INA302 36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Dual Comparators | TI.com

INA302 (ACTIVE) 36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Dual Comparators

 

Description

The INA302 and INA303 (INA30x) 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 overcurrent and undercurrent conditions in a windowed configuration. These devices feature 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.

These devices operate from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The devices are specified over the extended operating temperature range of –40°C to +125°C, and are 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

All trademarks are the property of their respective owners.

INA302 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 5.5
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125

Parametrics

Compare all products in Current sense amplifiers analog output Email Download to Excel
Part number Order 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)
INA302 Order now 36     0     30
50
80    
0.1     100
20
50    
0.1
0.15
0.2    
10     100     550
440
400    
5.5     2.7     1.1     1     2     Alert Function
Bi-directional
Low-side Capable    
Catalog     -40 to 125     TSSOP | 14     14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)    
INA300 Order now 36     0     650     0.1           96       5.5     2.7     0.135     1     1     Alert Function
Low-side Capable    
Catalog     -40 to 125     VSSOP | 10
WSON | 10    
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10WSON: 4 mm2: 2 x 2 (WSON | 10)    
INA301 Order now 36     0     35
50
125    
0.1     100
20
50    
0.1
0.15
0.2    
10     100     550
500
450    
5.5     2.7     0.7     1     1     Alert Function
Low-side Capable    
Catalog     -40 to 125     VSSOP | 8     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
INA303 Order now 36     0     30
50
80    
0.1     100
20
50