The AD5280/AD5282 are single-channel and dual-channel, 256-position, digitally controlled variable resistors (VRs)^*. The devices perform the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. Each VR offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 parts per million/ degrees centigrade (ppm/°C). Another key feature is that the parts can operate up to +15 V or ±5 V.

Wiper position programming defaults to midscale at system power-on. When powered, the VR wiper position is programmed by an I²C-compatible, 2-wire serial data interface. The AD5280/ AD5282 feature sleep mode programmability. This allows any level of preset in power-up and is an alternative to a costly EEPROM solution. Both parts have additional programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.

The AD5280/AD5282 are available in thin, surface-mounted 14-lead TSSOP and 16-lead TSSOP. All parts are guaranteed to operate over the extended industrial temperature range of −40°C to +85°C. For 3-wire SPI-compatible interface applications, see the AD5260/AD5262 product information on www.analog.com.

Applications

Multimedia, video, and audio

Communications

Mechanical potentiometer replacement

Instrumentation: gain, offset adjustment

Programmable voltage source

Programmable current source

Line impedance matching

^* The terms digital potentiometer, VR, and RDAC are used interchangeably.

Data Sheet, Rev. B, 8/07

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	$5.97
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	$0.50
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	$0.45
AD5247	1	128	Volatile	I2C	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.45
AD5220	1	128	Volatile	Up/Down	10, 50, 100	-	+5.5	15µA	85	800	$0.90
AD7376	1	128	Volatile	SPI	10, 50, 100, 1M	±15	+28	10µA	85	35	$2.86
AD5160	1	256	Volatile	SPI	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.64
AD5165	1	256	Volatile	SPI	100	-	+5.5	0.05µA	125	35	$0.58
AD5245	1	256	Volatile	I2C	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.64
AD5161	1	256	Volatile	I2C, SPI	5, 10, 50, 100	-	+5.5	3µA	125	35	$0.65
AD5241	1	256	Volatile	I2C	10, 100, 1M	±3	+5.5	0.1µA	105	30	$0.93
AD5200	1	256	Volatile	SPI	10, 50	±3	+5.5	15µA	85	500	$0.89
AD8400	1	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$1.13
AD5260	1	256	Volatile	SPI	20, 50, 200	±5	+15	0.1µA	85	35	$1.80
AD5280	1	256	Volatile	I2C	20, 50, 200	±5	+15	0.1µA	85	35	$1.80
AD5290	1	256	Volatile	SPI	10, 50, 100	±15	+30	10µA	105	35	$1.97
AD5222	2	128	Volatile	Up/Down	10, 50, 100, 1M	±3	+5.5	15µA	85	35	$0.80
AD5243	2	256	Volatile	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.00
AD5162	2	256	Volatile	SPI	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.00
AD5248	2	256	Volatile	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.00
AD5207	2	256	Volatile	SPI	10, 50, 100	±3	+5.5	40µA	125	500	$1.06
AD8402	2	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$1.68
AD5242	2	256	Volatile	I2C	10, 100, 1M	±3	+5.5	0.1µA	105	30	$1.27
AD5262	2	256	Volatile	SPI	20, 50, 200	±5	+15	0.1µA	85	35	$1.97
AD5282	2	256	Volatile	I2C	20, 50, 200	±5	+15	0.1µA	85	35	$1.97
AD5203	4	64	Volatile	SPI	10, 100	-	+5.5	0.01µA	85	700	$1.47
AD5204	4	256	Volatile	SPI	10, 50, 100	±3	+5.5	12µA	85	700	$1.52
AD8403	4	256	Volatile	SPI	1, 10, 50, 100	-	+5.5	0.01µA	125	500	$2.79
AD5263	4	256	Volatile	I2C, SPI	20, 50, 200	±5	+15	1µA	125	30	$2.58
AD5206	6	256	Volatile	SPI	10, 50, 100	±3	+5.5	12µA	85	700	$1.94
AD5273	1	64	One Time Programmable	I2C	1, 10, 50, 100	-	+5.5	0.1µA	105	300	$0.69
AD5171	1	64	One Time Programmable	I2C	5, 10, 50, 100	-	+5.5	4µA	125	35	$0.72
AD5170	1	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.00
AD5172	2	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.32
AD5173	2	256	One Time Programmable	I2C	2.5, 10, 50, 100	-	+5.5	3.5µA	125	35	$1.32
AD5258	1	64	Non-Volatile	I2C	1, 10, 50, 100	-	+5.5	4µA	85	300	$0.59
AD5259	1	256	Non-Volatile	I2C	5, 10, 50, 100	n/a	+5.5	3µA	85	300	$0.90
AD5231	1	1,024	Non-Volatile	SPI	10, 50, 100	±3	+5.5	2.7µA	85	600	$1.97
AD5251	2	64	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	600	$1.97
AD5252	2	256	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$1.61
AD5232	2	256	Non-Volatile	SPI	10, 50, 100	±3	+5.5	3.5µA	85	300	$2.40
AD5235	2	1,024	Non-Volatile	SPI	25, 250	±3	+5.5	3.5µA	85	35	$3.52
ADN2850	2	1,024	Non-Volatile	SPI	25, 250	±3	+5.5	3.5µA	85	35	$3.52
AD5255	3	512	Non-Volatile	I2C	25, 250	±3	+5.5	3.5µA	85	35	$5.15
AD5233	4	64	Non-Volatile	SPI	10, 50, 100	±3	+5.5	3.5µA	85	600	$2.50
AD5253	4	64	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$2.49
AD5254	4	256	Non-Volatile	I2C	1, 10, 50, 100	±3	+5.5	3µA	85	300	$2.58

* 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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