AS1506BTDT100 austriamicrosystems, AS1506BTDT100 Datasheet - Page 14

• Manufacturer Part Number: AS1506BTDT100
• Description: IC, DIGITAL POT 100KOHM, 256, SGL TDFN-8
• Manufacturer: austriamicrosystems

Specifications of AS1506BTDT100

• End To End Resistance: 100kohm
• Track Taper: Linear
• No. Of Steps: 256
• Supply Voltage Range: 2.7V To 5.5V
• Control Interface: Serial, SPI
• No. Of Pots: Single
• Memory Type: EEPROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS1506
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Positive LCD Bias Control
The device can be used in applications where a voltage-divider or variable resistor is used to make an adjustable, pos-
itive LCD-bias voltage, such as for the AS1120 LCD Driver. The op amp provides buffering and gain to the resistor-
divider network made by the potentiometer
Figure 26. Positive LCD Bias Control using a Voltage Divider
Figure 27. Positive LCD Bias Control using a Variable Resistor
Adjustable Voltage Reference
Figure 28
ages of external voltage references, supervisory reset thresholds, or LED brightness control can be independently
adjusted by changing the wiper position of the AS1506.
Figure 28. Adjustable Voltage Reference Circuit – V
www.austriamicrosystems.com
shows the device used as the feedback resistor in an adjustable voltage-reference application. Output volt-
AS1506
AS1506
HIGH
LOW
HIGH
LOW
(Figure
5V
5V
V
IN
5V
OUT
ADJ
WIPER
26) or to a fixed resistor and a variable resistor
WIPER
OUT
Revision 1.01
WIPER
= 1.23V(50kΩ/R
HIGH
LOW
+
–
30V
+
–
30V
AS1506
2
V
(kΩ)
OUTREF
V
OUT
V
OUT
(Figure
27).
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