Information

52 | Signal Chain Guide 2013 Texas Instruments
Data Converters
Digital-to-Analog Converters – String and R2R DACs
12-/14-/16-Bit, Dual-Ch, Voltage-Output DAC in Tiny QFN-10 and MSOP-10 Packages
DAC8562, DAC8162, DAC7562
This is a family of low-power, voltage-output, dual-channel, 12/14/16-bit DACs. These
devices include a 2.5 V, 2ppm/°C internal reference, giving a full-scale output voltage
range of 2.5 V or 5 V. The internal reference has an initial accuracy of 1 mV and can
source up to 20 mA at the V
REFIN
/V
REFOUT
pin. These devices are monotonic, provid-
ing excellent linearity and minimizing undesired code-to-code transient voltages (glitch).
The
three-wireserialinterfaceiscompatiblewithstandardSPI,QSPI,Microwire™and
digital signal processor (DSP) interfaces.
Key Features
• Designedforlowpowerperformance
in tiny packages
DAC7562 (12-bit): 0.3 LSB INL
DAC8162 (14-bit): 1 LSB INL
DAC8562 (16-bit): 4 LSB INL
2.5 V internal reference with
5 ppm/°C max. drift
Ultra-Low glitch energy 0.1 nV-sec
Power consumption: 0.27 mW/ch
• Widetemprange:–40°Cto+125°C
• Tinypackages:10-pinQFN(3x3mm),
10-pin MSOP (3x5mm)
Applications
• Portableinstrumentation
• Closed-loopservo/processcontrol
• Data-acquisitionsystems
• Programmableattenuation,digitalgain
and offset adjustment
• Programmablevoltage/current sources
Get more information: www.ti.com/product/Part Number
(DAC8562, DAC8162, DAC7562)
DAC7562
DAC8162
DAC8562
(12-Bit)
(14-Bit)
(16-Bit)
Data Buffer A
DAC Register A
Buffer Control
Control Logic
Power-
Down
Control
Logic
AV
DD
V
REFIN REFOUT
/V
CLRLDAC
2.5-V
Reference
Data Buffer B
DAC Register B
V B
OUT
V A
OUT
GND
Input Control Logic
SYNC
SCLK
D
IN
DAC
DAC
Register Control
DAC7562, DAC8162, DAC8562 functional block diagram
DAC7568
DAC8168
DAC8568
Power-Down
AV
DD
V
REF REF
IN/ V OUT
12-/14-/16-Bit
DAC
CLR
LDACGND
D
IN
SCLK
SYNC
2.5 V
Reference
12-/14-/16-Bit
DAC
V H
OUT
V A
OUT
16-Bit, Octal, Low Glitch, Low Power DAC with 2 ppm/°C Temp Drift Internal Reference
DAC8568
The DAC8568 family are low power, 8-channel 12-/14-/16-bit DACs that include a
2.5 V, 2ppm/°C integrated reference, giving a full scale output voltage of 2.5 or 5 V.
Outperforming the competition with DAC features such as ultra-low glitch, excellent INL,
lowest power dissipation, an integrated reference with 0.004% initial accuracy and capa
-
bility to source up to 20 mA at the V
REFIN
/V
REFOUT
pin, this family offers a powerful system
solution. The DAC8568 family offers Binary Input and either Power-On-Reset to Zero or
Mid-scale. These products are great for precision applications where high channel count,
integration of features, small size and low power are paramount considerations.
DAC8568 functional block diagram
Key Features
• Highaccuracyacrosstemperature
DNL: ±0.5 LSB, INL: ±4 LSB at
16-bits
Low glitch energy: 0.1 nV-s typ
Reference drift 2 ppm/°C (typ);
Wide temp range: –40°C to +105°C
•
Highintegrationinsmallpackage
Eight DACs in TSSOP-16/14
packages
Integrated reference 2.5 V
Power on reset to zero/mid-scale
• Availablein12/14/16-bitversions
Applications
• Automatictestequipment
• Portableinstrumentation
• Precisionwaveformgeneration
• Industrialprocesscontrol
• Medicalequipment
Get more information: www.ti.com/product/DAC8568