A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER Description Features Utilizing the circuit designs perfected for two operational Short Circuit Protected Outputs amplifiers, these dual operational amplifiers feature low True Differential Input Stage power drain, a common mode input voltage range extend- Single Supply Operation: 3.0 V to 32 V ing to GND/ V EE, and single supply or split supply opera- Low Input Bias Currents tion. The GM358 is equivalent to one-half of an GM324. Internally Compensated Common Mode Range Extends to Negative These amplifiers have several distinct advantages over standard operational amplifier types in single supply applications. They can operate at supply voltages as low as 3.0 V or as high as 32 V, with quiescent currents about one-ifth of those associated with the MC1741 (on a per amplifier ba- Supply Single and Split Supply Operation ESD Clamps on the Inputs Increase Ruggedness of the Device without Affecting Operation sis). The common mode input range includes the negative supply, thereby eliminating the necessity for external biasing components in many applications. The output voltage range also includes the negative power supply voltage. SINGLE SUPPLY SPLIT SUPPLIUES 3.0V to VCC(max) VCC VCC 1.5V to VCC(max) 1 1 2 2 1.5V to VEE(max) VEE VEE/ GND GM358 V0.1 VEE/ GND www.gammamicro.com 1 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW) DIP - 8 SOP-8 Input BInput B+ Output B VCC 8 7 6 Input BInput B+ Output B VCC 5 8 7 GM358 AYWW 1 2 3 5 GM358 AYWW 1 4 Output A Input A- 6 VEE/ GND Input A+ 2 3 4 Output A Input A- VEE/ GND Input A+ Output A 1 A : Assembly Location Y : Year W W : Weekly 8 VCC Input A- 2 - Input A+ 3 + VEE/ GND 4 7 Output B - 6 Input B- + 5 Input B+ ORDERING INFORMATION Ordering Number Package Shipping GM358D8T DIP-8 60 Units / Tube GM358S8T SOP-8 100 Units / Tube GM358S8R SOP-8 2,500 Units /Tape &Reel GM358 * For detail Ordering Number identification, please see last page. 2 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER ABSOLUTE MAXIMUM RATINGS SYMBOL VALUE UNIT VCC VCC, VEE 32 ±16 Vdc Input Differential Voltage Range (Note 1 ) VIDR ±32 Vdc Input Common Mode Voltage Range(Note 2) VICR -0.3 to 32 Vdc Output Short Circuit Duration tSC Continuous - Junction Temperature TJ 150 °C RqJA 238 °C/ W TA 0 to +70 °C TSTG -55 to +125 °C - 2000 V PARAMETER Power Supply Voltage Single Supply Split Supllies Thermal Resistance, Junction - to - Air (Note 3) Operating Ambient Temperature Range Storage Temperature Range ESD Tolerance - Human Body Model (Note 4) GM358 Note 1: Split Power Supplies. Note 2: For Supply Voltages less 32V the absolute maximum input voltage is equal to the supply voltage. Note 3: RqJA for Case 846A Note 4: ESD data avilable upon request. 