• Trim out the offset voltage error in a voltage amplifier
circuit
13
RL
Low Terminal of the Potentiometer
14
VCC
• Provide programmable dc reference voltages for
comparators and detectors
• Set the output voltage of a voltage regulator
• Trim the resistance in Wheatstone bridge circuits
• Control the gain, characteristic frequency and Q-factor in
filter circuits
• Set the scale factor and zero point in sensor signal
conditioning circuits
• Vary the frequency and duty cycle of timer ICs
• Vary the dc biasing of a pin diode attenuator in RF circuits
• Provide a control variable (I, V, or R) in feedback circuits
System Level Applications
• Adjust the contrast in LCD displays
• Control the power level of LED transmitters in
communication systems
• Set and regulate the DC biasing point in an RF power
amplifier in wireless systems
• Control the gain in audio and home entertainment systems
• Provide the variable DC bias for tuners in RF wireless
systems
• Set the operating points in temperature control systems
• Control the operating point for sensors in industrial
systems
• Trim offset and gain errors in artificial intelligent systems
Pin Descriptions
PIN
(TSSOP)
SYMBOL
1
V+
Analog Supply Voltage
2
SO
Serial Data Output
3
A0
Device Address
4
SCK
Serial Clock
5
WP
Hardware Write Protect
6
SI
Serial Data Input
7
VSS
System Ground
8
V-
Analog Supply Voltage
9
CS
Chip Select
10
HOLD
FUNCTION
System Supply Voltage
Bus Interface Pins
SERIAL OUTPUT (SO)
SO is a serial data output pin. During a read cycle, data is
shifted out on this pin. Data is clocked out on the falling edge
of the serial clock.
SERIAL INPUT (SI)
SI is the serial data input pin. All opcodes, byte addresses
and data to be written to the pots and pot registers are input
on this pin. Data is latched by the rising edge of the serial
clock.
SERIAL CLOCK (SCK)
The SCK input is used to clock data into and out of the
X9110.
HOLD (HOLD)
HOLD is used in conjunction with the CS pin to select the
device. Once the part is selected and a serial sequence is
underway, HOLD may be used to pause the serial
communication with the controller without resetting the serial
sequence. To pause, HOLD must be brought LOW while SCK is
LOW. To resume communication, HOLD is brought HIGH, again
while SCK is LOW. If the pause feature is not used, HOLD should
be held HIGH at all times.
DEVICE ADDRESS (A0)
The address input is used to set the 8-bit slave address. A
match in the slave address serial data stream A0 must be
made with the address input (A0) in order to initiate
communication with the X9110.
CHIP SELECT (CS)
When CS is HIGH, the X9110 is deselected and the SO pin
is at high impedance, and (unless an internal write cycle is
underway) the device will be in the standby state. CS LOW
enables the X9110, placing it in the active power mode. It
should be noted that after a power-up, a HIGH to LOW
transition on CS is required prior to the start of any
operation.
HARDWARE WRITE PROTECT INPUT (WP)
The WP pin when LOW prevents nonvolatile writes to the
Data Registers.
Device Select. Pause the Serial Bus
3
FN8158.2
October 7, 2005
X9110
Serial Data Path
RH
Serial
Bus
Input
From Interface
Circuitry
Register 0
(DR0)
Register 1
(DR1)
10
Register 2
(DR2)
10
Register 3
(DR3)
Parallel
Bus
Input
Wiper
Counter
Register
(WCR)
C
O
U
N
T
E
R
D
E
C
O
D
E
If WCR = 000[HEX] then RW = RL
If WCR = 3FF[HEX] then RW = RH
RL
R
W
FIGURE 1. DETAILED POTENTIOMETER BLOCK DIAGRAM
Potentiometer Pins
on the rising SCK. CS must be LOW and the HOLD and WP
pins must be HIGH during the entire operation.
RH, RL
The RH and RL pins are equivalent to the terminal
connections on a mechanical potentiometer.
RW
The wiper pin are equivalent to the wiper terminal of a
mechanical potentiometer.
Bias Supply Pins
SYSTEM SUPPLY VOLTAGE (VCC) AND SUPPLY
GROUND (VSS)
The VCC pin is the system supply voltage. The VSS pin is
the system ground.
