L2720W13TR

L2720W Low drop dual power operational amplifiers Features „ Output current up to 1 A „ Operates at low voltages „ Single or split supply „ Large common-mode and differential-mode range „ Low input-offset voltage „ Ground compatible inputs „ Low saturation voltage „ Thermal shutdown „ Clamp diode SO16 (Wide) Description The L2720W is a monolithic integrated circuit in SO16 (Wide) package, intended for use as a power operational amplifier in a wide range of applications including servo amplifiers and power supplies. It is particularly suitable for driving coils, inductive loads and for use in motors. The high gain and high output power capability provide superior performance whenever an operational amplifier/power booster combination is required. Table 1. Device summary Order code Package Packaging L2720W SO16 (Wide) Tube L2720W13TR SO16 (Wide) Tape and reel September 2010 Doc ID 13407 Rev 2 1/12 www.st.com 12 Connection diagrams 1 L2720W Connection diagrams Figure 1. Figure 2. Block diagram VS 1 OUTB 2 N.C. 3 VEE / GND 4 VEE / GND 5 N.C. 6 INB- 7 INB+ 8 16 OUTA 15 N.C. 14 N.C. 13 VEE / GND - + + - 12 VEE / GND 11 N.C. 10 INA9 INA+ Schematic diagram (one amplifier) VS IN+ OUT Dump protection 10pF IN- Thermal protection VEE / GND S-9526 2/12 Doc ID 13407 Rev 2 L2720W 2 Pin out Pin out Figure 3. Pin connection (top view) Table 2. VS 1 16 OUTA OUTB 2 15 N.C. N.C. 3 14 N.C. VEE / GND 4 13 VEE / GND VEE / GND 5 12 VEE / GND N.C. 6 11 N.C. INB- 7 10 INA- INB+ 8 9 INA+ Pin description Pin Name Type Description 1 VS Power Power supply positive 2 OUTB Output Amplifier B output 3 N.C. - No internal connection 4 VEE / GND Power Power supply negative or ground 5 VEE / GND Power Power supply negative or ground 6 N.C. - No internal connection 7 INB- Input Amplifier B input 8 INB+ Input Amplifier B input 9 INA+ Input Amplifier A input 10 INA- Input Amplifier A input 11 N.C. - No internal connection 12 VEE / GND Power Power supply negative or ground 13 VEE / GND Power Power supply negative or ground 14 N.C. - No internal connection 15 N.C. - No internal connection 16 OUTA Output Amplifier A output Doc ID 13407 Rev 2 3/12 Electrical specifications L2720W 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Pin/symbol 3.2 Description Min Max Unit VS Supply voltage - 28 V VS-PK Peak supply voltage (50 ms) - 50 V Vi Input voltage range - Vs V Vi Differential input voltage range - ±Vs V IO DC output current - 1 A IO-PK Peak output current (non repetitive) - 1.5 A Top Operating ambient temperature range -40 125 °C Tstg, Tj Storage and junction temperature range -40 150 °C Thermal data Table 4. Thermal data Device Rth j-amb Rth j-case Parameter Min Thermal resistance junction to ambient (1) Thermal resistance junction to case pins (2) Typ Max Unit - 65 - °C/W - 12 - °C/W 1. On double layer PCB with 4 cm2 copper dissipating area 2. Referred to pins 4, 5, 12 and 13. 3.3 Recommended operating conditions Table 5. Recommended operating conditions Symbol VS VE VIN 4/12 Parameter Min Typ Max Unit Positive single power supply 4.0 - 28 V Positive split power supply 2.0 - 14 V Negative single power supply - 0 - V Negative split power supply -2.0 - -14 V Input voltage - - VS to VE V Doc ID 13407 Rev 2 L2720W 3.4 Electrical specifications Electrical characteristics The electrical specifications in Table 6 below are given for operation under the conditions VS = 24 V, Tamb = -40 °C to 125 °C and RI connected to GND, unless otherwise specified Table 6. Electrical