Overview
The LM211QDRG4Q1 is a high-speed voltage comparator produced by Texas Instruments. This device is designed to operate over a wide range of power-supply voltages, including ±15-V supplies for operational amplifiers and 5-V supplies for logic systems. It is qualified for automotive applications and features fast response times, strobe capability, and compatibility with most TTL and MOS circuits. The LM211QDRG4Q1 can drive lamps or relays and switch voltages up to 50 V at 50 mA, with all inputs and outputs capable of being isolated from system ground.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VCC+) | 18 V | Maximum |
| Differential Input Voltage (VID) | ±30 V | Maximum |
| Input Voltage (VI) | ±15 V | Maximum |
| Input Bias Current (IIB) | 150 nA | Maximum at 25°C |
| Input Offset Current (IIO) | 20 nA | Maximum at 25°C |
| Large-Signal Differential Voltage Amplification (AVD) | 40 to 200 V/mV | VO = 5 V to 35 V, RL = 1 kΩ at 25°C |
| High-Level (Collector) Output Current (IOH) | 0.2 to 10 nA | I(strobe) = −3 mA, VID = 5 mV, VOH = 35 V at 25°C |
| Low-Level (Collector-to-Emitter) Output Voltage (VOL) | 0.23 to 0.4 V | IOL = 50 mA, VID = −10 mV at 25°C |
| Supply Current from VCC+ (ICC+) | 5.1 to 6 mA | Output low, no load at 25°C |
| Supply Current from VCC− (ICC−) | −4.1 to −5 mA | Output high, no load at 25°C |
| Operating Temperature Range | −40°C to 125°C |
Key Features
- High-speed voltage comparator with fast response times.
- Strobe capability for output control.
- Offset balancing and strobe capabilities available.
- Compatible with most TTL and MOS circuits.
- Can drive lamps or relays and switch voltages up to 50 V at 50 mA.
- All inputs and outputs can be isolated from system ground.
- Qualified for automotive applications (AEC-Q100).
- Operates from a wide range of power-supply voltages, including ±15-V and 5-V supplies.
Applications
- Zero-crossing detectors.
- Precision squarers.
- Digital transmission isolators.
- Positive and negative peak detectors.
- Relay drivers with strobe capability.
- Switching power amplifiers.
- Low-voltage adjustable reference supplies.
- Multivibrators and other oscillatory circuits.
Q & A
- What is the maximum supply voltage for the LM211QDRG4Q1?
The maximum supply voltage is 18 V.
- What is the differential input voltage range for the LM211QDRG4Q1?
The differential input voltage range is ±30 V.
- What is the input bias current of the LM211QDRG4Q1?
The input bias current is up to 150 nA at 25°C.
- Can the LM211QDRG4Q1 drive lamps or relays?
- What is the operating temperature range of the LM211QDRG4Q1?
The operating temperature range is −40°C to 125°C.
- Is the LM211QDRG4Q1 qualified for automotive applications?
- What are the common applications of the LM211QDRG4Q1?
- Can the outputs of the LM211QDRG4Q1 be isolated from system ground?
- What is the strobe capability of the LM211QDRG4Q1?
- How does the LM211QDRG4Q1 handle offset balancing?
