Overview
The AD5348BCPZ is a high-performance, octal 12-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This device operates from a 2.5 V to 5.5 V supply and features an on-chip output buffer that can drive the output to both supply rails. It also allows a choice of buffered or unbuffered reference input, enhancing its versatility in various applications. The AD5348BCPZ is part of the AD5346/AD5347/AD5348 family, which includes 8-bit, 10-bit, and 12-bit DACs, respectively, all of which are pin-compatible, facilitating easy design changes without redesigning the circuit board.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 Bits | ||||
| Relative Accuracy | ±2 | ±16 LSB | |||
| Differential Nonlinearity | ±0.2 | ±1 LSB | Guaranteed monotonic by design over all codes | ||
| Offset Error | ±0.4 | ±3 % of FSR | |||
| Gain Error | |||||
| 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 | |||
| Input Low Voltage (VIL) | 0.8 V @ VDD = 5 V | V | |||
| Input High Voltage (VIH) | 1.7 V @ VDD = 2.5 V to 5.5 V | V | |||
| Pin Capacitance | 5 pF | pF |
Key Features
- Octal 12-bit DAC with rail-to-rail output range: 0 V to VREF or 0 V to 2 × VREF
- Low power operation: 1.4 mA (max) at 3.6 V, power-down to 120 nA at 3 V, 400 nA at 5 V
- Guaranteed monotonic by design over all codes
- Simultaneous update of DAC outputs via LDAC pin
- Asynchronous CLR facility for resetting the DAC registers to zero
- Readback feature for internal DAC registers
- Buffered or unbuffered reference inputs
- Parallel interface with CS, WR, and readback capabilities
- Power-on reset to 0 V
- Temperature range: –40°C to +105°C
- Available in 40-lead LFCSP (6 mm × 6 mm) and 38-lead TSSOP packages
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 AD5348BCPZ?
The AD5348BCPZ has a resolution of 12 bits. - What is the operating voltage range of the AD5348BCPZ?
The device operates from a 2.5 V to 5.5 V supply. - What types of packages are available for the AD5348BCPZ?
The AD5348BCPZ is available in 40-lead LFCSP (6 mm × 6 mm) and 38-lead TSSOP packages. - Does the AD5348BCPZ support simultaneous update of DAC outputs?
Yes, the AD5348BCPZ supports simultaneous update of DAC outputs via the LDAC pin. - What is the power consumption of the AD5348BCPZ in power-down mode?
In power-down mode, the device consumes 120 nA at 3 V and 400 nA at 5 V. - Is the AD5348BCPZ guaranteed to be monotonic?
Yes, the AD5348BCPZ is guaranteed monotonic by design over all codes. - What is the temperature range of the AD5348BCPZ?
The temperature range is –40°C to +105°C. - Does the AD5348BCPZ have a power-on reset feature?
Yes, the device has a power-on reset feature that sets the DAC output to 0 V. - Can the AD5348BCPZ be used in portable battery-powered instruments?
Yes, the AD5348BCPZ is suitable for use in portable battery-powered instruments due to its low power consumption. - What is the purpose of the GAIN pin on the AD5348BCPZ?
The GAIN pin allows the output range to be set at 0 V to VREF or 0 V to 2 × VREF.
