Overview
The LM211QDRQ1 is a high-speed voltage comparator produced by Texas Instruments. This device is designed for automotive applications and is qualified to operate in a wide range of temperatures from -40°C to 125°C. It features fast response times and strobe capability, making it versatile for various applications. The LM211QDRQ1 can operate from single 5-V supplies for logic systems or ±15-V supplies for operational amplifiers, and its output levels are compatible with most TTL and MOS circuits.
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 |
| Common-Mode Input Voltage Range (VICR) | 13 to -14.5 V | |
| 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 | VCC+ = 4.5 V, VCC- = 0, IOL = 8 mA, VID = -10 mV |
| 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 |
Key Features
- Fast response times
- Strobe capability for output control
- Offset balancing for improved accuracy
- Compatible with 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 with an operating temperature range of -40°C to 125°C
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 timing circuits
Q & A
- What is the operating temperature range of the LM211QDRQ1?
The LM211QDRQ1 operates in a temperature range of -40°C to 125°C.
- What is the maximum supply voltage for the LM211QDRQ1?
The maximum supply voltage (VCC+) is 18 V.
- Can the LM211QDRQ1 drive TTL and MOS circuits?
- What is the strobe capability of the LM211QDRQ1?
The LM211QDRQ1 has a strobe capability that allows the output to be controlled by a strobe input. If the strobe is low, the output is in the off state, regardless of the differential input.
- How much current can the LM211QDRQ1 drive?
The LM211QDRQ1 can drive loads up to 50 V at 50 mA.
- What is the input bias current of the LM211QDRQ1?
The maximum input bias current (IIB) is 150 nA at 25°C.
- Can the inputs and outputs of the LM211QDRQ1 be isolated from system ground?
- What are some common applications of the LM211QDRQ1?
- Is the LM211QDRQ1 qualified for automotive applications?
- What is the status of the LM211QDRQ1 in terms of new designs?
