ELM832B CMOS Low power operational amplifier ■General description ELM832B is low power CMOS OP-AMP provided with input common mode voltage range and push-pull output stage. ELM832B makes it easy to design power circuits and is able to operate from single +1.2V power supply. ELM832B is suitable for applications such as portable devices which require low power and single source. ■Features ■Application • • • • • Battery-operated portable devices • Micropower signal process • Low voltage analog circuit Operation from a single power source Low voltage operation : 1.2V≤Vdd≤6.0V Low current consumption : 25μA (Typ. Vdd=3.0V) Common-mode input voltage range : Vss to Vdd-0.3V (Vdd=1.5V) : Vss to Vdd-0.1V (Vdd=3.0V) • Output stage : Push-pull • Unity gain bandwidth : Typ. 200kHz • Package : SOT-25 ■Maximum absolute ratings Parameter Power supply voltage Input voltage Output voltage Output short circuit Power dissipation Operating temperature Storage temperature Symbol Vdd Vin Vout Limit 10 Vss-0.3 to Vdd+0.3 Vss-0.3 to Vdd+0.3 Continuous 300 -20 to +70 -55 to +125 Pd Top Tstg Unit V V V Sec. mW °C °C ■Selection guide ELM832B-x Symbol a b Product version Taping direction ■Standard circuit ■Pin configuration 㪭㫀㫅 SOT-25 (TOP VIEW) 㪋 㪌 㪂 㪄 㪈 㪉 㪊 ELM832 B - x 㩷㩷↑ ↑ a b B S, N : Refer to PKG file Pin No. 1 2 3 4 5 Pin name OUT VDD IN+ INVSS 10 - 1 㪂 㪜㪣㪤㪏㪊㪉㪙 㪄 㪈㪇㪇㫂㱅 㪈㪇㫂㱅 㪭㫆㫌㫋 ELM832B CMOS Low power operational amplifier ■Electrical characteristics (Vdd=1.5V) Parameter Symbol Input offset voltage Vio Input bias current Common-mode input voltage range Iib Vcmr Maximum output voltage swing Vouts Large-signal voltage gain Common-mode rejection ratio Avd CMRR Supply voltage rejection ratio PSRR Current consumption Iss Unity gain bandwidth Slew rate GBW SR Condition Vin+=Vdd/2, Unity gain follower Min. For CMRR≥50dB Vid=100mV, RL=10kΩ to Vss RL=10kΩ to Vss RL=10kΩ to Vss RL=10kΩ to Vss Vdd=1.35V to 6.0V Vin+=Vdd/2, Unity gain follower 0.00 RL=100kΩ, CL=20pF 80 Condition Vin+=Vdd/2, Unity gain follower Min. For CMRR≥50dB Vid=100mV, RL=10kΩ to Vss RL=10kΩ to Vss RL=10kΩ to Vss RL=10kΩ to Vss Vdd=2.7V to 6.0V Vin+=Vdd/2, Unity gain follower 0.00 RL=100kΩ, CL=20pF 80 Vss=0V, Top=25°C Typ. Max. Unit ±6 mV 1.0 1.20 nA V 1.40 V 95 70 dB dB 95 dB 22 40 200 120 μA kHz mV/μs ■Electrical characteristics (Vdd=3.0V) Parameter Symbol Input offset voltage Vio Input bias current Common-mode input voltage range Iib Vcmr Maximum output voltage swing Vouts Large-signal voltage gain Common-mode rejection ratio Avd CMRR Supply voltage rejection ratio PSRR Current consumption Iss Unity gain bandwidth Slew rate GBW SR Vss=0V, Top=25°C Typ. Max. Unit 㪸 㪹 㪺 10 - 2 1.0 2.90 nA V V 100 70 dB dB 100 dB 25 150 100 SOT-25 Mark B 0 to 9 0 to 9 mV 2.90 ■Marking No. a b c ±6 Content ELM832B Lot No. Lot No. 45 μA kHz mV/μs ELM832B CMOS Low power operational amplifier ■Note 1) Common mode input voltage range ELM832B common mode input voltage range is fixed under the condition of CMRR≥50dB; ELM832B is able to accept the input above its specification if the degradation of CMRR is not considered. Even if the input voltage exceeds either positive or negative power voltage, troubles such as reverse of output will not occur. As