Overview
The AD7304BRUZ-REEL7 is a quad, 8-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component operates from a single +3 V to +5 V supply or ±5 V supplies, making it versatile for various applications. The AD7304 features a serial interface, utilizing data in (SDI), clock (CLK), and chip select (CS) pins, which are compatible with SPI and microcontrollers. It is designed with a double-buffered architecture, allowing all four input registers to be preloaded with new values before updating the analog output values simultaneously via the LDAC control strobe.
The device includes internal precision buffers that swing rail-to-rail, and the reference input range allows for positive or negative full-scale output voltages. An internal power-on reset sets the output to zero scale at system turn-on, and a power shutdown feature is available, consuming less than 40 µA in shutdown mode.
Key Specifications
| Parameter | Symbol | Condition | Value | Unit |
|---|---|---|---|---|
| Resolution | - | - | 8 bits | - |
| Supply Voltage Range | VDD | - | 2.7 V to 5.5 V, ±5 V | V |
| Reference Input Range | VREFIN | VSS < VREF < VDD | VSS to VDD | V |
| Output Voltage Range | VOUT | - | VSS to VDD | V |
| Output Current Drive | IOUT | Code = 0x80, ΔVOUT < 1 LSB | ±3 mA | mA |
| Shutdown Resistance | ROUT | DAC outputs in shutdown state | 120 kΩ | kΩ |
| Capacitive Load | CL | No oscillation | 200 pF | pF |
| Logic Input Low Voltage | VIL | VDD = 3 V or 5 V | 0.6 V or 0.8 V | V |
| Logic Input High Voltage | VIH | CLK only | 80% VDD | V |
| Clock Frequency | fCLK | - | 16.6 MHz max | MHz |
| Operating Temperature Range | TA | - | -40°C to +125°C | °C |
| Package Type | - | - | 16-lead TSSOP | - |
Key Features
- Quad, 8-bit DAC with serial interface (SPI and microcontroller compatible)
- Operates from a single +3 V to +5 V supply or ±5 V supplies
- Double-buffered architecture for simultaneous update of all DAC outputs
- Rail-to-rail output voltage range set by external reference input
- Internal power-on reset to zero scale
- Low power shutdown feature (less than 40 µA)
- High-speed serial data interface with clock frequencies up to 16.6 MHz
- Available in 16-lead TSSOP package
Applications
The AD7304BRUZ-REEL7 is suitable for a variety of applications requiring precise digital-to-analog conversion. These include:
- Industrial control systems
- Automotive systems
- Medical devices
- Aerospace and defense systems
- Consumer electronics requiring high precision and low power consumption
Q & A
- What is the resolution of the AD7304BRUZ-REEL7?
The AD7304BRUZ-REEL7 has an 8-bit resolution.
- What is the supply voltage range for the AD7304BRUZ-REEL7?
The supply voltage range is from 2.7 V to 5.5 V or ±5 V.
- How does the AD7304BRUZ-REEL7 update its DAC outputs?
The AD7304BRUZ-REEL7 uses a double-buffered architecture, allowing all four input registers to be preloaded with new values before updating the DAC outputs simultaneously via the LDAC control strobe.
- What is the maximum clock frequency for the serial interface?
The maximum clock frequency is 16.6 MHz.
- What is the power consumption in shutdown mode?
The power consumption in shutdown mode is less than 40 µA.
- What is the operating temperature range for the AD7304BRUZ-REEL7?
The operating temperature range is from -40°C to +125°C.
- In what package is the AD7304BRUZ-REEL7 available?
The AD7304BRUZ-REEL7 is available in a 16-lead TSSOP package.
- How is the output voltage range set for the AD7304BRUZ-REEL7?
The output voltage range is set by the external reference input voltage applied to the VREFIN pin.
- Does the AD7304BRUZ-REEL7 have an internal power-on reset?
Yes, the AD7304BRUZ-REEL7 has an internal power-on reset that sets the output to zero scale at system turn-on.
- What are some typical applications for the AD7304BRUZ-REEL7?
Typical applications include industrial control systems, automotive systems, medical devices, aerospace and defense systems, and consumer electronics requiring high precision and low power consumption.
