HIGH PERFORMANCE DUAL OPERATIONAL AMPLIFIER POWER CONSUMPTION SHO

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HIGH PERFORMANCE DUAL OPERATIONAL AMPLIFIER POWER CONSUMPTION SHO

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LS204
HIGH PERFORMANCE DUAL OPERATIONAL AMPLIFIER
POWER CONSUMPTION SHORT CIRCUIT PROTECTION DISTORTION, NOISE HIGH GAIN-BANDWIDTH PRODUCT HIGH CHANNEL SEPARATION
DIP8 (Plastic Package)
DESCRIPTION LS204 high performance dual operational amplifier with frequency phase compensation built into chip. internal phase compensation allows stable operation voltage follower spite high Gain-Bandwidth Product. circuit presents very stable electrical characteristics over entire supply voltage range, particularly intended professional telecom applications (active filter, etc).
(Plastic Micropackage)
CONNECTIONS (top view)
ORDER CODE
Output
VCC+
Package Part Number Temperature Range LS204C 0°C, +70°C LS204I -40°C, +105°C Example LS204CN
Inverting input Non-inverting input
Output Inverting input Non-inverting input
Dual Line Package (DIP) Small Outline Package (SO) also available Tape Reel (DT)
November 2001
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LS204
SCHEMATIC DIAGRAM (1/2 LS204)
ABSOLUTE MAXIMUM RATINGS
Symbol Toper Ptot Tstg
Parameter Supply voltage Input Voltage Differential Input Voltage Operating Temperature Range Power Dissipation Tamb 70°C Junction Temperature Storage Temperature Range LS204C LS204I
Value ±VCC ±(VCC +105 +150
Unit
Power dissipation must considered ensure maximum junction temperature (Tj) exceeded.
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LS204
ELECTRICAL CHARACTERISTICS ±15V, 25°C (unless otherwise specified)
LS204I Symbol Parameter Min. Supply Current Input Bias Current Tamb 25°C Tmin Tmax Input Resistance 1kHz) Input Offset Voltage 10k) Tamb 25°C Tmin Tmax Input Offset Voltage Drift 10k) Tmin Tmax Input Offset Current Tmin Tmax Input Offset Current Drift Tmin Tmax Output Short-circuit Current Large Signal Voltage Gain Tmin Tmax ±15V Gain Bandwith Product =100kHz) Equivalent Input Noise Voltage 1kHz, Total Harmonic Distortion 1kHz, 20dB, 2Vpp) Output Voltage Swing ±15V Typ. Max. Min. Typ. Max. LS204C Unit
DVio DIio
µV/°C nA/°C
0.08
0.03
0.03
±Vopp Vopp
Large Signal Voltage Swing 10k, 10kHz Slew Rate unity gain) Supply Voltage Rejection Ratio Tmin Tmax Common Mode Rejection Ratio ±10V Tmin Tmax
V/µs
Vo1/Vo2 Channel Separation 1kHz)
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LS204
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LS204
APPLICATION INFORMATION: Active low-pass filter BUTTERWORTH Butterworth "maximally flat" amplitude response filter (figure Butterworth filters used filtering signals data acquisition systems prevent aliasing errors samples-data applications general purpose low-pass filtering. cut-off frequency frequency which amplitude response down 3dB. attenuation rate beyond cutoff frequency octave frequency where order (number poles) filter. Other characteristics Flattest possible amplitude response Excellent gain accuracy frequency passband BESSEL Bessel type "linear phase" filter. Because their linear phase characteristics, these filters approximate constant time delay over limited frequency range. Bessel filters pass transient waveforms with minimum distortion. They also used provide time delays pass filtering modulated waveforms "running average" type filter. maximum phase shift radians where order (number poles) filter. cut-off frequency defined frequency which phase shift half this value. input.
Number Poles Peak Overshoot Overshoot Butterworth Settling Time final value) 1.1Fc sec. 1.7/fc 2.4/fc 3.1/fc 0.8/fc 1.0/fc 1.3/fc 1.6/fc 1.1/fc 3.0/fc 5.9/fc 8.4/fc 1.6/fc 4.8/fc 8.2/fc 11.6/fc ±0.1% 1.7Fc sec. 2.8/fc 3.9S/fc 5.1/fc 1.4/fc 1.8/fc 2.1/fc 2.3/fc 1.6/fc 5.4/fc 10.4/fc 16.4/fc 2.7/fc 8.4/fc 16.3/fc 24.8/fc ±0.01% 1.9Fc sec. 3.8/fc 5.0S/fc 7.1/fc 1.7/fc 2.4/fc 2.7/fc 3.2/fc
