摘要:
Examples are provided for a time-interleaved analog-to-digital converter (ADC) with built-in self-healing. The ADC may include multiple ADC slices. Each ADC slice may be configured to operate in one of a normal or a healing mode of operation. In the normal mode of operation, each ADC slice may convert an input analog signal to a single digital output signal in response to a clock signal associated with the ADC slice. In the healing mode of operation, each ADC slice may be operable to convert the input analog signal to two or more digital output signals in response to two or more clock signals. One or more of the digital output signals may replace one or more output signals of failed ADC slices. A first clock signal may be associated with the ADC slice. A second clock signal may be associated with another ADC slice of the plurality of ADC slices.
摘要:
Examples are provided for a time-interleaved analog-to-digital converter (ADC) with built-in self-healing. The ADC may include multiple ADC slices. Each ADC slice may be configured to operate in one of a normal or a healing mode of operation. In the normal mode of operation, each ADC slice may convert an input analog signal to a single digital output signal in response to a clock signal associated with the ADC slice. In the healing mode of operation, each ADC slice may be operable to convert the input analog signal to two or more digital output signals in response to two or more clock signals. One or more of the digital output signals may replace one or more output signals of failed ADC slices. A first clock signal may be associated with the ADC slice. A second clock signal may be associated with another ADC slice of the plurality of ADC slices.
摘要:
A clock synchronization circuit (fig. 4a) has a clock sync detector (fig. 4a: 182). A first variable delay circuit (fig. 4a: 172) is coupled to a first input (178) of the clock sync detector. A controller (fig. 4a: 184) is coupled to a digital output (208) of the clock sync detector and a control input (fig. 4a: 185) of the first variable delay circuit (fig. 4a: 172). A first clock signal (178) is coupled to the first variable delay circuit (fig. 4a: 172). A second clock signal (179) is coupled to a second input of the clock sync detector (179). The clock sync detector includes a first flip-flop (fig. 4c: 220, 222) and a first delay element (fig. 4c: 224, 226; 234, 236) coupled between the first variable delay circuit (fig. 4a: 172) and a data input of the first flip-flop (fig. 4c: 220). A second variable delay circuit (fig. 4a: 174) is coupled to a second input (179) of the clock sync detector. A multiplexer (190, 192) is coupled between the first variable delay circuit (fig. 4a: 172) and the first input (178) of the clock sync detector. An offset compensation (201) calibrates (signal 202) the clock sync detector.
摘要:
Examples are provided for time-interleaved analog-to-digital conversion with redundancy. The redundancy may include high-order and nested redundancies. An apparatus may include multiple analog-to-digital converter (ADC) blocks coupled to one another to form a time-interleaved ADC. Each ADC block may include multiple ADC slices, wherein a count of the ADC blocks is M and some of the ADC slices may be redundant slices. A clock circuit may be configured to provide multiple clock signals. A portion N of M ADC blocks may be configured to be active, in a normal mode of operation, where N and M are integer numbers and N is smaller than M. A remaining portion of the M ADC blocks may be redundant ADC blocks, one or more of which may be selectively active, in a healing mode of operation, and be swapped for one or more failed ADC blocks using the plurality of clock signals.
摘要:
Examples are provided for time-interleaved analog-to-digital conversion with redundancy. The redundancy may include high-order and nested redundancies. An apparatus may include multiple analog-to-digital converter (ADC) blocks coupled to one another to form a time-interleaved ADC. Each ADC block may include multiple ADC slices, wherein a count of the ADC blocks is M and some of the ADC slices may be redundant slices. A clock circuit may be configured to provide multiple clock signals. A portion N of M ADC blocks may be configured to be active, in a normal mode of operation, where N and M are integer numbers and N is smaller than M. A remaining portion of the M ADC blocks may be redundant ADC blocks, one or more of which may be selectively active, in a healing mode of operation, and be swapped for one or more failed ADC blocks using the plurality of clock signals.