HT9274

HT9274 Quad Micropower Op Amp Features · Quad micro power op amp · Rail to rail output · Wide range of supply voltage: 1.6V~5.5V · Provides both sink and source output drive capability · High input impedance · Common mode input extends below negative rail · Single supply operation · Pin compatible with LM324/WT274 (14-pin DIP) · Low current consumption: < 5mA per amp · 14-pin DIP/SOP package Applications · Battery powered system · Signal detectors · Sensor amplifier · Active filters · Low power gain blocks · Caller ID systems · Low power comparators · Communication systems General Description pecially ideal for battery powered systems where mA range of standby current is essential for long battery life span. For example, in multi-standard Caller ID systems, HT9274 is ideal as a low power line signal monitor/detector, and in car alarm systems, the HT9274 is excellent for piezo vibratile detector signal amplifier application. The HT9274 is a CMOS quad micro-power operational amplifier featuring high input impedance, extremely low power, high gain and high stability. It allows common mode input voltage range which extends below the negative rail, output swings to both rails with a reasonable sink and souce capability of the output drive current. This cost-effective device is suitable for high gain, low frequency, low power applications, es- Comparison Table ITEM Operating Voltage Operating Current Output Source Current Output Sink Current Input Bias Current GBW Max. Load (To VDD or VSS) HT9274 1.6~5.5V 5mA 500mA 500mA 1pA 0.1MHz >10kW WT274 1.35~10V 9mA 16mA 2mA 1pA 0.1MHz >500kW LM324 3~32V 400mA 20mA 8mA 45nA 1MHz >2kW Block Diagram 1 O U T 4 O U T 1 IN - 4 IN - 1 IN + 4 IN + V D D V S S 2 IN + 3 IN + 2 IN - 3 IN 3 O U T 2 O U T Rev. 1.10 1 November 15, 2013 HT9274 Pin Assignment 1 O U T 1 1 4 4 O U T 1 IN + 3 1 2 4 IN + 1 IN - 1 3 2 V D D 1 1 4 2 IN + 2 IN - 2 O U T 1 0 5 9 6 8 7 H T 9 2 7 4 1 4 D IP -A /S O P -A 4 IN V S S 3 IN + 3 IN - 3 O U T Pin Description Pin No. Pin Name I/O Internal Connection 1 1OUT O CMOS OUT 2 1IN- I PMOS IN Inverting input pin of the op amp 1 3 1IN+ I PMOS IN Noninverting input pin of the op amp 1 4 VDD ¾ ¾ 5 2IN+ I PMOS IN Noninverting input pin of the op amp 2 6 2IN- I PMOS IN Inverting input pin of the op amp 2 7 2OUT O CMOS OUT Output pin of the op amp 2 8 3OUT O CMOS OUT Output pin of the op amp 3 9 3IN- I PMOS IN Inverting input pin of the op amp 3 10 3IN+ I PMOS IN Noninverting input pin of the op amp 3 11 VSS ¾ ¾ 12 4IN+ I PMOS IN Noninverting input pin of the op amp 4 13 4IN- I PMOS IN Inverting input pin of the op amp 4 14 4OUT O CMOS OUT Description Output pin of the op amp 1 Positive power supply Negative power supply, ground Output pin of the op amp 4 Absolute Maximum Ratings Supply Voltage ............................................-0.3V to 6V Storage Temperature ............................-50°C to 125°C Input Voltage..............................VSS-0.3V to VDD+0.3V Operating Temperature...........................-20°C to 75°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.10 2 November 15, 2013 HT9274 Electrical Characteristics Symbol VOS Parameter Ta=25°C Test Conditions VDD Conditions Vi=1.4V Min. Typ. Max. Unit ¾ ¾ 5 mV Input Offset Voltage 5V DVOS/DT Temperature Coefficient of VOS 5V ¾ ¾ 2 ¾ mV/°C IOS Input Offset Current (see note) 5V Vi=Vo=1.4V -20°C