Overview
The LM211DG4, part of the LM211 series, is a high-speed voltage comparator produced by Texas Instruments. These devices are designed to operate from a wide range of power-supply voltages, including standard ±15V op amp supplies and single 5-V supplies for logic systems. The LM211 is known for its fast response time, low input bias current, and the ability to drive loads such as lamps or relays with voltages up to 50 V at currents as high as 50 mA. The outputs are compatible with most TTL and MOS circuits, and both inputs and outputs can be isolated from system ground.
Key Specifications
| Parameter | Test Conditions | Typical Value | Maximum Value | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VIO) | TA = 25°C | 0.7 mV | 3 mV | mV |
| Input Offset Current (IIO) | TA = 25°C | 4 nA | 10 nA | nA |
| Input Bias Current (IIB) | 1 V ≤ VO ≤ 14 V, TA = 25°C | 100 nA | 300 nA | nA |
| Response Time (Low-to-High-Level Output) | RC = 500 Ω to 5 V, CL = 5 pF, TA = 25°C | 115 ns | - | ns |
| Response Time (High-to-Low-Level Output) | RC = 500 Ω to 5 V, CL = 5 pF, TA = 25°C | 165 ns | - | ns |
| Supply Voltage (VCC+ - VCC-) | - | - | 36 V | V |
| Operating Temperature Range | - | - | -40°C to +85°C | °C |
Key Features
- Fast response time: 165 ns for high-to-low-level output and 115 ns for low-to-high-level output.
- Strobe capability: Allows the output to be in the off state regardless of the differential input when the strobe is low.
- Low input bias current: Maximum of 300 nA.
- Low input offset current: Maximum of 70 nA.
- Operates from a single 5-V supply or ±15-V supplies.
- Output compatible with TTL, DTL, and MOS circuits.
- Can drive loads referenced to ground, VCC+, or VCC-.
- Offset balancing and wire-OR output capabilities.
- Available in various packages including SOIC, PDIP, and TSSOP.
Applications
- Desktop PCs
- Body Control Modules
- White Goods
- Building Automation
- Oscillators
- Peak Detectors
- Level shifting to higher or lower voltage levels.
- General comparator applications in various industrial and consumer electronics.
Q & A
- What is the typical response time of the LM211DG4?
The typical response time for low-to-high-level output is 115 ns, and for high-to-low-level output, it is 165 ns.
- What is the maximum input bias current of the LM211DG4?
The maximum input bias current is 300 nA.
- Can the LM211DG4 operate from a single 5-V supply?
- What is the maximum output current of the LM211DG4?
The LM211DG4 can drive loads with currents up to 50 mA.
- What are the operating temperature ranges for the LM211DG4?
The operating temperature range for the LM211DG4 is -40°C to +85°C.
- Is the output of the LM211DG4 compatible with TTL and MOS circuits?
- Can the inputs and outputs of the LM211DG4 be isolated from system ground?
- What is the strobe capability of the LM211DG4?
The strobe capability allows the output to be in the off state regardless of the differential input when the strobe is low.
- What are some common applications of the LM211DG4?
- What packages are available for the LM211DG4?
