Introduction to comparator chip
A comparator chip is a fundamental category of analog integrated circuit, which is designed to compare the magnitude of two input analog voltage signals and output a digital result (high level or low level) that indicates which input voltage has a higher magnitude. As a key interface between analog systems and digital systems, comparator chips are widely applied in signal detection, threshold triggering, waveform shaping, analog-to-digital conversion and other scenarios.
Working Principle of comparator chip
In terms of operating principle, the core structure of a comparator is a high-gain differential amplifier circuit. The two input terminals receive the voltages to be compared, V+ and V-. When V+ exceeds V-, the comparator outputs a high level; when V+ is lower than V-, it outputs a low level. The output reflects only the comparative relationship rather than preserving the amplitude details of the input signals-a key distinction between comparators and standard operational amplifiers.
This series of 5V high-speed comparators-available in single, dual, and quad-channel configurations-offers options for push-pull or open-drain outputs. The series delivers an excellent speed-to-power ratio, featuring a propagation delay of 40ns, operation across a supply voltage range of 1.8V to 5V, and a quiescent supply current of only 40µA per channel.
Combined with fast response times, rail-to-rail inputs, low offset voltage, and high output drive current, these characteristics make the series particularly well-suited for current sensing, zero-crossing detection, and various other speed-critical applications.
Specific model number of the comparator chip
The TLV9024-EP and TLV9034-EP are quad-channel comparator families. These Comparator chips feature low input offset voltage, fault-tolerant inputs, an excellent speed-to-power ratio, and a propagation delay of 100 ns. They operate over a supply voltage range of 1.65 V to 5.5 V, with a quiescent supply current of 25 µA per channel. In addition, these comparators do not exhibit output phase reversal, and their fault-tolerant inputs can withstand voltages up to 6 V without device damage. The TLV9024-EP incorporates an open-drain output stage capable of pulling to voltages above or below the supply rail, making it suitable for level-shifting applications. The TLV9034-EP integrates a push-pull output stage that supports bidirectional current driving with both current sourcing and sinking capability. Both the TLV9024-EP and the TLV9034-EP are specified to operate reliably over a temperature range from -55°C to +125°C.
Specific parameters of the comparator chip
|
Number of channels |
4 |
|
Output type |
Open-collector, Open-drain |
|
Propagation delay time (µs) |
0.1 |
|
Vs (max) (V) |
5.5 |
|
Vs (min) (V) |
1.65 |
|
Rating |
HiRel Enhanced Product |
|
Features |
Fail-safe, POR |
|
Iq per channel (typ) (mA) |
0.025 |
|
Vos (offset voltage at 25°C) (max) (mV) |
1.5 |
|
Rail-to-rail |
In |
|
Operating temperature range (°C) |
to |
|
Input bias current (±) (max) (nA) |
0.005 |
|
VICR (max) (V) |
5.5 |
|
VICR (min) (V) |
0 |
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