AD5763CSUZ(RevC) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD5763CSUZ Datasheet PDF : 28 Pages
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AD5763
APPLICATIONS INFORMATION
BIN/2sCOMP
+5V
10µF
100nF
ADR420
2 VIN
VOUT 6
GND
4
+5V –5V
10µF
100nF
10µF
100nF
100nF
+5V
32 31 30 29 28 27 26 25
SYNC
SCLK
SDIN
SDO
LDAC
D0
D1
1 SYNC
2 SCLK
3 SDIN
4 SDO
5 CLR
6 LDAC
7 D0
8 D1
AD5763
NC 24
NC 23
VOUTA 22
AGNDA 21
AGNDB 20
VOUTB 19
NC 18
NC 17
VOUTA
VOUTB
Data Sheet
RSTOUT
RSTIN
9 10 11 12 13 14 15 16
10µF
100nF
NC = NO CONNECT
+5V
10µF
+5V –5V
Figure 29. Typical Operating Circuit
TYPICAL OPERATING CIRCUIT
Figure 29 shows the typical operating circuit for the AD5763.
The only external components needed for this precision 16-bit
DAC are a reference voltage source, decoupling capacitors on
the supply pins and reference inputs, and an optional short-
circuit current setting resistor. Because the device incorporates
reference buffers, it eliminates the need for an external bipolar
reference and associated buffers. This leads to overall savings in
both cost and board space.
In Figure 29, AVDD is connected to +5 V and AVSS is connected
to −5 V and AGNDA and AGNDB are connected to REFGND.
Precision Voltage Reference Selection
To achieve the optimum performance from the AD5763 over its
full operating temperature range, a precision voltage reference
must be used. Give thought to the selection of a precision volt-
age reference. The AD5763 has two reference inputs, REFA and
REFB. The voltages applied to the reference inputs are used to
provide a buffered positive and negative reference for the DAC
cores. Therefore, any error in the voltage reference is reflected
in the outputs of the device.
There are four possible sources of error to consider when
choosing a voltage reference for high accuracy applications:
initial accuracy, temperature coefficient of the output voltage,
long term drift, and output voltage noise.
Rev. C | Page 24 of 28
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