LS204 STMicroelectronics, LS204 Datasheet

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LS204

Manufacturer Part Number
LS204
Description
Low-noise bipolar op-amps
Manufacturer
STMicroelectronics
Datasheet

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Features
Description
The LS204 is a high performance dual operational
amplifier with frequency and phase compensation
built into the chip. The internal phase
compensation allows stable operation as voltage
follower in spite of its high gain-bandwidth
product.
The circuit presents very stable electrical
characteristics over the entire supply voltage
range, and is particularly intended for professional
and telecom applications (such as active filtering).
June 2008
Low power consumption
Short-circuit protection
Low distortion, low noise
High gain-bandwidth product
High channel separation
High performance dual operational amplifier
Rev 2
Non-inverting input 1
Inverting input 1
Output 1
V
CC
(Plastic micro package)
-
1
2
3
4
Pin connections
(Plastic package)
+
-
(top view)
SO-8
DIP8
N
D
+
-
8
7
6
5
V CC
Output 2
Inverting input 2
Non-inverting input 2
LS204
+
www.st.com
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LS204 Summary of contents

Page 1

... Low distortion, low noise ■ High gain-bandwidth product ■ High channel separation Description The LS204 is a high performance dual operational amplifier with frequency and phase compensation built into the chip. The internal phase compensation allows stable operation as voltage follower in spite of its high gain-bandwidth product. ...

Page 2

... Circuit schematics 1 Circuit schematics Figure 1. Schematic diagram (1/2 LS204) 2/16 LS204 ...

Page 3

... Absolute maximum ratings and operating conditions Parameter (3) (4) (4) (5) (6) (7) ( and Parameter Value Unit ±18 V ± ±(V - °C/W 125 85 °C Infinite 150 °C -65 to +150 ° 200 V 1.5 kV LS204C LS204I Unit +1 -1 +70 -40 to +105 °C 3/16 ...

Page 4

... LS204 Unit 1.5 mA 300 nA 700 M 3 µV/° 100 nA/° MHz nV ----------- - V/µ ...

Page 5

... LS204 Figure 2. Supply current versus supply voltage Figure 4. Output short circuit current versus ambient temperature Figure 6. Output loop gain versus ambient temperature Electrical characteristics Figure 3. Supply current versus ambient temperature Figure 5. Open loop frequency and phase response Figure 7. Supply voltage rejection versus ...

Page 6

... Electrical characteristics Figure 8. Large signal frequency response Figure 10. Total input noise versus frequency Figure 11. Amplitude response Figure 12. Amplitude response ( ±1dB ripple) 6/16 Figure 9. Output voltage swing versus load resistance LS204 ...

Page 7

... LS204 4 Application information for active low-pass filters 4.1 Butterworth The Butterworth is a "maximally flat" amplitude response filter Butterworth filters are used for filtering signals in data acquisition systems to prevent aliasing errors in samples-data applications and for general purpose low-pass filtering. The cut-off frequency, Fc, is the frequency at which the amplitude response is down 3 dB. ...

Page 8

... Peak overshoot Number of poles % Overshoot 0.4 4 0.8 6 0 Figure 13): LS204 Settling time (% of final value) ±1% ±0.1% ±0.01% 1.1Fc sec. 1.7Fc sec. 1.9Fc sec 1.7/ 2.8/ 3. 2.4/ 3.9S/ 5.0S 3.1/ 5.1/ 7. 0.8/ 1.4/ 1. 1.0/ 1.8/ 2.4/ ...

Page 9

... LS204 Figure 13. Filter configuration R1 Vin Three parameters are needed to characterize the frequency and phase response of a 2nd order active filter: ● the gain (Gv), ● the damping factor ( ) or the Q factor ( )1), ● the cut-off frequency (Fc). The higher order response is obtained with a series of 2nd order sections. A simple RC section is introduced when an odd filter is required ...

Page 10

... C1 14, for Fc = 3.4 kHz and kW, we obtain: 1 ----------- - = 6.33nF ----------- - = 1.97nF ----------- - = 8.20nF ----------- - = 1.45nF ----------- - = 15.14nF 2 fc Table 7 and Figure 15 1 ----------- - = 25. ----------- - = 75. ----------- - = 18. ----------- - = 103k ----------- - = 9. used to design high-pass filters LS204 Table 7. ...

Page 11

... LS204 Table 7. Damping factor for low-pass Butterworth filters Order 1.392 4 5 1.354 6 7 1.336 8 Application information for active low-pass filters 0.707 1.41 0.202 3.54 0.92 1.08 0.38 2.61 0.421 1.75 0.309 3.235 0.966 1.035 0.707 1.414 0.488 1.53 0.623 1.604 0.98 1.02 0.83 1. 0.259 3.86 0.222 4.49 0.556 1.80 0.195 C8 5.125 ...

Page 12

... JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. 12/16 LS204 ...

Page 13

... LS204 5.1 DIP8 package information Figure 16. DIP8 package mechanical drawing Table 8. DIP8 package mechanical data Ref Dimensions Millimeters Min. Typ. Max. 5.33 0.38 2.92 3.30 4.95 0.36 0.46 0.56 1.14 1.52 1.78 0.20 0.25 0.36 9.02 9.27 10.16 7.62 7.87 8.26 6.10 6.35 7.11 2.54 7.62 10.92 2.92 3.30 3.81 Package information Inches Min. Typ. Max. 0.210 0.015 0.115 0.130 0.195 0.014 0.018 0.022 0.045 ...

Page 14

... ccc 14/16 Dimensions Millimeters Min. Typ. Max. 1.75 0.10 0.25 1.25 0.28 0.48 0.17 0.23 4.80 4.90 5.00 5.80 6.00 6.20 3.80 3.90 4.00 1.27 0.25 0.50 0.40 1.27 1° 8° 0.10 LS204 Inches Min. Typ. Max. 0.069 0.004 0.010 0.049 0.011 0.019 0.007 0.010 0.189 0.193 0.197 0.228 0.236 0.244 0.150 0.154 0.157 0.050 0.010 0.020 0.016 0.050 1° 8° 0.004 ...

Page 15

... Ordering information Table 10. Order codes Order code LS204CN LS204CD LS204CDT LS204IN LS204ID LS204IDT (1) LS204IYD (1) LS204IYDT 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going. 7 Revision history Table 11. Document revision history Date 29-Nov-2001 ...

Page 16

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com LS204 ...

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