INA301 is a 36V, 550kHz, 4V/μs, high precision current sense amplifier with comparator

The INA301 includes a high common mode current sense amplifier and a high speed comparator configured to detect overcurrent conditions by measuring the voltage developed across the current sense or shunt resistor and comparing this voltage to a defined threshold limit. The device features an adjustable limit threshold range that is set using a single external limit setting resistor. The AFE5808AZCF shunt monitor measures differential voltage signals on common-mode voltages ranging from 0 V to 36 V, independent of supply voltage.

The open-drain alarm output can be configured to operate in a transparent mode where the output state follows the input state or a latched mode where the alarm output is cleared when the latch is reset. The device alarm response time is less than 1 μs for fast detection of overcurrent events.

The device operates from a single 2.7V to 5.5V supply with 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-lead VSSOP package.

characteristic:

●Wide common mode input range: 0V to 36V

●Dual output: amplifier and comparator output

●High precision amplifier:

○Offset voltage: 35 μV (max)

○Offset voltage drift: 0.5 μV/°C (max)

○Gain error: 0.1% (maximum)

○ Gain Error Drift: 10 ppm/°C

●Available amplifier gain:

○INA301A1: 20 V/V

○INA301A2: 50 V/V

○INA301A3: 100 V/V

● Programmable alarm thresholds set by a single resistor

●Total alarm response time: 1 μs

● Open-drain output with latch mode

●Package: VSSOP-8

parameter:

Common Mode Voltage (Max) (V): 36

Common Mode Voltage (Min) (V): 0

Input offset (+/-) (max) (uV): 35, 50, 125

Input Offset Drift (+/-) (Typ) (uV/C): 0.1

Gain (V/V): 100, 20, 50

Gain Error (%): 0.1, 0.15, 0.2

Gain Error Drift (+/-) (max) (ppm/°C): 10

CMRR (min) (dB): 100

Bandwidth (kHz): 550, 500, 450

Supply Voltage (Max) (V): 5.5

Supply voltage (Min) (V): 2.7

IQ (max) (mA): 0.7

Number of channels (#): 1

Comparator (#): 1

Features: Alarm function, high accuracy, low end capability

Operating temperature range (°C): -40 to 125