LM2904WN

LM2904W Low power dual operational amplifier Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Internally frequency compensated Large DC voltage gain: 100dB Wide bandwidth (unity gain): 1.1MHz (temperature compensated) Very low supply current/op (500µA) Low input bias current: 20nA (temperature compensated) Low input offset current: 2nA Input common-mode voltage range includes ground Differential input voltage range equal to the power supply voltage Large output voltage swing 0V to (VCC - 1.5V) ESD internal protection: 2kV P TSSOP8 (Thin shrink small outline package) D SO-8 (Plastic micropackage) N DIP8 (Plastic package) Description This circuit consists of two independent, high gain, internally frequency compensated operational-amplifiers, designed specifically for automotive and industrial control system. It operates from a single power supply over a wide range of voltages. The low power supply drain is independent of the magnitude of the power supply voltage. Application areas include transducer amplifiers, DC gain blocks and all the conventional op-amp circuits which now can be more easily implemented in single power supply systems. For example, these circuits can be directly supplied with off the standard +5V which is used in logic systems and will easily provide the required interface electronics without requiring any additional power supply. In the linear mode the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage. Pin connections (top view) October 2006 Rev 6 1/19 www.st.com 19 Contents LM2904W Contents 1 2 3 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical single-supply applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1 4.2 4.3 SO-8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 DIP8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 TSSOP8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 6 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 LM2904W Schematic diagram 1 Schematic diagram Figure 1. Schematic diagram (1/2 LM2904W) 3/19 Absolute maximum ratings and operating conditions LM2904W 2 Absolute maximum ratings and operating conditions Table 1. Symbol VCC Vid VI Supply voltage Differential input voltage Input voltage Output short-circuit duration(1) ptot Iin Toper Tstg Power dissipation Input current (2) Absolute maximum ratings Parameter Value +32 -0.3V to VCC + 0.3 -0.3V to VCC + 0.3 Infinite 500 50 -40 to +125 -65 to +150 ambient(3) (4) 125 120 85 40 37 41 -65 to +150 2 200 1.5 + Unit V V V s mW mA °C °C Operating free-air temperature range Storage temperature range Thermal resistance junction to SO-8 TSSOP8 DIP-8 Rthja °C/W Rthjc Thermal resistance junction to case SO-8 TSSOP8 DIP-8 Storage temperature range HBM: human body model (5) °C/W Tstg °C kV V kV ESD MM: machine model(6) CDM: charged device model(7) 1. Short-circuits from the output to VCC can cause excessive heating if VCC > 15V. The maximum output current is approximately 40mA, independent of the magnitude of VCC. Destructive dissipation can result from simultaneous short-circuits on all amplifiers. 2. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the Op-amps to go to the VCC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output is restored for input voltages above -0.3V. 3. Short-circuits can cause excessive heating and destructive dissipation. 4. Rth are typical values. 