Overview
The AD5346BRUZ-REEL7 is an octal 8-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This device operates from a 2.5 V to 5.5 V supply and features a parallel interface. It incorporates an on-chip output buffer that can drive the output to both supply rails and allows a choice of buffered or unbuffered reference input. The AD5346 is part of a family that includes 10-bit and 12-bit versions (AD5347 and AD5348, respectively), all of which are pin-compatible, enabling users to select the appropriate resolution for their application without redesigning the circuit board.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Number of Bits | 8 | ||||
| Number of D/A Converters | 8 | ||||
| Voltage Supply Range | 2.5 V | 5.5 V | V | Analog and Digital | |
| Output Type | Voltage | Buffered | |||
| Output Range | 0 V | VREF or 2 × VREF | V | Dependent on GAIN pin setting | |
| Settling Time | 8 µs | µs | |||
| INL/DNL (LSB) | ±0.15 | ±0.02 | LSB | ||
| Operating Temperature | -40°C | 105°C | °C | ||
| Package | 38-TSSOP |
Key Features
- On-Chip Output Buffer: Drives the output to both supply rails and allows a choice of buffered or unbuffered reference input.
- Parallel Interface: Data is loaded into the input registers on the rising edge of the WR signal. The CS pin selects the device, and the RD pin allows readback of the internal DAC registers.
- Double-Buffered Data: Allows simultaneous update of multiple DACs using the LDAC pin.
- Asynchronous CLR Input: Resets the contents of the input register and the DAC register to all zeros.
- Power-On Reset: Ensures the DAC output powers on to 0 V and remains there until valid data is written to the device.
- Pin Compatibility: The AD5346, AD5347, and AD5348 are pin-compatible, allowing users to select the appropriate resolution without redesigning the circuit board.
Applications
- Portable Battery-Powered Instruments: Suitable for devices requiring low power consumption and high precision.
- Digital Gain and Offset Adjustment: Used in applications requiring precise control over gain and offset.
- Programmable Voltage and Current Sources: Ideal for generating precise voltage or current levels.
- Optical Networking: Used in optical communication systems for precise signal control.
- Automatic Test Equipment: Utilized in test and measurement equipment for precise signal generation.
- Mobile Communications: Employed in mobile communication devices for signal processing.
- Programmable Attenuators: Used in applications requiring adjustable signal attenuation.
- Industrial Process Control: Applied in industrial control systems for precise signal control and measurement).
Q & A
- What is the voltage supply range for the AD5346BRUZ-REEL7?
The AD5346BRUZ-REEL7 operates from a 2.5 V to 5.5 V supply.
- How many bits of resolution does the AD5346BRUZ-REEL7 have?
The AD5346BRUZ-REEL7 is an 8-bit DAC.
- What type of interface does the AD5346BRUZ-REEL7 use?
The AD5346BRUZ-REEL7 uses a parallel interface.
- Can the AD5346BRUZ-REEL7 drive its output to both supply rails?
Yes, the AD5346BRUZ-REEL7 incorporates an on-chip output buffer that can drive the output to both supply rails.
- What is the settling time of the AD5346BRUZ-REEL7?
The settling time of the AD5346BRUZ-REEL7 is 8 µs.
- Does the AD5346BRUZ-REEL7 have a power-on reset feature?
Yes, the AD5346BRUZ-REEL7 has a power-on reset circuit that ensures the DAC output powers on to 0 V and remains there until valid data is written to the device.
- What is the operating temperature range of the AD5346BRUZ-REEL7?
The operating temperature range is from -40°C to 105°C.
- What package type does the AD5346BRUZ-REEL7 come in?
The AD5346BRUZ-REEL7 comes in a 38-TSSOP package.
- Can the AD5346BRUZ-REEL7 be used in portable battery-powered instruments?
Yes, the AD5346BRUZ-REEL7 is suitable for portable battery-powered instruments due to its low power consumption and high precision).
- Is the AD5346BRUZ-REEL7 pin-compatible with other models in the series?
Yes, the AD5346BRUZ-REEL7 is pin-compatible with the AD5347 and AD5348, allowing users to select the appropriate resolution without redesigning the circuit board).