ANALOG SUPPLY VOLTAGES (V+ AND V-)
These supplies are the analog voltage supplies for the
potentiometer. The V+ supply is tied to the wiper switches
while the V- supply is used to bias the switches and the
internal P+ substrate of the integrated circuit. Both of these
supplies set the voltage limits of the potentiometer.
Principles Of Operation
Device Description
SERIAL INTERFACE
The X9110 supports the SPI interface hardware conventions.
The device is accessed via the SI input with data clocked-in
4
The SO and SI pins can be connected together, since they
have three state outputs. This can help to reduce system pin
count.
ARRAY DESCRIPTION
The X9110 is comprised of a resistor array (Figure 1). The
array contains the equivalent of 1023 discrete resistive
segments that are connected in series. The physical ends of
each array are equivalent to the fixed terminals of a
mechanical potentiometer (RH and RL inputs).
At both ends of each array and between each resistor
segment is a CMOS switch connected to the wiper (RW)
output. Within the individual array only one switch may be
turned on at a time.
These switches are controlled by a Wiper Counter Register
(WCR). The 10-bits of the WCR (WCR[9:0]) are decoded to
select, and enable, one of 1024 switches.
WIPER COUNTER REGISTER (WCR)
The X9110 contains a Wiper Counter Register (See Table 1)
for the XDCP potentiometer. The WCR is equivalent to a
serial-in, parallel-out register/counter with its outputs
decoded to select one of 1024 switches along its resistor
array. The contents of the WCR can be altered in one of
three ways: (1) it may be written directly by the host via the
write Wiper Counter Register instruction (serial load); (2) it
FN8158.2
October 7, 2005
X9110
may be written indirectly by transferring the contents of one
of four associated Data Registers via the XFR Data Register;
(3) it is loaded with the contents of its data register zero
(DR0) upon power-up.
If the application does not require storage of multiple
settings for the potentiometer, the Data Registers can be
used as regular memory locations for system parameters or
user preference data.
The Wiper Counter Register is a volatile register; that is, its
contents are lost when the X9110 is powered-down. Although
the register is automatically loaded with the value in DR0 upon
power-up, this may be different from the value present at
power-down. Power-up guidelines are recommended to ensure
proper loadings of the DR0 value into the WCR.
DR[9:0] is used to store one of the 1024 wiper position (0
~1023). Table 2.
DATA REGISTERS (DR)
WIP: Write In Progress status bit, read only.
The potentiometer has four 10-bit non-volatile Data
Registers. These can be read or written directly by the host.
Data can also be transferred between any of the four Data
Registers and the Wiper Counter Register. All operations
changing data in one of the Data Registers is a nonvolatile
operation and will take a maximum of 10ms.
• When WIP=1, indicates that high-voltage write cycle is in
progress.
STATUS REGISTER (SR)
This 1-bit status register is used to store the system status
(see Table 3).
• When WIP=0, indicates that no high-voltage write cycle is
in progress.
TABLE 1. WIPER CONTROL REGISTER, WCR (10-BIT), WCR9–WCR0: Used To Store The Current Wiper Position (Volatile, V)
WCR9
WCR8
WCR7
WCR6
WCR5
WCR4
WCR3
WCR2
WCR1
WCR0
V
V
V
V
V
V
V
V
V
V
(MSB)
(LSB)
TABLE 2. DATA REGISTER, DR (10-BIT), BIT 9–BIT 0: Used to store wiper positions or data (Non-Volatile, NV)
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
NV
NV
NV
NV
NV
NV
NV
NV
NV
NV
MSB
LSB
TABLE 3. STATUS REGISTER, SR (1-BIT)
WIP
(LSB)
5
FN8158.2
October 7, 2005
X9110
TABLE 4. IDENTIFICATION BYTE FORMAT
Internal Slave
Address
Device Type
Identifier
ID3
ID2
ID1
ID0
0
1
0
1
0
0
A0
(MSB)
Read or
Write Bit
R/W
(LSB)
TABLE 5. INSTRUCTION BYTE FORMAT
Register
Selection
Instruction
Opcode
I2
I1
I0
0
(MSB)
Device Instructions
Identification Byte (ID and A)
The first byte sent to the X9110 from the host, following a CS
going HIGH to LOW, is called the Identification Byte. The
most significant four bits of the slave address are a device
type identifier. The ID[3:0] bits is the device ID for the X9110;
this is fixed as 0101[B] (refer to Table 4).
