Overview
The AD5348BRUZ is a digital-to-analog converter (DAC) produced by Analog Devices Inc. It is part of the AD5346/AD5347/AD5348 family, specifically being an octal 12-bit DAC. This device operates from a supply voltage range of 2.5 V to 5.5 V and features an on-chip output buffer that can drive the output to both supply rails. The AD5348BRUZ also allows a choice of buffered or unbuffered reference inputs, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 Bits | ||||
| Relative Accuracy | ±2 | ±16 LSB | Guaranteed monotonic by design over all codes | ||
| Differential Nonlinearity | ±0.2 | ±1 LSB | Guaranteed monotonic by design over all codes | ||
| Offset Error | ±0.4 | ±3 % of FSR | |||
| Gain Error | ±0.4 | ±3 % of FSR | |||
| Minimum Output Voltage | 0.001 V | V | Rail-to-rail operation | ||
| Maximum Output Voltage | VDD – 0.001 V | V | Rail-to-rail operation | ||
| DC Output Impedance | 0.5 Ω | Ω | |||
| Short Circuit Current | 25 mA (VDD = 5 V), 16 mA (VDD = 3 V) | mA | |||
| Power-Up Time | 2.5 μs (VDD = 5 V), 5 μs (VDD = 3 V) | μs | Coming out of power-down mode | ||
| Input Current | ±1 µA | µA | VIL, Input Low Voltage | ||
| Input Low Voltage | 0.8 V (VDD = 5 V ±10%) | V | |||
| Input High Voltage | 1.7 V (VDD = 2.5 V to 5.5 V) | V | |||
| Pin Capacitance | 5 pF | pF |
Key Features
- Octal 12-bit DAC with on-chip output buffer capable of driving outputs to both supply rails.
- Choice of buffered or unbuffered reference inputs.
- Low power operation: 1.4 mA (max) at 3.6 V, power-down to 120 nA at 3 V, and 400 nA at 5 V.
- Guaranteed monotonic by design over all codes.
- Rail-to-rail output range: 0 V to VREF or 0 V to 2 × VREF.
- Power-on reset to 0 V.
- Simultaneous update of DAC outputs via LDAC pin.
- Asynchronous CLR facility.
- Readback capability.
- 20 ns write time.
- Temperature range: –40°C to +105°C.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Optical networking.
- Automatic test equipment.
- Mobile communications.
- Programmable attenuators.
- Industrial process control.
Q & A
- What is the resolution of the AD5348BRUZ DAC?
The AD5348BRUZ is an octal 12-bit DAC. - What is the operating voltage range of the AD5348BRUZ?
The device operates from a supply voltage range of 2.5 V to 5.5 V. - What is the power consumption of the AD5348BRUZ?
The device consumes a maximum of 1.4 mA at 3.6 V and can power down to 120 nA at 3 V or 400 nA at 5 V. - Does the AD5348BRUZ have rail-to-rail output capability?
Yes, the AD5348BRUZ has a rail-to-rail output range from 0 V to VREF or 0 V to 2 × VREF. - What is the temperature range of the AD5348BRUZ?
The device operates over a temperature range of –40°C to +105°C. - What are the packaging options for the AD5348BRUZ?
The device is available in 38-lead TSSOP and 40-lead LFCSP packaging. - Does the AD5348BRUZ support simultaneous update of DAC outputs?
Yes, the device supports simultaneous update of DAC outputs via the LDAC pin. - What is the write time for the AD5348BRUZ?
The write time is 20 ns. - Is the AD5348BRUZ guaranteed to be monotonic?
Yes, the device is guaranteed monotonic by design over all codes. - What are some typical applications of the AD5348BRUZ?
Typical applications include portable battery-powered instruments, digital gain and offset adjustment, programmable voltage and current sources, optical networking, automatic test equipment, mobile communications, programmable attenuators, and industrial process control.
