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參數(shù)資料
| 型號： | OP213FSZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運算放大器 |
| 英文描述： | Low Noise, Low Drift Single-Supply Operational Amplifiers (Dual); Package: SOIC; No of Pins: 8; Temperature Range: Industrial |
| 中文描述： | DUAL OP-AMP, 325 uV OFFSET-MAX, 3.4 MHz BAND WIDTH, PDSO8 |
| 封裝： | ROHS COMPLIANT, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 9/24頁 |
| 文件大?。?/td> | 479K |
| 代理商： | OP213FSZ-REEL7 |
OP113/OP213/OP413
Rev. F | Page 17 of 24
LOW VOLTAGE HEADPHONE AMPLIFIERS
Figure 49 shows a stereo headphone output amplifier for the
AD1849 16-bit SOUNDPORT stereo codec device.1 The
pseudo-reference voltage is derived from the common-mode
voltage generated internally by the AD1849, thus providing a
convenient bias for the headphone output amplifiers.
5V
5k
OPTIONAL
GAIN
1k
5V
5k
29
19
31
10k
LOUT1L
LOUT1R
CMOUT
AD1849
16
47k
HEADPHONE
LEFT
HEADPHONE
RIGHT
16
47k
+
OPTIONAL
GAIN
1k
VREF
10F
VREF
10k
10F
L VOLUME
CONTROL
1/2
OP213
1/2
OP213
1/2
OP213
R VOLUME
CONTROL
VREF
220F
+
220F
–
+
–
+
–
+
00286-
048
Figure 49. Headphone Output Amplifier for Multimedia Sound Codec
LOW NOISE MICROPHONE AMPLIFIER FOR
MULTIMEDIA
The OPx13 family is ideally suited as a low noise microphone
preamp for low voltage audio applications. Figure 50 shows a
gain of 100 stereo preamp for the AD1849 16-bit SOUNDPORT
stereo codec chip. The common-mode output buffer serves as a
phantom power driver for the microphones.
5V
10k
50
20
100
10k
5V
20
50
10k
100
15
17
MINL
MINR
CMOUT
AD1849
19
LEFT
ELECTRET
CONDENSER
MIC
INPUT
10F
+
10F
+
1/2
OP213
1/2
OP213
–
+
RIGHT
ELECTRET
CONDENSER
MIC
INPUT
+
–
1/2
OP213
–
+
0
028
6-
049
Figure 50. Low Noise Stereo Microphone Amplifier for Multimedia Sound
Codec
PRECISION VOLTAGE COMPARATOR
With its PNP inputs and 0 V common-mode capability, the
OPx13 family can make useful voltage comparators. There is
only a slight penalty in speed in comparison to IC comparators.
However, the significant advantage is its voltage accuracy. For
example, VOS can be a few hundred microvolts or less, combined
with CMRR and PSRR exceeding 100 dB, while operating from
a 5 V supply. Standard comparators like the 111/311 family
operate on 5 V, but not with common mode at ground, nor with
offset below 3 mV. Indeed, no commercially available single-
supply comparator has a VOS less than 200 μV.
1 SOUNDPORT is a registered trademark of Analog Devices, Inc.
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| OP413ESZ | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
| OP413ESZ-REEL | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
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| OP413FSZ-REEL | Low Noise, Low Drift Single-Supply Operational Amplifier (Quad); Package: SOIC - Wide; No of Pins: 16; Temperature Range: Industrial |
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