DAC8568 16-bit, octal-channel, ultra-low glitch, voltage output DAC with 2.5V, 2ppm/°C internal reference | TI.com

DAC8568 (ACTIVE)

16-bit, octal-channel, ultra-low glitch, voltage output DAC with 2.5V, 2ppm/°C internal reference

16-bit, octal-channel, ultra-low glitch, voltage output DAC with 2.5V, 2ppm/°C internal reference - DAC8568
 

Recommended alternative parts

  • DAC80508  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. 

Description

The DAC7568, DAC8168, and DAC8568 are low-power, voltage-output, eight-channel, 12-, 14-, and 16-bit digital-to-analog converters (DACs), respectively. These devices include a 2.5V, 2ppm/°C internal reference (disabled by default), giving a full-scale output voltage range of 2.5V or 5V. The internal reference has an initial accuracy of 0.004% and can source up to 20mA at the VREFIN/VREFOUT pin. These devices are monotonic, providing excellent linearity and minimizing undesired code-to-code transient voltages (glitch). They use a versatile 3-wire serial interface that operates at clock rates up to 50MHz. The interface is compatible with standard SPI™, QSPI™, Microwire™, and digital signal processor (DSP) interfaces.

The DAC7568, DAC8168, and DAC8568 incorporate a power-on-reset circuit that ensures the DAC output powers up at either zero scale or midscale until a valid code is written to the device. These devices contain a power-down feature, accessed over the serial interface, that reduces current consumption to typically 0.18µA at 5V. Power consumption (including internal reference) is typically 2.9mW at 3V, reducing to less than 1µW in power-down mode. The low power consumption, internal reference, and small footprint make these devices ideal for portable, battery-operated equipment.

The DAC7568, DAC8168, and DAC8568 are drop-in and function-compatible with each other, and are available in TSSOP-16 and TSSOP-14 packages.

Features

  • Relative Accuracy:
    • DAC7568 (12-Bit): 0.3 LSB INL
    • DAC8168 (14-Bit): 1 LSB INL
    • DAC8568 (16-Bit): 4 LSB INL
  • Glitch Energy: 0.1nV-s
  • Internal Reference:
    • 2.5V Reference Voltage (disabled by default)
    • 0.004% Initial Accuracy (typ)
    • 2ppm/°C Temperature Drift (typ)
    • 5ppm/°C Temperature Drift (max)
    • 20mA Sink/Source Capability
  • Power-On Reset to Zero Scale or Midscale
  • Ultralow Power Operation: 1.25mA at 5V Including Internal Reference Current
  • Wide Power-Supply Range: +2.7V to +5.5V
  • Monotonic Over Entire Temperature Range
  • Low-Power Serial Interface with Schmitt-Triggered Inputs: Up to 50MHz
  • On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
  • Temperature Range: –40°C to +125°C

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Precision DACs (<=10MSPS)

 
Resolution (Bits)
Architecture
DAC Channels
Interface
Output Range (Max) (mA/V)
Output Range (Min) (mA/V)
Settling Time (µs)
Output Type
Reference: Type
Rating
Operating Temperature Range (C)
Features
DAC8568 DAC7565 DAC7568 DAC8164 DAC8165 DAC8168 DAC8554 DAC8560 DAC8562 DAC8564
16     12     12     14     14     14     16     16     16     16    
String     String     String     String     String     String     String     String     String     String    
8     4     8     4     4     8     4     1     2     4    
SPI     SPI     SPI     SPI     SPI     SPI     SPI     SPI     SPI     SPI    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5     5.5    
0     0     0     0     0     0     0     0     0     0    
5     8     5     8     8     5     10     8     7     8    
Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage     Buffered Voltage    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext     Ext
Int    
Ext
Int    
Ext
Int    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 105     -40 to 125     -40 to 105     -40 to 105     -40 to 125     -40 to 105     -40 to 105