Overview
The INA203-Q1, produced by Texas Instruments, is a highly versatile and robust unidirectional current-shunt monitor designed for automotive and other high-reliability applications. This device integrates a current sense amplifier with dual comparators and a voltage reference, making it ideal for monitoring current in various systems. It operates over a wide range of common-mode voltages from –16 V to +80 V and is specified over an extended operating temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 2.7 | 18 | V | |
| Common-Mode Voltage Range | –16 | +80 | V | |
| Bandwidth | 500 | kHz | ||
| Gain | 20 | V/V | ||
| Quiescent Current | 1.8 | mA | ||
| Comparator Response Time | 1.3 | μs | ||
| Reference Output Voltage | 1.188 | 1.2 | 1.212 | V |
| Package Type | TSSOP-14 | |||
| Operating Temperature Range | –40 | +125 | °C |
Key Features
- Qualified for automotive applications
- Current sense amplifier with a common-mode range of –16 V to +80 V and accuracy of up to 3.5% over temperature
- Integrated dual comparators: Comparator 1 with latching capability and Comparator 2 with optional delay
- 1.2-V reference output and internal 0.6-V references for comparators
- Operates from a single 2.7 V to 18 V supply
- Latch-up performance meets 100 mA per AEC-Q100, Level I
Applications
- Electric Power Steering (EPS) Systems
- Body Control Modules
- Brake Systems
- Electronic Stability Control (ESC) Systems
Q & A
- What is the common-mode voltage range of the INA203-Q1? The INA203-Q1 operates over a common-mode voltage range of –16 V to +80 V.
- What is the gain of the INA203-Q1 current sense amplifier? The gain of the INA203-Q1 is 20 V/V.
- What is the bandwidth of the INA203-Q1? The bandwidth of the INA203-Q1 is 500 kHz.
- Does the INA203-Q1 have integrated comparators? Yes, the INA203-Q1 includes two open-drain comparators with internal 0.6-V references.
- What is the quiescent current of the INA203-Q1? The quiescent current of the INA203-Q1 is 1.8 mA.
- What are the operating temperature ranges for the INA203-Q1? The INA203-Q1 is specified over an extended operating temperature range of –40°C to +125°C.
- What type of package is the INA203-Q1 available in? The INA203-Q1 is available in a TSSOP-14 package.
- Can the comparator references be overridden by external inputs? Yes, the comparator references can be overridden by external inputs for increased design flexibility.
- Does the INA203-Q1 have a latching capability? Yes, Comparator 1 includes a latching capability.
- How is the delay for Comparator 2 controlled? The delay for Comparator 2 is controlled by a capacitor connected to the CMP2 Delay Pin.
