The MAX5318 is a high-accuracy, 18-bit, serial SPI input, buffered voltage output digital-to-analog converter (DAC) in a 4.4mm x 7.8mm, 24-lead TSSOP package. The device features ±2 LSB INL (max) accuracy and a ±1 LSB DNL (max) accuracy over the full temperature range of -40°C to +105°C.

The DAC voltage output is buffered resulting in a fast settling time of 3µs and a low offset and gain drift of ±0.5ppm/°C of FSR (typ). The force-sense output (OUT) maintains accuracy while driving loads with long lead lengths. Additionally, a separate AVSS supply, allows the output amplifier to go to 0V (GND) while maintaining full linearity performance.

The MAX5318 includes user-programmable digital gain and offset correction to enable easy system calibration.

At power-up, the device resets its outputs to zero or midscale. The wide 2.7V to 5.5V supply voltage range and integrated low-drift, low-noise reference buffer amplifier make for ease of use.

The MAX5318 features a 50MHz, 3-wire, SPI interface. The MAX5318 is available in a 24-lead TSSOP package and operates over the -40°C to +105°C temperature range.

Key Features

Ideal for ATE and High-Precision Instruments
- INL Accuracy Guaranteed with ±2 LSB (max) Over Temperature
Fast Settling Time (3µs) with 10kΩ || 100pF Load
Safe Power-Up-Reset to Zero or Midscale DAC Output (Pin-Selectable)
- Predetermined Output Device State in Power-Up and Reset in System Design
Negative Supply (AVSS) Option Allows Full INL and DNL Performance to 0V
SPI Interface Compatible with 1.8V to 5.5V Logic
High Integration Reduces Development Time and PCB Area
- Buffered Voltage Output Directly Drives 2kΩ Load Rail-to-Rail
- Integrated Reference Buffer
- No External Amplifiers Required
Small 4.4mm × 7.8mm, 24-Pin TSSOP Package

Applications/Uses

Automatic Test Equipment
Automatic Tuning and Calibration
Communication Systems
Data-Acquisition Systems
Gain and Offset Adjustment
Medical Imaging
Process Control and Servo Loops
Programmable Voltage and Current Sources
Test and Measurement Equipment

Key Specs

Part Number

Resolution
(bits)

Channels

Output Type

Reference

INL
(±LSB)

Interface

Supply Range
(V)

I_CC
(mA)

Settling Time
(µs)

Package/Pins

Oper. Temp.
(°C)

Budgetary
Price

max

min

max

typ

See Notes

MAX5318

Voltage- Buffered

Ext.

Serial - SPI

2.7

5.5

TSSOP/24

-40 to +105

$19.57 @1k

See All Precision DACs (276)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.