Overview
The LMP8602QMME/NOPB is a precision current-sense amplifier produced by Texas Instruments. This device is part of the LMP860x series, which includes fixed-gain, precision current-shunt monitors. The LMP8602QMME/NOPB is specifically designed for high-side and low-side driver configuration current sensing, bidirectional current measurement, and current loop to voltage conversion. It is ideal for applications requiring accurate and reliable current sensing in various environments, including automotive and industrial settings.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Supply Voltage (VS - GND) | -0.3 | 6 | V | |
| Continuous Input Voltage (-IN and +IN) | -22 | 60 | V | |
| Transient Input Voltage (400 ms) | -25 | 65 | V | |
| Total Gain | 49.75 | 50 | 50.25 | V/V |
| Input Offset Voltage | 0.15 | 1 | mV | |
| Input Offset Voltage Drift | 10 | μV/°C | ||
| Common-Mode Rejection Ratio (CMRR) | 90 | dB | ||
| Common-Mode Voltage Range (VS = 5 V) | -22 | 60 | V | |
| Common-Mode Voltage Range (VS = 3.3 V) | -4 | 27 | V | |
| Supply Current | 0.7 | 1.1 | 1.5 | mA |
| Slew Rate | 0.6 | 0.83 | V/μs | |
| Bandwidth | 50 | 60 | kHz | |
| Output Short-Circuit Current (Sourcing) | -25 | -38 | -60 | mA |
| Output Short-Circuit Current (Sinking) | 30 | 46 | 65 | mA |
| Package Type | VSSOP (8) | |||
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Precision Current Sensing: The LMP8602QMME/NOPB offers precise gain of 50x, making it suitable for accurate current measurements.
- High Common-Mode Voltage Range: The device can operate with input common-mode voltages ranging from -22 V to 60 V when using a 5-V supply, or -4 V to 27 V with a 3.3-V supply.
- Bidirectional Operation: It supports both unidirectional and bidirectional current sensing, enabled by the offset input pin.
- Low Input Offset Voltage and Drift: Features a low input offset voltage of up to 1 mV and a drift of up to 10 μV/°C.
- High CMRR and PSRR: Offers a common-mode rejection ratio of 90 dB and a power-supply rejection ratio of 90 dB.
- AEC-Q100 Qualified: The LMP8602QMME/NOPB is qualified for automotive applications, adhering to the AEC-Q100 standard.
- Compact Packaging: Available in an 8-pin VSSOP package, making it suitable for space-constrained designs.
Applications
- Automotive Systems: Ideal for fuel injection control, transmission control, power steering, and battery management systems.
- Industrial Automation: Suitable for current sensing in motor control, power supplies, and other industrial automation applications.
- High-Side and Low-Side Driver Configuration: Can be used in both high-side and low-side driver configurations for current sensing.
- Current Loop to Voltage Conversion: Converts current loops to voltage signals, which can be used in various monitoring and control systems.
Q & A
- What is the gain of the LMP8602QMME/NOPB?
The gain of the LMP8602QMME/NOPB is 50x.
- What is the common-mode voltage range for the LMP8602QMME/NOPB when using a 5-V supply?
The common-mode voltage range is -22 V to 60 V when using a 5-V supply.
- Does the LMP8602QMME/NOPB support bidirectional current sensing?
Yes, it supports both unidirectional and bidirectional current sensing.
- What is the input offset voltage of the LMP8602QMME/NOPB?
The input offset voltage is up to 1 mV.
- Is the LMP8602QMME/NOPB qualified for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the operating temperature range of the LMP8602QMME/NOPB?
The operating temperature range is -40°C to 125°C.
- What is the package type of the LMP8602QMME/NOPB?
The package type is 8-pin VSSOP.
- What are some typical applications of the LMP8602QMME/NOPB?
Typical applications include automotive systems, industrial automation, high-side and low-side driver configurations, and current loop to voltage conversion.
- What is the slew rate of the LMP8602QMME/NOPB?
The slew rate is 0.6 V/μs to 0.83 V/μs.
- What is the bandwidth of the LMP8602QMME/NOPB?
The bandwidth is 50 kHz to 60 kHz.