The A0 bit in the ID byte is the internal slave address. The
physical device address is defined by the state of the A0 input
pin. The slave address is externally specified by the user. The
X9110 compares the serial data stream with the address input
state; a successful compare of the address bit is required for
the X9110 to successfully continue the command sequence.
Only the device whose slave address matches the incoming
device address sent by the master executes the instruction.
The A0 input can be actively driven by CMOS input signals or
tied to VCC or VSS. The R/W bit is used to set the device to
either read or write mode.
Instruction Byte and Register Selection
The next byte sent to the X9110 contains the instruction and
register pointer information. The three most significant bits
are used provide the instruction opcode (I[2:0]). The RB and
RA bits point to one of the four registers. The format is
shown in Table 5.
RB
RA
RB
RA
Register
0
0
1
1
0
1
0
1
DR0
DR1
DR2
DR3
0
0
(LSB)
Five of the seven instructions are four bytes in length. These
instructions are:
• Read Wiper Counter Register – read the current wiper
position of the selected pot,
• Write Wiper Counter Register – change current wiper
position of the selected pot,
• Read Data Register – read the contents of the selected
data register;
• Write Data Register – write a new value to the selected
data register.
• Read Status – This command returns the contents of the
WIP bit which indicates if the internal write cycle is in
progress.
The basic sequence of the four byte instructions is illustrated
in Figure 3. These four-byte instructions exchange data
between the WCR and one of the Data Registers. A transfer
from a Data Register to a WCR is essentially a write to a
static RAM, with the static RAM controlling the wiper
position. The response of the wiper to this action will be
delayed by tWRL. A transfer from the WCR (current wiper
position), to a Data Register is a write to nonvolatile memory
and takes a minimum of tWR to complete. The transfer can
occur between the potentiometer and one of its associated
registers. The Read Status Register instruction is the only
unique format (see Figure 4).
Two instructions require a two-byte sequence to complete
(See Figure 2). These instructions transfer data between the
host and the X9110; either between the host and one of the
Data Registers or directly between the host and the Wiper
Counter Register. These instructions are:
• XFR Data Register to Wiper Counter Register – This
transfers the contents of one specified Data Register to
6
the associated Wiper Counter Register.
• XFR Wiper Counter Register to Data Register – This
transfers the contents of the specified Wiper Counter
Register to the specified associated Data Register.
FN8158.2
October 7, 2005
X9110
See Instruction format for more details.
Power-up and Down Requirements
Write in Process (WIP bit)
At all times, the V+ voltage must be greater than or equal to
the voltage at RH or RL, and the voltage at RH or RL must be
greater than or equal to the voltage at V-. During power-up
and power-down, VCC, V+, and V- must reach their final
values within 1msec of each other.
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 write operation can be monitored by
a Write In Process bit (WIP). The WIP bit is read with a Read
Status command (See Figure 4).
