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AD5547 Datasheet

  • AD5547

  • Dual Current Output, Parallel Input, 16-/14-Bit Multiplying ...

  • 1456.17KB

  • 22頁(yè)

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AD5547/AD5557
AC Reference Signal Attenuator
Besides handling the digital waveform decoded from the
parallel input data, the AD5547/AD5557 can also handle low
frequency ac reference signals for signal attenuation, channel
equalization, and waveform generation applications. The
maximum signal range can be up to 鹵18 V (See Figure 25).
System Calibration
The initial accuracy of the system can be adjusted by trimming
the voltage reference ADR0x with a digital potentiometer (see
Figure 26). The AD5170 provides a one-time programmable
(OTP), 8-bit adjustment that is ideal and reliable for such
calibration. ADI鈥檚 OTP digital potentiometer comes with
programmable software that simplifies factory calibration.
U2A
OP2177
+10V
鈥?0V
R
1A
+5V
VDD
C1
1碌F
C2
0.1碌F
R1
R
COMA
V
REFA
R
OFSA
ROFS
16-/14-BIT
R
FBA
RFB
I
OUTA
AGNDA
C7
+15V
C4
C6
U2B
1碌F
R2
C5 0.1碌F
AD5547/AD5557
U1
+V
OP2177
鈥揤
C8
1碌F
V
OUTA
16/14 DATA
WR LDAC RS
WR
LDAC
RS
MSB
A0, A1
MSB A0, A1
C9 0.1碌F
04452-0-008
2
鈥?5V
Figure 25. Signal Attenuator with AC Reference
+5V
C1
1碌F
C2
0.1碌F
2
U3
VIN
TRIM
VOUT
GND
4
ADR03
5
6
AD5170
R3
U4
10k鈩?/div>
470k鈩?B
R7
1k鈩?/div>
U2
AD8628
C7
+2.5V
+5V
R
1A
VDD
R1
R
COMA
R2
V
REFA
R
OFSA
ROFS
16-/14-BIT
R
FBA
RFB
I
OUTA
AGNDA
C4
C6
U2B
1碌F
鈥?.5V
C5 0.1碌F
C3
0.1碌F
AD5547/AD5557
U1
WR LDAC RS
MSB A0, A1
+V
V
OUTA
0V TO +2.5V
AD8628
鈥揤
16/14 DATA
WR
LDAC
RS
REF 01/AD
MSB
A0, A1
2
Figure 26. Full-Span Calibration
Rev. 0 | Page 17 of 20
04452-0-009

AD5547 PDF文件相關(guān)型號(hào)

AD5557

AD5547相關(guān)型號(hào)PDF文件下載

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