QUAD ULTRA MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER GEN

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QUAD ULTRA MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER GEN

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ALD4706A/ALD4706B ALD4706
QUAD ULTRA MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION ALD4706 quad monolithic CMOS ultra micropower high slew-rate operational amplifier intended broad range analog applications using dual power supply systems, well +12V battery operated systems. device characteristics specified single supply ±2.5V dual supply systems. Total supply current four operational amplifiers 200µA maximum supply voltage. manufactured with Advanced Linear Devices' enhanced ACMOS silicon gate CMOS process. ALD4706 designed offer trade-off performance parameters providing wide range desired specifications. offers popular industry standard configuration LM324 types ICL7641 types. ALD4706 been developed specifically single supply dual supply user. Several important characteristics device make application easier implement these voltages. First, each operational amplifier operate with rail-to-rail input output voltages. This means signal input voltage output voltage equal near positive negative supply voltages. This feature allows numerous analog serial stages flexibility input signal bias levels. Secondly, each device designed accommodate mixed applications where digital analog circuits operate same power supply battery. Thirdly, output stage typically drive 25pF capacitive resistive loads. These features, combined with extremely input currents, high open loop voltage gain 100V/mV, useful bandwidth 200KHz, slew rate 0.17V/µs, power dissipation 0.5mW, offset voltage temperature drift, make ALD4706 versatile, ultra micropower quad operational amplifier. ALD4706, designed fabricated with silicon gate CMOS technology, offers 0.1pA typical input bias current. voltage power operation, reliability operating characteristics, such input bias currents warm time, greatly improved. FEATURES parameters specified single supply 2.5V dual supply systems Rail- rail input output voltage ranges Unity gain stable Extremely input bias currents 0.1pA High source impedance applications Dual power supply ±1.0V ±6.0V Single power supply +12V High voltage gain Output short circuit protected Unity gain bandwidth 0.2MHz Slew rate 0.17V/µs Power dissipation 20µA Symmetrical output drive APPLICATIONS Voltage follower/buffer/amplifier Charge integrator Photodiode amplifier Data acquisition systems High performance portable instruments Signal conditioning circuits Sensor transducer amplifiers leakage amplifiers Active filters Sample/Hold amplifier Picoammeter Current voltage converter
CONFIGURATION
ORDERING INFORMATION
Operating Temperature Range -55°C +125°C +70°C +70°C 14-Pin CERDIP Package ALD4706A ALD4706B ALD4706 14-Pin Small Outline Package (SOIC) ALD4706A ALD4706B ALD4706 14-Pin Plastic Package ALD4706A ALD4706B ALD4706
PACKAGE
Contact factory industrial temperature range
1998 Advanced Linear Devices, Inc. Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ABSOLUTE MAXIMUM RATINGS
Supply voltage, Differential input voltage range Power dissipation Operating temperature range PB,SB package package Storage temperature range Lead temperature, seconds 13.2V -0.3V +0.3V +70°C -55°C +125°C -65°C +150°C +260°C
OPERATING ELECTRICAL CHARACTERISTICS 25°C +5.0V ±2.5V dual supply operation) unless otherwise specified
Parameter Supply Voltage Input Offset Voltage Input Offset Current Input Bias Current Input Voltage Range Input Resistance Input Offset Voltage Drift Power Supply Rejection Ratio Common Mode Rejection Ratio Symbol -0.3 -2.8 ±1.0 4706A ±6.0 12.0 -0.3 -2.8 1013 ±1.0 4706B ±6.0 12.0 -0.3 -2.8 1013 ±1.0 4706 ±6.0 12.0 10.0 11.0 Unit µV/°C 100K 100K +70°C 100K +70°C Test Conditions Dual Supply Single Supply 100K +70°C 25°C +70°C 25°C +70°C ±2.5V
TCVOS PSRR CMRR
Large Signal Voltage Gain
0.01
V/mV V/mV V/mV 0.01 -2.25
100K 100K +70°C 100K ±2.5V +70°C
Output Voltage Range
high high
4.99
0.001 4.999 -2.40 2.40
0.01 -2.25
0.001 4.99 4.999
0.001 4.99 4.999 -2.40 2.40
2.25
2.25
-2.40 -2.25 2.40 2.25
Output Short Circuit Current Supply Current Power Dissipation
Load amplifiers ±2.5V
ALD4706A/ALD4706B ALD4706
Advanced Linear Devices
