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PDF ISL90810 Data sheet ( Hoja de datos )
| Número de pieza | ISL90810 | |
| Descripción | Low Noise/Low Power/I2C Bus/256 Taps | |
| Fabricantes | Intersil Corporation | |
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ISL90810
Single Digitally Controlled Potentiometer (XDCP™)
Data Sheet
October 13, 2005
FN8234.1
Low Noise/Low Power/I2C Bus/256 Taps
The ISL90810 integrates a digitally controlled potentiometer
(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
Wiper Register (WR) that can be directly written to and read
by the user. The contents of the WR controls the position of
the wiper.
The DCP can be used as three-terminal potentiometer or as
two-terminal variable resistor in a wide variety of applications
including control, parameter adjustments, and signal
processing.
Ordering Information
PART RTOTAL TEMP
PART NUMBER MARKING (kΩ) RANGE (°C) PACKAGE
ISL90810WIU8* AJL
10 -40 to +85 8 Ld MSOP
ISL90810WIU8Z* DEN
(Note)
-40 to +85 8 Ld MSOP
(Pb-free)
ISL90810UIU8* AJK
50 -40 to +85 8 Ld MSOP
ISL90810UIU8Z* DEM
(Note)
-40 to +85 8 Ld MSOP
(Pb-free)
*Add "-TK" 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
• 256 resistor taps - 0.4% resolution
• I2C serial interface
• Wiper resistance: 70Ω typical @ 3.3V
• Standby current 5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ, 10kΩ total resistance
• 8 Ld MSOP
• Pb-free plus anneal available (RoHS compliant)
Pinout
ISL90810
(8 LD MSOP)
TOP VIEW
NC
SCL
SDA
GND
1
2
3
4
8 VCC
7 RH
6 RL
5 RW
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL90810
SDA vs SCL Timing
tF
tHIGH
tLOW
tR
SCL
tSU:STA
SDA
(INPUT TIMING)
SDA
(OUTPUT TIMING)
tHD:STA
tSU:DAT
tHD:DAT
tAA tDH
tSU:STO
tBUF
NOTES:
1. Typical values are for TA = 25°C and 3.3V supply voltage.
2. LSB: [V(RW)255 – V(RW)0]/255. V(RW)255 and V(RW)0 are V(RW) for the DCP register set to FF hex and 00 hex respectively. LSB is the
incremental voltage when changing from one tap to an adjacent tap.
3. ZS error = V(RW)0/LSB.
4. FS error = [V(RW)255 – VCC]/LSB.
5. DNL = [V(RW)i – V(RW)i-1]/LSB-1, for i = 1 to 255. i is the DCP register setting.
6. INL = (V(RW)i – i • LSB – V(RW)0)/LSB, for i = 1 to 255.
7.
TCV
=
-------M-----a----x----(--V----(---R-----W------)--i--)---–-----M-----i--n----(--V-----(--R-----W------)--i--)------ × ----1----0---6-----
[Max(V(RW)i) + Min(V(RW)i)] ⁄ 2 125°C
for i = 16 to 240 decimal, T = -40°C to 85°C. Max( ) is the maximum value of the wiper
voltage and Min ( ) is the minimum value of the wiper voltage over the temperature range.
8. MI = |R255 – R0|/255. R255 and R0 are the measured resistances for the DCP register set to FF hex and 00 hex respectively.
Roffset = R0/MI, when measuring between RW and RL.
9. Roffset = R255/MI, when measuring between RW and RH.
10. RDNL = (Ri – Ri-1)/MI, for i = 32 to 255.
11. RINL = [Ri – (MI • i) – R0]/MI, for i = 32 to 255.
12.
TCR
=
----[---M-----a----x----(--R-----i--)---–-----M-----i--n----(--R-----i--)--]----
[Max(Ri) + Min(Ri)] ⁄ 2
×
----1----0---6-----
125 °C
for i = 32 to 255, T = -40°C to 85°C. Max( ) is the maximum value of the resistance and Min ( ) is the
minimum value of the resistance over the temperature range.
13. This parameter is not 100% tested.
Equivalent Circuitry
RTOTAL
RH RL
CL
CH CW 10pF
10pF
25pF
RW
5 FN8234.1
October 13, 2005
5 Page 
ISL90810
MSOP Packaging Information
8-Lead Plastic, MSOP, Package Code U8
0.012 + 0.006/-0.002
(0.30 + 0.15/-0.05)
0.118 ± 0.002
(3.00 ± 0.05)
0.0256 (0.65) Typ.
0.118 ± 0.002
(3.00 ± 0.05)
R 0.014 (0.36)
0.030 (0.76)
0.0216 (0.55)
0.036 (0.91)
0.032 (0.81)
7° Typ.
0.040 ± 0.002
(1.02 ± 0.05)
0.008 (0.20)
0.004 (0.10)
0.007 (0.18)
0.005 (0.13)
0.150 (3.81)
Ref.
0.193 (4.90)
Ref.
0.220"
0.0256" Typical
0.025"
Typical
NOTE:
1.ALL DIMENSIONS IN INCHES AND (MILLIMETERS)
FOOTPRINT
0.020"
Typical
8 Places
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
11 FN8234.1
October 13, 2005
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