INA303 36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Window Comparator | TI.com

INA303 (ACTIVE)

36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Window Comparator

36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Window Comparator - INA303
 

Description

The INA302 and INA303 devices feature a high common-mode, bidirectional, current-sensing amplifier and two high-speed comparators to detect out-of-range current conditions. The INA302 comparators are configured to detect and respond to overcurrent conditions. The INA303 comparators are configured to respond to both over- and undercurrent conditions in a windowed configuration. The device features an adjustable limit threshold range for each comparator set using an external limit-setting resistor. These current-shunt monitors can measure differential voltage signals on common-mode voltages that can vary from –0.1 V up to 36 V, independent of the supply.

The open-drain alert outputs can be configured to operate in either a transparent mode (output status follows the input state) or in a latched mode (alert output is cleared when the latch is reset). The alert response time for comparator 1 is under 1 µs and the alert response for comparator 2 is set through an external capacitor ranging from 2 µs to 10 s.

This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The device is specified over the extended operating temperature range (–40°C to +125°C), and is available in a 14-pin TSSOP package.

Features

  • Wide Common-Mode Input Range: –0.1 V to 36 V
  • Dual Comparator Outputs:
    • INA302: Two Independent Overlimit Alerts
    • INA303: Window Comparator
    • Threshold Levels Set Individually
    • Comparator 1 Alert Response: 1 µs
    • Comparator 2 Adjustable Delay: 2 µs to 10 s
    • Open-Drain Outputs With Independent Latch Control Modes
  • High Accuracy Amplifier:
    • Offset Voltage: 30 µV (Max, A3 Version)
    • Offset Voltage Drift: 0.5 µV/°C (Max)
    • Gain Error: 0.15% (Max, A3 Version)
    • Gain Error Drift: 10 ppm/°C
  • Available Amplifier Gains:
    • INA302A1, INA303A1: 20 V/V
    • INA302A2, INA303A2: 50 V/V
    • INA302A3, INA303A3: 100 V/V

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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)
INA303 INA300 INA301 INA302 INA381
36     36     36     36     26    
0     0     0     0     -0.2    
30
50
80    
650     35
50
125    
30
50
80    
150    
0.1     0.1     0.1     0.1     0.2    
100
20
50    
  100
20
50    
100
20
50    
100
20
200
50    
0.1
0.15
0.2    
  0.1
0.15
0.2    
0.1
0.15
0.2    
1    
10       10     10     20    
100     96     100     100     84    
550
500
450    
  550
500
450    
550
440
400    
350
210
150
105    
5.5     5.5     5.5     5.5     5.5    
2.7     2.7     2.7     2.7     2.7    
1.1     0.135     0.7     1.1     0.5    
1     1     1     1     1    
2     1     1     2     1    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Low-side Capable    
Alert Function
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Low-side Capable    
Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
TSSOP | 14     VSSOP | 10
WSON | 10    
VSSOP | 8     TSSOP | 14     WSON | 8    
14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)     10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
See datasheet (WSON)    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)     See datasheet (WSON)    

INA303 Error Analysis

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