3 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER ELECTRICAL CHARACTERISTICS (VCC = 5V, at specified free - air temperature, unless otherwise specified) CHARACTERISTICS Input Offset Voltage Average Temperature Coefficient of Input Offset Voltage Input Offset Current Average Temperature Coefficient of Input Offset Voltage Input Bias Current Common-Mode Input Voltage Range SYMBOL VIO TEST CONDITIONS VCC = 5V to MAX VCC = VICRmin VO = 1.4V aVIO IIO VO = 1.4V VICR VO = 1.4V VOH VCC=MAX, RL=2kW VOL Full range 7 25°C 2 µV/°C 50 nA 150 Full range 10 25°C -20 pA/ °C -250 nA -500 25°C 0 to VCC-1.5 Full range 0 to VCC-2 25°C VCC-1.5 10kW V Full range 26 Full range 27 28 100 V/ mV Full range V 5 20 mV 25°C Full range 15 VCC = 5V to MAX, VIC = VICRmin 25°C 65 80 dB kSVR VCC = 5V to MAX 25°C 65 100 dB VO1/ VO2 f = 1kHz to 20kHz 25°C 120 dB VCC = 15V, VO = 0, VID = 1V 25°C -20 Full range -10 AVD Common Mode Rejection Ration CMRR Supply Voltage Rejection Ration Output Current 7 9 25 Large - Signal Differential Voltage Amplification Crosstalk Attenuation RL 10kW Unit mV Full range Full range 2kW VCC=MAX, RL Low - Level Output Voltage 3 25°C Max VCC = 5V to MAX RL High - Level Output Voltage Typ Full range aIIO IIB Min IO Short - Circuit Output Current IOS Supply current (two amplifiers) ICC VCC=15V, VO=1V to 11V, RL 2kW -30 mA VCC = 15V, VO =15V, VID = -1V 25°C 10 Full range 5 VO = 200mV, VID = -1 25°C 12 VCC at 5V, VO = 0, GND at -5V 25°C ±40 ±60 VO = 2.5V, no load Full range 0.7 1.2 1 2 VCC = MAX, VO = 0.5VCC Full range no load 20 µA 30 mA mA GM358 * All characteristics are measured under open loop conditions with zero common-mode input voltage unless otherwise specified. “MAX“ VCC for testing purposes is 30V. Full range is 0°C to 70°C. 4 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER SCHEMATIC BLOCK DIAGRAM Bias Circuitry Common to both Amplifiers VCC Output Q15 Q16 Q22 Q14 Q13 40k Q19 5.0pF Q12 Q23 Q24 25k Q18 Q20 Inputs Q11 Q9 Q21 Q17 Q6 Q7 Q5 Q2 Q3 Q4 Q1 Q8 Q25 Q10 2.0k 2.4k VEE/ GND CIRCUIT DESCRIPTION The GM358 series is made by using two internally compensated, andtwo - stage operational amplifiers. The first stage of each consists of differential input devices Q20 and Q18, with input buffer transistors Q21 and Q17, and the differential to single ended converter Q3 and Q4. The first stage performs not only the first stage gain function, but also performs the level shifting and transconductance reduction functions. By reducing the transconductance, a smaller compensation capacitor (only 5.0 pF) can be employed, thus saving chip area. The transconductance reduction is accomplished by splitting the collectors of Q20 and Q18. Another feature of this input stage is that the input common mode range can include the negative supply or ground, in single supply operation, without saturating either the input devices or the differential to single - ended converter. The second stage consists a standard current source load amplifier stage. GM358 Each amplifier is biased from an internal voltage regulator, which has a low temperature coefficient thus giving each amplifier good temperature characteristics as well as excellent power supply rejection. 