Overview
The AD5555CRUZ-REEL7 is a 14-bit, dual-channel, current-output, digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the AD5545/AD5555 family, designed to operate from a 4.5 V to 5.5 V supply range. It features a high-speed, 3-wire serial data interface compatible with microcontrollers, using serial data in (SDI), clock (CLK), and chip select (CS) inputs. The device includes an internal reset logic that allows power-on preset and dynamic reset at either zero or midscale, depending on the state of the MSB pin. The AD5555 is packaged in a compact 16-lead TSSOP package and can operate over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Resolution | N | - | - | - | 14 Bits | - |
| Relative Accuracy (INL) | INL | - | - | ±1 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 | - | - |
| Supply Voltage Range | VDD | - | 4.5 V | - | 5.5 V | - |
| Positive Supply Current | IDD | Logic inputs = 0 V | - | 10 µA | - | - |
| Power Dissipation | PDISS | Logic inputs = 0 V | - | 0.055 mW | - | - |
Key Features
- High-Speed Serial Interface: 3-wire microcontroller-compatible interface using SDI, CLK, and CS inputs.
- Dual Channel Operation: Supports simultaneous update of both channels using the LDAC function.
- Internal Reset Logic: Allows power-on preset and dynamic reset at either zero or midscale, depending on the MSB pin state.
- Compact Packaging: Available in a 16-lead TSSOP package.
- Wide Operating Temperature Range: Operates from −40°C to +85°C).
- Current-Output DAC: Uses a current-steering R-2R ladder design, suitable for use with external I-to-V converter amplifiers).
Applications
- Automatic Test Equipment: Ideal for precision current output requirements in automated testing environments).
- Instrumentation: Suitable for various instrumentation applications requiring high accuracy and precision).
- Digitally Controlled Calibration: Used in calibration systems where precise digital control over analog outputs is necessary).
- Industrial Control and PLCs: Applicable in industrial control systems and programmable logic controllers (PLCs) for precise analog output control).
- Programmable Attenuators: Can be used in programmable attenuator applications requiring precise current output control).
Q & A
- What is the resolution of the AD5555CRUZ-REEL7?
The AD5555CRUZ-REEL7 has a resolution of 14 bits).
- What is the full-scale current output of the AD5555CRUZ-REEL7?
The full-scale current output is 2 mA with ±20% tolerance when VREF = 10 V).
- What is the settling time of the AD5555CRUZ-REEL7?
The settling time to ±0.1% full scale is 0.5 µs).
- What is the supply voltage range for the AD5555CRUZ-REEL7?
The supply voltage range is from 4.5 V to 5.5 V).
- Does the AD5555CRUZ-REEL7 support simultaneous update of both channels?
Yes, it supports simultaneous update of both channels using the LDAC function).
- What is the operating temperature range of the AD5555CRUZ-REEL7?
The operating temperature range is from −40°C to +85°C).
- What type of packaging does the AD5555CRUZ-REEL7 come in?
The AD5555CRUZ-REEL7 is packaged in a 16-lead TSSOP package).
- What are some typical applications of the AD5555CRUZ-REEL7?
Typical applications include automatic test equipment, instrumentation, digitally controlled calibration, industrial control, and programmable attenuators).
- Does the AD5555CRUZ-REEL7 have internal reset logic?
Yes, it has internal reset logic that allows power-on preset and dynamic reset at either zero or midscale).
- What is the power dissipation of the AD5555CRUZ-REEL7 when logic inputs are at 0 V?
The power dissipation is 0.055 mW when logic inputs are at 0 V).
