MAX5704

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

Feature-Rich, 1-Channel DAC Family

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Overview

Single High-Accuracy DAC Channel
- 12-Bit Accuracy Without Adjustments
- ±1 LSB INL Buffered Voltage Output
- 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 V_DDIO
50MHz, 3-Wire, SPI/QSPI/MICROWIRE/DSP-Compatible Serial Interface
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

The MAX5703/MAX5704/MAX5705 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 MAX5703/MAX5704/MAX5705 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 MAX5703/MAX5704/MAX5705 have a 50MHz, 3-wire SPI/QSPI^™/MICROWIRE^®/DSP-compatible serial interface. 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 MAX5703/MAX5704/MAX5705 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 MAX5703/MAX5704/MAX5705 include a user-configurable active-low asynchronous input, 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 asynchronous active-low LDAC input is also included. This allows simultaneous output updates of multiple devices.

The MAX5703/MAX5704/MAX5705 are available in 10-pin TDFN/µMAX^® packages and are specified over the -40°C to +125°C temperature range.

Applications

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

Documentation

Data Sheet 1

MAX5703-MAX5705: Ultra-Small, Single-Channel, 8-/10-/12-Bit Buffered Output Voltage DACs with Internal Reference and SPI Interface Data Sheet (Rev.3) 12/23/2014

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Digital to Analog Converters (DACs) 6
MAX5715	PRODUCTION	Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface
MAX5714	PRODUCTION	Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface
MAX5713		Ultra-Small, Quad-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface
MAX5725	PRODUCTION	Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface

MAX5724		Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface
MAX5723		Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered Output DACs with Internal Reference and SPI Interface

Tools & Simulations

IBIS Model 2

Evaluation Kits

Evaluation Kit for the MAX5703, MAX5704, MAX5705A, MAX5705B, MAX5803, MAX5804, MAX5805A, and MAX5805B

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Features and Benefits

Wide 2.7V to 5.5V Input Supply Range
Demonstrates 6.3µs Settling Time of Buffered Output
High Precision with ±1 LSB INL
Selectable Output Termination: 1kΩ, 100kΩ, or High Impedance
Precision 10ppm (max) Selectable Internal References: 2.048V, 2.500V, and 4.096V
Demonstrates User-Supplied External Reference
Supports Entire Family of I²C and SPI 12-/10-/8-Bit DACs
Windows XP-, Windows Vista-, and Windows 7-Compatible Software
USB-Powered (Cable Included)
Fully Assembled and Tested with Proven PCB Layout

Product Details

The MAX5X05 evaluation kit (EV kit) demonstrates the MAX5705 and MAX5805 12-bit, single-channel, low-power DACs with internal reference and buffered voltage output. The MAX5705 and the MAX5805 come in a 10-pin µMAX^® package. The EV kit provides controls to change the DAC output, power operations, and references. The DAC ICs are controlled by an on-board MAXQ microcontroller, which provides two different interfaces: I²C and SPI. The EV kit features Windows XP^®-, Windows Vista^®-, and Windows^® 7-compatible software, which provides a simple graphical user interface (GUI) for exercising the MAX5705 and the MAX5805 features.

The EV kit comes with the MAX5705AAUB+ (SPI) and the MAX5805AAUB+ (I²C) installed. Contact the factory for samples of the pin-compatible MAX5703AUB+ (SPI, 8-bit), MAX5704AUB+ (SPI, 10-bit), MAX5705BAUB+ (SPI, 10-bit), MAX5803AUB+ (I²C, 8-bit), MAX5804AUB+ (I²C, 10-bit), MAX5805BAUB+ (I²C, 12-bit).