Table of Contents Section 1 – New and Featured Products
Table of Contents Section 1 – New and Featured Products
Table of Contents Section 1 – New and Featured Products
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Signal Conditioning/Calibration <strong>and</strong> Control <strong>Products</strong><br />
®<br />
X93154 Digitally Controlled Potentiometer (XDCP )<br />
Product Highlights<br />
• 32-tap<br />
• Non-volatile Digital Potentiometer<br />
• Low Power<br />
Key Features<br />
• Solid State Potentiometer<br />
• Up/Down Interface<br />
• Non-Volatile Storage <strong>of</strong> Wiper Positions<br />
• Power on Recall Loads Saved Wiper Position on Power-Up<br />
• V CC = 2.7V to 3.3V Operation<br />
• R TOTAL = 50kΩ<br />
• Packages<br />
— 8-lead MSOP, FCP (Flip-Chip Package)<br />
Description<br />
The Xicor X93154 is a digitally controlled potentiometer (XDCP).<br />
The device consists <strong>of</strong> a resistor array, wiper switches, a control<br />
section, <strong>and</strong> non-volatile memory. The wiper position is<br />
controlled by an Up/Down interface.<br />
The potentiometer is implemented by a resistor array composed<br />
<strong>of</strong> 31 resistive elements <strong>and</strong> a wiper switching network. The<br />
position <strong>of</strong> the wiper element is controlled by the CS, U/D, <strong>and</strong><br />
INC inputs. The position <strong>of</strong> the wiper can be stored in nonvolatile<br />
memory <strong>and</strong> then be recalled upon a subsequent powerup<br />
operation.<br />
The device is connected as a two-terminal variable resistor <strong>and</strong><br />
can be used in a wide variety <strong>of</strong> applications including:<br />
<strong>New</strong> & <strong>Featured</strong> <strong>Products</strong><br />
Benefits<br />
• Wide Range <strong>of</strong> Sizes for Versatile Small Form Factor<br />
• Low Power<br />
• Digital Programmability<br />
• Set <strong>and</strong> Forget Calibration<br />
• Reliability<br />
• Non-Volatile Storage <strong>of</strong> Wiper Positions<br />
• Bias <strong>and</strong> Gain Control<br />
• LCD Contrast Adjustment<br />
Pin Configuration<br />
INC 1<br />
U/D 2<br />
R H 3<br />
V SS 4<br />
MSOP<br />
X93154<br />
8<br />
7<br />
6<br />
5<br />
V CC<br />
CS<br />
R L<br />
NC*<br />
*NC can be left unconnected, or connected<br />
to any voltage between V SS <strong>and</strong> V CC .<br />
Block Diagram<br />
Also available in Flip-Chip<br />
V CC (Supply Voltage)<br />
30K<br />
U/D<br />
INC<br />
CS<br />
5-Bit<br />
Up/Down<br />
Counter<br />
31<br />
30<br />
R H<br />
29<br />
Up/Down<br />
(U/D)<br />
Increment<br />
(INC)<br />
Device Select<br />
(CS)<br />
Control<br />
<strong>and</strong><br />
Memory<br />
R H<br />
5-Bit<br />
Nonvolatile<br />
Memory<br />
Store <strong>and</strong><br />
Control Recall<br />
Circuitry<br />
28<br />
One <strong>of</strong><br />
Thirty Two<br />
Decoder<br />
2<br />
Transfer<br />
Gates<br />
Resistor<br />
Array<br />
R L<br />
1<br />
V CC<br />
0<br />
V SS (Ground)<br />
V SS<br />
R L<br />
General<br />
Detailed<br />
See Product Family Tree<br />
on page 2-1<br />
* for ordering information refer to page 1-45<br />
www.xicor.com<br />
1<strong>–</strong>37
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