参数资料
型号: AD5547CRUZ-REEL7
厂商: Analog Devices Inc
文件页数: 8/20页
文件大小: 0K
描述: IC DAC 16BIT PAR DUAL 38TSSOP
设计资源: Precision, Unipolar, Inverting Conversion Using AD5547/57 DAC (CN0026)
Precision, Unipolar, Noninverting Configuration for the AD5547/57 DAC (CN0027)
Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028)
标准包装: 1,000
设置时间: 500ns
位数: 16
数据接口: 并联
转换器数目: 2
电压电源: 单电源
功率耗散(最大): 55µW
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 38-TFSOP(0.173",4.40mm 宽)
供应商设备封装: 38-TSSOP
包装: 带卷 (TR)
输出数目和类型: 2 电流,单极;2 电流,双极
采样率(每秒): 2M
AD5547/AD5557
Data Sheet
Rev. D | Page 16 of 20
BIPOLAR MODE
4-Quadrant Multiplying Mode, VOUT = –VREF to +VREF
The AD5547/AD5557 contain on-chip all the 4-quadrant
resistors necessary for precision bipolar multiplying operation.
Such a feature minimizes the number of exponent components
to only a voltage reference, dual op amp, and compensation
capacitor (see Figure 23). For example, with a +10 V reference,
the circuit yields a precision, bipolar –10 V to +10 V output.
VOUT = (D/32768 1) × VREF (AD5547)
(5)
VOUT = (D/16384 1) × VREF (AD5557)
(6)
Table 9 shows some of the results for the 16-bit AD5547.
Table 9. AD5547 Output vs. Code
D in Binary
V
OUT
1111 1111 1111 1111
+V
REF (32,767/32,768)
1000 0000 0000 0001
+V
REF (1/32,768)
1000 0000 0000 0000
0
0111 1111 1111 1111
–V
REF (1/32,768)
0000 0000 0000 0000
–V
REF
WR
RS
C6 0.1F
C7 1F
2
+10V
–10V
–15V
–10V TO +10V
+15V
04452-
006
AD8512
AD5547/AD5557
C8
U2A
R1A
16/14 DATA
VDD
RCOMA
R2
U1
R1
ROFSA
RFBA
C9
RFB
ROFS
MSB
A0, A1
IOUTA
AGNDA
U2B
C4 1F
C1
1F
C2
0.1F
C3
0.1F
C5 0.1F
VOUT
VREFA
MSB
A0, A1
LDAC
+V
–V
GND
ADR01
4
VOUT
TRIM
5
6
VIN
U3
2
+15V
+5V
16-/14-BIT
DAC A
Figure 23. 4-Quadrant Multiplying Mode, VOUT = –VREF to +VREF
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