Datasheet 搜索 > 放大器、缓冲器 > TI（德州仪器） > INA240A4PWR 数据手册 > INA240A4PWR 数据手册 1/35 页
器件3D模型￥ 13.445
INA240A4PWR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
放大器、缓冲器
封装:
TSSOP-8
描述:
电流检测放大器, 零漂移, 1个放大器, 90 µA, TSSOP, 8 引脚, -40 °C, 125 °C
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3P13P14Hot
典型应用电路图在P1P20P21P22P23
原理图在P10
封装尺寸在P28P30P31P32
焊盘布局在P33
标记信息在P28P29
封装信息在P27P28P29P30P31
技术参数、封装参数在P4
应用领域在P1P20P21P22P23P24P35
电气规格在P5P10P16
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INA240A4PWR数据手册
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+
Supply
(2.7 V to 5.5 V)
IN+
IN±
REF2
REF1
OUT
Time (2 µs/div)
Common-Mode StepDDDDDDDDDDDDD
DDDDDDDDDDDDD
INA240 Output
-30 -1.5
0 -1
30 -0.5
60 0
90 0.5
120 1
150 1.5
180 2
210 2.5
240 3
270 3.5
D004
270
Y1
240
210
180
150
3.50
Y1
3
2.5
2
1.5
Common-Mode Step
INA240 OUT
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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
INA240
SBOS662A –JULY 2016–REVISED OCTOBER 2016
INA240 High- and Low-Side, Bidirectional, Zero-Drift, Current-Sense Amplifier with
Enhanced PWM Rejection
1
1 Features
1
• Enhanced PWM Rejection
• Excellent CMRR:
– 132-dB DC CMRR
– 93-dB AC CMRR at 50 kHz
• Wide Common-Mode Range: –4 V to 80 V
• Accuracy:
– Gain:
– Gain Error: 0.20% (max)
– Gain Drift: 2.5 ppm/°C (max)
– Offset:
– Offset Voltage: ±25 μV (max)
– Offset Drift: 250 nV/°C (max)
• Available Gains:
– INA240A1: 20 V/V
– INA240A2: 50 V/V
– INA240A3: 100 V/V
– INA240A4: 200 V/V
• Quiescent Current: 2.4 mA (max)
2 Applications
• Motor Controls
• Solenoid and Valve Controls
• Power Management
• Actuator Controls
• Pressure Regulators
• Telecom Equipment
3 Description
The INA240 is a voltage-output, current-sense
amplifier with enhanced PWM rejection that can
sense drops across shunt resistors over a wide
common-mode voltage range from –4 V to 80 V,
independent of the supply voltage. The negative
common-mode voltage allows the device to operate
below ground, accommodating the flyback period of
typical solenoid applications. Enhanced PWM
rejection provides high levels of suppression for large
common-mode transients (ΔV/Δt) in systems that use
pulse width modulation (PWM) signals (such as motor
drives and solenoid control systems). This feature
allows for accurate current measurements without
large transients and associated recovery ripple on the
output voltage.
This device operates from a single 2.7-V to 5.5-V
power supply, drawing a maximum of 2.4 mA of
supply current. Four fixed gains are available: 20 V/V,
50 V/V, 100 V/V, and 200 V/V. The low offset of the
zero-drift architecture enables current sensing with
maximum drops across the shunt as low as 10-mV
full-scale. All versions are specified over the extended
operating temperature range (–40°C to +125°C), and
are offered in an 8-pin TSSOP package.
Device Information
(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
INA240 TSSOP (8) 3.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Enhanced PWM Rejection
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