Analog signal converter DAC8562

dual-channeldigital

Overview The DAC8562 is a 16-bit, dual-channel, low-power buffered voltage-output digital-to-analog converter with an internal 2.5-V reference (typical drift 4 ppm/°C). The internal reference supports a 2.5 V or 5 V full-scale option and can source/sink up to 20 mA at REFIN/REFOUT. The device is monotonic with excellent linearity and ultra-low glitch energy, and it supports SPI/QSPI/Microwire/DSP-compatible three-wire serial interfaces up to 50 MHz.

Functional description The DAC8562 family powers up at zero scale until a valid code is written (power-on reset to zero scale). Devices offer low-power and power-down modes (typical power-down current ~550 nA at 5 V) and are available in small-footprint packages, making them suitable for portable and battery-powered equipment. DACxx62 devices are drop-in compatible within the family.

Features

• Dual-channel, 16-bit resolution
• Buffered voltage output (rail-to-rail buffer)
• Internal 2.5-V reference (2.5 V output option or 5 V full-scale option)
• External/internal bidirectional reference pin (REFIN/REFOUT)
• Very low glitch impulse: 0.1 nV·s (typical)
• 50 MHz SPI with Schmitt-triggered inputs (SPI/QSPI/Microwire/DSP compatible)
• LDAC and CLR functions for synchronous update and clear
• Power-down feature with ultra-low standby current
• Wide supply range: 2.7 V to 5.5 V
• Power-on reset to zero scale (DACxx62)
• Packages: WSON-10 (3 mm × 3 mm) and VSSOP-10
• Operating temperature: –40°C to 125°C

Parameters Resolution (Bits) | 16
Number of DAC channels | 2
Interface type | SPI
Output type | Buffered Voltage
Output voltage range (V) | 0 to 5.5
INL (max) (±LSB) | 12
Settling time (µs) | 7
Reference type | Ext, Int
Architecture | String
Features | Current source/sink DAC
Sample/update rate (Msps) | 0.1
Power consumption (typ) (mW) | 0.5 (tabular) / ~4 mW typ at 5 V AVDD incl. internal ref
Operating temperature range (°C) | -40 to 125
Product type | Precision DAC

Additional technical notes The internal reference typical drift is 4 ppm/°C (max 10 ppm/°C) with initial accuracy of ±5 mV. The REFIN/REFOUT pin can source or sink up to 20 mA. Typical low-power figures vary by measurement method; power-down current can be ~550 nA at 5 V. DACxx62 devices are monotonic and designed to minimize code-to-code transients and glitch energy for precision, low-glitch applications.

Technical specifications

• Model: DAC8562 (16-bit, dual-channel)
• Resolution: 16 bits
• Channels: 2 (dual)
• Output: Buffered voltage output, rail-to-rail buffer
• Output range: 0 V to 5.5 V (supports 2.5 V or 5 V full-scale)
• Reference: Internal 2.5 V (4 ppm/°C typ) or external reference input
• Reference accuracy: ±5 mV initial (internal ref)
• Reference source/sink capability: up to 20 mA
• Interface: SPI-compatible, up to 50 MHz
• Glitch impulse: 0.1 nV·s (typical)
• INL (max): 12 ±LSB
• Settling time: 7 µs
• Power supply: 2.7 V to 5.5 V
• Power consumption: typical tabular entry 0.5 mW; typical system figure ~4 mW at 5 V AVDD incl. internal ref; supports power-down (~550 nA at 5 V)
• Temperature range: –40°C to 125°C
• Packages: WSON-10 (3 mm × 3 mm) and VSSOP-10