Overview
The AD7804BRZ-REEL is a quad 10-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD7804 series, which includes devices with serial load capabilities. It operates from a +3.3 V to +5 V power supply and incorporates an on-chip reference, making it versatile for various applications. The AD7804 features double-buffered data inputs, allowing all analog outputs to be simultaneously updated using the asynchronous LDAC input.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Resolution | 10 | Bits | |
| Relative Accuracy | ±3 | LSB max | |
| Gain Error | ±3 | % FSR max | |
| Bias Offset Error | –80/+40 | mV max | |
| Zero-Scale Error | mV max | DAC Code = 000H for Offset Binary, 200H for Twos Complement Coding | |
| Input Leakage Current | ±10 | µA max | |
| Input Capacitance | 8 | pF max | |
| Power Supply Voltage | +3.3 V to +5 V (±10%) | ||
| Normal Mode Current | 18 | mA max | VIH = VDD, VIL = DGND |
| System Standby Mode Current | 250 | µA max | VIH = VDD, VIL = DGND |
| Power-Down Mode Current | 1 | µA max | @ +25°C |
| Conversion Rate | 667 | ksps | |
| Interface | SPI, Serial |
Key Features
- Quad 10-bit digital-to-analog converters with serial load capabilities
- Operates from +3.3 V to +5 V power supply
- On-chip reference and on-chip control registers (system control register and channel control registers)
- Double-buffered data inputs allowing simultaneous update of all analog outputs using the asynchronous LDAC input
- Power-down mode and system standby mode for low power consumption
- All CMOS construction
- On-chip Sub DAC for shifting the transfer function around the VBIAS point
Applications
- Optical Disk Drives
- Instrumentation and Communication Systems
- Process Control and Voltage Setpoint Control
- Trim Potentiometer Replacement
- Automatic Calibration
Q & A
- What is the resolution of the AD7804BRZ-REEL?
The AD7804BRZ-REEL has a resolution of 10 bits. - What is the operating voltage range of the AD7804BRZ-REEL?
The AD7804BRZ-REEL operates from +3.3 V to +5 V (±10%). - What type of interface does the AD7804BRZ-REEL use?
The AD7804BRZ-REEL uses an SPI, serial interface. - What is the conversion rate of the AD7804BRZ-REEL?
The conversion rate of the AD7804BRZ-REEL is 667 ksps. - Does the AD7804BRZ-REEL have power-saving modes?
Yes, the AD7804BRZ-REEL has power-down and system standby modes for low power consumption. - What is the purpose of the on-chip Sub DAC in the AD7804BRZ-REEL?
The on-chip Sub DAC allows the transfer function of each individual DAC to be shifted around the VBIAS point. - Can all analog outputs be updated simultaneously in the AD7804BRZ-REEL?
Yes, all analog outputs can be updated simultaneously using the asynchronous LDAC input due to the double-buffered data inputs. - What are some common applications of the AD7804BRZ-REEL?
Common applications include Optical Disk Drives, Instrumentation and Communication Systems, Process Control, Voltage Setpoint Control, Trim Potentiometer Replacement, and Automatic Calibration. - What is the maximum current consumption in normal mode for the AD7804BRZ-REEL?
The maximum current consumption in normal mode is 18 mA. - Is the AD7804BRZ-REEL available in reel packaging?
Yes, the AD7804BRZ-REEL is available in reel packaging.