maximum absolute rating, the input voltage is possible within (Vss-0.3)V to (Vdd+0.3)V. 2) Operation from single power source ELM832B is designed to be most suitable for single power source; therefore, ELM832B is able to share power supply with logic circuit one. Meanwhile, ELM832B can also operate from double power sources.To protect power supplies of ELM832B and logic circuit from noise, please separate wire from power supply and use decoupling (bypass) capacitor. Using the capacitor can improve PSRR characteristics, especially on 10kHz to 100kHz or more. 3) Feedback When OP-AMP circuit is used with feedback resistor, oscillation may happen in the circuit with loop-gain like unity gain follower. a) When large feedback resistance is used, the phase margin is decreased by its combination with the parasitic capacitance of the input part of OP-AMP. In this situation, please connect small capacitor parallelly with feedback resistor as shown in fig-1. b) For capacitive load, external resistor in series connection will be effective as shown in fig-2. (R=300 to 500Ω) c) Being used as an unity gain follow, ELM832B is able to drive capacitive load of 100pF directly without oscillation. b) fig-2 a) fig-1 㪭㫀㫅 㪭㫀㫅 㪂 㪭㫆㫌㫋 㪜㪣㪤㪏㪊㪉㪙 㪄 㪂 㪜㪣㪤㪏㪊㪉㪙 㪩 㪭㫆㫌㫋 㪄 㪚㪣 㪩㪣 10 - 3 ELM832B CMOS Low power operational amplifier ■Typical characteristics Iss - Vdd Iss - Top 45 Vcm=Vdd/2, No-Load 40 35 Top=-20ദ Iss(˩A) Iss(˩A) 30 25 +70ദ 20 15 +25ദ 10 5 0 1 2 3 4 5 34 32 30 28 26 24 22 20 18 16 14 12 Vcm=Vdd/2, No-Load Vdd=3V Vdd=1.5V -20 -10 0 6 Short-Circuit Output Current - Top Short-Circuit Output Current(mA) Percent(%) Vos - Distribution 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 Vos(mV) RL=100k˖, CL=20pF to VSS Av=+1, Vin=1Vp-p SR(mV/˩s) 180 160 Rising Edge 140 120 Falling Edge 100 80 60 -20 -10 0 40 35 Vdd=6V Short to VDD 30 25 Short to VSS 20 15 10 5 Vdd=3V Short to VDD Short to VSS 0 -20 -10 0 10 20 30 40 50 60 70 Top(ദ) SR - Top 200 10 20 30 40 50 60 70 Top(ദ) Vdd(V) 10 20 30 40 50 60 70 Top(ദ) 10 - 4 ELM832B CMOS Low power operational amplifier ■1.5V Performance Isource - Vout Isink - Vout Top=25ദ 10 10 1 Isink(mA) Isource(mA) 1 0.1 0.1 0.01 0.01 0.001 0.001 0.01 0.1 1 0.001 0.001 10 0.01 0.1 1000 RL to VDD Minimum Vout(mV) Vdd - Maximum Vout(mV) RL to VSS RL=10k˖ RL=100k˖ 1 -20 -10 0 Avd - Frequency 120 Top=25ദ 100 Avd(dB) 80 60 40 20 0.1 1 10 RL=10k˖ RL=100k˖ 10 20 30 40 50 60 70 Top(ദ) RL=10k˖ to VSS 0.01 100 1 -20 -10 0 10 20 30 40 50 60 70 Top(ദ) 0 10 Minimum Vout - Top Maximum Vout - Top 1000 10 1 Vout(V) Vout(V) 100 Top=25ദ 10 100 1000 Frequency(kHz) 10 - 5 ELM832B CMOS Low power operational amplifier CMRR - Frequency CMRR - Vcm Top=25ദ 100 100 Vcm=Vdd/2, RL to VSS 90 CMRR(dB) CMRR(dB) 90 80 RL=100k˖ 70 RL=10k˖ 80 70 60 60 50 50 0.01 0.1 1 10 40 0 100 0.5 PSRR - Frequency 120 120 RL=10k˖ to VSS RL=10k˖ or 100k˖ to VSS 110 CMRR, PSRR(dB) PSRR(dB) 80 60 40 20 100 PSRR 90 80 CMRR 70 60 50 0.1 1 10 -20 -10 0 100 SR - Top 200 RL=100k˖, CL=20pF to VSS Av=+1, Vin=1Vp-p 180 Rising Edge 140 120 Falling Edge 100 80 60 -20 -10 0 10 20 30 40 50 60 70 Top(ദ) Frequency(kHz) SR(mV/˩s) 1.5 CMRR, PSRR - Top Top=25ദ 100 160 1 Vcm(V) Frequency(kHz) 0.01 Top=25ദ RL=10k˖ to VSS 10 20 30 40 50 60 70 