Overview
The DAC7565IAPWR from Texas Instruments is a low-power, voltage-output, four-channel, 12-bit digital-to-analog converter (DAC). This device is designed for high accuracy and low power consumption, making it ideal for portable, battery-operated equipment. It features an internal 2.5V reference with high accuracy and low temperature drift, ensuring stable output voltages across a wide temperature range. The DAC7565IAPWR is also compatible with various serial interfaces, including SPI, QSPI, Microwire, and DSP interfaces, and operates at clock rates up to 50MHz.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 Bits | |
| Relative Accuracy | ±0.5 LSB | |
| Glitch Energy | 0.15 nV-s | |
| Internal Reference Voltage | 2.5 V | |
| Internal Reference Initial Accuracy | 0.004% (typ) | |
| Internal Reference Temperature Drift | 2 ppm/°C (typ), 5 ppm/°C (max) | |
| Power Supply Range | +2.7 V to +5.5 V | |
| Settling Time | 10 µs to ±0.024% Full-Scale Range (FSR) | |
| Serial Interface Clock Rate | Up to 50 MHz | |
| Logic Compatibility | 1.8 V to 5.5 V | |
| Temperature Range | –40°C to +105°C | |
| Power Consumption (Normal Mode) | 2.9 mW at 3 V, 1 mA at 5 V | |
| Power Consumption (Power-Down Mode) | 1.5 µW |
Key Features
- Ultra-low power operation with 1 mA at 5 V and 1.5 µW in power-down mode.
- Internal 2.5 V reference with 0.004% initial accuracy and 2 ppm/°C temperature drift.
- Four-channel, 12-bit DAC with monotonic performance over the temperature range.
- Low glitch energy of 0.15 nV-s to minimize undesired code-to-code transient voltages.
- Power-on reset to zero-scale or mid-scale and asynchronous clear to zero-scale or mid-scale.
- Wide power-supply range of +2.7 V to +5.5 V and 1.8 V to 5.5 V logic compatibility.
- On-chip output buffer amplifier with rail-to-rail operation.
- Low-power serial interface with Schmitt-triggered inputs up to 50 MHz.
- Drop-in and functionally compatible with DAC8165, DAC8565, DAC7564, DAC8164, and DAC8564.
Applications
- Portable instrumentation
- Closed-loop servo-control
- Process control, PLCs
- Data acquisition systems
- Programmable attenuation
- PC peripherals
Q & A
- What is the resolution of the DAC7565IAPWR?
The DAC7565IAPWR has a resolution of 12 bits.
- What is the internal reference voltage of the DAC7565IAPWR?
The internal reference voltage is 2.5 V with an initial accuracy of 0.004% and a temperature drift of 2 ppm/°C.
- What is the power consumption of the DAC7565IAPWR in normal mode?
The power consumption is 2.9 mW at 3 V and 1 mA at 5 V.
- What is the power consumption of the DAC7565IAPWR in power-down mode?
The power consumption in power-down mode is 1.5 µW.
- What is the temperature range of the DAC7565IAPWR?
The device operates over a temperature range of –40°C to +105°C.
- Is the DAC7565IAPWR compatible with other DAC models?
Yes, it is drop-in and functionally compatible with DAC8165, DAC8565, DAC7564, DAC8164, and DAC8564.
- What serial interfaces does the DAC7565IAPWR support?
The device supports SPI, QSPI, Microwire, and DSP interfaces with clock rates up to 50 MHz.
- What is the settling time of the DAC7565IAPWR?
The settling time is 10 µs to ±0.024% Full-Scale Range (FSR).
- Does the DAC7565IAPWR have a power-on reset feature?
Yes, it has a power-on reset circuit that ensures the DAC output powers up at either zero-scale or mid-scale until a valid code is written.
- What is the glitch energy of the DAC7565IAPWR?
The glitch energy is 0.15 nV-s.