OPERATING ELECTRICAL CHARACTERISTICS (cont'd) ±2.5V unless otherwise specified
Parameter Input Capacitance Bandwidth Slew Rate Rise time Overshoot Factor Settling Time Channel Separation Symbol 4706A 0.17 4706B 0.17 4706 0.17 Unit V/µs 100K 100K 100K 25pF 0.1% 25pF 100K Test Conditions
10.0
10.0
10.0
±1.0V unless otherwise specified
Parameter Power Supply Rejection Ratio Common Mode Rejection Ratio Large Signal Voltage Gain Output Voltage Range Bandwidth Slew Rate Symbol PSRR 4706A 4706B 4706 Unit Test Conditions
CMRR
high
-0.95 0.95 -.90
-0.95 0.95 -.90
-0.95 0.95 -.90
V/mV V/µs
25pF
±2.5V -55°C +125°C unless otherwise specified
4706A Parameter Input Offset Voltage Input Offset Current Input Bias Current Power Supply Rejection Ratio Common Mode Rejection Ratio Large Signal Voltage Gain Output Voltage Range Symbol PSRR CMRR high 2.25 -2.40 2.40 -2.25 2.25 -2.40 -2.25 2.40 4706B -2.25 4706 15.0 Unit V/mV Test Conditions
-2.40 2.25 2.40
ALD4706A/ALD4706B ALD4706
Advanced Linear Devices
Design Operating Notes:
ALD4706 CMOS operational amplifier uses gain stage architecture improved frequency compensation scheme achieve large voltage gain, high output driving capability, better frequency stability. conventional CMOS operational amplifier design, compensation achieved with pole splitting capacitor together with nulling resistor. This method however, very bias dependent thus cannot accommodate large range supply voltage operation required from stand alone CMOS operational amplifier. ALD4706 internally compensated unity gain stability using novel scheme that does nulling resistor. This scheme produces clean single pole roll gain characteristics while providing more than degrees phase margin unity gain frequency. ALD4706 complementary p-channel n-channel input differential stages connected parallel accomplish rail rail input common mode voltage range. This means that with ranges common mode input voltage close power supplies, differential stages switched internally. maintain compatibility with other operational amplifiers, this switching point been selected about 1.5V below positive supply voltage. Since offset voltage trimming ALD4706 made when input voltage symmetrical supply voltages, this internal switching does affect large variety applications such inverting amplifier non-inverting amplifier with gain larger than operation), where common mode voltage does make excursions above this switching point. user should however, aware that this switching does take place operational amplifier connected unity gain buffer should make provision design allow input offset voltage variations. input bias offset currents essentially input protection diode reverse bias leakage currents, typically less than 0.1pA room temperature. This input bias current assures that analog signal from source will distorted input bias currents. Normally, this extremely high input impedance greater than 1013 would problem source impedance would limit node impedance. However, applications where source impedance very high, necessary limit noise pickup through proper shielding. output stage consists class complementary output drivers, capable driving resistance load. output voltage swing limited drain source on-resistance output transistors determined bias circuitry, value load resistor. When connected voltage follower configuration, oscillation resistant feature, combined with rail rail input output feature, makes effective analog signal buffer medium high source impedance sensors, transducers, other circuit networks. ALD4706 operational amplifier been designed provide full static discharge protection. Internally, design been carefully implemented minimize latch However, care must exercised when handling device avoid strong static fields that degrade diode junction, causing increased input leakage currents. using operational amplifier, user advised power circuit before, simultaneously with, input voltages applied limit input voltages exceed 0.3V power supply voltage levels. ALD4706, with ultra micropower operation, offers numerous benefits reduced power supply requirements, less noise coupling current spikes, less thermally induced drift, better overall reliability lower self heating, lower input bias current. requires practically warm time chip junction heats only 0.1°C above ambient temperature under most operating conditions.
