Overview
The DAC8820ICDBR, produced by Texas Instruments, is a 16-bit, single-channel, multiplying digital-to-analog converter (DAC) designed for high-precision applications. This DAC operates from a single power supply ranging from +2.7 V to +5.5 V and features a low power consumption of 2 µA. It is packaged in a space-saving SSOP-28 package with an industry-standard pin configuration.
The DAC8820ICDBR uses an R-2R ladder architecture with the three most significant bits segmented, ensuring high linearity and accuracy. It supports 4-quadrant multiplying reference inputs, allowing for bipolar output currents. The device includes an internal feedback resistor (RFB) for temperature tracking and can achieve a full-scale current of 1.66 mA with a reference voltage of 10 V.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| Resolution | 16 | Bits | |||
| Relative Accuracy | DAC8820IB | ±2 | LSB | ||
| Relative Accuracy | DAC8820IC | ±1 | LSB | ||
| Differential Nonlinearity | ±0.5 | ±1 | LSB | ||
| Output Leakage Current | Data = 0000h, TA = +25°C | 5 | nA | ||
| Output Leakage Current | Data = 0000h, TA = TMAX | 10 | nA | ||
| Full-Scale Gain Error | Unipolar, data = FFFFh | ±16 | LSB | ||
| Settling Time | 0.5 | µs | |||
| Reference Bandwidth | 8 | MHz | |||
| Reference Input | –15 | +15 | V | ||
| Reference Dynamics | VREF = 6 VRMS, Data = FFFFh, f = 1 kHz | –105 | dB THD | ||
| Output Spot Noise Voltage | 10 | nV/√Hz | |||
| Operating Temperature Range | –40 | +85 | °C | ||
| Storage Temperature Range | –65 | +150 | °C |
Key Features
- 16-bit resolution with monotonic performance
- ±1 LSB integral nonlinearity (INL) and ±0.5 LSB differential nonlinearity (DNL)
- Low noise: 10 nV/√Hz output spot noise voltage
- Low power consumption: IDD = 2 µA
- Analog power supply: +2.7 V to +5.5 V
- Full-scale current: 1.66 mA with VREF = 10 V
- 4-quadrant multiplying reference input: –15 V to +15 V
- High-speed parallel interface
- Industry-standard SSOP-28 package
- Digitally controlled calibration
- Settling time: 0.5 µs
Applications
- Instrumentation
- Automatic Test Equipment
- Industrial Control PLCs
- Current-to-Voltage (I/V) Converters
- Programmable Current Sources
- Howland Current Pumps
- Bipolar Output Circuits
Q & A
- What is the resolution of the DAC8820ICDBR?
The DAC8820ICDBR has a 16-bit resolution.
- What is the typical output spot noise voltage of the DAC8820ICDBR?
The typical output spot noise voltage is 10 nV/√Hz.
- What is the operating temperature range of the DAC8820ICDBR?
The operating temperature range is –40°C to +85°C.
- What is the settling time of the DAC8820ICDBR?
The settling time is 0.5 µs.
- What is the reference bandwidth of the DAC8820ICDBR?
The reference bandwidth is 8 MHz.
- Can the DAC8820ICDBR operate in bipolar mode?
- What is the power consumption of the DAC8820ICDBR?
The power consumption is 2 µA.
- What package type is the DAC8820ICDBR available in?
The DAC8820ICDBR is available in an SSOP-28 package.
- What are some common applications of the DAC8820ICDBR?
- How does the DAC8820ICDBR achieve temperature tracking?
The DAC8820ICDBR achieves temperature tracking through an internal feedback resistor (RFB) combined with an external I/V converter op amp.
