Overview
The LMP7300MME/NOPB, produced by Texas Instruments, is a micropower precision comparator integrated circuit. This device combines low power consumption with high precision, making it ideal for various applications requiring accurate threshold detection and low power operation. The LMP7300 features an open collector output, external hysteresis control, and a precision 2.048-V voltage reference, which is particularly useful in mixed-voltage system designs and low-power sensor or portable applications.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage (VS) | 2.7 | 12 | V | ||
| Supply Current (IS) | TA = 25°C, V+ = 2.7 V, RPULLUP = Open | 9 | 12 | 17 | μA |
| Input Offset Voltage (VOS) | TA = 25°C, VCM = V+/2 | ±0.07 | ±0.75 | ±2 | mV |
| Input Offset Average Drift (TCVOS) | 1.8 | μV/°C | |||
| Propagation Delay (TPD) | Overdrive = 100 mV, CL = 10 pF | 4.5 | 7.6 | μs | |
| Reference Voltage (VO) | 2.043 | 2.048 | 2.053 | V | |
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- Micropower Operation: Low supply current, typically 12 μA at 2.7 V supply voltage.
- Precision Comparator: Low input offset voltage (±0.07 mV to ±2 mV) and high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR).
- External Hysteresis Control: Programmable hysteresis using HYSTP and HYSTN pins.
- Precision Voltage Reference: 2.048-V band gap derived reference voltage with 0.2% accuracy over the full operating temperature range.
- Open Collector Output: Output voltage upper rail is unconstrained by VCC and can be pulled above VCC to a maximum of 12 V.
- Low Output Saturation Voltage: Less than 0.4 V over temperature.
Applications
- Precision Threshold Detection: Ideal for applications requiring accurate level detection.
- Battery Monitoring and Management Systems: Suitable for battery voltage monitoring and management in various devices.
- Zero Crossing Detectors: Can be used in applications requiring detection of zero-crossing points in signals.
- Low-Power Sensor and Portable Applications: Perfect for devices that require low power consumption and high precision.
Q & A
- What is the supply voltage range of the LMP7300?
The supply voltage range is from 2.7 V to 12 V.
- What is the typical supply current of the LMP7300 at 2.7 V supply voltage?
The typical supply current is 12 μA.
- What is the input offset voltage range of the LMP7300?
The input offset voltage range is from ±0.07 mV to ±2 mV.
- Can the output voltage of the LMP7300 be pulled above VCC?
- What is the precision of the reference voltage output?
The reference voltage output is a 2.048-V band gap derived voltage with 0.2% accuracy over the full operating temperature range.
- What are the typical applications of the LMP7300?
The LMP7300 is typically used in precision threshold detection, battery monitoring and management systems, zero crossing detectors, and low-power sensor or portable applications.
- How does the external hysteresis control work on the LMP7300?
The external hysteresis can be controlled using the HYSTP and HYSTN pins, allowing for programmable hysteresis levels.
- What is the operating temperature range of the LMP7300?
The operating temperature range is from -40°C to 125°C.
- What is the propagation delay of the LMP7300?
The propagation delay is typically 7.6 μs with an overdrive of 100 mV and a load capacitance of 10 pF.
- Is the LMP7300 suitable for mixed-voltage system designs?
