INA301 36V, Low-/High-side, Voltage Output CSA with Comparator | TI.com

INA301 (ACTIVE)

36V, Low-/High-side, Voltage Output CSA with Comparator

36V, Low-/High-side, Voltage Output CSA with Comparator - INA301
 

Description

The INA301 includes both a high common-mode, current-sensing amplifier and a high-speed comparator configured to detect overcurrent conditions through measuring the voltage developed across a current-sensing or current-shunt resistor and comparing that voltage to a defined threshold limit. The device features an adjustable limit threshold range that is set using a single external limit-setting resistor. This current-shunt monitor can measure differential voltage signals on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage.

The open-drain alert output can be configured to operate in either a transparent mode where the output status follows the input state or in a latched mode where the alert output is cleared when the latch is reset. The device alert response time is under 1 µs, allowing for quick detection of overcurrent events.

This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 700 µA. The device is specified over the extended operating temperature range (–40°C to +125°C), and is available in an 8-pin VSSOP package.

Features

  • Wide Common-Mode Input Range: 0 V to 36 V
  • Dual Output: Amplifier and Comparator Output
  • High Accuracy Amplifier:
    • Offset Voltage: 35 µV (Max)
    • Offset Voltage Drift: 0.5 µV/°C (Max)
    • Gain Error: 0.1% (Max)
    • Gain Error Drift: 10 ppm/°C
  • Available Amplifier Gains:
    • INA301A1: 20 V/V
    • INA301A2: 50 V/V
    • INA301A3: 100 V/V
  • Programmable Alert Threshold Set Through a Single Resistor
  • Total Alert Response Time: 1 µs
  • Open-Drain Output With Latching Mode
  • Package: VSSOP-8

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Parametrics Compare all products in Current sense amplifiers analog output

 
Common Mode Voltage (Max) (V)
Common Mode Voltage (Min) (V)
Input Offset (+/-) (Max) (uV)
Input Offset Drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain Error (%)
Gain Error Drift (Max) (ppm/°C)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Number of Channels (#)
Comparators (#)
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
INA301 INA300 INA302 INA303
36     36     36     36    
0     0     0     0    
35
50
125    
650     30
50
80    
30
50
80    
0.1     0.1     0.1     0.1    
100
20
50    
  100
20
50    
100
20
50    
0.1
0.15
0.2    
  0.1
0.15
0.2    
0.1
0.15
0.2    
10       10     10    
100     96     100     100    
550
500
450    
  550
440
400    
550
500
450    
5.5     5.5     5.5     5.5    
2.7     2.7     2.7     2.7    
0.7     0.135     1.1     1.1    
1     1     1     1    
1     1     2     2    
Alert Function
Low-side Capable    
Alert Function
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125    
VSSOP | 8     VSSOP | 10
WSON | 10    
TSSOP | 14     TSSOP | 14    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
See datasheet (WSON)    
14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)     14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)    

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INA301 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125