accurate delay, cut-off frequency should twice maximum signal frequency. following table used obtain -3dB frequency filter.
Pole -3dB Frequency 0.77fc Pole 0.67fc Pole 0.57fc Pole 0.50fc
Other characteristics Selectivity great Chebyschev Butterworth Very little overshoot response step inputs Fast rise time CHEBYSCHEV Chebyschev filters have greater selectivity than either Bessel Butterworth expense ripple passband (figure 11). Chebyschev filters normally designed with peak-to-peak ripple values from 0.2dB 2dB. Increased ripple passband allows increased attenuation above cut-off frequency. cut-off frequency defined frequency which amplitude response passes through specificed maximum ripple band enters stop band. Other characteristics Greater selectivity Very non-linear phase response High overshoot response step inputs
table below shows typical overshoot setting time response pass filters step
Bessel
Chebyschev (ripple ±0.25dB)
Chebyschev (ripple ±1dB)
Design order active pass filter (Sallen configuration unity gain op-amp)
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LS204
Fixed have (see figure Figure Filter Configuration
Vout
Three parameters needed characterize frequency phase response order active filter: gain (Gv), damping factio factor )1), cuttoff frequency (fc). Table
Filter Response Bessel
higher order response obtained with series order sections. simple section introduced when filter required. choice factor) determines filter response (see table
Cuttoff Frequency Frequency which Phase Shift -90°C
Butterworth
Frequency which -3dB
Chebyschev
Frequency which amplitude response passes through specified max. ripple band enters stop bank.
EXAMPLE Figure Order Low-pass Filter (Butterworth) with Unity Gain configuration
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LS204
circuit figure 3.4kHz 10k, obtain: 1.354 6.33nF 0.421 1.97nF 1.753 8.20nF 0.309 1.45nF 3.325 15.14nF attenuation filter 30dB 6.8kHz better than 60dB 15kHz. Table Damping Factor Low-pass Butterworth Filters
Order 1.336 1.354 1.392 0.707 0.202 0.92 0.421 0.966 0.488 0.98 1.41 3.54 1.08 1.75 1.035 1.53 1.02 0.38 0.309 0.707 0.623 0.83 2.61 3.235 1.414 1.604 1.20 0.259 0.222 0.556 3.86 4.49 1.80 0.195 5.125
same method, referring table figure used design high-pass filter. this case damping factor found taking reciprocal numbers table 5kHz obtain: 25.5k 0.354 75.6k 0.421 18.2k 1.753 103k 0.309 9.6k 3.325
Figure Order High-pass Filter (Butterworth) with Unity Gain configuration
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LS204
PACKAGE MECHANICAL DATA PINS PLASTIC PACKAGE
Millimeters Dimensions Min. 0.51 1.15 0.356 0.204 7.95 2.54 7.62 7.62 5.08 3.81 1.52 Typ. 3.32 1.65 0.55 0.304 10.92 9.75 0.020 0.045 0.014 0.008 0.313 Max. Min.
Inches Typ. 0.131 0.065 0.022 0.012 0.430 0.384 0.100 0.300 0.300 0260 0.200 0.150 0.060 Max.
3.18
0.125
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LS204
PACKAGE MECHANICAL DATA PINS PLASTIC MICROPACKAGE (SO)
Millimeters Dimensions Min. 0.65 0.35 0.19 0.25 1.27 3.81 1.27 (max.) 0.150 0.016 Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 (typ.) 0.189 0.228 Min. 0.004 0.026 0.014 0.007 0.010
Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.050 0.150 0.157 0.050 0.024
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. STMicroelectronics products authorized critical components life support devices systems without express written approval STMicroelectronics. logo registered trademark STMicroelectronics 2001 STMicroelectronics Printed Italy Rights Reserved STMicroelectronics GROUP COMPANIES Australia Brazil Canada China Finland France Germany Hong Kong India Israel Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Switzerland United Kingdom United States http://www.st.com
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HIGH PERFORMANCE DUAL OPERATIONAL AMPLIFIER POWER CONSUMPTION SHO

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