Overview
The AD5555CRUZ from Analog Devices Inc. is a dual, current-output, serial-input digital-to-analog converter (DAC) available in a compact 16-lead TSSOP package. This device is part of the AD5545/AD5555 series, offering 14-bit resolution for the AD5555 model. It operates from a single 5 V supply and is capable of bipolar output up to ±15 V with the use of an external reference voltage. The AD5555 is designed for high-speed operation with a 3-wire serial data interface compatible with microcontrollers, using serial data in (SDI), clock (CLK), and chip select (CS) inputs. The device also features an additional LDAC function for simultaneous update operation and internal reset logic for power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | - | - | - | 14 bits | - |
| Full-Scale Current | VREF = 10 V | - | 2 mA | - | mA |
| DNL (Differential Nonlinearity) | - | - | - | ±1 LSB | - |
| INL (Integral Nonlinearity) | - | - | - | ±1 LSB | - |
| Settling Time | To ±0.1% full scale | - | 0.5 µs | - | µs |
| Power Supply Range | - | 4.5 V | 5 V | 5.5 V | V |
| Operating Temperature Range | - | -40°C | - | 85°C | °C |
| Package Type | - | - | - | 16-lead TSSOP | - |
Key Features
- High-speed 3-wire serial data interface compatible with microcontrollers using SDI, CLK, and CS inputs.
- Simultaneous update operation via the LDAC function.
- Internal feedback resistor (RFB) for enhanced resistance and temperature tracking when used with an external op-amp.
- Power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin.
- Compact 16-lead TSSOP package.
- Operates from -40°C to +85°C.
- Supports bipolar output up to ±15 V with an external reference voltage.
Applications
- Automatic test equipment: The AD5555 is suitable for generating precise analog signals in automated testing environments.
- Instrumentation: Used in various measurement and control instruments due to its high precision and stability.
- Digitally controlled calibration: Ideal for applications requiring precise calibration of analog signals.
- Industrial control and PLCs: Used in industrial control systems for precise analog signal generation.
- Programmable attenuator: Can be used to create programmable attenuators in various signal processing applications.
- Digital potentiometer emulation: Can emulate digital potentiometers, providing digitally controlled variable resistances in circuits.
- Video processing: Converts digital video signals into analog signals for display and transmission.
Q & A
- What is the resolution of the AD5555 DAC?
The AD5555 has a resolution of 14 bits.
- What is the full-scale current output of the AD5555?
The full-scale current output is 2 mA with VREF = 10 V.
- What is the settling time of the AD5555?
The settling time is 0.5 µs to ±0.1% full scale.
- What is the operating temperature range of the AD5555?
The operating temperature range is from -40°C to +85°C.
- What type of package does the AD5555 come in?
The AD5555 comes in a 16-lead TSSOP package.
- Does the AD5555 require an external reference voltage?
- What is the power supply range for the AD5555?
The power supply range is from 4.5 V to 5.5 V.
- Can the AD5555 be used for bipolar output?
- What is the purpose of the LDAC function in the AD5555?
The LDAC function allows for simultaneous update operation of both DAC channels.
- How does the AD5555 handle power-on reset and dynamic reset?
The AD5555 can be set to power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin.
