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INA293A3QDBVRQ1

更新时间: 2024-11-22 02:48:31
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
29页 1862K
描述
INA293-Q1, AEC-Q100, –4-V to 110-V, 1-MHz, Ultra-Precise Current Sense Amplifier

INA293A3QDBVRQ1 数据手册

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INA293-Q1  
SBOS870A – MAY 2019 – REVISED SEPTEMBER 2020  
INA293-Q1, AEC-Q100, –4-V to 110-V, 1-MHz, Ultra-Precise Current Sense Amplifier  
1 Features  
3 Description  
AEC-Q100 qualified for automotive applications  
Temperature grade 1: –40 °C to +125 °C, TA  
Functional Safety-Capable  
Documentation available to aid functional safety  
system design  
Wide common-mode voltage:  
– Operational voltage: −4 V to +110 V  
– Survival voltage: −20 V to +120 V  
Excellent CMRR:  
The INA293-Q1 is a ultra-precise current sense  
amplifier that can measure voltage drops across shunt  
resistors over a wide common-mode range from –4 V  
to 110 V. The negative common-mode voltage allows  
the device to operate below ground, thus  
accommodating precise measurement of recirculating  
currents in half-bridge applications. The combination  
of a low offset voltage, small gain error and high DC  
CMRR enables highly accurate current measurement.  
The INA293-Q1 is not only designed for DC current  
measurement, but also for high-speed applications  
– 160-dB DC-CMRR  
– 85-dB AC-CMRR at 50 kHz  
Accuracy:  
(ex. Fast over-current protection) with  
a
high  
bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50  
kHz).  
– Gain:  
Gain error: ±0.15% (maximum)  
Gain drift: ±10 ppm/ °C (maximum)  
The INA293-Q1 operates from a single 2.7-V to 20-V  
supply, drawing 1.5 mA of supply current. The  
INA293-Q1 is available with five gain options: 20 V/V,  
50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain  
options address wide dynamic range current-sensing  
applications.  
– Offset:  
Offset voltage: ±15 µV (typical)  
Offset drift: ±0.05 µV/ °C (typical)  
Available gains:  
The INA293-Q1 is specified over an operating  
temperature range of −40 °C to +125 °C and is  
offered in a space-saving SOT-23 package with two  
pin-out variants.  
– INA293A1-Q1, INA293B1-Q1 : 20 V/V  
– INA293A2-Q1, INA293B2-Q1 : 50 V/V  
– INA293A3-Q1, INA293B3-Q1 : 100 V/V  
– INA293A4-Q1, INA293B4-Q1 : 200 V/V  
– INA293A5-Q1, INA293B5-Q1 : 500 V/V  
High bandwidth: 1.3 MHz  
Device Information (1)  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
INA293-Q1  
SOT-23 (5)  
2.90 mm × 1.60 mm  
Slew rate: 2.5 V/µs  
Quiescent current: 1.5 mA  
(1) For all available packages, see the package option  
addendum at the end of the data sheet.  
2 Applications  
VS  
VCM  
48-V automotive  
Solenoid control  
48-V DC/DC converter  
Valve control  
ISENSE  
R1  
IN+  
+
Current  
RSENSE  
Bias  
Feedback  
R1  
OUT  
-
INœ  
Buffer  
Load  
RL  
GND  
Functional Block Diagram  
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.  
 
 
 

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