5. Human body model: 100pF discharged through a 1.5kΩ resistor between two pins of the device, done for all couples of pin combinations with other pins floating. 6. Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5Ω), done for all couples of pin combinations with other pins floating. 7. Charged device model: all pins plus package are charged together to the specified voltage and then discharged directly to the ground. 4/19 LM2904W Table 2. Symbol VCC Vicm Supply voltage Common mode input voltage range Absolute maximum ratings and operating conditions Operating conditions Parameter Value 3 to 30 VCC+ - 1.5 Unit V V 5/19 Electrical characteristics LM2904W 3 Table 3. Symbol Vio Iio Iib Electrical characteristics VCC+ = 5V, VCC- = Ground, VO = 1.4V, Tamb = 25°C (unless otherwise specified) Parameter Input offset voltage (1) Input offset current Input bias current (2) Conditions Tamb = 25°C Tmin ≤ Tamb ≤ Tmax Tamb = 25°C Tmin ≤ Tamb ≤ Tmax Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 50 25 65 65 Min. Typ. 2 2 20 Max. 7 9 30 40 150 200 Unit mV nA nA Avd , VCC+ = +15V, RL=2kΩ Vo = 1.4V to 11.4V Large signal voltage gain Tamb = 25°C Tmin ≤ Tamb ≤ Tmax Supply voltage rejection ratio Supply current, all Amp, no load Input common mode voltage range RS ≤10kΩ Tamb = 25°C Tmin ≤ Tamb ≤ Tmax Tamb = 25°C, VCC = +5V Tmin ≤ Tamb ≤ Tmax, VCC = +30V VCC= +30V (3) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 100 V/mV SVR 100 0.7 1.2 2 VCC+ -1.5 VCC+ -2 85 dB Icc mA Vicm 0 0 70 60 20 10 12 0 0 26 26 27 27 V CMR RS = 10kΩ Common-mode rejection Tamb = 25°C ratio Tmin ≤ Tamb ≤ Tmax Output short-circuit current Output sink current VCC = +15V, Vo = +2V, Vid = +1V VO = 2V, VCC = +5V VO = +0.2V, VCC = +15V RL = 2kΩ Tamb = 25°C Tmin ≤ Tamb ≤ Tmax VCC + 30V Tamb = +25°C, RL = 2kΩ Tmin ≤ Tamb ≤ Tmax Tamb = +25°C, RL = 10kΩ Tmin ≤ Tamb ≤ Tmax RL = 10kΩ Tamb = +25°C Tmin ≤ Tamb ≤ Tmax , VCC = 15V, Vi = 0.5 to 3V, RL = 2kΩ CL = 100pF, unity gain Tmin ≤ Tamb ≤ Tmax f = 100kHz, VCC = 30V,Vin = 10mV, , RL = 2kΩ CL = 100pF dB Isource Isink 40 20 50 60 mA mA µA VOPP Output voltage swing VCC+ -1.5 VCC+ -2 V VOH High level output voltage 27 28 5 20 20 V VOL Low level output voltage mV SR Slew rate 0.3 0.2 0.7 0.6 V/µs GBP Gain bandwidth product 1.1 MHz 6/19 LM2904W Table 3. Symbol THD DVio DIio Electrical characteristics VCC+ = 5V, VCC- = Ground, VO = 1.4V, Tamb = 25°C (unless otherwise specified) Parameter Conditions , f = 1kHz, AV = 20dB, RL = 2kΩ Vo = 2Vpp, CL = 100pF, Vcc = 30V Min. Typ. 0.02 7 10 1kHz ≤ f ≤ 20kHz + Max. Unit % Total harmonic distortion Input offset voltage drift Input offset current drift (4) + 30 300 µV/°C pA/°C dB VO1/VO2 Channel separation 1. 120 VO = 1.4V, RS = 0Ω, 5V < VCC < 30V, 0V < Vic < VCC - 1.5V 2. The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output, so there is no change in the loading charge on the input lines. 3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ –1.5V, but either or both inputs can go to +32V without damage. 4. Due to the proximity of external components, ensure that stray capacitance between these external parts does not cause coupling. Typically, this can be detected because this type of capacitance increases at higher frequencies. 7/19 Electrical characteristics LM2904W Figure 2. 140 Open loop frequency response Figure 3. 