LND324

• DATA SHEET LND324 Quadruple Operational Amplifiers GENERAL DESCRIPTION The LND324 consists of four independent, High Gain, Internally Frequency compensated operational amplifiers that are designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible as long as the different between them is 3 volts to 32 volts. Applications include transducer amplifiers, DC Amplification Blocks and all the conventional operational-amplifier circuits, that now can be more easily implemented in single-supplyvoltage systems. FEATURES • • • • • Internally frequency compensated for unity Gain Large DC voltage gain: 100dB W ide Power Supply Range : 3V to 30V Input Common-Mode Voltage Range Includes Ground Large Output Voltage Swing 0V to VCC-1.5V INTERNAL BLOCK DIAGRAM ADVANTAGES • Eliminates need for dual supplies Four internally compensated op amps in a single package Allows directly sensing near GND and VOUT also goes to GND Compatible with all forms of logic Power drain suitable for battery operation OUT 1 IN 1 IN 1 + Vcc IN 2 + IN 2 OUT 2 1 2 3 4 5 6 7 14 OUT 4 IN 4 IN 4 + GND IN 3 + IN 3 OUT 3 1 4 -++- • • • • 13 12 11 10 • Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com • -++2 3 9 8 LND324 ELECTRICAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS at specified free-air temperature, VCC =5V(unless otherwise noted) PARAMETER VIO Input offset voltage αVIO average temperature coefficient of input offset voltage IIO Input offset current αIIO Average temperature coefficient of input offset current IIB Input bias current VICR Common-mode input voltage range VOH High level output voltage VOL Low- level output voltage AVD Large signal differential voltage Amplification CMRR Common-mode rejection ratio ksvr Supply voltage rejection ratio(∆VCC∆VIO) VO1/VO2 Crosstalk attention TEST CONDITIONS* VCC=5V to Max, VICR min, VO=1.4V 25°C Full Range MIN LM324 TYP 3 MAX 7 9 UNIT mV Full Range 25°C Full Range Full Range 25°C Full Range 25°C VCC=5V to MAX RL≥ 2kΩ VCC=MAX, RL=2kΩ VCC=MAX, RL≥10kΩ RL≥ 10kΩ VCC=15V, VO=1v to 11V RL≥ 2kΩ VCC=5V to MAX, VIC=VICRmin VCC=5V to MAX f=1kHz to 20kHz VCC=15V, VID=1V, VO=0 Full Range 25°C Full Range Full Range Full Range 25°C Full Range 25°C 25°C 25°C 25°C Full range 25°C Full range 25°C 25°C Full Range Full range -20 -10 10 5 12 25 15 65 65 0 0 26 27 7 2 50 150 µV/°C VO=1.4 nA 10 -20 -250 -500 VCC-1.5 VCC-2 VCC-1.5 pA/°C VO=1.4 nA V V 28 5 100 V/ mV 20 mV 80 100 120 -30 20 30 ± 40 0.7 1.1 ± 60 1.2 3 dB dB dB IO Output Current IOS Short –circuit output current ICC Supply current VCC=15V, VID=-1V, VO=15V VID=-1V,VO=200mV VCC at 5V, GND at –5V, VO=0 VO=2.5V, No Load VCC=MAX, VO=0.5VCC , No load mA µA mA mA *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. • Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com • LND324 APPLICATION HINTS The LM324 Op amps which operate with only a single supply voltage, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. These amplifiers operate over a wide range of power supply voltages with little change in performance characteristics. Precautions should be taken to insure that the power supply for the intergrated circuit never becomes reversed in polarity or that the unit is not inadvertently installed backwards in a test socket as an unlimited current surge through the resulting forward diode within the IC could cause fusing of the internal conductors and result in a destroyed unit. Large differential input voltages can be easily accommodated and as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltages from going negative more than –0.3VDC(25 °C). An input clamp diode with a resistor to the IC input terminal could be used. The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage. If complementary power supplies are available, all of the standard op-amp circuits can be used. In general, introducing a pseudo-ground( a bias voltage reference of V+/2) will allow operation above and below this value in single power supply systems. Many applications circuits are shown which take advantage of the wide input common-mode voltage range, which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated. TYPICAL APPLICATIONS +VIN * + LND324 1M R2 10K R1 +VO +5 V Vo (Volts) GAIN =1+(R2/R1) =101 (as shown) *R not needed due to temperature independentIN I O VIN (mV) Non Inverting DC Gain ( 0 V Output ) +VIN +V LND324 + REF 10K LND324 + VO +V IN VO 10M VOLTAGE FOLLOWER COMPARATOR WITH HYSTERESIS • Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com • LND324 VL 0.1 R1 * R2 IL RL 910k R1 100k R2 V+ 100 LND324 + LND324 + VO 1K VO R3 Vo = 1V(IL )/1A VL