Datasheet MAX931, MAX932, MAX933, MAX934 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Ultra-Low-Power, Low-Cost Comparators with 2% Reference |
| Pages / Page | 16 / 8 — Ultra Low-Power, Low-Cost Comparators with 2% Reference. … |
| File Format / Size | PDF / 168 Kb |
| Document Language | English |
Ultra Low-Power, Low-Cost Comparators with 2% Reference. _______________Detailed Description. MAX931-MAX934
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Ultra Low-Power, Low-Cost Comparators with 2% Reference _______________Detailed Description
a separate ground for the output driver, allowing operation with dual supplies ranging from ±1.25V to The MAX931-MAX934 comprise various combinations ±5.5V. Connect V- to GND when operating the of a micropower 1.182V reference and a micropower MAX931 and the MAX934 from a single supply. The comparator. The Typical Operating Circuit shows the maximum supply voltage in this case is still 11V. MAX931 configuration, and Figures 1a-1c show the MAX932/MAX933/MAX934 configurations. For proper comparator operation, the input signal can be driven from the negative supply (V-) to within one Each comparator continuously sources up to 40mA, and volt of the positive supply (V+ - 1V). The guaranteed the unique output stage eliminates crowbar glitches common-mode input voltage range extends from during output transitions. This makes them immune to V- to (V+ - 1.3V). The inputs can be taken above and parasitic feedback (which can cause instability) and below the supply rails by up to 300mV without damage. provides excellent performance, even when circuit- board layout is not optimal. Operating the MAX931 and MAX934 at ±5V provides TTL/CMOS compatibility when monitoring bipolar input Internal hysteresis in the MAX931/MAX932/MAX933 signals. TTL compatibility for the MAX932 and MAX933 provides the easiest method for implementing is achieved by operation from a single +5V supply.
MAX931-MAX934
hysteresis. It also produces faster hysteresis action and consumes much less current than circuits using
Low-Voltage Operation: V+ = 1V
external positive feedback.
(MAX934 Only) Power-Supply and Input Signal Ranges
The guaranteed minimum operating voltage is 2.5V (or This family of devices operates from a single +2.5V to ±1.25V). As the total supply voltage is reduced below +11V power supply. The MAX931 and MAX934 have 2.5V, the performance degrades and the supply MAX932 OUTA OUTB 1 8 MAX934 V- V+ 2 7 OUTB OUTC 1 16 INA+ REF 3 6 OUTA OUTD 2 15 INB+ HYST 4 5 3 V+ GND 14 V- A D INA- IND+ 4 13 Figure 1a. MAX932 Functional Diagram INA+ IND- 5 12 MAX933 B C OUTA OUTB 1 8 INC+ 6 INB- 11 V- V+ 2 7 INB+ INC- 7 10 INA+ REF 3 6 REF V- 8 9 INB- HYST 4 5 V- Figure 1b. MAX933 Functional Diagram Figure 1c. MAX934 Functional Diagram
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a separate ground for the output driver, allowing operation with dual supplies ranging from ±1.25V to The MAX931-MAX934 comprise various combinations ±5.5V. Connect V- to GND when operating the of a micropower 1.182V reference and a micropower MAX931 and the MAX934 from a single supply. The comparator. The Typical Operating Circuit shows the maximum supply voltage in this case is still 11V. MAX931 configuration, and Figures 1a-1c show the MAX932/MAX933/MAX934 configurations. For proper comparator operation, the input signal can be driven from the negative supply (V-) to within one Each comparator continuously sources up to 40mA, and volt of the positive supply (V+ - 1V). The guaranteed the unique output stage eliminates crowbar glitches common-mode input voltage range extends from during output transitions. This makes them immune to V- to (V+ - 1.3V). The inputs can be taken above and parasitic feedback (which can cause instability) and below the supply rails by up to 300mV without damage. provides excellent performance, even when circuit- board layout is not optimal. Operating the MAX931 and MAX934 at ±5V provides TTL/CMOS compatibility when monitoring bipolar input Internal hysteresis in the MAX931/MAX932/MAX933 signals. TTL compatibility for the MAX932 and MAX933 provides the easiest method for implementing is achieved by operation from a single +5V supply.
MAX931-MAX934
hysteresis. It also produces faster hysteresis action and consumes much less current than circuits using
Low-Voltage Operation: V+ = 1V
external positive feedback.
(MAX934 Only) Power-Supply and Input Signal Ranges
The guaranteed minimum operating voltage is 2.5V (or This family of devices operates from a single +2.5V to ±1.25V). As the total supply voltage is reduced below +11V power supply. The MAX931 and MAX934 have 2.5V, the performance degrades and the supply MAX932 OUTA OUTB 1 8 MAX934 V- V+ 2 7 OUTB OUTC 1 16 INA+ REF 3 6 OUTA OUTD 2 15 INB+ HYST 4 5 3 V+ GND 14 V- A D INA- IND+ 4 13 Figure 1a. MAX932 Functional Diagram INA+ IND- 5 12 MAX933 B C OUTA OUTB 1 8 INC+ 6 INB- 11 V- V+ 2 7 INB+ INC- 7 10 INA+ REF 3 6 REF V- 8 9 INB- HYST 4 5 V- Figure 1b. MAX933 Functional Diagram Figure 1c. MAX934 Functional Diagram
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