參數(shù)資料
型號(hào)： AD28MSP02KR
廠商： ANALOG DEVICES INC
元件分類(lèi)： 消費(fèi)家電
英文描述： ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86%
中文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： SOIC-28
文件頁(yè)數(shù)： 8/20頁(yè)
文件大?。?/td> 330K
代理商： AD28MSP02KR
AD28msp02
REV. 0
–8–
To select values for the components shown in Figure 7, use the
following equations:
Gain
=
R
FB
R
IN
C
IN
=
1
60
π
R
IN
C
FB
=
1
(2
π
)(20
×
10
3
)
R
FB
10 k
≤
R
FB
, R
IN
≤
50 k
150 pF
≤
C
FB
≤
600 pF
Figure 8 shows an example of a typical input circuit configured
for 0 dB gain. The circuit’s diodes are used to prevent the input
signal from exceeding maximum limits.
1.0μF
330pF
INPUT
SIGNAL
V
CC
GND
A
MUX
VOLTAGE
REFERENCE
VFB
AUX
VIN
AUX
AD28msp02
20k
10k
10k
VFB
NORM
VIN
NORM
Figure 8. Example Analog Input Circuit for 0 dB Gain
Analog Output
The AD28msp02’s differential analog output (VOUT
P
, VOUT
N
)
is produced by an on-chip differential amplifier. The differential
amplifier can drive a minimum load of 2 k
(R
L
≥
2 k
) and
has a maximum differential output voltage swing of
±
3.156 V
peak-to-peak (3.17 dBm0). The differential output can be
ac-coupled directly to a load or dc-coupled to an external
amplifier.
Figure 9 shows a simple circuit providing a differential output
with ac coupling. The capacitor of this circuit (C
OUT
) is
optional; if used, its value can be chosen as follows:
C
OUT
=
1
(60
π
)
R
L
C
OUT
C
OUT
VOUT
P
VOUT
N
R
L
AD28msp02
Figure 9. Example Circuit for Differential Output
The VOUT
P
–VOUT
N
outputs must be used as differential out-
puts; do not use either as a single-ended output. Figure 10
shows an example circuit which can be used to convert the dif-
ferential output to a single-ended output. The circuit uses a
differential-to-single-ended amplifier, the Analog Devices
SSM2141.
SSM2141
1
5
7
4
+12 V
0.1
μ
F
0.1
μ
F
–12 V
V
OUT
AD28msp02
VOUT
P
VOUT
N
GND
A
GND
A
GND
A
Figure 10. Example Circuit for Single-Ended Output
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