The AD5247 provides a compact, 2 mm × 2.1 mm, packaged solution for 128-position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or a variable resistor. Available in four different end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments.

The wiper settings are controllable through the I²C-compatible digital interface, which can also be used to read back the present wiper register control word. The 10 kΩ and 100 kΩ options each have three hard-coded slave address options available to allow users access to three of these devices on one I²C bus (see Data Sheet Table 8 for a full list of slave address locations).

The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch. Note the terms digital potentiometer, VR (variable resistor), and RDAC are used interchangeably in this document.

Operating from a 2.7 V to 5.5 V power supply and consuming 3 μA allows the AD5247 to be used in portable battery-operated applications.

Applications

• Mechanical potentiometer replacement in new designs
• Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
• RF amplifier-biasing
• LCD brightness and contrast adjustment
• Automotive electronics adjustment
• Gain control and offset adjustment

Data Sheet, Rev. B, 3/07

Part#	# Channels	# Positions	Memory Type	Interface	Resistor Values (kOhms)	Bipolar Voltage Range (V)	Voltage Range (V)	Supply Current (max)	Temp. Range -40 °C to..	Absolute Tempco (ppm/°C)	Price* (1000-4999)
ADN2860	3	512	Non-Volatile	I2C	25, 250	±2.75	-	10µA	85	15	$5.90
AD5228	1	32	Volatile	Pushbutton	10, 50, 100	-	+5.5	0.4µA	105	35	$0.34
AD5201	1	33	Volatile	SPI	10, 50	±3	+5.5	15µA	85	500	$0.49
AD5227	1	64	Volatile	Up/Down	10, 50, 100	-	+5.5	0.4µA	105	35	$0.36
AD5246	1	128	Volatile	I2C	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.44
AD5247	1	128	Volatile	I2C	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.44
AD5220	1	128	Volatile	Up/Down	10, 50, 100	-	+5.5	15µA	85	800	$0.89
AD7376	1	128	Volatile	SPI	10, 50, 100, 1M	±15	+28	10µA	85	35	$2.83
AD5160	1	256	Volatile	SPI	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.63
AD5165	1	256	Volatile	SPI	100	-	+5.5	0.05µA	125	35	$0.57
AD5245	1	256	Volatile	I2C	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.63
AD5161	1	256	Volatile	I2C, SPI	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.64
AD5241	1	256	Volatile	I2C	10, 100, 1M	±3	+5.5	0.1µA	105	30	$0.92
AD5200	1	256	Volatile	SPI	10, 50	±3	+5.5	15µA	85	500	$0.88
AD8400	1	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$1.12
AD5260	1	256	Volatile	SPI	20, 50, 200	±5	+15	0.1µA	85	35	$1.78
AD5280	1	256	Volatile	I2C	20, 50, 200	±5	+15	0.1µA	85	35	$1.78
AD5290	1	256	Volatile	SPI	10, 50, 100	±15	+30	10µA	105	35	$1.95
AD5222	2	128	Volatile	Up/Down	10, 50, 100, 1M	±3	+5.5	15µA	85	35	$0.79
AD5243	2	256	Volatile	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$0.99
AD5162	2	256	Volatile	SPI	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$0.99
AD5248	2	256	Volatile	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$0.99
AD5207	2	256	Volatile	SPI	10, 50, 100	±3	+5.5	40µA	125	500	$1.05
AD8402	2	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$1.66
AD5242	2	256	Volatile	I2C	10, 100, 1M	±3	+5.5	0.1µA	105	30	$1.25
AD5262	2	256	Volatile	SPI	20, 50, 200	±5	+15	0.1µA	85	35	$1.95
AD5282	2	256	Volatile	I2C	20, 50, 200	±5	+15	0.1µA	85	35	$1.95
AD5203	4	64	Volatile	SPI	10, 100	-	+5.5	0.01µA	85	700	$1.45
AD5204	4	256	Volatile	SPI	10, 50, 100	±3	+5.5	12µA	85	700	$1.50
AD8403	4	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$2.76
AD5263	4	256	Volatile	I2C, SPI	20, 50, 200	±5	+15	1µA	125	30	$2.55
AD5206	6	256	Volatile	SPI	10, 50, 100	±3	+5.5	12µA	85	700	$1.92
AD5273	1	64	One Time Programmable	I2C	1, 10, 50, 100	-	+5.5	0.1µA	105	300	$0.68
AD5171	1	64	One Time Programmable	I2C	5, 10, 50, 100	-	+5.5	4µA	125	35	$0.71
AD5170	1	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$0.99
AD5172	2	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.30
AD5173	2	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.30
AD5258	1	64	Non-Volatile	I2C	1, 10, 50, 100	-	+5.5	4µA	85	300	$0.58
AD5259	1	256	Non-Volatile	I2C	5, 10, 50, 100	n/a	+5.5	3µA	85	300	$0.89
AD5231	1	1,024	Non-Volatile	SPI	10, 50, 100	±3	+5.5	2.7µA	85	600	$1.95
AD5251	2	64	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	600	$1.95
AD5252	2	256	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$1.59
AD5232	2	256	Non-Volatile	SPI	10, 50, 100	±3	+5.5	3.5µA	85	300	$2.37
AD5235	2	1,024	Non-Volatile	SPI	25, 250	±3	+5.5	3.5µA	85	35	$3.48
ADN2850	2	1,024	Non-Volatile	SPI	25, 250	±3	+5.5	3.5µA	85	35	$3.48
AD5255	3	512	Non-Volatile	I2C	25, 250	±3	+5.5	3.5µA	85	35	$5.09
AD5233	4	64	Non-Volatile	SPI	10, 50, 100	±3	+5.5	3.5µA	85	600	$2.47
AD5253	4	64	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$2.46
AD5254	4	256	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$2.55

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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