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Electronic calibration of equipment is reliable, cost effective, and flexible. To make design-in easier, Maxim offers DACs, digital potentiometers (pots), and voltage references specifically optimized for calibration applications. We have example circuits and application notes for electronic calibration.

Calibration Parts

A calibration part is an adjustable device with a predictable power-on-reset (POR) condition. Usually POR will read a value stored in nonvolatile (NV) memory in the device. Alternative devices that POR to zero, midscale, or full-scale can also be used in selected circuits. Maxim adds a C to signify calibration before a common acronym. Thus, CDPot is a calibration digital pot. CDAC is a calibration digital-to-analog converter. A CRef is a calibration voltage reference.

Digital Pots for Calibration

DACs for Calibration

VREFs for Calibration

Featured Technical Documents

Browse Popular Technical Documents:

Featured Products

MAX5725 Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface

The MAX5723/MAX5724/MAX5725 8-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analo...

Eight High-Accuracy DAC Channels
- 12-Bit Accuracy Without Adjustment
- ±1 LSB INL Buffered Voltage Output
- Guaranteed Monotonic Over All Operating Conditions
- Independent Mode Settings for Each DAC
Three Precision Selectable Internal References
- 2.048V, 2.500V, or 4.096V
Internal Output Buffer
- Rail-to-Rail Operation with External Reference
- 4.5µs Settling Time
- Outputs Directly Drive 2kΩ Loads
Small 6.5mm × 4.4mm 20-Pin TSSOP or Ultra-Small 2.5mm × 2.3mm 20-Bump WLP Package
Wide 2.7V to 5.5V Supply Range
Separate 1.8V to 5.5V V_DDIO Power-Supply Input
Fast 50MHz 4-Wire SPI/QSPI/MICROWIRE/DSP-Compatible Serial Interface
Programmable Interface Watchdog Timer
Pin-Selectable Power-On-Reset to Zero-Scale or Midscale DAC Output
Active-Low LDAC and Active-Low CLR for Asynchronous DAC Control
Three Selectable Power-Down Output Impedances
- 1kΩ, 100kΩ, or High Impedance

Printable Data Sheet Evaluation Kit

DS4305 Electronically Programmable Voltage Reference

The DS4305 is a nonvolatile (NV) electronically programmable voltage reference. The reference vo...

Precise Electronically Adjustable Voltage Reference
Enables Automated Factory Trimming of Devices Needing Voltage Adjustment
Can be Adjusted to Within ±1.5mV
Wide Adjustable Output Voltage Range Within 300mV of the Supply Rails
Low Temperature Coefficient
±1mA of Output-Current Drive
NV Memory Stores the Voltage Indefinitely
Output Short-Circuit Protection
Low Cost
Low Power Consumption
4.0V to 5.5V Single-Supply Operation
Small 5-Lead SOT23 Package
-40°C to +125°C Temperature Operation
DS4305K Evaluation Kit is Available

Printable Data Sheet

DS3901 Triple, 8-Bit NV Variable Resistor with Dual Settings and User EEPROM

The DS3901 is a triple, 8-bit nonvolatile (NV) variable resistor. Each of the resistors has two ...

Three 256-Position Linear Digital Resistors
Full-Scale Resistances 50kΩ, 30kΩ, 20kΩ
Dual NV Settings for Each Resistor
Low Temperature-Coefficient Resistors
I²C Serial Interface
Wide Operating Voltage (2.4V to 5.5V)
Two-Level Password Write Protection
232 Bytes of User EEPROM
Programmable Slave Address
-40°C to +95°C Operating Temperature Range

Printable Data Sheet

MAX5496 10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers

The MAX5494–MAX5499 10-bit (1024-tap), dual, nonvolatile, linear-taper, programmable voltage-div...

Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up
16-Pin, 5mm x 5mm x 0.8mm TQFN Package
35ppm/°C End-to-End Resistance Temperature Coefficient
5ppm/°C Ratiometric Temperature Coefficient
10kΩ and 50kΩ End-to-End Resistor Values
3-Wire SPI-Compatible Serial Interface
Reliability (T_A = +85°C)
- 50,000 Wiper Store Cycles
- 50 Years Wiper Data Retention
1.5µA (max) Standby Current
Single +2.7V to +5.25V Supply Operation
Dual ±2.5V Supply Operation

Printable Data Sheet Evaluation Kit

MAX6220 Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage Reference

The MAX6220 is a low-noise, precision voltage reference with extremely low 20ppm/°C temperature ...