CS
SCK
SI
0
1
0
1
0
0
ID3
ID2
ID1
ID0
0
0
Device ID
0
A0
R/W
Internal
Address
I2
I1
I0
RB
Instruction
Opcode
RA
0
0
0
0
Register
Address
FIGURE 2. TWO-BYTE INSTRUCTION SEQUENCE
CS
SCK
SI
0
1
0
1
0
0 0
A0 R/W I2 I1
ID3 ID2 ID1 ID0 0
Internal
Address
Device ID
0
X
X
0
0 X
X
X X
W
C
R
9
I0 0 RB RA 0 0
Instruction
Opcode
X X
Register
Address
W
C
R
8
W
C
R
7
W
C
R
6
W
C
R
5
W
C
R
4
W
C
R
3
W
C
R
2
W
C
R
1
W
C
R
0
Wiper
Position
FIGURE 3. FOUR-BYTE INSTRUCTION SEQUENCE (WRITE OR READ FOR WCR OR DATA REGISTERS)
CS
SCK
SI
0
1
0
1
0 0
ID3 ID2 ID1 ID0 0 0
Device ID
1
A0 R/W I2 I1
Internal
Address
0
0
0 RB RA 0
0
0
I0
Instruction
Opcode
X
X
X
X X X
X X X X
0
0
0
0 0
0 0
Register
Address
WIP
Status
Bit
FIGURE 4. FOUR-BYTE INSTRUCTION SEQUENCE (READ STATUS REGISTERS)
7
FN8158.2
October 7, 2005
X9110
TABLE 6. INSTRUCTION SET
INSTRUCTION SET
INSTRUCTION
R/W
I2
I1
I0
0
RB
RA
0
0
OPERATION
Read Wiper Counter
Register
1
1
0
0
0
0
0
0
0
Read the contents of the Wiper Counter
Register
Write Wiper Counter
Register
0
1
0
1
0
0
0
0
0
Write new value to the Wiper Counter
Register
Read Data Register
1
1
0
1
0
1/0
1/0
0
0
Read the contents of the Data Register
pointed to RB-RA
Write Data Register
0
1
1
0
0
1/0
1/0
0
0
Write new value to the Data Register
pointed to RB-RA
XFR Data Register to
Wiper Counter Register
1
1
1
0
0
1/0
1/0
0
0
Transfer the contents of the Data Register
pointed to by RB-RA to the Wiper Counter
Register
XFR Wiper Counter
Register to Data Register
0
1
1
1
0
1/0
1/0
0
0
Transfer the contents of the Wiper Counter
Register to the Data Register pointed to by
RB-RA
Read Status (WIP bit)
1
0
1
0
0
0
0
0
1
Read the status of the internal write cycle,
by checking the WIP bit (read status
register).
NOTE: 1/0 = data is one or zero
Instruction Format
Read Wiper Counter Register (WCR)
CS
Falling
Edge
0
1
0
1
Device
Addresses
0
0 A0
Instruction
Opcode
R/ W = 1
Device Type
Identifier
1
0
0
Register
Addresses
0
0
0
0
Wiper Position
(Sent by X9110 on SO)
0
W
C
X X X X X X R
9
Wiper Position
(sent by X9110 on SO)
W
C
R
8
W
C
R
7
W
C
R
6
W
C
R
5
W
C
R
4
W
C
R
3
W
C
R
2
W
C
R
1
CS
W Rising
C Edge
R
0
Write Wiper Counter Register (WCR)
CS
Falling
Edge
0
1
0
1
Device
Addresses
0
0 A0
Instruction
Opcode
R/ W = 0
Device Type
Identifier
1
0
1
Register
Addresses
0
0
0
0
0
Wiper Position
(Sent by Master on SI)
W
C
X X X X X X R
9
Wiper Position
(Sent by Master on SI)
W
C
R
8
W
C
R
7
W
C
R
6
W
C
R
5
W
C
R
4
W
C
R
3
W
C
R
2
W
C
R
1
CS
W Rising
C Edge
R
0
Read Data Register (DR)
CS
Falling
Edge
0
1
0
1
Device
Addresses
0
0
A0
8
R/ W = 1
Device Type
Identifier
Instruction
Opcode
1
0
1
Register
Addresses
0 RB RA 0
Wiper Position
(Sent by X9110 on SO)
0
W
C
X X X X X X R
9
Wiper Position
(sent by X9110 on SO)
W
C
R
8
W
C
R
7
W
C
R
6
W
C
R
5
W
C
R
4
W
C
R
3
W
C
R
2
W
C
R
1
CS
W Rising
C Edge
R
0
FN8158.2
October 7, 2005
X9110
CS
Falling
Edge 0
1
0
Device
Addresses
1
0
0 A0
Instruction
Opcode
R/ W = 0
Device Type
Identifier
Register
Address
1 1 0 0 RB RA 0
Wiper Position or Data
(Sent by Master on SI)
W
0 X X X X X X C
R
9
W
C
R
8
Wiper Position or Data
(Sent by Master on SI)
W
C
R
7
W
C
R
6
W
C
R
5
W
C
R
4
W
C
R
3
W
C
R
2
CS
W Rising
Edge
C
R
0
W
C
R
1
HIGH-VOLTAGE
WRITE CYCLE
Write Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR)
