參數(shù)資料
型號(hào)： SPT5400SCP
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： DAC
英文描述： 13-BIT, OCTAL VOLTAGE-OUTPUT DAC WITH PARALLEL INTERFACE
中文描述： PARALLEL, WORD INPUT LOADING, 7 us SETTLING TIME, 13-BIT DAC, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 6/8頁(yè)
文件大小： 73K
代理商： SPT5400SCP
6
5/15/00
SPT5400
The relationship between the reference, AGNDxx and
output voltage is shown in table V.
Table V – Relationship between Reference, AGNDxx and Output
POSITIVE
BIPOLAR OPERATION
(AGNDxx = 0 V)
AGNDxx = 0 V
UNIPOLAR OPERATION
(AGND = REFxx/2)
AGNDxx = REFxx/2
PARAMETER
Bipolar Zero Level or Unipolar Mid-Scale
(Code = 1000000000000)
Differential Reference Voltage (VDR)
Negative Full-Scale Output (Code = All 0s)
Positive Full-Scale Output (Code = All 1s)
LSB Weight
V
OUT
xx as a Function of Digital Code
(D, 0 to 8191)
CUSTOM OPERATION
AGNDxx
REFxx
–REFxx
REFxx/2
0 V
REF – AGNDxx
AGNDxx – VDR
AGNDxx + (4095/4096)(VDR)
(VDR/4096)
AGNDxx + ((D/4096)–1)(VDR)
(4095/4096)(REFxx)
(REFxx/4096)
((D/4096)–1)(REFxx)
(8191/8192)(REFxx)
(REFxx/8192)
(D/8192)(REFxx)
Figure 2 – Typical Interface Circuit (shown for unipolar operation)
R
+
–
R
+
–
C2
C2
AGNDxx
1 k
1 k
+
REF
FB
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0 (LSB)
V
DD
V
DD
V
SS
V
SS
GND
C1
+A5 V
C1
-A5 V
C
CMOS/TTL Control Source
A
A
A
W
C
C
L
L
L
L
V
OUT
A
V
OUT
B
V
OUT
C
V
OUT
D
V
OUT
E
V
OUT
F
V
OUT
G
V
OUT
H
A
For Bipolar Operation
AGNDxx
REFxx
C2
SPT5400
Notes
R = 22
C1 = 1.0
μ
F
C2 = 0.1
μ
F
REF = 0 – V
DD
V
FB = Ferrite Bead
R
R
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