AD5541 Datasheet, PDF (1/12 Pages) Analog Devices – 5 V, Serial-Input Voltage-Output, 16-Bit DACs

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5 V, Serial-Input
Voltage-Output, 16-Bit DACs
AD5541/AD5542
FEATURES
Full 16-Bit Performance
5 V Single Supply Operation
Low Power
Short Settling Time
Unbuffered Voltage Output Capable of Driving 60 k⍀
Loads Directly
SPI™/QSPI™/MICROWIRE™-Compatible Interface
Standards
Power-On Reset Clears DAC Output to 0 V (Unipolar
Mode)
Schmitt Trigger Inputs for Direct Optocoupler Interface
APPLICATIONS
Digital Gain and Offset Adjustment
Automatic Test Equipment
Data Acquisition Systems
Industrial Process Control
GENERAL DESCRIPTION
The AD5541 and AD5542 are single, 16-bit, serial input,
voltage output DACs that operate from a single 5 V ± 10%
supply.
The AD5541 and AD5542 utilize a versatile 3-wire interface that
is compatible with SPI, QSPI, MICROWIRE, and DSP inter-
face standards.
These DACs provide 16-bit performance without any adjust-
ments. The DAC output is unbuffered, which reduces power
consumption and offset errors contributed to by an output buffer.
The AD5542 can be operated in bipolar mode generating a
± V_REF output swing. The AD5542 also includes Kelvin sense
connections for the reference and analog ground pins to reduce
layout sensitivity.
The AD5541 and AD5542 are available in an SO package.
FUNCTIONAL BLOCK DIAGRAMS
AD5541
REF
V_DD
16-BIT DAC
V_OUT
CS
DIN
SCLK
CONTROL
LOGIC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
AGND
REFF
REFS
CS
LDAC
SCLK
DIN
AD5542
R_INV
CONTROL
LOGIC
DGND
V_DD
R_FB
16-BIT DAC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
DGND
RFB
INV
V_OUT
AGNDF
AGNDS
PRODUCT HIGHLIGHTS
1. Single Supply Operation.
The AD5541 and AD5542 are fully specified and guaranteed
for a single 5 V ± 10% supply.
2. Low Power Consumption.
These parts consume typically 1.5 mW with a 5 V supply.
3. 3-Wire Serial Interface.
4. Unbuffered output capable of driving 60 kΩ loads.
This reduces power consumption as there is no internal buffer
to drive.
5. Power-On Reset circuitry.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
REV. A
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 rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
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© Analog Devices, Inc., 1999