Overview
The DAC8512FPZ from Analog Devices Inc. is a complete serial input, 12-bit, voltage output digital-to-analog converter (DAC) designed to operate from a single +5 V supply. It integrates the DAC, input shift register, latches, reference, and a rail-to-rail output amplifier, making it a self-contained solution for various applications. Built using the CBCMOS process, this monolithic DAC offers low cost and ease of use in +5 V only systems. The device is coded in natural binary with the most significant bit (MSB) loaded first and features a high-speed, three-wire serial interface compatible with DSPs, including data in (SDI), clock (CLK), and load strobe (LD) pins, along with a chip-select pin for multiple DAC connections and a CLR input for resetting the output to zero scale.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 12 Bits | - |
| Relative Accuracy | INL | - | -1/4 | - | +1 LSB (E Grade) | - |
| Differential Nonlinearity | DNL | - | -3/4 | - | +1 LSB (No Missing Codes) | - |
| Zero-Scale Error | VZSE | Data = 000H | - | - | +3 LSB | - |
| Full-Scale Voltage | VFS | Data = FFFH | 4.085 | 4.095 | 4.105 | V |
| Logic Input Low Voltage | VIL | - | - | - | 0.8 | V |
| Logic Input High Voltage | VIH | - | - | - | 2.4 | V |
| Input Leakage Current | IIL | - | - | - | 10 µA | - |
| Positive Supply Current | IDD | VIH = 2.4 V, VIL = 0.8 V | - | - | 2.5 mW | - |
| Settling Time | - | - | - | - | 16 µs (Typ) | - |
| Operating Temperature Range | - | - | -40°C | - | +85°C | - |
Key Features
- Single +5 V supply operation with no external components required.
- High-speed, three-wire serial interface (SDI, CLK, LD) with DSP compatibility.
- Chip-select pin for connecting multiple DACs.
- CLR input for setting the output to zero scale at power-on or upon user demand.
- Rail-to-rail output amplifier capable of sinking and sourcing 5 mA.
- On-chip, laser-trimmed reference providing an accurate full-scale output voltage of 4.095 V.
- Low power consumption: 2.5 mW.
- Available in plastic DIPs and SO-8 surface mount packages.
- Extended industrial temperature range: –40°C to +85°C.
Applications
- Portable instrumentation.
- Digitally controlled calibration.
- Servo controls.
- Process control equipment.
- PC peripherals.
Q & A
- What is the resolution of the DAC8512FPZ?
The DAC8512FPZ has a resolution of 12 bits.
- What is the operating voltage of the DAC8512FPZ?
The DAC8512FPZ operates from a single +5 V supply.
- What is the full-scale output voltage of the DAC8512FPZ?
The full-scale output voltage is 4.095 V.
- What is the settling time of the DAC8512FPZ?
The settling time is typically 16 µs.
- What types of packages are available for the DAC8512FPZ?
The DAC8512FPZ is available in plastic DIPs and SO-8 surface mount packages.
- What is the operating temperature range of the DAC8512FPZ?
The operating temperature range is –40°C to +85°C.
- Does the DAC8512FPZ require external components for operation?
No, the DAC8512FPZ does not require any external components for operation.
- What is the power consumption of the DAC8512FPZ?
The power consumption is 2.5 mW.
- How does the serial interface of the DAC8512FPZ work?
The serial interface is a high-speed, three-wire interface (SDI, CLK, LD) with DSP compatibility and includes a chip-select pin for multiple DAC connections.
- What is the purpose of the CLR input on the DAC8512FPZ?
The CLR input sets the output to zero scale at power-on or upon user demand.
