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(yè)數(shù): 14/16頁(yè)
文件大?。?/td> 683K
代理商: AD5556CRU
AD5546/AD5556
Rev. 0 | Page 14 of 16
C8
0.1
μ
F
C9
1
μ
F
–5V
0
16/14-BIT
2
+5V
5
6
+2.5V
4
GND
VIN
TRIM
U3
ADR03
VOUT
VDD
R1
ROFS
ROFSA
VOUT
0V TO +2.5V
RFB
RFBA
C6
GND
U1
AD5546/AD5556
IOUT
R2
RCOMA
R1A
16/14 DATA
REFA
U2B
AD8628
V–
+
C4
1
μ
F
C5
0.1
μ
F
+5V
WR
WR
LDAC
LDAC
RS
RS
MSB
MSB
C2
0.1
F
C1
1
F
C3
0.1
μ
F
V+
U2A
AD8628
V–
+
C7
–2.5V
V+
Figure 22. Unipolar 2-Quadrant Multiplying Mode, V
OUT
= 0 to +V
REF
0
16/14-BIT
2
+15V
5
6
4
GND
VIN
TRIM
U3
ADR01
VOUT
VDD
R1
ROFS
ROF
VOUT
–10V TO +10V
RFB
RFB
C9
GND
U1
AD5546/AD5556
IOUT
R2
RCOM
R1
16/14 DATA
REF
U2B
AD8512
V–
+
C4
1
μ
F
C5
0.1
μ
F
C6
0.1
μ
F
C7
1
μ
F
+15V
–15V
WR
WR
LDAC
LDAC
RS
MSB
RS
MSB
C2
0.1
μ
F
C1
1
μ
F
C3
0.1
μ
F
V+
U2A
AD8512
+
C8
+10V
–10V
+5V
Figure 23. 4-Quadrant Multiplying Mode, V
OUT
= –V
REF
to +V
REF
BIPOLAR MODE
4-Quadrant Multiplying Mode, V
OUT
= –V
REF
to +V
REF
The AD5546/AD5556 contain on-chip all the 4-quadrant
resistors necessary for the 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.
V
OUT
= (D/32768
1) × V
REF
(AD5546)
V
OUT
= (D/16384
1) × V
REF
(AD5556)
(5)
(6)
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