RE46C311/2 Low-Input Leakage, Rail-to-Rail Input/Output Op Amps Features Description Low Quiescent Current: 600 nA/Amplifier (typical) The RE46C311/2 family of operational amplifiers (op amps) from Microchip Technology Inc. operate with a Rail-to-Rail Input/Output single-supply voltage as low as 1.8V, while drawing Gain Bandwidth Product: 10 kHz (typical) less than 1 A (maximum) of quiescent current per Wide Supply Voltage Range: 1.8V to 5.5V amplifier. These devices are also designed to support Unity Gain Stable rail-to-rail input and output operation. This combination Available in Single and Dual Configurations of features supports battery-powered and portable Temperature Ranges: -10C to +60C applications. The RE46C311/2 amplifiers have a gain-bandwidth Applications product of 10 kHz (typical) and are unity gain stable. These specifications make these op amps appropriate Ionization Smoke Detectors for low-frequency applications, such as ionization Low Leakage High-Impedance Input Circuits smoke detectors and sensor conditioning. Battery-Powered Circuits The RE46C311/2 family operational amplifiers are offered in single (RE46C311), and dual (RE46C312) Design Aids configurations. MAPS (Microchip Advanced Part Selector) Package Types Analog Demonstration and Evaluation Boards Application Notes RE46C311 PDIP, SOIC Typical Application V NC 1 8 NC DD Ionization 2 7 V V DD IN Chamber - V + 3 6 V IN OUT RE46C31X + V 4 5 NC SS RE46C312 PDIP, SOIC V SS V 1 8 V OUTA DD V 2 7 V INA OUTB V + 3 6 V INB INA 4 5 V + V SS INB 2013 Microchip Technology Inc. DS25163A-page 1RE46C311/2 Notice: Stresses above those listed under Absolute 1.0 ELECTRICAL Maximum Ratings may cause permanent damage to CHARACTERISTICS the device. This is a stress rating only and functional operation of the device at those or any other conditions Absolute Maximum Ratings above those indicated in the operational listings of this specification is not implied. Exposure to maximum rat- V V ........................................................................6.0V DD SS ing conditions for extended periods may affect device Current at Input Pins .....................................................2 mA reliability. All Inputs and Outputs.................... V 0.3V to V +0.3V SS DD Difference Input voltage ...................................... V V DD SS See Section 4.1, Rail-to-Rail Input. Output Short Circuit Current ..................................continuous Current at Output and Supply Pins ............................30 mA Storage Temperature....................................65C to +150C Junction Temperature..................................................+150C ESD protection on all pins (HBM MM) 4 kV 400V DC ELECTRICAL CHARACTERISTICS Electrical Characteristics: Unless otherwise indicated, V = +1.8V to +5.5V, V = GND, T = +25C, DD SS A V =V /2, V V /2, V =V /2, and R = 1 M to V (refer to Figure 1-1 and Figure 1-2). CM DD OUT DD L DD L L Parameters Sym. Min. Typ. Max. Units Conditions Input Offset Input Offset Voltage V -3 +3 mV OS Drift with Temperature V / T 2 V/CT = -10C to +60C OS A A Power Supply Rejection PSRR 70 76 dB V = V CM SS Input Leakage Current and Impedance Input Leakage Current I -0.75 0.75 pA Non Inverting Input only, L1 V =V or V IN DD SS 3.5 6 T = +60C A Input Leakage Current I -100 100 nA Inverting input only L2 13 Common Mode Z 10 6 pF CM Input Impedance 13 Differential Input Impedance Z 10 6 pF DIFF Common Mode Common-Mode Input Range V V V V CMR SS DD Common-Mode CMRR 62 86 dB V = 5V, V = 0V to 5.0V DD CM Rejection Ratio Open-Loop Gain DC Open-Loop Gain A 85 115 dB R = 50 k to V , OL L L (large signal) V = 0.1V to V -0.1V OUT DD Output Maximum Output V , V V +10 V -10 mV R = 50 k to V , OL OH SS DD L L Voltage Swing 0.5V input overdrive Output Short Circuit Current I 5 mAV = 1.8V SC DD 27 mAV = 5.5V DD Power Supply Supply Voltage V 1.8 5.5 V DD Quiescent Current I 0.3 0.6 1.0 A I = 0 Q O per Amplifier DS25163A-page 2 2013 Microchip Technology Inc.