Top(ദ) 10 - 6 ELM832B CMOS Low power operational amplifier Gain & Phase - Frequency Gain & Phase - Frequency 40 120 40 90 30 60 Gain 10 30 0 0 -10 CL=200pF -20 1 10 100 Gain(dB) 20 CL=20pF 50 Phase(deg) Phase 30 Top=25ദ 180 Av=-100, RL=100k˖ to VSS 150 120 Phase 20 60 Gain 30 0 0 -10 -60 -20 -30 CL=200pF -60 1 10 100 1000 Frequency(kHz) Frequency(kHz) Large Signal Pulse Response Large Signal Pulse Response Top=25ദ RL=10k˖ to VSS Av=+1, Vin=1Vp-p 10˩s/Div Top=25ദ RL=10k˖ to VSS Av=-1, Vin=1Vp-p 10˩s/Div 500mV/Div 500mV/Div 500mV/Div 500mV/Div ( Non-Inverting ) ( Inverting ) Small Signal Pulse Response Small Signal Pulse Response Top=25ദ RL=10k˖ to VSS Av=+1, Vin=100mVp-p 10˩s/Div 10˩s/Div 50mV/Div 50mV/Div 50mV/Div 50mV/Div ( Non-Inverting ) Top=25ദ RL=10k˖ to VSS Av=-1, Vin=100mVp-p ( Inverting ) 10 - 7 90 10 -30 1000 CL=20pF Phase(deg) 60 50 Top=25ദ 180 Av=-100, RL=10k˖ to VSS 150 60 ELM832B CMOS Low power operational amplifier ■3.0V Performance Isource - Vout Isink - Vout Top=25ദ 10 10 1 Isink(mA) Isource(mA) 1 0.1 0.1 0.01 0.01 0.001 0.001 0.01 0.1 1 0.001 0.001 10 0.01 0.1 100 RL=10k˖ RL=100k˖ Top=25ദ RL=10k˖ to VSS 100 Avd(dB) 80 60 40 20 0.01 0.1 1 10 RL=10k˖ 10 RL=100k˖ 10 20 30 40 50 60 70 Top(ദ) Top(ദ) Avd - Frequency 100 1 -20 -10 0 10 20 30 40 50 60 70 120 RL to VDD RL=1k˖ Minimum Vout(mV) Vdd - Maximum Vout(mV) 1000 RL to VSS RL=1k˖ 0 10 Minimum Vout - Top Maximum Vout - Top 1000 1 -20 -10 0 1 Vout(V) Vout(V) 10 Top=25ദ 100 1000 Frequency(kHz) 10 - 8 ELM832B CMOS Low power operational amplifier CMRR - Frequency CMRR - Vcm Top=25ദ 100 Vcm=Vdd/2, RL to VSS RL=10k˖ to VSS 90 80 CMRR(dB) RL=100k˖ 70 RL=1k˖ or 10k˖ 80 70 60 60 50 50 0.01 0.1 1 10 40 0 100 0.5 1 PSRR - Frequency 120 RL=10k˖ to VSS PSRR RL=1k˖ 40 20 0.01 100 90 CMRR 80 70 60 50 0.1 1 10 -20 -10 0 100 10 20 30 40 50 60 70 Top(ദ) Frequency(kHz) Gain & Phase - Frequency SR - Top 200 60 RL=100k˖, CL=20pF to VSS Av=+1, Vin=1Vp-p 180 50 Top=25ദ 180 Av=-100, RL=1k˖ to VSS 150 40 160 Gain(dB) SR(mV/˩s) 3 110 60 140 2.5 120 RL to VSS RL=100k˖, 10k˖ 2 CMRR, PSRR - Top Top=25ദ CMRR, PSRR(dB) PSRR(dB) 80 1.5 Vcm(V) Frequency(kHz) Rising Edge 120 100 Falling Edge 20 90 60 Gain 10 30 0 0 -10 80 60 -20 -10 0 CL=20pF 120 Phase 30 CL=200pF -20 1 10 20 30 40 50 60 70 -60 10 100 Frequency(kHz) Top(ദ) 10 - 9 -30 1000 Phase(deg) CMRR(dB) 90 100 Top=25ദ 100 ELM832B CMOS Low power operational amplifier Gain & Phase - Frequency 50 40 CL=20pF 120 40 20 90 60 Gain 10 30 0 0 -10 CL=200pF -20 1 10 100 50 Gain(dB) Phase 30 Top=25ദ 180 Av=-100, RL=100k˖ to VSS 150 CL=20pF 120 Phase 30 20 60 Gain 10 30 0 0 -30 -10 -60 -20 -30 CL=200pF -60 1 1000 90 10 100 1000 Frequency(kHz) Frequency(kHz) Large Signal Pulse Response Large Signal Pulse Response Top=25ദ RL=10k˖ to VSS Av=+1, Vin=2Vp-p 10˩s/Div 10˩s/Div 1V/Div 1V/Div 1V/Div 1V/Div ( Non-Inverting ) ( Inverting ) Small Signal Pulse Response Small Signal Pulse Response Top=25ദ RL=10k˖ to VSS Av=+1, Vin=100mVp-p 10˩s/Div Top=25ദ RL=10k˖ to VSS Av=-1, Vin=2Vp-p 10˩s/Div 50mV/Div 50mV/Div 50mV/Div 50mV/Div ( Non-Inverting ) Top=25ദ RL=10k˖ to VSS Av=-1, Vin=100mVp-p ( Inverting ) 10 - 10 Phase(deg) 60 Phase(deg) Gain(dB) Gain & Phase - Frequency Top=25ദ 180 Av=-100, RL=10k˖ to VSS 150 60