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Hello, Please ask a question about CAT5261 Datasheet
# Example questions:
➢ What does 'lsb' represent in the context of absolute and relative linearity measurements?
➢ What is the typical resistance range for the potentiometer, considering the -00 and -50 options?
➢ What is the maximum permissible temperature coefficient (tcr) for the potentiometer resistance (rpot)?
1. Absolute Maximum Ratings
️· Voltage on any RH or RL Pin: GND to VCC (relative to ground).
️· Potentiometer Power Rating: 50 mW per potentiometer (at 25°C).
️· Wiper Current (IW): +3 mA
️· Wiper Resistance (RW): (Varies with VCC)
- @ VCC = 3V: 200-300 Ω
- @ VCC = 5V: 100-150 Ω
2. Recommended Operating Conditions
️· VCC (Supply Voltage): Not explicitly stated, but implied by RW values (3V-5V range is suggested).
️· Temperature: Not explicitly stated, but relevant to TCR parameters.
3. Electrical Characteristics (Potentiometer)
️· Potentiometer Resistance (RPOT):
- -00 Version: 100 kΩ
- -50 Version: 50 kΩ
️· Potentiometer Resistance Tolerance: +20%
️· RPOT Matching: 1%
️· Voltage on any RH or RL Pin: GND to VCC (relative to ground).
️· Noise: Not defined in a quantifiable way (nV/Hz).
️· Resolution: 0.4%
️· Absolute Linearity: +1 LSB (Least Significant Bit)
️· Relative Linearity: +0.2 LSB
️· TCRPOT (Temperature Coefficient of RPOT): +300 ppm/°C
️· TCRATIO (Ratiometric Temperature Coefficient): +20 ppm/°C
️· Potentiometer Capacitances: CH/CL/CW = 10/10/25 pF
️· Frequency Response: 0.4 MHz (at RPOT = 50 kΩ)
4. Notes & Definitions (Important to Understand the Specs)
️· "Parameter tested initially and after design/process change": Some parameters are checked at the beginning and whenever the design or manufacturing process is altered.
️· Absolute Linearity: Measures how close the actual wiper voltage is to the *expected* voltage based on wiper position.
️· Relative Linearity: Measures the change in voltage between successive wiper positions. It's about the accuracy of the step size.
️· LSB (Least Significant Bit): Defined as RTOT / 255 or (RH - RL) / 255 for a single potentiometer. Crucial for understanding linearity specs.
️· ppm/°C (Parts per million per degree Celsius): A unit measuring temperature sensitivity.
1. Absolute Maximum Ratings
️· Voltage on any RH or RL Pin: GND to VCC (relative to ground).
️· Potentiometer Power Rating: 50 mW per potentiometer (at 25°C).
️· Wiper Current (IW): +3 mA
️· Wiper Resistance (RW): (Varies with VCC)
- @ VCC = 3V: 200-300 Ω
- @ VCC = 5V: 100-150 Ω
2. Recommended Operating Conditions
️· VCC (Supply Voltage): Not explicitly stated, but implied by RW values (3V-5V range is suggested).
️· Temperature: Not explicitly stated, but relevant to TCR parameters.
3. Electrical Characteristics (Potentiometer)
️· Potentiometer Resistance (RPOT):
- -00 Version: 100 kΩ
- -50 Version: 50 kΩ
️· Potentiometer Resistance Tolerance: +20%
️· RPOT Matching: 1%
️· Voltage on any RH or RL Pin: GND to VCC (relative to ground).
️· Noise: Not defined in a quantifiable way (nV/Hz).
️· Resolution: 0.4%
️· Absolute Linearity: +1 LSB (Least Significant Bit)
️· Relative Linearity: +0.2 LSB
️· TCRPOT (Temperature Coefficient of RPOT): +300 ppm/°C
️· TCRATIO (Ratiometric Temperature Coefficient): +20 ppm/°C
️· Potentiometer Capacitances: CH/CL/CW = 10/10/25 pF
️· Frequency Response: 0.4 MHz (at RPOT = 50 kΩ)
4. Notes & Definitions (Important to Understand the Specs)
️· "Parameter tested initially and after design/process change": Some parameters are checked at the beginning and whenever the design or manufacturing process is altered.
️· Absolute Linearity: Measures how close the actual wiper voltage is to the *expected* voltage based on wiper position.
️· Relative Linearity: Measures the change in voltage between successive wiper positions. It's about the accuracy of the step size.
️· LSB (Least Significant Bit): Defined as RTOT / 255 or (RH - RL) / 255 for a single potentiometer. Crucial for understanding linearity specs.
️· ppm/°C (Parts per million per degree Celsius): A unit measuring temperature sensitivity.
| Part No. | CAT5261 |
| Manufacturer | CATALYST |
| Size | 95 Kbytes |
| Pages | 15 pages |
| Description | Dual Digitally Programmable Potentiometer |
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