characteristics Symbol Parameter Is Quiescent current Iib Input bias current Iob Input offset current Conditions Min Typ Max Tamb = 25 °C - 10 15 - - 10 18 Tamb = 25 °C - 0.2 1 - 0.2 1 Tamb = 25 °C - - 100 - - - 100 Tamb = 25 °C -10 - 10 - -10 - 10 VO = VS / 2 VCM = 0 VCM = 0 - Unit mA µA nA Vos Input offset voltage ∆Vos/∆T Average temperature coefficient of Vos - - 20 - µV/° C SR Slew rate Vin = -10 V to +10 V, RL = 2 kΩ, CL = 100 pF, Av = -1, Tamb = 25 °C - 2 - V/µs B Gain-bandwidth product - - 1.2 - MHz f = 100 Hz 70 80 - Gv Open loop voltage gain f = 1 kHz - 60 - CMRR Common mode rejection ratio f = 1 kHz 66 84 - - 70 - Supply voltage rejection ratio f = 100 Hz RG = 10 kΩ VR = 0.5 V Vs = 24 V SVRR Vs = ±12 V 60 75 - Tamb = 25 °C - 0.7 1 - - 0.8 1.5 Tamb = 25 °C - 1.0 1.5 - - 1.1 1.5 Tamb = 25 °C - 0.3 0.7 - - 0.4 1 Tamb = 25 °C - 0.5 1 - - 1.3 1.5 Vs = 24 V - 60 - Vs = 6 V - 60 - - 10 - dB Ip = 100 mA VDROP(H) V Ip = 100 mA V Drop voltage low Ip = 1 A Cs Channel separation eN Input noise voltage dB dB Drop voltage high Ip = 1 A VDROP(L) mV f = 1 kHz; RL = 10 Ω; Gv = 30 dB dB B = 22 Hz to 22 kHz, Tamb = 25 °C Doc ID 13407 Rev 2 µV 5/12 Electrical specifications Table 6. L2720W Electrical characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit IN Input noise current B = 22 Hz to 22 kHz, Tamb = 25 °C - 200 - pA φm Phase margin RL = 2 kΩ, CL = 100 pF, Tamb = 25 °C - 65 - °C Am Gain margin RL = 2 kΩ, CL = 100 pF, Tamb = 25 °C - 15 - dB 3.5 6/12 Characterization curves Figure 4. Quiescent current vs supply current Figure 5. Open loop gain vs frequency Doc ID 13407 Rev 2 L2720W Electrical specifications Figure 6. Common mode rejection vs frequency Figure 7. Output swing vs load current (Vs = ±5 V) Figure 8. Output swing vs load current (Vs = ±12 V) Doc ID 13407 Rev 2 7/12 Electrical specifications Figure 9. L2720W Supply voltage rejection vs frequency Figure 10. Channel separation vs frequency Figure 11. Voltage gain and phase vs frequency Fig.8 Voltage Gain and Phase vs Freq Gv (dB) 80 70 60 Vs=24V Rl = 2 k? 50 40 30 20 10 0 -10 -20 1 8/12 10 100 f (KHz) Doc ID 13407 Rev 2 1000 80 Phase(°) -80 90 -90 100 -100 110 -110 120 -120 130 -130 10000 L2720W Electrical specifications Figure 12. Phase margin vs output load capacitance Phase margin (degrees) 70 60 50 Vs = ±12 V R1 = 2 KΩ 40 30 20 0 0.4 0.8 Doc ID 13407 Rev 2 1.2 1.6 2 9/12 Package mechanical data 4 L2720W Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Figure 13. SO16 (Wide) mechanical data and package dimensions mm inch DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 2.35 - 2.65 0.093 - 0.104 A1 0.10 - 0.30 0.004 - 0.012 B 0.33 - 0.51 0.013 - 0.200 0.23 - 0.32 0.009 - 0.013 10.10 - 10.50 0.398 - 0.413 E 7.40 - 7.60 0.291 - 0.299 e - 1.27 - - 0.050 - H 10.0 - 10.65 0.394 - 0.419 h 0.25 - 0.75 0.010 - 0.030 L 0.40 - 1.27 0.016 - 0.050 - 0.004 C D (1) k ddd OUTLINE AND MECHANICAL DATA 0° (min.), 8° (max.) - - 0.10 - (1) “D” dimension does not include mold flash, protusions or gate burrs. Mold flash, protusions or gate burrs shall not exceed 0.15mm per side. SO16 (Wide) 0016021 C 10/12 Doc ID 13407 Rev 2 L2720W 5 Revision history Revision history Table 7. Document revision history Date Revision Changes 04-Apr-2007 1 Initial release. 03-Sep-2010 2 Complete update and change in presentation Doc ID 13407 Rev 2 11/12 L2720W Please Read Carefully: Information in this document is provided solely in connection with ST products. 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