Low 20ppm/°C Temperature Coefficient over -40°C to +125°C Range
Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
±0.1% Initial Accuracy
±15mA Output Source and Sink Current
8V to 40V Input Voltage Range
Optional Noise Reduction and Voltage Trim
Excellent Transient Response
Low 20ppm/1000hr Long-Term Stability
Stable for All Capacitive Loads

Printable Data Sheet

MAX5725 Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface

The MAX5723/MAX5724/MAX5725 8-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analo...

Eight High-Accuracy DAC Channels
- 12-Bit Accuracy Without Adjustment
- ±1 LSB INL Buffered Voltage Output
- Guaranteed Monotonic Over All Operating Conditions
- Independent Mode Settings for Each DAC
Three Precision Selectable Internal References
- 2.048V, 2.500V, or 4.096V
Internal Output Buffer
- Rail-to-Rail Operation with External Reference
- 4.5µs Settling Time
- Outputs Directly Drive 2kΩ Loads
Small 6.5mm × 4.4mm 20-Pin TSSOP or Ultra-Small 2.5mm × 2.3mm 20-Bump WLP Package
Wide 2.7V to 5.5V Supply Range
Separate 1.8V to 5.5V V_DDIO Power-Supply Input
Fast 50MHz 4-Wire SPI/QSPI/MICROWIRE/DSP-Compatible Serial Interface
Programmable Interface Watchdog Timer
Pin-Selectable Power-On-Reset to Zero-Scale or Midscale DAC Output
Active-Low LDAC and Active-Low CLR for Asynchronous DAC Control
Three Selectable Power-Down Output Impedances
- 1kΩ, 100kΩ, or High Impedance

Printable Data Sheet Evaluation Kit

DS4305 Electronically Programmable Voltage Reference

The DS4305 is a nonvolatile (NV) electronically programmable voltage reference. The reference vo...

Precise Electronically Adjustable Voltage Reference
Enables Automated Factory Trimming of Devices Needing Voltage Adjustment
Can be Adjusted to Within ±1.5mV
Wide Adjustable Output Voltage Range Within 300mV of the Supply Rails
Low Temperature Coefficient
±1mA of Output-Current Drive
NV Memory Stores the Voltage Indefinitely
Output Short-Circuit Protection
Low Cost
Low Power Consumption
4.0V to 5.5V Single-Supply Operation
Small 5-Lead SOT23 Package
-40°C to +125°C Temperature Operation
DS4305K Evaluation Kit is Available

Printable Data Sheet

DS3901 Triple, 8-Bit NV Variable Resistor with Dual Settings and User EEPROM

The DS3901 is a triple, 8-bit nonvolatile (NV) variable resistor. Each of the resistors has two ...

Three 256-Position Linear Digital Resistors
Full-Scale Resistances 50kΩ, 30kΩ, 20kΩ
Dual NV Settings for Each Resistor
Low Temperature-Coefficient Resistors
I²C Serial Interface
Wide Operating Voltage (2.4V to 5.5V)
Two-Level Password Write Protection
232 Bytes of User EEPROM
Programmable Slave Address
-40°C to +95°C Operating Temperature Range

Printable Data Sheet

MAX5496 10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers

The MAX5494–MAX5499 10-bit (1024-tap), dual, nonvolatile, linear-taper, programmable voltage-div...

Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up
16-Pin, 5mm x 5mm x 0.8mm TQFN Package
35ppm/°C End-to-End Resistance Temperature Coefficient
5ppm/°C Ratiometric Temperature Coefficient
10kΩ and 50kΩ End-to-End Resistor Values
3-Wire SPI-Compatible Serial Interface
Reliability (T_A = +85°C)
- 50,000 Wiper Store Cycles
- 50 Years Wiper Data Retention
1.5µA (max) Standby Current
Single +2.7V to +5.25V Supply Operation
Dual ±2.5V Supply Operation

Printable Data Sheet Evaluation Kit

MAX6220 Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage Reference

The MAX6220 is a low-noise, precision voltage reference with extremely low 20ppm/°C temperature ...

Low 20ppm/°C Temperature Coefficient over -40°C to +125°C Range
Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
±0.1% Initial Accuracy
±15mA Output Source and Sink Current
8V to 40V Input Voltage Range
Optional Noise Reduction and Voltage Trim
Excellent Transient Response
Low 20ppm/1000hr Long-Term Stability
Stable for All Capacitive Loads

Printable Data Sheet

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