5 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER Typical Performance Characteristics V CC = 15V V EE = GND T A = 25°C 100 80 60 40 20 14 0 -20 1.0 10 100 1.0k 10k 100k 100k 12 VOR, Output Voltage (mV) Avol, Open loop Voltage Range (dB) 120 1.0M 1k 10 VIN 6.0 R L =2.0W V CC =15V 4.0 V EE =GND Gain=-100 2.0 R =1.0KW I R =100kW 0 F 1.0 10 + 400 Input Output 250 200 0 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 IIB, Input Bias Current (nA) 1.8 lD + 1.5 1.2 0.9 0.6 TA =25°C RL = 0 0 5.0 10 15 20 25 30 35 t, Time(ms) VCC, Power Supply Voltage (V) Figure 3. Small Signal Voltage Follower Pulse Response (Noninverting) Figure 4. Power Supply Current versus Power Supply Voltage 80 70 0 2.0 4.0 6.0 8.0 10 12 14 16 18 20 VCC, Power Supply Voltage (V) Figure 5. Input Bias Current versus Supply Voltage GM358 mA 0.3 90 6 + V 2.1 eO 50pF ICC, Power Supply Current (mA) VO, Output Voltage (mV) 2.4 300 1000 Figure 2. Large - Signal Frequency Response 550 350 100 f, Frequency (kHZ) Figure 1. Large-Signal Open Loop Voltage Gain ein VO 2k 8.0 f, Frequency (HZ) V CC =30V 500 V EE =GND T =25°C 450 A C L =50pF +7 VDC +5 - VDC + A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER TYPICAL APPLICATIONS 50k 1 C R - e1 1/2 R GM358 + 5.0k VCC 10k 1/2 1/2 + VO + fO= 1 Vref= VCC 2 1 2 RC 1/2 GM358 e2 + R R = 16kW C = 0.01µF C C 1 C R - For: fO = 1.0kHz R e0 GM358 bR1 GM358 R - aR1 R1 - Vref e0 = C(1 + a + b) (e2 - e1) Figure 7. High Impedance Differential Amplifier Figure 6. Wien Bridge Oscillator R2 C Hysteresis VOH VO R1 - Vref 1/2 VCC R3 C R1 - 1/2 VO GM358 Vin Vin GM358 R2 + C0 C0 =10C + R1 (V - Vref) + Vref R2 + R2 OL R1 VINH= (V - vref) + Vref R2 + R2 OL R1 H= (V - VOL) R2 + R2 OH VINL= VOL VINH Vref Given: Vref = 1 V 2 CC f0 = center frequency A(f0) = gain center frequency Choose value f0, C Figure 8. Comparator with Hysteresis R1* 0.1 Vref VINL VO IL VL Then: R3 = Q p f0 C R1 = R3 2 A(f0) R1 R3 2 4Q R1 -R2 Q f For less than 10% error from operational amplifier. 0 0 < 0.1 BW Where f0 and BW are expressed in Hz. R2 = RL - 1/2 GM358 + R3 1k If source impedance varies, filter may be preceded with voltage follower buffer to stabilize filter parameter. Figure 9. Multiple Feedback Bandpass Filter VO VO = 1V(IL) 1A *(Increase R1 for IL small) + VL V - 2 Figure 10. Current Monitor - 1/2 GM358 + VIN VO + VO = VIN Figure 11. Voltage Follower GM358 R2 100 7 A Signal Conditioning GM358 A MICROELECTRONICS DUAL OPERATIONAL AMPLIFIER SOP-8 PACKAGE OUTLINE DIMENSIONS 0.008 +0.0018 -0.0005 0.200 +0.05 -0.01 0 ° ~ 8° 0.028 0.710 +0.013 -0.022 Pad Layout 0.060 +0.33 -0.56 1.52 0.236 ± 0.008 5.990 +0.21 -0.20 0.154 +0.003 -0.004 0.275 0.155 7.0 4.0 PIN INDENT 3.91 ± 0.1 0.024 0.050 0.6 1.270 Inches ( mm ) 0.063 ± 0.005 1.600 ± 0.130 0.191 +0.002 -0.004 4.850 +0.05 -0.10 0.057 NOM 1.450 NOM ( Inches ) mm 0.007 ± 0.003 0.175 ± 0.075 0.050 NOM 1.270 NOM 0.016 +0.004 -0.003 0.410 +0.10 -0.08 DIP-8 PACKAGE OUTLINE DIMENSIONS 0.26 ± 0.006 6.60 +0.15 -0.16 0.30 +0.010 -0.015 7.62 +0.25 -0.38 0.36 ± 0.01 9.14 +0.25 -0.26 GM358 0.365 ± 0.02 9.27 ± 0.51 8 0.13 +0.002 -0.006 3.30 +0.05 -0.15 0.180 MAX 4.570 MAX 0.015 MIN 0.380 MIN 0.125 MIN 3.180 MIN 0.018 ± 0.004 0.46 ± 0.10 0.039 ± 0.07 0.99 ± 0.18 0.06 ± 0.01 1.52 +0.26 -0.25 0.100 NOM 2.540 NOM 0.021 ± 0.005 0.53 +0.12 -0.13 ( Inches ) mm 0.01 +0.002 -0.003 0.25 +0.05 -0.08 A A MICROELECTRONICS Signal Conditioning GM358 DUAL OPERATIONAL AMPLIFIER ORDERING NUMBER GM 358 S8 R Gamma Micro. Shipping R: Tape & Reel Circuit Type GM358 Package S8: SOP-8 D8: DIP-8 9 A A MICROELECTRONICS Signal Conditioning GM358 GM358 DUAL OPERATIONAL AMPLIFIER 10