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OP113FS-REEL Fiches technique(PDF) 16 Page - Analog Devices

No de pièce OP113FS-REEL
Description  Low Noise, Low Drift Single-Supply Operational Amplifiers
PDF  24 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

OP113FS-REEL Fiches technique(HTML) 16 Page - Analog Devices

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OP113/OP213/OP413
Rev. F | Page 16 of 24
8
1
4
3
2
2
OUTPUT
+
VS+ = 5V
12V
R1
5kΩ
R2
5kΩ
VS+
C2
1µF
R3
2.5kΩ
C1
0.1µF
R4
100Ω
–
+
1/2
OP213
Figure 46. False Ground Generator
LOW NOISE VOLTAGE REFERENCE
Few reference devices combine low noise and high output drive
capabilities. Figure 47 shows the OPx13 family used as a two-
pole active filter that band limits the noise of the 2.5 V reference.
Total noise measures 3 μV p-p.
8
1
4
3
2
1/2
OP213
5V
–
+
OUTPUT
2.5V
+
10kΩ
10kΩ
6
2
5V
IN
OUT
4
GND
REF43
–
+
3µV p-p NOISE
10µF
C2
10µF
Figure 47. Low Noise Voltage Reference
5 V ONLY STEREO DAC FOR MULTIMEDIA
The OPx13 family’s low noise and single supply capability are
ideally suited for stereo DAC audio reproduction or sound
synthesis applications such as multimedia systems. Figure 48
shows an 18-bit stereo DAC output setup that is powered from a
single 5 V supply. The low noise preserves the 18-bit dynamic
range of the AD1868. For DACs that operate on dual supplies,
the OPx13 family can also be powered from the same supplies.
18-BIT
DAC
18-BIT
DAC
VREF
VREF
AGND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VL
LL
DL
CK
DR
LR
DGND
VBR
VS
VOR
VOL
VBL
AD1868
8
1
47kΩ
+ –
100pF
7.68kΩ
7.68kΩ
7.68kΩ
7.68kΩ
330pF
9.76kΩ
330pF
9.76kΩ
6
5
7
100pF
47kΩ
+ –
5V SUPPLY
1/2
OP213
1/2
OP213
18-BIT
SERIAL
REG.
18-BIT
SERIAL
REG.
–
+
+
+
220µF
LEFT
CHANNEL
OUTPUT
+
–
–
+
3
2
4
RIGHT
CHANNEL
OUTPUT
220µF
Figure 48. 5 V Only 18-Bit Stereo DAC



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