BL321 Low Power Single Op Amp DESCRIPTION The BL321 brings performance and economy to low power systems. With a high unity gain frequency and FEATURES a guaranteed 0.4V/s slew rate, the quiescent current Gain-Bandwidth product: 1MHz is only 430A/amplifier (5V). The input common Low supply current: 430A mode range includes ground and therefore the device Low input bias current: 45nA is able to operate in single supply applications as well Wide supply voltage range: +3V to +25V as in dual supply applications. It is also capable of APPLICATION comfortably driving large capacitive loads. Chargers Power supplies The BL321 is available in the SOT-23-5L package. Industrial: controls, instruments Overall the BL321 is a low power, wide supply range Desktops performance op amp that can be designed into a wide Communications infrastructure range of applications at an economical price without sacrificing valuable board space. LOCK DIAGRAM MARKING INFORMATION Y: Year Code WW: Week Code ABSOLUTE MAXIMUM RATINGS (Note 1) Characteristic Value Unit + - Supply Voltage,(V - V ) 25 V Input Voltage -0.3~+25 V + Output Short Circuit to GND V 15V anf Ta=25 Note2 Continuous Junction Temperature (Note3) 150 Thermal Resistance to Ambient ( ) 265 JA Operating Temperature Range -40~+85 Storage Temperature Range -65~+150 Page 1 BL321 Datasheet V1.0 BL321 Low Power Single Op Amp + ELECTRICAL CHARACTERISTICS (Unless otherwise specified: V =5.0V) Parameter Test Conditions Min. Typ. Max. Unit Input Offset Voltage 2 5 mV Ta=25Note 4 Ta=25, IIN(+) or IIN-, Input Bias Current 45 150 nA VCM=0V Note 5 Input Offset Current Ta=25IIN(+) - IIN-VCM=0V 3 30 nA Input Common-Mode + + Ta=25V =25VNote 6 0 V -1.5 V Voltage Range + V =25V 0.4 2 Over Full Temperature Range, Supply Current mA + RL= on all Op Amps V =5V 0.33 1.2 + V =15VTa=25RL2k Large Signal Voltage Gain 80 100 V/mV For Vo=1~11V Common-Mode Rejection + DCTa=25VCM=0~V -1.5V 70 90 dB Ratio Power Supply + DCTa=25V =5~25V 70 85 dB Rejection Ratio Ta=25f=1~20kHz Amplifier-to-Amplifier -120 dB Coupling Input ReferredNote 7 + VIN(+)=1V,VIN(-)=0V,V =15V,Vo=2V, Source 20 50 mA Ta=25 + VIN(-)=1V,VIN(+)=0V,V =15V,Vo=2V, Output Current 4 6 mA Ta=25 Sink + VIN(-)=1V,VIN(+)=0V,V =15V, 8 45 A Vo=200mV,Ta=25 + Short Circuit to Ground V =15V Ta=25Note 2 40 85 mA RL=2k 22 23 V + VOH V =25V Output Voltage 22 23.5 V RL=10k Swing + VOL V =5VRL=10k 20 mV Note 1 Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics. + Note 2: Short circuits from the output to V can cause excessive heating and eventual destruction. When considering + short circuits to ground, the maximum output current is approximately 40mA independent of the magnitude of V . At values of supply voltage in excess of +15V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. Note 3: The maximum power dissipation is a function of T , , and Ta. The maximum allowable power J(MAX) JA dissipation at any ambient temperature is P = (T - Ta)/ . All numbers apply for packages soldered D J(MAX) JA directly onto a PC board. + + Note 4: Vo=1.4V, Rs = 0 with V from 5V to 25V and over the full input common-mode range (0V to V -1.5V) at 25C Note 5: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines. Note 6: The input common-mode voltage of either input signal voltage should not be allowed to go negative by + more than 0.3V (at 25C). The upper end of them common-mode voltage range is V -1.5V (at 25C), but either or + both inputs can go to +25Vwithout damage, independent of the magnitude of V . Note 7: Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This typically can be detected as this type of capacitance increases at higher frequencies. Page 2 BL321 Datasheet V1.0