Overview
The DAC8734SPFBR is a high-accuracy, quad-channel, 16-bit digital-to-analog converter (DAC) produced by Texas Instruments. This device operates from supply voltages of ±5V to ±18V in bipolar output mode and from ±5V to +24V/-12V in unipolar mode. With a 5V reference, the DAC8734 can be configured to output ±10V, ±5V, 0V to 20V, or 0V to 10V. It provides 16-bit monotonicity, excellent integral nonlinearity (INL) error of ±1 LSB, low glitch, and low noise over the operating temperature range of -40°C to +105°C. The device is trimmed in production for very low zero and gain errors and implements a user-programmable system-level calibration function to achieve ±0.125 LSB zero error and ±1 LSB gain error.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 Bits | |
| Integral Nonlinearity (INL) Error | ±1 LSB | |
| Differential Nonlinearity (DNL) Error | ±1 LSB | |
| Bipolar Output Range | Up to ±16V | V |
| Unipolar Output Range | 0V to +20V | V |
| Zero Error (Before Calibration) | 4 LSB | |
| Zero Error (After Calibration) | ±0.125 LSB | |
| Gain Error (After Calibration) | ±1 LSB | |
| Noise | 60nV/√Hz | nV/√Hz |
| Settling Time | 6µs | µs |
| Configurable Gain | x2/x4 | |
| SPI Clock Rate | Up to 50MHz | MHz |
| Operating Temperature Range | -40°C to +105°C | °C |
| Packages | QFN-40 (6x6mm), TQFP-48 (7x7mm) |
Key Features
- Bipolar Output: Up to ±16V
- Unipolar Output: 0V to +20V
- 16-Bit Monotonic
- Low Zero and Gain Errors
- User-Programmable System-Level Calibration
- Low Noise: 60nV/√Hz
- Settling Time: 6µs
- Configurable Gain: x2/x4
- Analog Output Monitor
- Power-Down Mode
- SPI: Up to 50MHz, 1.8V/3V/5V Logic
- Daisy-Chain Mode
- Integrated Reference Buffers and Output Buffers
- Double-Buffered Interface Logic
Applications
- Automatic Test Equipment
- Instrumentation
- Industrial Process Control
- Communications
Q & A
- What is the resolution of the DAC8734?
The DAC8734 has a resolution of 16 bits.
- What are the output voltage ranges for the DAC8734?
The DAC8734 can output up to ±16V in bipolar mode and 0V to +20V in unipolar mode.
- What is the integral nonlinearity (INL) error of the DAC8734?
The INL error is ±1 LSB.
- How does the user-programmable calibration function improve accuracy?
The calibration function can achieve ±0.125 LSB zero error and ±1 LSB gain error.
- What is the settling time of the DAC8734?
The settling time is 6µs.
- What are the configurable gain options for the DAC8734?
The gain can be configured as x2 or x4.
- What is the maximum SPI clock rate for the DAC8734?
The SPI clock rate can go up to 50MHz.
- What are the operating temperature ranges for the DAC8734?
The operating temperature range is -40°C to +105°C.
- In what packages is the DAC8734 available?
The DAC8734 is available in QFN-40 (6x6mm) and TQFP-48 (7x7mm) packages.
- What are some common applications for the DAC8734?
Common applications include Automatic Test Equipment, Instrumentation, Industrial Process Control, and Communications.
