CS3011_07 Datasheet, PDF (2/18 Pages) Cirrus Logic – Precision Low-voltage Amplifier; DC to 1 kHz

CS3011
CS3012
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS .................................................... 3
2. TYPICAL PERFORMANCE PLOTS ..................................................................... 4
3. CS3011/CS3012 OVERVIEW ............................................................................... 8
3.1 Open Loop Gain and Phase Response ......................................................................9
3.2 Open Loop Gain and Stability Compensation ...........................................................10
3.2.1 Discussion ................................................................................................10
3.2.2 Gain Calculations Summary and Recommendations ...............................13
3.3 Powerdown (PDWN) .................................................................................................13
3.4 Applications ..............................................................................................................14
4. ORDERING INFORMATION .............................................................................. 15
5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ........ 15
6. PACKAGE DRAWING ........................................................................................ 16
7. REVISION HISTORY ......................................................................................... 17
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, 3011 ....................................................... 4
Figure 4. Noise vs. Frequency ................................................................................... 4
Figure 5. Offset Voltage Stability (DC to 3.2 Hz) ........................................................ 4
Figure 6. Supply Current vs. Temperature, 3012 ....................................................... 4
Figure 7. Supply Current vs. Voltage, 3011 ............................................................... 5
Figure 8. Supply Current vs. Voltage, 3012 ............................................................... 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 Common Mode Voltage (CS3012) ......................... 6
Figure 12. Voltage Swing vs. Output Current (2.7 V) ................................................. 7
Figure 13. Voltage Swing vs. Output Current (5 V) .................................................... 7
Figure 14. CS3011/CS3012 Open Loop Gain and Phase Response ........................ 9
Figure 15. Non-Inverting Gain Configuration ........................................................... 10
Figure 16. Non-Inverting Gain Configuration with Compensation ............................ 11
Figure 17. Loop Gain Plot: Unity Gain and with Pole-Zero Compensation .............. 12
Figure 18. Thermopile Amplifier with a Gain of 650 V/V .......................................... 14
Figure 19. Load Cell Bridge Amplifier and A/D Converter ........................................ 14
Figure 20.
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DS597F5