The INA302-Q1 and INA303-Q1 (INA30x-Q1) devices feature a high common-mode, bidirectional, current-sensing amplifier and two high-speed comparators to detect out-of-range current conditions. The INA302-Q1 comparators are configured to detect and respond to overcurrent conditions. The INA303-Q1 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. In addition, these devices will survive with common-mode voltages as high as 40 V.
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.
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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-Q1 |
|
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 |
Automotive | -40 to 125 | TSSOP | 14 | 14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14) |
INA300-Q1 |
|
36 | 0 | 650 | 0.1 | 96 | 5.5 | 2.7 | 0.135 | 1 | 1 |
Alert Function
Low-side Capable |
Automotive | -40 to 125 | VSSOP | 10 | 10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10) | ||||
INA301-Q1 |
|
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 |
Automotive | -40 to 125 | VSSOP | 8 | 8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8) |
INA303-Q1 |
|
36 | 0 |
30
50 80 |
0.1 |
100
20 50 |