CS3001_09 Datasheet, PDF (2/16 Pages) Cirrus Logic – Precision Low-voltage Amplifier; DC to 2 kHz

CS3001
CS3002
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS .............................................. 3
ELECTRICAL CHARACTERISTICS...................................................................3
ABSOLUTE MAXIMUM RATINGS .....................................................................4
2. TYPICAL PERFORMANCE PLOTS .............................................................. 4
3. CS3001/CS3002 OVERVIEW ......................................................................... 8
3.1 Open-loop Gain and Phase Response .................................................................8
3.2 Open-loop Gain and Stability Compensation .......................................................9
3.2.1 Discussion ...................................................................................................9
3.2.2 Gain Calculations Summary and Recommendations ...............................12
3.3 Powerdown (PDWN) ..........................................................................................12
3.4 Applications ........................................................................................................12
4. PACKAGE DRAWING .................................................................................. 14
5. ORDERING INFORMATION ........................................................................ 15
6. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION .. 15
7. REVISION HISTORY ................................................................................... 16
LIST OF FIGURES
Figure 1. Noise vs. Frequency (Measured) ........................................................................4
Figure 2. 0.01 Hz to 10 Hz Noise .......................................................................................4
Figure 3. Supply Current vs. Temperature, 3001 ...............................................................4
Figure 4. Noise vs. Frequency ...........................................................................................4
Figure 5. Offset Voltage Stability (DC to 3.2 Hz) ...............................................................4
Figure 6. Supply Current vs. Temperature, 3002 ...............................................................4
Figure 7. Supply Current vs. Voltage, 3001 .......................................................................5
Figure 8. Supply Current vs. Voltage, 3002 .......................................................................5
Figure 9. Open-loop Gain and Phase vs. Frequency .........................................................5
Figure 10. Open-loop Gain and Phase vs. Frequency (Expanded) ...................................6
Figure 11. Input Bias Current vs. Supply Voltage (CS3002) ..............................................6
Figure 12. Input Bias Current vs. Common Mode Voltage ................................................7
Figure 13. Voltage Swing vs. Output Current (2.7 V) .........................................................7
Figure 14. Voltage Swing vs. Output Current (5 V) ............................................................7
Figure 15. CS3001/CS3002 Open-loop Gain and Phase Response .................................8
Figure 16. Non-inverting Gain Configuration .....................................................................9
Figure 17. Non-inverting Gain Configuration with Compensation ....................................10
Figure 18. Loop Gain Plot: Unity Gain and with Pole-zero Compensation ......................11
Figure 19. Thermopile Amplifier with a Gain of 650 V/V ..................................................13
Figure 20. Load Cell Bridge Amplifier and A/D Converter ...............................................13
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DS490F9