0
1
0
1
Device
Addresses
0
Instruction
Opcode
R/ W = 1
CS
Falling
Edge
Device Type
Identifier
0 A0
1
1
0
Register
Address
0 RB RA 0
CS
Rising
Edge
0
Transfer Wiper Counter Register (WCR) to Data Register (DR)
CS
Falling
Edge
0
1
0
1
Device
Addresses
0
0 A0
R/ W = 0
Device Type
Identifier
Instruction
Opcode
1
1
1
Register
Address
0
RB
RA
CS
Rising
Edge
0
0
HIGH-VOLTAGE
WRITE CYCLE
Read Status Register (SR)
CS
Falling
Edge
0
1
0
1
Device
Addresses
0
0 A0
R/ W = 1
Device Type
Identifier
Instruction
Opcode
0
1
0
X
Register
Addresses
0
0
0
1
Status Data
(Sent by Slave on SO)
X
X
X
X
X
X
X
Status Data
(Sent by Slave on SO)
X
0
0
0
0
0
0
CS
Rising
Edge
0 WIP
NOTES:
1. “A0”: stands for the device address sent by the master.
2. WCRx refers to wiper position data in the Wiper Counter Register
3. “X”: Don’t Care.
9
FN8158.2
October 7, 2005
X9110
Absolute Maximum Ratings
Recommended Operating Conditions
Temperature under bias . . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Voltage on SCK any address input
with respect to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
Voltage on V+ (referenced to VSS) (Note 4) . . . . . . . . . . . . . . . .10V
Voltage on V- (referenced to VSS) (Note 4) . . . . . . . . . . . . . . . . -10V
(V+) - (V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V
Any Voltage on RH/RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V+
Any Voltage on RL/RH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VLead temperature (soldering, 10s). . . . . . . . . . . . . . . . . . . . . . 300°C
IW (10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Temperature Range
Commercial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Industrial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Supply Voltage (VCC) Limits (Note 4)
X9110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ± 10%
X9110-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Analog Specifications
SYMBOL
RTOTAL
Over recommended industrial (2.7V) operation conditions unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
End to End Resistance
TYP
100
End to End Resistance Tolerance
Power Rating
MAX
25°C, each pot
kΩ
±20
%
50
mW
±3
mA
500
Ω
100
Ω
V
IW
Wiper Current
RW
Wiper Resistance
Wiper Current = ±3mA, VCC = 3V
RW
Wiper Resistance
IW = ±3mA, VCC = 5V
Vv+
Voltage on V+ pin
X9110 (Note4)
+4.5
+5.5
X9110-2.7 (Note 4)
+2.7
+5.5
X9110 (Note 4)
-5.5
-4.5
X9110-2.7 (Note4)
-5.5
-2.7
V-
V+
Vv-
VTERM
Voltage on V- pin
Voltage on any RH or RL Pin
VSS = 0V
Noise
Ref: 1V
Resolution
Absolute Linearity (Note 1)
Relative Linearity (Note 2)
150
V
dBV
0.1
%
Rw(n)(actual) – Rw(n)(expected), where n = 8 to 1006
±1
MI (Note 3)
Rw(n)(actual) – Rw(n)(expected) (Note 5)
±1.5
MI (Note 3)
Rw(m + 1) – [Rw(m) + MI], where m = 8 to 1006
±0.5
MI (Note 3)
±1
MI (Note 3)
±300
Temperature Coefficient of RTOTAL
Ratiometric Temp. Coefficient
Potentiometer Capacitancies
V
-120
Rw(m + 1) – [Rw(m) + MI] (Note 5)
CH/CL/CW
UNITS
ppm/°C
20
See Macro model
10/10/25
ppm/°C
pF
NOTES:
1. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
2. Relative linearity is utilized to determine the actual change in voltage between two successive tap positions when used as a potentiometer. It is
a measure of the error in step size.
