4-Quadrant Multiplying Mode, VOUT
參數(shù)資料
型號(hào): AD5557CRU-REEL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 8/20頁(yè)
文件大小: 0K
描述: IC DAC 14BIT 2CH I OUT 38TSSOP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
設(shè)計(jì)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(biāo)準(zhǔn)包裝: 1,000
設(shè)置時(shí)間: 500ns
位數(shù): 14
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: 帶卷 (TR)
輸出數(shù)目和類型: 2 電流,單極;2 電流,雙極
采樣率(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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