參數(shù)資料
型號(hào): AD5556CRU
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors
中文描述: PARALLEL, WORD INPUT LOADING, 0.5 us SETTLING TIME, 14-BIT DAC, PDSO28
封裝: MO-153AE, TSSOP-28
文件頁數(shù): 15/16頁
文件大?。?/td> 683K
代理商: AD5556CRU
AD5546/AD5556
Table 10 shows some of the results for the 16-bit AD5546.
Table 10. AD5546 Output vs. Code
D in Binary
1111 1111 1111 1111
1000 0000 0000 0001
1000 0000 0000 0000
0111 1111 1111 1111
0000 0000 0000 0000
AC REFERENCE SIGNAL ATTENUATOR
Besides handling digital waveforms decoded from parallel input
data, the AD5546/AD5556 handle equally well low frequency
Rev. 0 | Page 15 of 16
V
OUT
+V
REF
(32,767/32,768)
+V
REF
(1/32,768)
0
–V
REF
(1/32,768)
–V
REF
ac reference signals for signal attenuation, channel equalization,
and waveform generation applications. The maximum signal
range can be up to ±18 V (see Figure 24).
SYSTEM CALIBRATION
The initial accuracy of the system can be adjusted by trimming
the voltage reference ADR0x with a digital potentiometer (see
Figure 25). The AD5170 provides an OTP (one time program-
mable), 8-bit adjustment that is ideal and reliable for such cali-
bration. ADI’s OTP digital potentiometer comes with program-
mable software that simplifies the factory calibration process.
0
16/14-BIT
VDD
ROFS
ROFSA
VOUT
RFB
RFBA
C6
GND
U1
AD5546/AD5556
IOUT
R2
R1
RCOMA
R1A
16/14 DATA
VREFA
U2B
OP2177
V–
+
C4
1
μ
F
C5
0.1
μ
F
C8
1
μ
F
C9
0.1
μ
F
+15V
–15V
WR
WR
LDAC
LDAC
RS
MSB
RS
MSB
C2
0.1
μ
F
C1
1
μ
F
V+
U2A
OP2177
+
C7
+5V
+10V
–10V
Figure 24. Signal Attenuator with AC Reference
C8
0.1
μ
F
C9
1
μ
F
–5V
0
16/14-BIT
2
+5V
5
6
4
GND
VIN
TRIM
U3
ADR03
VOUT
VDD
ROFS
R3
470k
AD5170
10k
B
R7
1k
ROFSA
VOUT
0V TO +2.5V
RFB
RFBA
C6
GND
U1
AD5546/AD5556
IOUT
R2
R1
RCOMA
R1A
+2.5V
16/14 DATA
VREFA
U2B
AD8628
V–
+
C4
1
μ
F
C5
0.1
μ
F
+5V
WR
WR
LDAC
LDAC
RS
RS
MSB
MSB
C2
0.1
μ
F
C1
1
μ
F
C3
0.1
μ
F
V+
U2A
AD8628
V–
+
C7
–2.5V
V+
Figure 25. Full Span Calibration
相關(guān)PDF資料
PDF描述
AD5556CRU-REEL7 Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors
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