Overview
The LTC2642ACDD-16#PBF is a 16-bit unbuffered voltage output Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is part of the LTC2641/LTC2642 family, which includes 16-, 14-, and 12-bit DACs. The LTC2642 operates from a single supply voltage ranging from 2.7V to 5.5V and is guaranteed to be monotonic over temperature. It features high precision with less than ±1LSB integral and differential nonlinearity errors, ensuring reliable performance in various applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 16 | Bits |
| Supply Voltage (VDD) | 2.7 to 5.5 | V |
| Reference Input Range (VREF) | 2V to VDD | V |
| Digital Input High Voltage (VIH) | 2.4 to 2.0 | V (VCC = 3.6V to 5.5V, VCC = 2.7V to 3.6V) |
| Digital Input Low Voltage (VIL) | 0.8 to 0.6 | V (VCC = 4.5V to 5.5V, VCC = 2.7V to 4.5V) |
| Supply Current (IDD) | 120 | µA |
| Output Slew Rate | 15 | V/µs |
| Output Settling Time | 1 | µs |
| Integral Nonlinearity (INL) | ±1 | LSB |
| Differential Nonlinearity (DNL) | ±1 | LSB |
| Package Type | 10-Lead DFN (3mm x 3mm w/ EP) |
Key Features
- High precision with ±1LSB integral and differential nonlinearity errors over temperature.
- Single supply operation from 2.7V to 5.5V.
- Low supply current of 120µA.
- Low offset error of ±1LSB.
- Simple SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz.
- Power-on reset circuit clears the DAC output to midscale.
- Logic low on the CLR pin asynchronously clears the DAC to midscale.
- Matched scaling resistors for bipolar operation with an external precision op-amp.
Applications
The LTC2642ACDD-16#PBF is suitable for a variety of applications requiring high precision and reliability, such as industrial control systems, medical devices, test and measurement equipment, and automotive systems. Its ability to operate in both unipolar and bipolar modes, along with its low power consumption and high accuracy, make it an ideal choice for applications where precise voltage output is critical.
Q & A
- What is the resolution of the LTC2642ACDD-16#PBF? The resolution is 16 bits.
- What is the supply voltage range for the LTC2642ACDD-16#PBF? The supply voltage range is from 2.7V to 5.5V.
- What is the reference input range for the LTC2642ACDD-16#PBF? The reference input range is from 2V to VDD.
- What is the typical supply current of the LTC2642ACDD-16#PBF? The typical supply current is 120µA.
- How does the power-on reset function work on the LTC2642ACDD-16#PBF? The power-on reset circuit clears the DAC output to midscale when power is initially applied.
- Can the LTC2642ACDD-16#PBF be used in bipolar operation? Yes, it includes matched scaling resistors for use with an external precision op-amp to generate a ±VREF output swing.
- What is the maximum clock rate for the serial interface of the LTC2642ACDD-16#PBF? The serial interface can operate at clock rates up to 50MHz.
- What is the output settling time of the LTC2642ACDD-16#PBF? The output settling time is 1µs to ±0.5LSB of full scale.
- Is the LTC2642ACDD-16#PBF guaranteed to be monotonic over temperature? Yes, it is guaranteed to be monotonic over temperature.
- What package types are available for the LTC2642ACDD-16#PBF? It is available in a 10-Lead DFN (3mm x 3mm w/ EP) package.
