Cover image for High-resolution IF-to-baseband sigmadelta ADC for car radios
Title:
High-resolution IF-to-baseband sigmadelta ADC for car radios
Personal Author:
Publication Information:
New York : Springer, 2008
Physical Description:
xii, 217 p. : ill. ; 24 cm.
ISBN:
9781402081637

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30000010193015 TK6562.D54 S54 2008 Open Access Book Book
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Summary

Summary

High-Resolution IF-to-Baseband SigmaDelta ADC for Car Radios addresses the theory, system level design and circuit implementation of a high-resolution continuous-time IF-to-baseband quadrature SigmaDelta ADC. The target application of this ADC is in AM/FM/IBOC car radios. The ADC achieves a dynamic range of 118dB, which eliminates the need for an IF VGA or AM channel filter in car radios. The author is very well known within the Analog Circuits community.


Author Notes

Prof. Johan Huijsing is very well known within the Analog Circuits community, and he has (co-)authored and edited numerous books for Springer.


Table of Contents

Prefacep. XI
1 Introductionp. 1
1.1 Motivationp. 1
1.2 Car Radio Historyp. 5
Referencesp. 9
2 DSP Based Radio Receiver Architecturesp. 11
2.1 Radio Receiver Architecturesp. 12
2.1.1 Heterodyne and Homodyne Receiversp. 12
2.1.2 DSP Based Radio Receiver Architecturesp. 14
2.2 ADC Performance Metricsp. 17
2.2.1 Measures of Resolutionp. 17
2.2.2 Measures of Linearityp. 18
2.3 Desensitization and Blockingp. 21
2.4 Image Rejectionp. 24
2.5 Analog Radio Broadcastingp. 29
2.6 Digital Radio Broadcastingp. 30
2.7 Integrated Solutions for AM/FM Receiversp. 32
Referencesp. 37
3 Continuous-Time ¿¿ Modulationp. 41
3.1 Basic Principlesp. 42
3.1.1 Oversamplingp. 43
3.1.2 Noise Shapingp. 46
3.1.3 Anti-alias Filteringp. 48
3.2 High-Order ¿¿ Modulatorsp. 50
3.3 Tonal Behaviourp. 57
3.3.1 DAC Modulation at fs/2p. 59
3.3.2 2nd-Order Non-linearityp. 61
3.4 Clock Jitterp. 65
3.4.1 Random Jitterp. 65
3.4.2 Deterministic Jitterp. 68
Referencesp. 69
4 ¿¿ ADC Topologies for Radio Receiversp. 71
4.1 Lowpass ¿¿ ADCsp. 72
4.1.1 Feedback Compensationp. 73
4.1.2 Feedforward Compensationp. 78
4.1.3 Feedforward and Feedback Compensationp. 81
4.1.4 Feedback Compensation with Local Feedforward Pathp. 84
4.1.5 Resonators and Local Feedbackp. 87
4.2 IF-to-Baseband ¿¿ ADCsp. 90
4.3 Quadrature IF-to-Baseband ¿¿ ADCsp. 93
4.4 Bandpass ¿¿ ADCsp. 102
4.4.1 Continuous-Time Bandpass ¿¿ Modulatorsp. 103
4.4.2 Continuous-Time Resonatorsp. 106
4.5 Quadrature Bandpass ¿¿ ADCsp. 109
4.6 Conclusionsp. 111
Referencesp. 113
5 IF-to-Baseband ¿¿ ADC for AM/FM/IBOC Receiversp. 117
5.1 IF-to-Baseband Conversion Systemp. 118
5.2 IF Mixerp. 124
5.2.1 Mixer Linearityp. 125
5.2.2 Mixer Dynamic Performancep. 126
5.2.3 Isolated Mixer Topologyp. 132
5.2.4 Mixer Driverp. 136
5.3 First Integratorp. 138
5.3.1 Design of the 1st OTA To Be Used as a CT Integratorp. 140
5.3.2 Design of the 1st OTA To Be Used as a SC Integratorp. 143
5.3.3 1st OTA Transistor Level Designp. 149
5.4 High-Order Integrators and Resonatorsp. 152
5.5 Feedforward Coefficients and Quantizerp. 157
5.6 SC Feedback DACp. 159
5.7 Experimental Resultsp. 163
5.7.1 First Prototypep. 164
5.7.2 Second Prototypep. 171
Referencesp. 176
6 Conclusionp. 179
6.1 Benchmarkingp. 179
6.2 Economic Feasibilityp. 181
Referencesp. 183
A Harmonic Distortion in CT Integrators Using Moscapsp. 187
A.1 Introductionp. 187
A.2 Harmonic Distortion in Differential Gm-C Integratorsp. 189
A.3 Harmonic Distortion in Differential Feedback Integratorsp. 192
Referencesp. 195
B Noise Analysis of CT ¿¿ Modulators with SC Feedback DACp. 197
B.1 Introductionp. 197
B.2 Noise Voltage PSD Across a Switched Capacitorp. 199
B.3 Input-Referred Thermal Noise Due to the SC Feedback DAC MOS Switchesp. 201
B3.1 "Direct Noise" Componentsp. 201
B3.2 "Sampled-and-Held" Componentsp. 203
B3.3 Input-Referred Noisep. 204
B.4 Input-Referred Thermal Noise Due to the SC Feedback DAC Reference Voltagep. 205
B.5 Input-Referred Thermal Noise Due to the OpAmpp. 206
B.6 Conclusionp. 208
Referencesp. 208
List of Acronymsp. 209
List of Symbolsp. 211
Indexp. 213
About the Authorsp. 217