3. MI = RTOT / 1023 or (RH – RL) / 1023, single pot
4. VCC, V+, V- must reach their final values within 1 msec of each other.
5. n = 0, 1, 2, …,1023; m =0, 1, 2, …, 1022.
10
FN8158.2
October 7, 2005
X9110
D.C. Operating Specifications Over the recommended operating conditions unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
400
µA
5
mA
ICC1
VCC supply current
(active)
fSCK = 2.5 MHz, SO = Open, VCC = 5.5V
Other Inputs = VSS
ICC2
VCC supply current
(nonvolatile write)
fSCK = 2.5MHz, SO = Open, VCC = 5.5V
Other Inputs = VSS
ISB
VCC current (standby)
SCK = SI = VSS, Addr. = VSS,
CS = VCC = 5.5V
3
µA
ILI
Input leakage current
VIN = VSS to VCC
10
µA
ILO
Output leakage current
VOUT = VSS to VCC
10
µA
VIH
Input HIGH voltage
VCC x 0.7
VCC + 1
V
VIL
Input LOW voltage
-1
VCC x 0.3
V
VOL
Output LOW voltage
IOL = 3mA
0.4
V
VOH
Output HIGH voltage
IOH = -1mA, VCC ≥ +3V
VCC - 0.8
V
VOH
Output HIGH voltage
IOH = -0.4mA, VCC ≤ +3V
VCC - 0.4
V
1
Endurance and Data Retention
PARAMETER
MIN
UNITS
Minimum Endurance
100,000
Data changes per bit per register
Data Retention
100
years
Capacitance
SYMBOL
TEST
CIN/OUT (Notes 4,6)
COUT (Note 6)
CIN (Note 6)
TEST CONDITIONS
MAX
UNITS
Input/Output capacitance (SI)
VOUT = 0V
8
pF
Output capacitance (SO)
VOUT = 0V
8
pF
VIN = 0V
6
pF
Input capacitance (A0, CS, WP, HOLD, and SCK)
Power-up Timing
SYMBOL
tr VCC (Note 6)
PARAMETER
VCC Power-up Rate
MIN
MAX
UNITS
0.2
50
V/ms
tPUR (Note7)
Power-up to Initiation of read operation
1
ms
tPUW (Note 7)
Power-up to Initiation of write operation
50
ms
NOTES:
6. This parameter is not 100% tested
7. tPUR and tPUW are the delays required from the time the (last) power supply (VCC-) is stable until the specific instruction can be issued. These
parameters are not 100% tested.
8. ESD Rating on RH, RL, RW pins is 1.5kV (HBM, 1.0µA leakage maximum), ESD rating on all other pins is 2.0kV.
A.C. Test Conditions
Input pulse levels
VCC x 0.1 to VCC x 0.9
Input rise and fall times
10ns
Input and output timing level
VCC x 0.5
11
FN8158.2
October 7, 2005
X9110
Equivalent A.C. Load Circuit
2.7V
5V
1462Ω
SPICE Macromodel
1382Ω
RTOTAL
SO pin
SO pin
2714Ω
1217Ω
100pF
RL
RH
100pF
CW
CL
10pF
CL
10pF
25pF
RW
AC Timing
SYMBOL
PARAMETER
MIN
MAX
UNITS
2.0
MHz
fSCK
SSI/SPI clock frequency
tCYC
SSI/SPI clock cycle time
400
ns
tWH
SSI/SPI clock high time
150
ns
tWL
SSI/SPI clock low time
150
ns
tLEAD
Lead time
150
ns
tLAG
Lag time
150
ns
tSU
SI, SCK, HOLD and CS input setup time
50
ns
tH
SI, SCK, HOLD and CS input hold time
50
ns
tRI
SI, SCK, HOLD and CS input rise time
50
ns
tFI
SI, SCK, HOLD and CS input fall time
50
ns
500
ns
100
ns
tDIS
SO output disable time
0
tV
SO output valid time
tHO
SO output hold time
tRO
SO output rise time
50
ns
tFO
SO output fall time
50
ns
tHOLD
0
ns
HOLD time
400
ns
tHSU
HOLD setup time
50
ns
tHH
HOLD hold time
50
ns
tHZ
HOLD low to output in high Z
100
ns
tLZ
HOLD high to output in low Z
100
ns
TI
Noise suppression time constant at
SI, SCK, HOLD and CS inputs
20
ns
tCS
CS deselect time
100
ns
tWPASU
WP, A0 setup time
0
ns
tWPAH
WP, A0 hold time
0
ns
12
FN8158.2
October 7, 2005
X9110
High-Voltage Write Cycle Timing
SYMBOL
tWR
PARAMETER
TYP.
