參數(shù)資料
型號: AD5547BRUZ
廠商: Analog Devices Inc
文件頁數(shù): 9/20頁
文件大?。?/td> 0K
描述: IC DAC 16BIT DUAL 38-TSSOP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
設(shè)計資源: 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)
標準包裝: 50
設(shè)置時間: 500ns
位數(shù): 16
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
電壓電源: 單電源
功率耗散(最大): 55µW
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 38-TFSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 38-TSSOP
包裝: 管件
輸出數(shù)目和類型: 2 電流,單極;2 電流,雙極
采樣率(每秒): 2M
產(chǎn)品目錄頁面: 783 (CN2011-ZH PDF)
Data Sheet
AD5547/AD5557
Rev. D | Page 17 of 20
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 ±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 a one-time programmable
(OTP), 8-bit adjustment that is ideal and reliable for such
calibration. Analog Devices, Inc., OTP digital potentiometer
comes with programmable software that simplifies factory
calibration.
WR
RS
2
LDAC
04452-
008
AD5547/AD5557
16/14 DATA
VDD
ROFSA
RFBA
C6
RFB
ROFS
MSB A0, A1
IOUTA
AGNDA
C2
0.1F
C1
1F
VOUTA
MSB
A0, A1
LDAC
+10V
–10V
+5V
OP2177
C7
R1A
RCOMA
R2
R1
VREFA
16-/14-BIT
C4
+15V
U2B
1F
0.1F
C5
C8
1F
0.1F
C9
OP2177
+V
–V
U2A
U1
–15V
Figure 24. Signal Attenuator with AC Reference
WR
RS
2
LDAC
04452-
009
AD5547/AD5557
16/14 DATA
VDD
ROFSA
RFBA
C6
RFB
ROFS
MSB A0, A1
IOUTA
U2B
+5V
AGNDA
C1
1F
C2
0.1F
C3
0.1F
VOUTA
MSB
A0, A1
LDAC
REF 01/AD
4
5
10k
1k
6
U3
AD5170
R7
R3
+2.5V
U4
U2
B
470k
2
+5V
0V TO +2.5V
–2.5V
AD8628
C7
R1A
RCOMA
R2
U1
R1
VREFA
16-/14-BIT
GND
ADR03
VOUT
TRIM
VIN
C4
1F
0.1F
C5
AD8628
+V
–V
Figure 25. Full-Span Calibration
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