16-Channel, 16-Bit/12-Bit
Voltage Output denseDACs
AD5766/AD5767
Data Sheet
voltage as low as −20 V or a maximum output voltage of up to
+14 V. Each of the 16 channels can be monitored with an
integrated output voltage multiplexer.
FEATURES
Complete 16-channel, 12-bit/16-bit DACs
8 software-programmable output ranges: −20 V to 0 V,
−16 V to 0 V, −10 V to 0 V, −10 V to +6 V, −12 V to +14 V,
−16 V to +10 V, ±± V and ±10 V
Integrated DAC output buffers with ±20 mA output current
capability
4 mm × 4 mm WLCSP package and 40-lead LFCSP package
Integrated reference buffers
2 dither signal input pins
The AD5766/AD5767 have integrated output buffers that can
sink or source up to 20 mA. In conjunction with these buffers, a
low frequency signal can be superimposed onto each DAC output
via dedicated dither pins. These dedicated dither pins simplify
the system design by reducing the number of external components
required for a similar external implementation, like operational
amplifiers or resistors. The reduction of external components
makes the AD5766/AD5767 suitable for indium phosphide Mach
Zehnder modulator (InP MZM) biasing applications.
Channel monitoring multiplexer
1.8 V logic compatibility
Temperature range: −40°C to +10±°C
The devices incorporate a power-on reset (POR) circuit that
ensures that the DAC outputs are clamped to ground on power
up and remain at this level until the output range of the DAC is
configured. The outputs of all DACs are updated through register
configuration, with the added functionality of user-selectable
DAC channels to be simultaneously updated.
APPLICATIONS
Mach Zehnder modulator bias control
Optical networking
Instrumentation
Industrial automation
Data acquisition systems
Analog output modules
The AD5766/AD5767 use a versatile 4-wire serial interface that
operates at clock rates of up to 50 MHz for write mode and is
compatible with serial peripheral interface (SPI), QSPI™,
MICROWIRE™, and DSP interface standards. The AD5766/
AD5767 also contain a VLOGIC pin intended for 1.8 V/3.3 V/5 V
logic.
GENERAL DESCRIPTION
The AD5766/AD5767 are 16-channel, 16-bit/12-bit, voltage output
denseDAC® digital-to-analog converters (DACs).
The DACs generate output voltage ranges from an external 2.5 V
reference. Depending on the voltage range selected, the midpoint
of the output span can be adjusted, allowing a minimum output
The AD5766/AD5767 are available in a 4 mm × 4 mm WLCSP
package and a 40-lead LFCSP package. The AD5766/AD5767
operate at a temperature range of −40°C to +105°C.
FUNCTIONAL BLOCK DIAGRAM
V
AV
AV
DD
REF
CC
V
0
OUT
RANGE
SET DAC
16-TO-1
MUX
AD5766/AD5767
MUX_OUT
V
LOGIC
V
15
OUT
n
n
n
DAC
INPUT
V
V
0
1
DAC 0
DAC 1
SDI
OUT
OUT
INPUT
REGISTER 0
REGISTER 0
SHIFT
REGISTER
AND
CONTROL
LOGIC
SCLK
SYNC
SDO
INPUT
REGISTER 1
DAC
REGISTER 1
RESET
DGND
n
INPUT
REGISTER 15
DAC
REGISTER 15
V
15
DAC 15
OUT
AV
AGND
SS
AGND
N0
N1
Figure 1.
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rightsof third parties that may result fromits use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks andregisteredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2017–2018 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com