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MAX9030 Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX9030 Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 10 page Detailed Description The MAX9030/MAX9031/MAX9032/MAX9034 are sin- gle/dual/quad low-cost comparators. They have an operating supply voltage from +2.5V to +5.5V when operating from a single supply and from ±1.25V to ±2.75V when operating from dual power supplies, and consume only 35µA. Their common-mode input voltage range extends from the negative supply to within 1.1V of the positive supply. Internal hysteresis ensures clean output switching, even with slow-moving input signals. Shutdown Mode The MAX9030 comparator comes with a power-saving shutdown mode. When in shutdown, the supply current drops from a typical 35µA to 0.05µA, and the outputs become high impedance. SHDN has a high input imped- ance and typically draws 0.1µA when connected to VSS or VDD. A maximum logic low voltage of 0.3V ✕ VDD applied to SHDN places the device in the shutdown mode. A minimum logic high voltage of 0.7V ✕ VDD applied to SHDN will enable normal operation. To dis- able shutdown, connect SHDN to VDD. Applications Information Adding Hysteresis Hysteresis extends the comparator’s noise margin by increasing the upper threshold and decreasing the lower threshold. A voltage-divider from the output of the comparator sets the trip voltage. Therefore, the trip volt- age is related to the output voltage. These comparators have 4mV internal hysteresis. Additional hysteresis can be generated with two resis- tors using positive feedback (Figure 1). Use the follow- ing procedure to calculate resistor values: Low-Cost, Ultra-Small, Single/Dual/Quad Single-Supply Comparators 6 _______________________________________________________________________________________ Pin Description PIN MAX9030 MAX9031 MAX9032 MAX9034 NAME FUNCTION 1 1 — — IN+ Comparator Noninverting Input 224 11 VSS Negative Supply Voltage. Bypass with a 0.1µF capacitor. 3 3 — — IN- Comparator Inverting Input 4 4 — — OUT Comparator Output 5— — — SHDN Shutdown 658 4 VDD Positive Supply Voltage. Bypass with a 0.1µF capacitor. — — 1 1 OUTA Comparator A Output — — 2 2 INA- Comparator A Inverting Input — — 3 3 INA+ Comparator A Noninverting Input — — 5 5 INB+ Comparator B Noninverting Input — — 6 6 INB- Comparator B Inverting Input — — 7 7 OUTB Comparator B Output — — — 8 OUTC Comparator C Output — — — 9 INC- Comparator C Inverting Input — — — 10 INC+ Comparator C Noninverting Input — — — 12 IND+ Comparator D Noninverting Input — — — 13 IND- Comparator D Inverting Input — — — 14 OUTD Comparator D Output |
Similar Part No. - MAX9030_10 |
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Similar Description - MAX9030_10 |
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