TYPICAL PERFORMANCE CHARACTERISTICS
SUPPLY CURRENT FUNCTION SUPPLY VOLTAGE
1000
INPUTS GROUNDED OUTPUT UNLOADED -55°C +70°C SUPPLY VOLTAGE +125°C +25°C
OPEN LOOP VOLTAGE GAIN FUNCTION LOAD RESISTANCE
SUPPLY CURRENT (µA)
OPEN LOOP VOLTAGE GAIN (V/mV)
-25°C
±2.5V 25°C 100K
LOAD RESISTANCE
COMMON MODE INPUT VOLTAGE RANGE FUNCTION SUPPLY VOLTAGE
INPUT BIAS CURRENT FUNCTION AMBIENT TEMPERATURE
10000
INPUT BIAS CURRENT (pA)
25°C
COMMON MODE INPUT VOLTAGE RANGE
1000
±2.5V
SUPPLY VOLTAGE
AMBIENT TEMPERATURE (°C)
ALD4706A/ALD4706B ALD4706
Advanced Linear Devices
TYPICAL PERFORMANCE CHARACTERISTICS
OPEN LOOP VOLTAGE GAIN FUNCTION SUPPLY VOLTAGE TEMPERATURE
OUTPUT VOLTAGE SWING
1000
OUTPUT VOLTAGE SWING FUNCTION SUPPLY VOLTAGE
±25°C +125°C 100K
OPEN LOOP VOLTAGE GAIN (V/mV)
±55°C +125°C 100K SUPPLY VOLTAGE
SUPPLY VOLTAGE
INPUT OFFSET VOLTAGE FUNCTION AMBIENT TEMPERATURE REPRESENTATIVE UNITS
INPUT OFFSET VOLTAGE (mV)
+100 +125 AMBIENT TEMPERATURE (°C)
OPEN LOOP VOLTAGE GAIN FUNCTION FREQUENCY
100K FREQUENCY (Hz) ±2.5V 25°C
±2.5V
OPEN LOOP VOLTAGE GAIN (dB)
PHASE SHIFT DEGREES
INPUT OFFSET VOLTAGE FUNCTION COMMON MODE INPUT VOLTAGE
INPUT OFFSET VOLTAGE (mV)
±2.5V 25°C
LARGE SIGNAL TRANSIENT RESPONSE
2V/div ±1.0V 25°C 100K 25pF
500mV/div
COMMON MODE INPUT VOLTAGE
10µs/div
LARGE SIGNAL TRANSIENT RESPONSE
5V/div ±2.5V 25°C 100K 25pF
SMALL SIGNAL TRANSIENT RESPONSE
100mV/div ±2.5V 25°C 100K 25pF
2V/div
10µs/div
50mV/div
10µs/div
ALD4706A/ALD4706B ALD4706
Advanced Linear Devices
TYPICAL APPLICATIONS
AMPLIFIER
RLOAD -18mA ILOAD
RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER
1013
0.1µF
ALD4706 RLOAD connected ALD1101
VOUT
ALD4706
RLOAD
PHOTO DETECTOR CURRENT VOLTAGE CONVERTER
PHOTODIODE
ALD1102
+2.5V VOUT
ILOAD RLOAD connected ALD4706
-2.5V
ALD4706
STAGE HIGH GAIN AMPLIFIER
RAIL-TO-RAIL WINDOW COMPARATOR
100K VREF (HIGH) VOUT ALD4706 ALD4706
4706
1.4µF
ALD4706
100K
VREF (LOW)
NOTES: GAIN First Stage
GAIN Second Stage 500Hz Operating Frequency 10KHz
VOUT (LOW) VREF (LOW) VREF (HIGH)
HIGH INPUT IMPEDANCE RAIL-TO-RAIL PRECISION SUMMING AMPLIFIER
+2.5V 2.5V VOUT 0.1µF
Accuracy limited resistor tolerances input offset voltage
ALD4706A/ALD4706B ALD4706
Advanced Linear Devices
ALD4706 VOUT 0.1µF VOUT

QUAD ULTRA MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER GEN

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