MAX.
UNITS
5
10
ms
MIN.
MAX.
UNITS
Wiper response time after the third (last) power supply is stable
5
10
µs
Wiper response time after instruction issued (all load instructions)
5
10
µs
High-voltage write cycle time (store instructions)
XDCP Timing
SYMBOL
tWRPO
tWRL
PARAMETER
Symbol Table
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from Low to
High
Will change
from Low to
High
May change
from High to
Low
Will change
from High to
Low
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
13
FN8158.2
October 7, 2005
X9110
Timing Diagrams
Input Timing
tCS
CS
SCK
tSU
tH
...
tWH
tWL
...
MSB
SI
tLAG
tCYC
tLEAD
tRI
tFI
LSB
High Impedance
SO
Output Timing
CS
SCK
...
tV
tDIS
...
MSB
SO
SI
tHO
LSB
ADDR
Hold Timing
CS
tHSU
SCK
tHH
...
tRO
tFO
SO
tHZ
tLZ
SI
tHOLD
HOLD
14
FN8158.2
October 7, 2005
X9110
XDCP Timing (For All Load Instructions)
CS
SCK
...
tWRL
SI
...
MSB
LSB
RW
SO
High Impedance
Write Protect And Device Address Pins Timing
(Any Instruction)
CS
tWPASU
tWPAH
WP
A0
A1
Applications information
Basic Configurations Of Electronic Potentiometers
+VR
VR
RW
I
Three terminal Potentiometer;
Variable voltage divider
Two terminal Variable Resistor;
Variable current
15
FN8158.2
October 7, 2005
X9110
Application Circuits
Noninverting Amplifier
VS
Voltage Regulator
+
VO
–
VIN
VO (REG)
317
R1
R2
Iadj
R1
R2
VO = (1+R2/R1)VS
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
Offset Voltage Adjustment
R1
Comparator with Hysterisis
R2
VS
VS
–
+
VO
100kΩ
–
VO
+
+12V
10kΩ
}
10kΩ
}
TL072
10kΩ
R1
R2
VUL = {R1/(R1+R2)} VO(max)
RLL = {R1/(R1+R2)} VO(min)
-12V
16
FN8158.2
October 7, 2005
X9110
Application Circuits (continued)
Attenuator
Filter
C
VS
+
R2
R1
VS
VO
–
–
R
VO
+
R3
R4
R2
R1 = R2 = R3 = R4 = 10kW
R1
GO = 1 + R2/R1
fc = 1/(2πRC)
VO = G VS
-1/2 ≤ G ≤ +1/2
R2
}
VS
R1
}
Inverting Amplifier
Equivalent L-R Circuit
R2
C1
–
VS
VO
+
+
–
R1
ZIN
VO = G VS
G = - R2/R1
R3
ZIN = R2 + s R2 (R1 + R3) C1 = R2 + s Leq
(R1 + R3) >> R2
Function Generator
C
R2
–
R1
–
+
} RA
+
} RB
frequency ∝ R1, R2, C
amplitude ∝ RA, RB
17
FN8158.2
October 7, 2005
X9110
Packaging Information
14-Lead Plastic, TSSOP, Package Type V
.025 (.65) BSC
.169 (4.3)
.252 (6.4) BSC
.177 (4.5)
.193 (4.9)
.200 (5.1)
.047 (1.20)
.0075 (.19)
.0118 (.30)
.002 (.05)
.006 (.15)
.010 (.25)
Gage Plane
0° – 8 °
Seating Plane
.019 (.50)
.029 (.75)
Detail A (20X)
.031 (.80)
.041 (1.05)
See Detail “A”
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
18
FN8158.2
October 7, 2005