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參數(shù)資料
| 型號： | INA2137PAG4 |
| 英文描述： | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB (G= 1/2 or 2) |
| 中文描述： | 音頻差分線路接收器【分貝（增益\u003d 1 / 2或2） |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 259K |
| 代理商： | INA2137PAG4 |
8
INA137, INA2137
The INA137 and INA2137 have excellent distortion charac-
teristics. THD+Noise is below 0.001% throughout the audio
frequency range. Up to approximately 10kHz distortion is
below the measurement limit of commonly used test equip-
ment. Furthermore, distortion remains relatively flat over its
wide output voltage swing range (approximately 1.7V from
either supply).
OFFSET VOLTAGE TRIM
The INA137 and INA2137 are laser trimmed for low offset
voltage and drift. Most applications require no external offset
adjustment. Figure 3 shows an optional circuit for trimming
the output offset voltage. The output is referred to the output
reference terminal (pin 1), which is normally grounded. A
voltage applied to the Ref terminal will be summed with the
output signal. This can be used to null offset voltage as
shown in Figure 3. The source impedance of a signal applied
to the Ref terminal should be less than 10
to maintain good
common-mode rejection.
APPLICATIONS INFORMATION
The INA137 and INA2137 are differential line receivers
suitable for a wide range of audio and general-purpose
applications. Figure 1 shows the basic G = 1/2 (–6dB)
differential receiver configuration. The input and feedback
resistors can be reversed to achieve G = 2 (+6dB), as shown
in Figure 2. For applications requiring G = 1 (0dB), the
INA134 and INA2134 are recommended.
Decoupling capacitors are strongly recommended for appli-
cations with noisy or high impedance power supplies. The
capacitors should be placed close to the device pins as
shown in Figure 1. All circuitry is completely independent
in the dual version assuring lowest crosstalk and normal
behavior when one amplifier is overdriven or short-cir-
cuited.
As shown in Figure 1, the differential input signal is con-
nected to pins 2 and 3. The source impedances connected to
the inputs must be nearly equal to assure good common-
mode rejection. A 5
mismatch in source impedance will
degrade the common-mode rejection of a typical device to
approximately 77dB (RTO). If the source has a known
impedance mismatch, an additional resistor in series with
the opposite input can be used to preserve good common-
mode rejection.
FIGURE 3. Offset Adjustment.
AUDIO PERFORMANCE
The INA137 and INA2137 were designed for enhanced ac
performance. Very low distortion, low noise, and wide band-
width provide superior performance in high quality audio
applications. Laser-trimmed matched resistors provide opti-
mum common-mode rejection (typically 90dB), especially
when compared to circuits implemented with an op amp
and discrete precision resistors. In addition, high slew rate
(14V/
μ
s) and fast settling time (3
μ
s to 0.01%) ensure excel-
lent dynamic performance.
V
3
5
6
1
3
INA137
V
O
= 1/2 (V
3
–
V
2
)
2
R
3
R
4
R
1
R
2
12k
6k
12k
6k
V
2
–In
+In
1μF
V–
4
1μF
V+
7
FIGURE 1. G = 1/2 Differential Receiver (Basic Power
Supply and Signal Connections).
V
3
2
6
3
1
INA137
V
O
= 2 (V
3
–
V
2
)
5
R
4
R
3
R
2
R
1
6k
12k
6k
12k
V
2
–In
+In
FIGURE 2. G = 2 Differential Receiver.
V
3
5
6
3
V
O
INA137
V
= 1/2 (V
–
V
2
)
Offset Adjustment
Range = ±1mV
G = 1/2
2
R
4
6k
V
2
20
250k
10
100k
+15V
–15V
1
R
3
12k
R
1
12k
R
2
6k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| INA2137UAE4 | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB (G= 1/2 or 2) |
| INA2137 | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB G = 1/2 or 2 |
| INA137 | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB G = 1/2 or 2 |
| INA137PA | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB G = 1/2 or 2 |
| INA2137PA | AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB G = 1/2 or 2 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA2137UA | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Aud Diff Line Rcvrs +-6dB (G=1/2 or 2) RoHS:否 制造商:Cirrus Logic 工作電源電壓:3.3 V, 5 V 電源電流:11.8 mA 通道數(shù)量:1 最大工作溫度:+ 70 C 接口類型:I2C, SPI 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-28 封裝: |
| INA2137UA | 制造商:Texas Instruments 功能描述:IC SM AMP DUAL DIFF LINE RECEIVER 制造商:Texas Instruments 功能描述:IC, SM AMP DUAL DIFF LINE RECEIVER |
| INA2137UA | 制造商:Texas Instruments 功能描述:IC SM AMP DUAL DIFF LINE RECEIVER |
| INA2137UA/2K5 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Aud Diff Line Rcvrs +-6dB (G=1/2 or 2) RoHS:否 制造商:Cirrus Logic 工作電源電壓:3.3 V, 5 V 電源電流:11.8 mA 通道數(shù)量:1 最大工作溫度:+ 70 C 接口類型:I2C, SPI 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-28 封裝: |
| INA2137UA/2K5E4 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Aud Diff Line Rcvrs +-6dB (G=1/2 or 2) RoHS:否 制造商:Cirrus Logic 工作電源電壓:3.3 V, 5 V 電源電流:11.8 mA 通道數(shù)量:1 最大工作溫度:+ 70 C 接口類型:I2C, SPI 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-28 封裝: |
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