参数资料
型号: AD5763CSUZ-REEL7
厂商: Analog Devices Inc
文件页数: 17/28页
文件大小: 0K
描述: DAC 16BIT DUAL 5V 2LSB 32-TQFP
产品培训模块: Data Converter Fundamentals
DAC Architectures
产品变化通告: AD5763/65 Metal Layer Edit Change 08/Sept/2009
设计资源: High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using AD5763 (CN0074)
标准包装: 500
设置时间: 8µs
位数: 16
数据接口: 串行
转换器数目: 2
电压电源: 双 ±
功率耗散(最大): 45mW
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(7x7)
包装: 带卷 (TR)
输出数目和类型: 2 电压,双极
采样率(每秒): *
AD5763
Data Sheet
Rev. C | Page 24 of 28
APPLICATIONS INFORMATION
07
25
0-
03
5
1
2
3
4
5
6
7
8
23
22
21
18
19
20
24
17
9
10 11 12 13 14 15 16
32 31 30 29 28 27 26 25
AD5763
SYNC
SCLK
SDIN
SDO
D0
LDAC
CLR
D1
NC
VOUTA
AGNDA
NC
VOUTB
AGNDB
NC
RS
T
O
UT
RS
T
IN
DG
ND
DV
CC
AV
DD
PG
N
D
AV
SS
IS
C
BI
N/
2s
C
O
M
P
AV
DD
AV
SS
TE
M
P
RE
F
G
ND
NC
RE
F
B
RE
F
A
SYNC
SCLK
SDIN
SDO
LDAC
D0
D1
RSTOUT
RSTIN
BIN/2sCOMP
+5V
–5V
NC = NO CONNECT
+5V –5V
VOUTA
VOUTB
100nF
100n
F
100n
F
10F
100nF
10F
100nF
10F
10
F
10F
100nF
10F
ADR420
4
GND
2
6
VOUT
VIN
+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.
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