DAC8565
www.ti.com
SBAS411C –JUNE 2007–REVISED MARCH 2011
16-Bit, Quad Channel, Ultra-Low Glitch, Voltage Output
Digital-to-Analog Converter with 2.5V, 2ppm/°C Internal Reference
Check for Samples: DAC8565
1
FEATURES
DESCRIPTION
The DAC8565 is
four-channel, 16-bit digital-to-analog converter (DAC).
The device includes 2.5V, 2ppm/°C internal
a
low-power, voltage-output,
234
•
Relative Accuracy: 4LSB
Glitch Energy: 0.15nV-s
Internal Reference:
•
•
a
reference (enabled by default), giving a full-scale
output voltage range of 2.5V. The internal reference
has an initial accuracy of 0.004% and can source up
to 20mA at the VREFH/VREFOUT pin. The device is
monotonic, provides very good linearity, and
minimizes undesired code-to-code transient voltages
(glitch). The DAC8565 use a versatile 3-wire serial
interface that operates at clock rates up to 50MHz. It
is compatible with standard SPI™, QSPI™,
Microwire™, and digital signal processor (DSP)
interfaces.
–
–
–
–
–
2.5V Reference Voltage (enabled 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
Asynchronous Clear to Zero-Scale or Midscale
Ultra-Low Power Operation: 1mA at 5V
The DAC8565 incorporates 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. The device contains a power-down
feature, accessed over the serial interface, that
reduces the current consumption of the device to
1.3μA at 5V. The low power consumption, internal
reference, and small footprint make this device ideal
for portable, battery-operated equipment. The power
consumption is 2.9mW at 3V, reducing to 1.5μW in
power-down mode.
Wide Power Supply Range: +2.7V to +5.5V
16-Bit Monotonic Over Temperature Range
Settling Time: 10μs to ±0.003% Full-Scale
Range (FSR)
•
•
Low-Power Serial Interface with
Schmitt-Triggered Inputs: Up to 50MHz
On-Chip Output Buffer Amplifier with
Rail-to-Rail Operation
•
•
1.8V to 5.5V Logic Compatibility
Temperature Range: –40°C to +105°C
The DAC8565 is drop-in and functionally compatible
with the DAC7564 and DAC8164, and functionally
compatible with the DAC7565, DAC8165, and
DAC8564. All these devices are available in a
TSSOP-16 package.
APPLICATIONS
•
•
•
•
•
•
Portable Instrumentation
Closed-Loop Servo-Control
Process Control, PLCs
Data Acquisition Systems
Programmable Attenuation
PC Peripherals
IOVDD
AVDD
VREFL
DAC8565
DAC Register A
VOUTA
VOUTB
VOUTC
VOUTD
Data Buffer A
16-Bit DAC
DAC Register B
DAC Register C
DAC Register D
Data Buffer B
Data Buffer C
Data Buffer D
16-Bit DAC
16-Bit DAC
16-Bit DAC
RELATED
DEVICES
16-BIT
14-BIT
12-BIT
SYNC
SCLK
DIN
Register
Control
Buffer
Control
Pin and
Functionally
Compatible
24-Bit Shift Register
Power-Down
Control Logic
2.5V
Reference
DAC8565
DAC8165
DAC7565
Control Logic
GND
RST
RSTSEL
LDAC
ENABLE
VREFH/VREFOUT
Functionally
Compatible
DAC8564
DAC8164
DAC7564
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
3
4
SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2011, Texas Instruments Incorporated