Datenblatt-pdf.com


AD5541 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD5541
Beschreibung 5 V/ Serial-Input Voltage-Output/ 16-Bit DACs
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
AD5541 Datasheet, Funktion
a
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
± VREF 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
VDD
16-BIT DAC
VOUT
CS
DIN
SCLK
CONTROL
LOGIC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
AGND
REFF
REFS
CS
LDAC
SCLK
DIN
AD5542
RINV
CONTROL
LOGIC
DGND
VDD
RFB
16-BIT DAC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
DGND
RFB
INV
VOUT
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 kloads.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999






AD5541 Datasheet, Funktion
AD5541/AD5542
TERMINOLOGY
Relative Accuracy
For the DAC, relative accuracy or integral nonlinearity (INL)
is a measure of the maximum deviation, in LSBs, from a straight
line passing through the endpoints of the DAC transfer function.
A typical INL versus code plot can be seen in Figure 2.
Differential Nonlinearity
Differential nonlinearity is the difference between the measured
change and the ideal 1 LSB change between any two adjacent
codes. A specified differential nonlinearity of ± 1 LSB maximum
ensures monotonicity. Figure 3 illustrates a typical DNL versus
code plot.
Gain Error
Gain error is the difference between the actual and ideal analog
output range, expressed as a percent of the full-scale range.
It is the deviation in slope of the DAC transfer characteristic
from ideal.
Gain Error Temperature Coefficient
This is a measure of the change in gain error with changes in
temperature. It is expressed in ppm/°C.
Zero Code Error
Zero code error is a measure of the output error when zero code
is loaded to the DAC register.
Zero Code Temperature Coefficient
This is a measure of the change in zero code error with a change
in temperature. It is expressed in mV/°C.
Digital-to-Analog Glitch Impulse
Digital-to-analog glitch impulse is the impulse injected into the
analog output when the input code in the DAC register changes
state. It is normally specified as the area of the glitch in nV-s
and is measured when the digital input code is changed by 1 LSB
at the major carry transition. A plot of the glitch impulse is shown
in Figure 15.
Digital Feedthrough
Digital feedthrough is a measure of the impulse injected into the
analog output of the DAC from the digital inputs of the DAC,
but is measured when the DAC output is not updated. CS is
held high, while the CLK and DIN signals are toggled. It is
specified in nV-s and is measured with a full-scale code change
on the data bus, i.e., from all 0s to all 1s and vice versa. A typi-
cal plot of digital feedthrough is shown in Figure 14.
Power Supply Rejection Ratio
This specification indicates how the output of the DAC is affected
by changes in the power supply voltage. Power-supply rejection
ratio is quoted in terms of % change in output per % change in
VDD for full-scale output of the DAC. VDD is varied by ± 10%.
Reference Feedthrough
This is a measure of the feedthrough from the VREF input to the
DAC output when the DAC is loaded with all 0s. A 100 kHz,
1 V p-p is applied to VREF. Reference feedthrough is expressed
in mV p-p.
–6– REV. A

6 Page









AD5541 pdf, datenblatt
AD5541/AD5542
APPLICATIONS
Optocoupler interface
The digital inputs of the AD5541/AD5542 are Schmitt-
triggered, so they can accept slow transitions on the digital input
lines. This makes these parts ideal for industrial applications
where it may be necessary that the DAC is isolated from the
controller via optocouplers. Figure 25 illustrates such an interface.
POWER
SCLK
CS
DIN
5V
REGULATOR
10F
0.1F
VDD
10k
SCLK
VDD
VDD
10k
VDD
AD5541/AD5542
CS VOUT
10k
DIN
GND
Figure 25. AD5541/AD5542 in an Optocoupler Interface
Decoding Multiple AD5541/AD5542s
The CS pin of the AD5541/AD5542 can be used to select one
of a number of DACs. All devices receive the same serial clock
and serial data, but only one device will receive the CS signal at
any one time. The DAC addressed will be determined by the
decoder. There will be some digital feedthrough from the digital
input lines. Using a burst clock will minimize the effects of digi-
tal feedthrough on the analog signal channels. Figure 26 shows a
typical circuit.
SCLK
DIN
VDD
AD5541/AD5542
CS
VOUT
DIN
SCLK
ENABLE
CODED
ADDRESS
EN
DECODER
DGND
AD5541/AD5542
CS
VOUT
DIN
SCLK
AD5541/AD5542
CS
VOUT
DIN
SCLK
AD5541/AD5542
CS
DIN
SCLK
VOUT
Figure 26. Addressing Multiple AD5541/AD5542s
8-Lead SO
(SO-8)
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
14-Lead SO
(R-14)
0.1968 (5.00)
0.1890 (4.80)
8
0.1574 (4.00)
0.1497 (3.80) 1
5
0.2440 (6.20)
4 0.2284 (5.80)
PIN 1
0.0500 (1.27)
BSC
0.0196 (0.50)
0.0099 (0.25) ؋ 45؇
0.0098 (0.25)
0.0040 (0.10)
SEATING
PLANE
0.0688 (1.75)
0.0532 (1.35)
8؇
0.0192 (0.49)
0.0098 (0.25) 0؇
0.0138 (0.35)
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
0.3444 (8.75)
0.3367 (8.55)
0.1574 (4.00) 14
0.1497 (3.80)
1
8 0.2440 (6.20)
0.2284 (5.80)
7
PIN 1 0.050 (1.27) 0.0688 (1.75)
BSC
0.0532 (1.35)
0.0196 (0.50)
0.0099 (0.25)؋ 45؇
0.0098 (0.25)
0.0040 (0.10)
8؇
0.0192 (0.49)
0.0138 (0.35)
SEATING
PLANE
0.0099 (0.25) 0؇
0.0075 (0.19)
0.0500 (1.27)
0.0160 (0.41)
–12–
REV. A

12 Page





SeitenGesamt 12 Seiten
PDF Download[ AD5541 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
AD55415 V/ Serial-Input Voltage-Output/ 16-Bit DACsAnalog Devices
Analog Devices
AD5541A(AD5512A - AD5542A) 16-/12-Bit NanoDACAnalog Devices
Analog Devices
AD55425 V/ Serial-Input Voltage-Output/ 16-Bit DACsAnalog Devices
Analog Devices
AD5542A(AD5512A - AD5542A) 16-/12-Bit NanoDACAnalog Devices
Analog Devices
AD5543Current Output/ Serial Input/ 16-/14-Bit DACAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche