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參數(shù)資料
| 型號(hào)： | INA134UA |
| 英文描述： | AUDIO DIFFERENTIAL LINE RECEIVERS 0dB G = 1 |
| 中文描述： | 音頻差分線路接收器○分貝增益\u003d 1 |
| 文件頁(yè)數(shù)： | 8/9頁(yè) |
| 文件大?。?/td> | 260K |
| 代理商： | INA134UA |
8
INA134/2134
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required for operation
of the INA134. Decoupling capacitors are strongly recom-
mended in applications 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-circuited.
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 10
mismatch in source impedance will
degrade the common-mode rejection of a typical device to
approximately 74dB. 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.
Do not interchange pins 1 and 3 or pins 2 and 5, even though
nominal resistor values are equal. These resistors are laser
trimmed for precise resistor ratios to achieve accurate gain
and highest CMR. Interchanging these pins would not pro-
vide specified performance.
AUDIO PERFORMANCE
The INA134 and INA2134 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 good
dynamic performance.
The INA134 and INA2134 have excellent distortion charac-
teristics. THD+Noise is below 0.002% 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 INA134 and INA2134 are laser trimmed for low offset
voltage and drift. Most applications require no external offset
adjustment. Figure 2 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 2. The source impedance of a signal applied
to the Ref terminal should be less than 10
to maintain good
common-mode rejection.
V
3
5
6
1
3
INA134
V
OUT
= V
3
–
V
2
2
R
3
25k
R
4
25k
R
1
25k
R
2
25k
V
2
–In
+In
1μF
V–
4
1μF
V+
7
FIGURE 1. Precision Difference Amplifier (Basic Power
Supply and Signal Connections).
FIGURE 2. Offset Adjustment.
V
3
5
6
3
V
O
INA134
V
= V
–
V
Offset Adjustment
Range = ±300μV
2
R
3
R
1
R
2
R
4
V
2
10
499k
10
100k
+15V
–15V
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA134UA/2K5 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Audio Diff Line Receivers 0dB (G=1) 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: |
| INA134UA/2K5E4 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Audio Diff Line Receivers 0dB (G=1) 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: |
| INA134UAE4 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Audio Diff Line Receivers 0dB (G=1) 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: |
| INA134UAG4 | 功能描述:音頻發(fā)送器、接收器、收發(fā)器 Audio Diff Line Receivers 0dB (G=1) 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: |
| INA137 | 制造商:BB 制造商全稱:BB 功能描述:AUDIO DIFFERENTIAL LINE RECEIVERS 【6dB G = 1/2 or 2 |
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