Overview
The AD5305ARMZ is a quad 8-bit buffered voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is part of the AD5305/AD5315/AD5325 family, which includes 8-, 10-, and 12-bit resolutions, respectively. The AD5305ARMZ operates from a single 2.5 V to 5.5 V supply, consuming 500 μA at 3 V, making it suitable for low-power applications. It features a 2-wire serial interface compatible with I2C and SMBus protocols, allowing for clock rates up to 400 kHz. The device is packaged in a 10-lead MSOP and includes on-chip output buffer amplifiers that provide rail-to-rail output swing with a slew rate of 0.7 V/μs.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Supply Voltage | 2.5 V to 5.5 V |
| Current Consumption | 500 μA @ 3 V, 600 μA @ 5 V |
| Interface | 2-wire serial (I2C and SMBus compatible) |
| Clock Rate | Up to 400 kHz |
| Output Range | 0 V to VREF |
| Power-Down Current | 80 nA @ 3 V, 200 nA @ 5 V |
| Operating Temperature | -40°C to +105°C |
| Package | 10-lead MSOP |
| Integral Non-Linearity (INL) | ±1 LSB (A version), ±2.5 LSB (B version) |
Key Features
- Quad 8-bit DACs with on-chip output buffer amplifiers providing rail-to-rail output swing.
- Low power operation: 500 μA at 3 V and 600 μA at 5 V.
- 2-wire serial interface (I2C and SMBus compatible) with clock rates up to 400 kHz.
- Simultaneous update of all DAC outputs using the LDAC function.
- Power-on reset to 0 V and software clear function to reset all DAC registers.
- Three programmable power-down modes reducing current consumption to 80 nA @ 3 V or 200 nA @ 5 V.
- Guaranteed monotonic by design over all codes.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Industrial process control.
Q & A
- What is the resolution of the AD5305ARMZ DAC?
The AD5305ARMZ has a resolution of 8 bits.
- What is the supply voltage range for the AD5305ARMZ?
The supply voltage range is from 2.5 V to 5.5 V.
- What type of interface does the AD5305ARMZ use?
The AD5305ARMZ uses a 2-wire serial interface compatible with I2C and SMBus protocols.
- What is the maximum clock rate for the serial interface?
The maximum clock rate is up to 400 kHz.
- How does the power-down feature work?
The power-down feature reduces the current consumption to 80 nA @ 3 V or 200 nA @ 5 V, with three programmable power-down modes available.
- What is the operating temperature range for the AD5305ARMZ?
The operating temperature range is from -40°C to +105°C.
- What is the package type for the AD5305ARMZ?
The package type is a 10-lead MSOP.
- Does the AD5305ARMZ have a power-on reset feature?
Yes, the AD5305ARMZ has a power-on reset circuit that ensures the DAC outputs power up to 0 V and remain there until a valid write takes place.
- Can multiple AD5305ARMZ devices be placed on the same bus?
Yes, multiple devices can be placed on the same bus.
- What is the slew rate of the output buffer amplifiers?
The slew rate of the output buffer amplifiers is 0.7 V/μs.
