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Skaitmeninių teisių valdymas (DRM)
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About the Authors ix
Preface xi
Abstract & Keywords xiii
1 Fundamentals of Analog-to-Digital Data Converters (ADCs) 1
1.1 Performance Parameters for Analog-to-Digital Converters 1
1.2 Algorithms and Architectures for Analog-to-Digital Converters 4
1.2.1 Dual-Slope (Integrating) ADCs 5
1.2.2 Delta-Sigma A/D Converters 6
1.2.3 Successive Approximation A/D Converters 11
1.2.4 Flash A/D Converter 13
1.2.5 Incremental A/D Converter 14
References 15
2 Delta-Sigma ADCs 17
2.1 Sampled-Data?S ADCs 18
2.2 Loop Filter Structures and Circuits for Sampled-Data ?S ADCs 20
2.3 Optimization of Zeros and Poles for Sampled-Data ?S ADCs 22
2.4 Limitations on the Performance of Sampled-Data ?S ADCs 23
2.5 Multistage Sampled-Data ?S ADCs 26
2.6 Continuous-Time ?S ADCs 27
2.7 Advantages and Limitations of Continuous-Time ?S ADCs 31
References 36
3 Single-Stage Incremental Analog-to-Digital Converters 39
3.1 The First-Order IADC 39
3.2 Higher-Order Single-Stage IADCs 42
3.2.1 Analysis and Design of a Second-Order IADC 42
3.2.2 The Design of Higher-Order IADCs 44
3.2.3 IADC Circuit Techniques 46
3.2.4 Comparison of IADCs and ?S ADCs 47
3.3 Decimation Filter and the Overall Design of IADCs 48
3.3.1 Cascade-of-Integrators (CoI) 48
3.3.2 Thermal Noise 48
3.3.3 Optimized Digital Filter Design for a Single-Stage IADC 49
3.3.4 Multiple-Stage IADCs and Extended Counting ADCs 52
3.4 Estimation of Power Consumption 53
3.4.1 Power Consumption for Small Signal Settling 53
3.4.2 Power Consumption for Slewing 55
3.4.3 An Example 56
References 57
4 Multistage and Extended Counting Incremental Analog-to-Digital Converters 59
4.1 Multistage Noise Shaping (MASH) Incremental ADCs 59
4.1.1 The Design of MASH IADCs 59
4.1.2 Trade-Offs in the Design of MASH IADCs 61
4.1.3 Hybrid Schemes for an IADC and a Nyquist-Rate ADC 62
4.1.4 Extended Counting with Hardware Sharing 64
4.2 Design Examples 66
4.2.1 IADC with Two-Capacitor Counting 66
4.2.2 Switched-Capacitor Implementation of the Example IADC 69
4.2.3 Nonideal Effects 72
4.2.4 Measured Performance 73
4.3 The Zoom Incremental ADC 77
4.3.1 Two-Stage 0-L IADCs 77
4.4 Zoom ADC Design Example 79
4.4.1 Nonideal Effects 80
4.4.2 Measured Performance 81
References 83
5 Design Examples 87
5.1 A Third-Order 22-Bit IADC 87
5.2 A 16-Bit Multistep IADC with Single-Opamp Multi-Slope Extended Counting 92
5.3 Multistep IADCs 100
5.3.1 Two-Step IADCs 100
5.3.2 Switched-Capacitor Circuitry 104
5.3.3 Measured Performance 107
5.3.4 A Two-Step Third-Order IADC 108
5.3.5 Conclusion 110
5.4 A Hybrid Continuous-Time Incremental and SAR Two-Step ADC with 90.5 dB Dynamic Range Over 1 MHz Bandwidth 111
5.5 A Multistage Multistep IADC 118
5.5.1 Design of a MASH 2-1 IADC 118
5.5.2 An IADC2-1 Versus a MASH 2-1 ?S ADC 120
5.5.3 Noise Consideration for Higher-Order IADCs 121
5.5.4 The Proposed Multistage Multistep IADC 122
5.5.5 Circuit Implementation 127
5.5.6 Measured Performance 132
5.5.7 Conclusion 137
References 137
Index 143
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