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參數(shù)資料
| 型號(hào)： | INA148UA |
| 元件分類： | 差分放大器 |
| 英文描述： | 【200V Common-Mode Voltage DIFFERENCE AMPLIFIER |
| 中文描述： | 【200伏共模電壓差分放大器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 123K |
| 代理商： | INA148UA |
8
INA148
FIGURE 1. Basic Circuit Connections.
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
°
C, V
S
=
±
15V, R
L
= 10k
to common, and V
REF
= 0V, unless otherwise noted.
APPLICATION INFORMATION
The INA148 is a unity gain difference amplifier with a high
common-mode input voltage range. A basic diagram of the
circuit and pin connections is shown in Figure 1.
To achieve its high common-mode voltage range, the INA148
features a precision laser-trimmed thin-film resistor network
with a 20:1 input voltage divider ratio. High input voltages
are thereby reduced in amplitude, allowing the internal op
amp to “see” input voltages that are within its linear oper-
ating range. A “Tee” network in the op amp feedback
network places the amplifier in a gain of 20V/V, thus
restoring the circuit’s overall gain to unity (1V/V).
External voltages can be summed into the amplifier’s output
by using the Ref pin, making the differential amplifier a
highly versatile design tool. Voltages on the Ref pin will
also influence the INA148’s common-mode voltage range.
In accordance with good engineering practice for linear
integrated circuits, the INA148’s power-supply bypass
capacitors should be connected as close to pins 4 and 7 as
practicable. Ceramic or tantalum types are recommended for
use as bypass capacitors.
The input impedances are unusually high for a difference
amplifier and this should be considered when routing input
signal traces on a PC board. Avoid placing digital signal
traces near the difference amplifier’s input traces to mini-
mize noise pickup.
OPERATING VOLTAGE
The INA148 is specified for
±
15V and
±
5V dual supplies
and +5V single supplies. The INA148 can be operated with
single or dual supplies with excellent performance.
The INA148 is fully characterized for supply voltages from
±
1.35V to
±
18V and over temperatures of –55oC to +125 oC.
Parameters that vary significantly with operating voltage,
load conditions, or temperature are shown in the Typical
Performance Curves section.
5
μ
s/div
5
INVERTING INPUT
50% OVERLOAD RECOVERY TIME
1M
50k
52.6316k
50k
2.7778k
1M
V
IN
7
3
2
6
4
1
A1
INA148
–V
S
V
O
+
V
IN
–
0.1
μ
F
+V
S
0.1
μ
F
V
O
= (V
IN
– V
IN
)
–
+
5
μ
s/div
5
NON-INVERTING INPUT
50% OVERLOAD RECOVERY TIME
V
S
=
±
15V
V
IN–
V
OUT
0V
0V
V
IN+
V
OUT
0V
V
S
=
±
15V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA148UA/2K5 | 功能描述:差分放大器 +-200V Common-Mode Voltage 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 |
| INA148UA/2K5G4 | 功能描述:差分放大器 +-200V Common-Mode Voltage 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 |
| INA148UAG4 | 功能描述:差分放大器 +-200V Common-Mode Voltage 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 |
| INA149 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:High Common-Mode Voltage Difference Amplifier |
| INA149AID | 功能描述:差分放大器 High Common Mode Vltg 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 |
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