Features: 256 Positions
10 k, 100 k, 1 M
Low Tempco 30 ppm/C
Internal Power ON Midscale Preset
Single-Supply 2.7 V to 5.5 V or Dual-Supply 2.7 V for AC or Bipolar Operation
I2 C Compatible Interface with Readback Capability
Extra Programmable Logic Outputs
Self-Contained Shutdown Feature
Extended Temperature Range 40 to +105
ApplicationMultimedia, Video, and Audio
Communications
Mechanical Potentiometer Replacement
Instrumentation: Gain, Offset Adjustment
Programmable Voltage-to-Current Conversion
Line Impedance MatchingPinout
Specifications
| # Channels |
1 |
| # Positions |
256 |
| Memory Type |
Volatile |
| Interface |
I2C |
| Resistor Values (kOhms) |
10, 100, 1M |
| Bipolar Voltage Range (V) |
±3V |
| Voltage Range (V) |
+5.5V |
| Supply Current |
0.1A |
| Temp. Range -40 °C to.. |
105Deg |
| Absolute Tempco (ppm/°C) |
30ppm/C |
| Package |
SOIC,TSSOP |
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V, +7 V
VSS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V , 7 V
VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
VA, VB, VW to GND . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD
AXBX, AXWX, BXWX at 10k in TSSOP-14 . . . ±5.0 mA*
AXBX, AXWX, BXWX at 100k in TSSOP-14 . . ±1.5 mA*
AXBX, AXWX, BXWX at 1 M in TSSOP-14 . . . ±0.5 mA*
Digital Input Voltage to GND . . . . . . . . . . . . . . . . . . 0 V, 7 V
Operating Temperature Range . . . . . . . . . . 40°C to +105°C
Thermal Resistance JA
SOIC (SOIC-14) . . . . . . . . . . . . . . . . . . . . . . . . . 158°C/W
SOIC (SOIC-16) . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
TSSOP-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W
TSSOP-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180°C/W
Maximum Junction Temperature (TJ max) . . . . . . . . . . 150°C
Package Power Dissipation PD = (TJ max TA)/JA
Storage Temperature . . . . . . . . . . . . . . . . . . 65°C to +150°C
Lead Temperatures
R-14, R-16A, RU-14, RU-16 (Vapor Phase, 60 sec) . 215°C
R-14, R-16A, RU-14, RU-16 (Infrared, 15 sec) . . . . . 220°C
DescriptionThe AD5241/AD5242 provide a single-/dual-channel, 256-position, digitally controlled variable resistor (VR) device. These 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.For AD5242, the fixed A-to-B terminal resistance of 10k,100 k, or 1 M has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30ppm/°C.
Wiper position programming defaults to midscale at system power ON. Once powered, the VR wiper position is programmed by an I2 C compatible 2-wire serial data interface. Both parts of AD5241 have available two extra programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.
The AD5241/AD5242 are available in surface-mount (SOIC-14/-16) packages and, for ultracompact solutions, TSSOP-14/-16 packages. All parts are guaranteed to operate over the extended temperature range of 40°C to +105°C. For 3-wire,SPI compatible interface applications, please refer to AD5200,AD5201, AD5203, AD5204, AD5206, AD5231*, AD5232*,AD5235*, AD7376, AD8400, AD8402, and AD8403 products.
AD5241 Data Sheet
