LM2903V

Part: LM393 — ON Semiconductor

Type: Dual Independent Precision Voltage Comparators

Description: Dual independent precision voltage comparators capable of single or split supply operation, featuring a wide single-supply range of 2.0 Vdc to 36 Vdc, very low current drain of 0.4 mA, and low input offset voltage of 5.0 mV (max) for LM293/393.

Operating Conditions:

• Supply voltage: 2.0 Vdc to 36 Vdc (single supply) or ±1.0 Vdc to ±18 Vdc (split supply)
• Operating temperature: 0 to +70 °C (suffix-dependent — see Operating Ambient Temperature Range table for grade-specific ranges)
• Input common mode range: 0 V to VCC - 1.5 V

Absolute Maximum Ratings:

• Max supply voltage: +36 or ±18 V
• Max continuous current: 20 mA (Output Sink Current)
• Max junction/storage temperature: 150 °C (Junction), -65 to +150 °C (Storage)

Key Specs:

• Input Offset Voltage (V_IO): ±1.0 mV (Typ, TA = 25 °C)
• Input Offset Voltage (V_IO): ±5.0 mV (Max, TA = 25 °C, for LM293, LM393, LM393E)
• Input Offset Current (I_IO): ±5.0 nA (Typ, TA = 25 °C)
• Input Bias Current (I_IB): 20 nA (Typ, TA = 25 °C)
• Output Sink Current (I_Sink): 16 mA (Typ, V_in- ≥ 1.0 Vdc, V_in+ = 0 Vdc, V_O ≤ 1.5 Vdc, TA = 25 °C)
• Large Signal Response Time (t_TLH): 1.3 μs (Typ, V_RL = 5.0 Vdc, R_L = 5.1 kΩ, TA = 25 °C, for LM293, LM393, LM393E)
• Supply Current (I_CC): 0.4 mA (Typ, R_L = ∞, Both Comparators, V_CC = 30 V)
• Output Saturation Voltage (V_OL): 150 mV (Typ, V_in- ≥ 1.0 Vdc, V_in+ = 0, I_Sink ≤ 4.0 mA, TA = 25 °C)

Features:

• Split-Supply Range: ±1.0 Vdc to ±18 Vdc
• Wide Single-Supply Range: 2.0 Vdc to 36 Vdc
• Very Low Current Drain Independent of Supply Voltage: 0.4 mA
• Low Input Offset Current: 5.0 nA
• Low Input Bias Current: 25 nA
• Low Input Offset Voltage: 5.0 mV (max) LM293/393
• Differential Input Voltage Range Equal to Power Supply Voltage
• Input Common Mode Range to Ground Level
• Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels
• ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance
• Pb-Free, Halogen Free/BFR Free and RoHS Compliant

Applications:

• Zero Crossing Detector (Single Supply)
• Zero Crossing Detector (Split Supply)
• Free-Running Square-Wave Oscillator
• Time Delay Generator
• Comparator with Hysteresis

Package:

• Micro8
• PDIP-8
• SOIC-8

• Split -Supply Range: ± 1.0 Vdc to ± 18 Vdc
• Wide Single -Supply Range: 2.0 Vdc to 36 Vdc
• Very Low Current Drain Independent of Supply Voltage: 0.4 mA
• Low Input Offset Current: 5.0 nA
• Low Input Bias Current: 25 nA
• Low Input Offset Voltage: 5.0 mV (max) LM293/393
• Differential Input Voltage Range Equal to Power Supply Voltage
• Input Common Mode Range to Ground Level
• Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels
• NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC -Q100 Qualified and PPAP Capable
• ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance
• These Devices are Pb -Free, Halogen Free/BFR Free and are RoHS Compliant

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Micro8 E DM SUFFIX CASE 846A

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These dual comparators feature high gain, wide bandwidth characteristics. This gives the device oscillation tendencies if the outputs are capacitively coupled to the inputs via stray capacitance. This oscillation manifests itself during output transitions (V OL to V OH ). To alleviate this situation, input resistors <10 k W should be used.

D1 prevents input from going negative by more than 0.6 V.

Figure 8. Zero Crossing Detector (Single Supply)

Figure 10. Free -Running Square -Wave Oscillator

The addition of positive feedback (<10 mV) is also recommended. It is good design practice to ground all unused pins.

Differential input voltages may be larger than supply voltage without damaging the comparator's inputs. V oltages more negative than -0.3 V should not be used.

Vin(min) [ 0.4 V peak for 1% phase distortion ( DQ ).

Figure 9. Zero Crossing Detector (Split Supply)

Figure 11. Time Delay Generator

Figure 12. Comparator with Hysteresis

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.

1. The maximum output current may be as high as 20 mA, independent of the magnitude of V CC , output short circuits to V CC can cause excessive heating and eventual destruction.

2. NCV2903 is qualified for automotive use.