Overview
The AD5342BRU, produced by Analog Devices Inc., is a dual 12-bit Digital-to-Analog Converter (DAC) that operates from a 2.5 V to 5.5 V supply. This device is part of the AD5332/AD5333/AD5342/AD5343 family and is known for its low power consumption and high precision. The AD5342BRU features a parallel interface, on-chip rail-to-rail output buffer amplifiers, and a power-down mode that reduces current consumption to 80 nA at 3 V or 200 nA at 5 V. It is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package), making it suitable for a variety of applications requiring precise analog output from digital inputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 bits | |
| Supply Voltage | 2.5 V to 5.5 V | V |
| Current Consumption (Active) | 230 µA @ 3 V | µA |
| Current Consumption (Power-Down) | 80 nA @ 3 V, 200 nA @ 5 V | nA |
| Relative Accuracy | ±2 LSB | |
| Differential Nonlinearity | ±0.2 LSB | |
| Offset Error | ±0.4 % of FSR | |
| Gain Error | ±0.15 % of FSR | |
| Output Range | 0 V to VREF or 0 V to 2 VREF | V |
| Temperature Range | –40°C to +105°C | °C |
| Package Type | 28-lead TSSOP |
Key Features
- Parallel interface for data input
- On-chip rail-to-rail output buffer amplifiers
- Power-down feature reducing current to 80 nA @ 3 V or 200 nA @ 5 V
- Double-buffered input logic for simultaneous update of DAC outputs via LDAC pin
- Asynchronous CLR facility to clear all input and DAC registers to zeros
- Buffered or unbuffered reference input options
- Gain control pin to set output range to 0 V to VREF or 0 V to 2 VREF
- Power-on reset to zero volts
Applications
- Portable battery-powered instruments
- Digital gain and offset adjustment
- Programmable voltage and current sources
- Programmable attenuators
- Industrial process control
- Digital potentiometer emulation
- Video processing
- Test and measurement equipment (e.g., oscilloscopes, spectrum analyzers, signal generators)
- Industrial control systems (e.g., motor control, automatic control systems)
- LED drivers for lighting systems
Q & A
- What is the resolution of the AD5342BRU DAC?
The AD5342BRU has a resolution of 12 bits.
- What is the operating voltage range of the AD5342BRU?
The AD5342BRU operates from a 2.5 V to 5.5 V supply.
- How much current does the AD5342BRU consume in active mode at 3 V?
The AD5342BRU consumes 230 µA at 3 V in active mode.
- What is the current consumption in power-down mode at 3 V and 5 V?
In power-down mode, the current consumption is 80 nA at 3 V and 200 nA at 5 V.
- What is the relative accuracy of the AD5342BRU?
The relative accuracy is ±2 LSB.
- Does the AD5342BRU have a power-on reset feature?
Yes, the AD5342BRU has a power-on reset feature that sets the output to zero volts.
- What types of reference input options are available for the AD5342BRU?
The AD5342BRU offers both buffered and unbuffered reference input options.
- Can the output range of the AD5342BRU be adjusted?
Yes, the output range can be set to 0 V to VREF or 0 V to 2 VREF using the GAIN pin.
- What is the temperature range for the AD5342BRU?
The AD5342BRU operates over a temperature range of –40°C to +105°C.
- In what package type is the AD5342BRU available?
The AD5342BRU is available in a 28-lead TSSOP package.
