Overview
The AD5545CRUZ-REEL7, produced by 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 16-bit and 14-bit resolution options. The AD5545CRUZ-REEL7 specifically features a 16-bit resolution. It operates from a single 4.5 V to 5.5 V supply range and requires an external reference voltage to establish the full-scale output current. The device includes an internal feedback resistor (RFB) that enhances resistance and temperature tracking when used with an external op-amp for I-to-V conversion. The serial data interface is 3-wire microcontroller compatible, using serial data in (SDI), clock (CLK), and chip select (CS) pins, and includes an additional LDAC function for simultaneous update operations.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 16 Bits | - |
| Relative Accuracy (INL) | INL | - | - | ±2 LSB | - | |
| Differential Nonlinearity (DNL) | DNL | - | - | ±1 LSB | - | |
| Full-Scale Current | IOUT | VREF = 10 V | - | 2 mA | ±20% | - |
| Settling Time | tS | To ±0.1% full scale | - | 0.5 µs | - | - |
| Power Supply Range | VDD | - | 4.5 V | - | 5.5 V | - |
| Operating Temperature | TA | - | -40°C | - | 85°C | - |
| Package Type | - | - | - | - | 16-Lead TSSOP | - |
Key Features
- High-Speed Serial Interface: 3-wire microcontroller compatible interface using SDI, CLK, and CS pins.
- Simultaneous Update: Additional LDAC function allows for simultaneous update of both DAC channels.
- Internal Reset Logic: Power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin.
- Compact Package: 16-lead TSSOP package for space-efficient designs.
- Wide Operating Temperature Range: Operates from -40°C to +85°C.
- External Reference Compatibility: Requires an external reference voltage to establish the full-scale output current.
- Internal Feedback Resistor (RFB): Enhances resistance and temperature tracking when used with an external op-amp.
Applications
- Automatic Test Equipment: Used in automated testing and calibration systems.
- Instrumentation: Suitable for precision measurement and control in various instruments.
- Industrial Control and PLCs: Employed in industrial control systems and programmable logic controllers (PLCs).
- Digitally Controlled Calibration: Used for precise calibration in various applications.
- Programmable Attenuators: Utilized in systems requiring adjustable signal attenuation.
Q & A
- What is the resolution of the AD5545CRUZ-REEL7?
The AD5545CRUZ-REEL7 has a resolution of 16 bits.
- What is the operating supply voltage range for the AD5545CRUZ-REEL7?
The device operates from a single 4.5 V to 5.5 V supply range.
- What type of package does the AD5545CRUZ-REEL7 come in?
The device is packaged in a 16-lead TSSOP package.
- What is the settling time of the AD5545CRUZ-REEL7?
The settling time is 0.5 µs to ±0.1% full scale.
- Does the AD5545CRUZ-REEL7 require an external reference voltage?
Yes, it requires an external reference voltage to establish the full-scale output current.
- What is the operating temperature range of the AD5545CRUZ-REEL7?
The device operates from -40°C to +85°C.
- What is the purpose of the internal feedback resistor (RFB) in the AD5545CRUZ-REEL7?
The RFB enhances resistance and temperature tracking when used with an external op-amp for I-to-V conversion.
- Can the AD5545CRUZ-REEL7 perform simultaneous updates of both DAC channels?
Yes, it includes an LDAC function for simultaneous update operations.
- What are some common applications of the AD5545CRUZ-REEL7?
Common applications include automatic test equipment, instrumentation, industrial control, digitally controlled calibration, and programmable attenuators.
- How does the internal reset logic of the AD5545CRUZ-REEL7 work?
The internal reset logic allows power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin.