20 Large signal frequency response LARGE SIGNAL FREQUENCY RESPONSE 100k Ω 1k Ω +15V VO +7V + 2k Ω OPEN LOOP FREQUENCY RESPONSE (NOTE 3) 10MΩ 120 0.1μF VI VCC/2 + VO OUTPUT SWING (Vpp) - VOLTAGE GAIN (dB) 100 80 60 40 20 0 1.0 10 100 VCC 15 VI VCC = 30V & -55°C Tamb +125°C 10 5 VCC = +10 to + 15V & -55°C Tamb +125°C 1k 10k 100k 1M 10M 0 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) Figure 4. Voltage follower pulse response VOLAGE FOLLOWER PULSE RESPONSE 4 Figure 5. Output characteristics OUTPUT CHARACTERISTICS 10 VCC = +5V VCC = +15V VCC = +30V 1 v cc v cc /2 IO + VO OUTPUT VOLTAGE (V) 3 2 1 0 3 RL 2 kΩ VCC = +15V OUTPUT VOLTAGE (V) 0.1 INPUT VOLTAGE (V) 2 1 0.01 0 10 20 30 40 Tamb = +25°C 0,01 0,1 1 10 100 0,001 TIME (μ s) OUTPUT SINK CURRENT (μ A) Figure 6. Voltage follower pulse response Figure 7. OUTPUT VOLTAGE REFERENCED Output characteristics OUTPUT CHARACTERISTICS 8 7 6 V CC /2 + IO VO V CC VOLTAGE FOLLOWER PULSSE RESPONSE (SMALL SIGNAL) 500 OUTPUT VOLTAGE (mV) 450 el + eO 50pF TO VCC+ (V) 400 Input 350 Output 300 250 0 1 2 3 4 5 4 3 2 1 0,001 0,01 - Independent of V CC T amb = +25°C Tamb = +25°C VCC = 30 V 5 6 7 8 0,1 1 10 100 TIME (ms) OUTPUT SOURCE CURRENT (mA) 8/19 LM2904W Electrical characteristics Figure 8. Input current INPUT CURRENT (Note 1) 90 Figure 9. 90 Current limiting CURRENT LIMITING (Note 1) OUTPUT CURRENT (mA) 80 INPUT CURRENT (mA) VI = 0 V VCC = +30 V VCC = +15 V 80 70 60 50 40 30 20 10 0 - IO 70 60 50 40 30 20 10 0 -55 -35 -15 + VCC = +5 V 5 25 45 65 85 105 125 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (°C) TEMPERATURE (°C) Figure 10. Input voltage range INPUT VOLTAGE RANGE 15 Figure 11. Supply current SUPPLY CURRENT 4 VCC SUPPLY CURRENT (mA) INPUT VOLTAGE (V) 3 mA - ID 10 Négative 2 + 5 Positive 1 Tamb = 0°C to +125°C Tamb = -55°C 0 5 10 15 0 10 20 30 POWER SUPPLY VOLTAGE (±V) POSITIVE SUPPLY VOLTAGE (V) Figure 12. Positive supply voltage 160 R L = 20kΩ VOLTAGE GAIN (dB) Figure 13. Positive supply voltage 100 INPUT CURRENT (nA) 120 R L = 2k Ω 75 50 25 80 40 Tamb= +25°C 0 10 20 30 40 POSITIVE SUPPLY VOLTAGE (V) 0 10 20 30 POSITIVE SUPPLY VOLTAGE (V) 9/19 Electrical characteristics LM2904W Figure 14. Positive supply voltage 160 R L = 20k Ω VOLTAGE GAIN (dB) Figure 15. Gain bandwidth product GAIN BANDWIDTH PRODUCT (MHz) 1.5 1.35 1.2 1.05 0.9 0.75 0.6 0.45 0.3 0.15 0 -55-35-15 5 25 45 65 85 105 125 TEMPERATURE (°C) VCC = 15V 120 R L = 2k Ω 80 40 0 10 20 30 POSITIVE SUPPLY VOLTAGE (V) Figure 16. Power supply rejection ratio POWER SUPPLY REJECTION RATIO (dB) 115 110 SVR 105 100 95 90 85 80 75 70 65 60-55-35-15 5 25 45 65 85 105 125 TEMPERATURE (°C) Figure 17. Common mode rejection ratio COMMON MODE REJECTION RATIO (dB) 115 110 105 100 95 90 85 80 75 70 65 60-55-35-15 5 25 45 65 85 105 125 TEMPERATURE (°C) Figure 18. Phase margin vs capacitive load Phase Margin at Vcc=15V and Vicm=7.5V Vs. Iout and Capacitive load value 10/19 LM2904W Electrical characteristics Typical single-supply applications Figure 19. AC coupled inverting amplifier Rf 100k Ω R1 10k Ω 1/2 LM2904 Figure 20. AC coupled non-inverting amplifier R1 100k Ω C1 0.1μF R2 1M Ω A V= 1 + R2 R1 (as shown A V = 11) Co 0 eo RL 10k Ω 2VPP CI R1 (as shown AV = -10) Co 0 eo RL 10k Ω 2VPP AV = - Rf CI 1/2 LM2904 eI ~ R2 VCC 100k Ω RB 6.2kΩ R3 100k Ω RB 6.2k Ω eI ~ R3 1MΩ R4 100k Ω VCC C1 10 μF C2 10μF R5 100kΩ Figure 21. Non-inverting DC gain A V = 1 + R2 R1 (As shown A V = 101) Figure 22. DC summing amplifier e1 100kΩ 10kΩ 1/2 LM2904 eO +5V e2 e3 100kΩ 100kΩ 100kΩ 1/2 LM2904 eO R1 10k Ω R2 1M Ω (V) e O 100kΩ e4 100kΩ eo = e1 + e2 - e3 - e4 where (e1 + e2) ≥ (e3 + e4) to keep eo ≥ 0V 0 e I (mV) Figure 23. High input Z, DC differential amplifier Figure 24. Using symmetrical amplifiers to reduce input current 1/2 I eI R2 100k Ω R1 100k Ω 1/2 LM2904 I I B LM2904 2N 929 0.001μ F eo R4 100k Ω R3 100k Ω 1/2 LM2904 IB +V1 +V2 If R1 = R5 and R3 = R4 = R6 = R7 eo = [ 1 + 2R1 ] (e2 - e1) R2 As shown eo = 101 (e2 - e1) Vo IB IB 3M Ω IB 1/2 LM2904 Input current compensation 1.5M Ω 11/19 Electrical characteristics Figure 25. Low drift peak detector IB 1/2 LM2904W Figure 26. Active bandpass filter R1 100k Ω C1 330pF R2 100k Ω +V1 1/2 LM2904 1/2 LM2904 I B LM2904 μ 1F C 2IB 2N 929 2IB R 1M Ω Zo eo R5 470k Ω 1/2 LM2904 eI ZI R4 10M Ω C2 330pF 1/2 LM2904 0.001μ F IB 3R 3M Ω IB 1/2 LM2904 R3 100k Ω R6 470k Ω Vo R7 100k Ω VCC R8 100k Ω C3 10 μF Input current compensation Fo = 1kHz Q = 50 Av = 100 (40dB) 12/19 LM2904W Package mechanical data 4 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 13/19 Package mechanical data LM2904W 4.1 SO-8 package Dimensions Ref. Min. A A1 A2 B C D E e H h L k ddd 0.1 5.80 0.25 0.40 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 6.20 0.50 1.27 0.228 0.010 0.016 8° (max.) 0.04 Millimeters Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 Min. 0.053 0.04 0.043 0.013 0.007 0.189 0.150 0.050 0.244 0.020 0.050 Inches Typ. Max. 0.069 0.010 0.065 0.020 0.010 0.197 0.157 14/19 LM2904W Package mechanical data 4.2 DIP8 package Dimensions Ref. Min. A a1 B B1 b b1 D E e e3 e4 F I L Z 0.44 3.3 1.6 0.017 8.8 2.54 7.62 7.62 7.1 4.8 0.130 0.063 0.38 0.7 1.39 0.91 0.5 0.5 9.8 0.346 0.100 0.300 0.300 0.280 0.189 0.015 1.65 1.04 Millimeters Typ. 3.3 0.28 0.055 0.036 0.020 0.20 0.386 0.065 0.041 Max. Min. Inches Typ. 0.130 Max. 15/19 Package mechanical data LM2904W 4.3 TSSOP8 package Dimensions Ref. Min. A A1 A2 b c D E E1 e K L L1 0° 0.45 0.60 1 0.05 0.80 0.19 0.09 2.90 6.20 4.30 3.00 6.40 4.40 0.65 8° 0.75 0° 0.018 0.024 0.039 1.00 Millimeters Typ. Max. 1.2 0.15 1.05 0.30 0.20 3.10 6.60 4.50 0.002 0.031 0.007 0.004 0.114 0.244 0.169 0.118 0.252 0.173 0.0256 8° 0.030 0.039 Min. Inches Typ. Max. 0.047 0.006 0.041 0.012 0.008 0.122 0.260 0.177 16/19 LM2904W Ordering information 5 Ordering information Temperature range Part number LM2904WN LM2904WD/WDT LM2904WPT LM2904WYD/WYDT LM2904WYPT Package DIP8 SO-8 Packing Tube Tube or tape & reel Tape & reel Tube or tape & reel Tape & reel Marking LM2904W 2904W 2904W 2904WY K04WY -40°C, +125°C TSSOP8 (Thin shrink outline package) SO-8 (automotive grade level) TSSOP8 (automotive grade level) 17/19 Revision history LM2904W 6 Revision history Table 4. Date 1-Sep-2003 Document revision history Revision 1 Initial release. PPAP references inserted in the datasheet see Section 5: Ordering information on page 17. ESD protection inserted in Table 1: Absolute maximum ratings on page 4. Correction of error in AVD min. value see: Table 3. on page 6 LM2904WYPT PPAP reference added in Section 5: Ordering information on page 17. Information added in Table 1: Absolute maximum ratings on page 4. Minimum value of Slew Rate at 25°C and in temperature added in Table 3. on page 6. ESD tolerance for HBM model improved to 2kV in Table 3. on page 6. Added Figure 18: Phase margin vs capacitive load on page 10. Changes 1-Jul-2005 2 1-Oct-2005 1-Dec-2005 3 4 2-May-2006 29-Sep-2006 5 6 18/19 LM2904W Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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