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Data Converters 
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Digital-to-Analog Converters
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MAX5805
Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and I2C Interface
Feature-Rich, 1-Channel DAC Family
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Key Features
Applications/Uses
Parametric specs for Precision DACs (< 1MHz)
| Resolution (bits) | 12 |
| # Channels | 1 |
| Interface | Serial - I2C |
| Output Type | Voltage- Buffered |
| Reference | Int./Ext. |
| INL (±LSB) (max) | 1 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 5.5 |
| ICC (mA) (max) | 0.19 |
| Settling Time (µs) (typ) | 6.3 |
| Package/Pins | TDFN/10 UMAX/10 |
| Oper. Temp. (°C) | -40 to +125 |
| Budgetary Price (See Notes) | 1.26 |
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Parameters
Parametric specs for Precision DACs (< 1MHz)
| Resolution (bits) | 12 |
| # Channels | 1 |
| Interface | Serial - I2C |
| Output Type | Voltage- Buffered |
| Reference | Int./Ext. |
| INL (±LSB) (max) | 1 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 5.5 |
| ICC (mA) (max) | 0.19 |
| Settling Time (µs) (typ) | 6.3 |
| Package/Pins | TDFN/10 UMAX/10 |
| Oper. Temp. (°C) | -40 to +125 |
| Budgetary Price (See Notes) | 1.26 |
Key Features
- Single High-Accuracy DAC Channel
- 12-Bit Accuracy Without Adjustments
- ±1 LSB INL Buffered Voltage Output
- Guaranteed Monotonic Over All Operating Conditions
- Three Precision Selectable Internal References
- 2.048V, 2.500V, or 4.096V
- Internal Output Buffer
- Rail-to-Rail Operation with External Reference
- 6.3µs Settling Time
- Output Directly Drives 2kΩ Loads
- Small, 10-Pin, 2mm x 3mm TDFN and 3mm x 5mm µMAX Packages
- Wide 2.7V to 5.5V Supply Range
- Flexible 1.8V to 5.5V VDDIO
- Fast 400kHz, I2C-Compatible, 2-Wire Serial Interface with Readback
- Power-On-Reset to Zero-Scale DAC Output
- User-Configurable Asynchronous I/O Functions: Active-Low CLR, Active-Low LDAC, Active-Low GATE
- Three Software-Selectable Power-Down Output Impedances: 1kΩ, 100kΩ, or High Impedance
- Low 155µA DAC Supply Current at 3V
Applications/Uses
- Automatic Tuning and Optical Control
- Data Acquisition
- Gain and Offset Adjustment
- Portable Instrumentation
- Power Amplifier Control and Biasing
- Process Control and Servo Loops
- Programmable Voltage and Current Sources
Description
The MAX5803/MAX5804/MAX5805 single-channel, low-power, 8-/10-/12-bit, voltage-output digital-to-analog converters (DACs) include output buffers and an internal reference that is selectable to be 2.048V, 2.500V, or 4.096V. The MAX5803/MAX5804/MAX5805 accept a wide supply voltage range of 2.7V to 5.5V with extremely low power (< 1mW) consumption to accommodate most low-voltage applications. A precision external reference input allows rail-to-rail operation and presents a 100kΩ (typ) load to an external reference.
The MAX5803/MAX5804/MAX5805 have an I2C-compatible, 2-wire interface that operates at clock rates up to 400kHz. The DAC output is buffered and has a low supply current of 155µA (typical at 3V) and a low offset error of ±0.5mV (typical). On power-up, the MAX5803/MAX5804/MAX5805 reset the DAC outputs to zero, providing additional safety for applications that drive valves or other transducers which need to be off on power-up. The internal reference is initially powered down to allow use of an external reference.
The MAX5803/MAX5804/MAX5805 include a user-configurable active-low asynchronous input, active-low AUX for additional flexibility. This input can be programmed to asynchronously clear (active-low CLR) or temporarily gate (active-low GATE) the DAC output to a user-programmable value. A dedicated active-low asynchronous LDAC input is also included. This allows simultaneous output updates of multiple devices.
The MAX5803/MAX5804/MAX5805 are available in 10-pin TDFN/µMAX® packages and are specified over the -40°C to +125°C temperature range.
The MAX5803/MAX5804/MAX5805 have an I2C-compatible, 2-wire interface that operates at clock rates up to 400kHz. The DAC output is buffered and has a low supply current of 155µA (typical at 3V) and a low offset error of ±0.5mV (typical). On power-up, the MAX5803/MAX5804/MAX5805 reset the DAC outputs to zero, providing additional safety for applications that drive valves or other transducers which need to be off on power-up. The internal reference is initially powered down to allow use of an external reference.
The MAX5803/MAX5804/MAX5805 include a user-configurable active-low asynchronous input, active-low AUX for additional flexibility. This input can be programmed to asynchronously clear (active-low CLR) or temporarily gate (active-low GATE) the DAC output to a user-programmable value. A dedicated active-low asynchronous LDAC input is also included. This allows simultaneous output updates of multiple devices.
The MAX5803/MAX5804/MAX5805 are available in 10-pin TDFN/µMAX® packages and are specified over the -40°C to +125°C temperature range.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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