Overview
The LMH7324SQ/NOPB is a quad high-speed comparator with RS(P)ECL (Reduced Swing Positive Emitter Coupled Logic) outputs, designed by Texas Instruments. This device is notable for its fast propagation delay of 700 ps and low overdrive dispersion of 20 ps, making it suitable for high-speed signal processing applications. The LMH7324 operates over a wide supply voltage range from 5V to 12V and can be used with single or dual supply configurations, enhancing its flexibility in interfacing with various high-speed logic families.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Propagation Delay | 700 ps | VCCI = VCCO = +5V, VEE = 0V, Overdrive = 50 mV, CL = 2 pF |
| Overdrive Dispersion | 20 ps | VCCI = VCCO = +5V, VEE = 0V |
| Rise and Fall Times | 150 ps | Overdrive = 50 mV, CL = 2 pF |
| Supply Voltage Range | 5V to 12V | |
| Input Common Mode Range | Extends 200 mV below the negative supply | |
| Output Type | RSPECL, compatible with LVDS if VCCO = 2.5V | |
| Supply Current per Comparator | 17 mA at 5V (load current excluded) | |
| Package | 32-Pin WQFN | |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- High-speed propagation delay of 700 ps and low overdrive dispersion of 20 ps.
- Fast rise and fall times of approximately 150 ps.
- Wide supply voltage range from 5V to 12V, supporting single or dual supply configurations.
- Input common mode range extends 200 mV below the negative supply, enabling ground sensing with a single supply.
- RSPECL outputs, compatible with LVDS if VCCO is set to 2.5V.
- Complementary outputs for high common mode noise suppression.
- ESD protection on input and output pins.
- Compact 32-Pin WQFN package.
Applications
- Digital receivers.
- High-speed signal restoration.
- Zero-crossing detectors.
- High-speed sampling.
- Window comparators.
- High-speed signal triggering.
Q & A
- What is the propagation delay of the LMH7324?
The propagation delay of the LMH7324 is approximately 700 ps.
- What is the overdrive dispersion of the LMH7324?
The overdrive dispersion is 20 ps.
- What is the rise and fall time of the LMH7324?
The rise and fall times are approximately 150 ps.
- What is the supply voltage range of the LMH7324?
The supply voltage range is from 5V to 12V.
- Can the LMH7324 operate with a single supply?
- What type of outputs does the LMH7324 have?
The LMH7324 has RSPECL outputs, which are also compatible with LVDS if VCCO is set to 2.5V.
- What is the package type of the LMH7324?
The LMH7324 is available in a 32-Pin WQFN package.
- What is the operating temperature range of the LMH7324?
The operating temperature range is from -40°C to 125°C.
- Does the LMH7324 have ESD protection?
- What are some typical applications of the LMH7324?
Typical applications include digital receivers, high-speed signal restoration, zero-crossing detectors, high-speed sampling, window comparators, and high-speed signal triggering.
