Mechanical potentiometer replacement Instrumentation: gain, offset adjustment Programmable voltage-to-current conversion Programmable filters, delays, time constants Programmable power supply Sensor calibration
The AD5233 is a quad-channel nonvolatile memory,* digitally controlled potentiometer** with a 64-step resolution. The device performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid-state reliability, and remote controllability. The AD5233 has versatile program-ming using a serial peripheral interface (SPI) for 16 modes of operation and adjustment, including scratchpad programming, memory storing and restoring, increment/decrement, ±6 dB/step log taper adjustment, wiper setting readback, and extra EEMEM for user-defined information such as memory data for other components, look-up tables, or system identification information.
In the scratchpad programming mode, a specific setting can be programmed directly to the RDAC register, which sets the resistance between Terminal W to Terminal A and Terminal W to Terminal B. This setting can be stored into the EEMEM and is transferred automatically to the RDAC register during system power-on.
The EEMEM content can be restored dynamically or through external PR strobing. A WP function protects EEMEM contents. To simplify the programming, independent or simultaneous increment or decrement commands can be used to move the RDAC wiper up or down, one step at a time. For logarithmic ±6 dB step changes in wiper settings, the left or right bit shift command can be used to double or halve the RDAC wiper setting.
The AD5233 is available in a thin 24-lead TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +85°C.
Applications
* The terms nonvolatile memory and EEMEM are used interchangeably. ** The terms digital potentiometer and RDAC are used interchangeably.
Data Sheet, Rev. B, 5/08
Features and Benefits
| Digital to Analog Converters |
| Document | note |
| AD5233: Nonvolatile Memory, Quad 64-Position Potentiometers Data Sheet (Rev. B) | PDF 1082 kB |
| Document | note |
| UG-350: Evaluation Board for the AD5233 Digital Potentiometer | PDF 680 kB |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD5233BRUZ10 Production | 24 ld TSSOP | OTH 62 | -40 to 85C | 3.42 | 3.05 | Y |
| AD5233BRUZ10-R7 Production | 24 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 3.05 | Y |
| AD5233BRUZ100 Last Time Buy | 24 ld TSSOP | OTH 62 | -40 to 85C | 3.42 | 3.05 | Y |
| AD5233BRUZ100-R7 Last Time Buy | 24 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 3.05 | Y |
| AD5233BRUZ50 Production | 24 ld TSSOP | OTH 62 | -40 to 85C | 3.42 | 3.05 | Y |
| AD5233BRUZ50-R7 Production | 24 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 3.05 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-AD5233SDZ | Evaluation Board | 59 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
