ISL90840_06 Datasheet, PDF (1/13 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometers (XDCP)

ISL90840
®
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
November 14, 2006
FN8086.2
Low Noise, Low Power I²C^® Bus, 256 Taps
The ISL90840 integrates four digitally controlled
potentiometers (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
volatile 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. When powered on the ISL90810’s
wiper will always commence at mid-scale (128 tap position).
The DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Pinout
ISL90840
(20 LD TSSOP)
TOP VIEW
RH3 1
RL3 2
RW3 3
A2 4
SCL 5
SDA 6
GND 7
RW2 8
RL2 9
RH2 10
20 RW0
19 RL0
18 RH0
17 D.N.C.
16 VCC
15 A1
14 A0
13 RH1
12 RL1
11 RW1
Features
• Four potentiometers in one package
• 256 resistor taps - 0.4% resolution
• I²C serial interface
- Three address pins, up to eight devices/bus
- Write/Read capability
• Power-on preset to mid-scale (128 tap position)
• Wiper resistance: 70Ω typical @ 3.3V
• Standby current <5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ, 10kΩ total resistance
• 20 Ld TSSOP package
• Pb-free plus anneal available (RoHS compliant)
Ordering Information
PART NUMBER
PART MARKING
RESIST-ANCE
OPTION
(Ω)
TEMP
RANGE
(°C)
PACKAGE
PKG. DWG #
ISL90840UIV2027Z (Notes 1 and 2) ISL90840UI27Z
50k
-40 to +85
20 Ld TSSOP (Pb-free) MDP0044
ISL90840UIV2027
ISL90840UI27
50k
-40 to +85
20 Ld TSSOP
MDP0044
ISL90840UAV2027Z (Notes 1 and 2) ISL90840UA27Z
50k
-40 to +105 20 Ld TSSOP (Pb-free) MDP0044
ISL90840WIV2027Z (Notes 1 and 2) ISL90840WI27Z
10k
-40 to +85
20 Ld TSSOP (Pb-free) MDP0044
ISL90840WIV2027
ISL90840WI27
10k
-40 to +85
20 Ld TSSOP
MDP0044
ISL90840WAV2027Z (Notes 1 and 2) ISL90840WA27Z
10k
-40 to +105 20 Ld TSSOP (Pb-free) MDP0044
NOTES:
1. 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.
2. Add “T2” suffix for tape and reel.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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