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參數(shù)資料
| 型號(hào)： | INA2133UA |
| 元件分類： | 差分放大器 |
| 英文描述： | High-Speed, Precision DIFFERENCE AMPLIFIERS |
| 中文描述： | 高速，精密差分放大器 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 190K |
| 代理商： | INA2133UA |
9
INA133, INA2133
APPLICATIONS INFORMATION
The INA133 and INA2133 are high-speed difference ampli-
fiers suitable for a wide range of general purpose applica-
tions. Figure 1 shows the basic connections required for
operation of the INA133. Decoupling capacitors are strongly
recommended 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 5
mismatch in source impedance will
degrade the common-mode rejection of a typical device to
approximately 80dB (a 10
mismatch degrades CMR to
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.
The INA133’s internal resistors are accurately ratio trimmed
to match. That is, R
1
is trimmed to match R
2
and R
3
is
trimmed to match R
4
. However, the absolute values may not
be equal (R
1
+ R
2
may be slightly different than R
3
+ R
4
).
Thus, large series resistors on the input (greater than 250
),
even if well matched, will degrade common-mode rejection.
Circuit board layout constraints might suggest possible varia-
tions in connections of the internal resistors. For instance, it
appears that pins 1 and 3 could be interchanged. However,
because of the ratio trimming technique used (see paragraph
above) CMRR will be degraded. If pins 1 and 3 are inter-
changed, pins 2 and 5 must also be interchanged to maintain
proper ratio matching.
OPERATING VOLTAGE
The INA133 and INA2133 operate from single (+4.5V to
+36V) or dual (
±
2.25V to
±
18V) supplies with excellent
performance. Specifications are production tested with
±
5V
and
±
15V supplies. Most behavior remains unchanged
throughout the full operating voltage range. Parameters which
vary significantly with operating voltage are shown in the
Typical Performance Curves.
INPUT VOLTAGE
The INA133 and INA2133 can accurately measure differen-
tial signals that are above and below the supply rails. Linear
common-mode range extends from 2 (V+)–3V to 2 (V–)
+3V (nearly twice the supplies). See the typical performance
curve, “Input Common-Mode Voltage vs Output Voltage.”
OFFSET VOLTAGE TRIM
The INA133 and INA2133 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
INA133
V
= V
–
V
2
Gain Error =
±
0.01%
CMR = 90dB
Nonlinearity =
±
0.0001%
2
R
3
25k
R
4
25k
R
1
25k
R
2
25k
V
2
–In
+In
1
μ
F
V–
4
1
μ
F
V+
7
FIGURE 1. Precision Difference Amplifier (Basic Power
Supply and Signal Connections).
V
3
5
6
3
V
O
INA133
V
= V
–
V
Offset Adjustment
Range =
±
1mV
2
R
3
R
1
R
2
R
4
V
2
10
150k
10
100k
+15V
–15V
1
FIGURE 2. Offset Adjustment.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| INA133 | High-Speed, Precision DIFFERENCE AMPLIFIERS |
| INA133U | High-Speed, Precision DIFFERENCE AMPLIFIERS |
| INA2133U | High-Speed, Precision DIFFERENCE AMPLIFIERS |
| INA134PA | AUDIO DIFFERENTIAL LINE RECEIVERS 0dB G = 1 |
| INA2134PA | AUDIO DIFFERENTIAL LINE RECEIVERS 0dB G = 1 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA2133UA/2K5 | 功能描述:IC OPAMP DIFF 1.5MHZ DUAL 14SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品變化通告:Discontinuation 18/May/2012 標(biāo)準(zhǔn)包裝:2,000 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.42 V/µs 增益帶寬積:1.5MHz -3db帶寬:- 電流 - 輸入偏壓:15nA 電壓 - 輸入偏移:1000µV 電流 - 電源:116µA 電流 - 輸出 / 通道:100mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5 V，±0.9 V ~ 2.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁面:851 (CN2011-ZH PDF) 其它名稱:296-20930-2 |
| INA2133UA/2K5E4 | 功能描述:特殊用途放大器 High-Speed Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| INA2133UAE4 | 功能描述:差分放大器 High-Speed Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補(bǔ)償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| INA2133UAG4 | 功能描述:差分放大器 High-Speed Prec Diff Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補(bǔ)償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
| INA2133UE4 | 功能描述:差分放大器 High-Speed Precision RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 Channel 帶寬:2.4 GHz 可用增益調(diào)整:6 dB to 26 dB 輸入補(bǔ)償電壓: 共模抑制比（最小值）:- 40 dB 工作電源電壓:4.75 V to 5.25 V 電源電流:100 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WQFN-24 封裝:Reel |
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