公开(公告)号：US09172393B2

公开(公告)日：2015-10-27

申请号：US14633888

申请日：2015-02-27

Applicant: Broadcom Corporation

Inventor： David Stoops ,  Min Gyu Kim ,  Vinod Jayakumar

IPC: H03M3/00

CPC classification number: H03M3/50 ,  H03M3/502

Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.

Abstract translation: 公开了用于将数字输入信号转换为模拟输出信号的方法，系统和装置。 第一Δ-Σ调制器接收共模参考信号并产生共模控制信号。 数据Δ-Σ调制器接收数字输入信号并产生调制数字输入信号。 洗牌器接收调制数字输入信号和共模控制信号，并产生混洗数字输入信号。 数模转换器（DAC）具有多个三电平单元DAC元件，每个三电平单元DAC元件接收混频数字输入信号的相应部分作为第一输入信号，并接收第二和第三输入信号。 三电平单元DAC元件具有耦合在一起的第一输出产生第一输出信号和耦合在一起的第二输出产生第二输出信号。 运算放大器接收第一和第二输出信号并产生模拟输出信号。

公开(公告)号：US20150171891A1

公开(公告)日：2015-06-18

申请号：US14633888

申请日：2015-02-27

Applicant: Broadcom Corporation

Inventor： David Stoops ,  Min Gyu Kim ,  Vinod Jayakumar

IPC: H03M3/00

CPC classification number: H03M3/50 ,  H03M3/502

Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.

Abstract translation: 公开了用于将数字输入信号转换为模拟输出信号的方法，系统和装置。 第一Δ-Σ调制器接收共模参考信号并产生共模控制信号。 数据Δ-Σ调制器接收数字输入信号并产生调制数字输入信号。 洗牌器接收调制数字输入信号和共模控制信号，并产生混洗数字输入信号。 数模转换器（DAC）具有多个三电平单元DAC元件，每个三电平单元DAC元件接收混频数字输入信号的相应部分作为第一输入信号，并且接收第二和第三输入信号。 三电平单元DAC元件具有耦合在一起的第一输出产生第一输出信号和耦合在一起的第二输出产生第二输出信号。 运算放大器接收第一和第二输出信号并产生模拟输出信号。

公开(公告)号：US08970414B2

公开(公告)日：2015-03-03

申请号：US13931498

申请日：2013-06-28

Applicant: Broadcom Corporation

Inventor： David Stoops ,  Min Gyu Kim ,  Vinod Jayakumar

IPC: H03M3/00

CPC classification number: H03M3/50 ,  H03M3/502

Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.

公开(公告)号：US20140375488A1

公开(公告)日：2014-12-25

申请号：US13931498

申请日：2013-06-28

Applicant: Broadcom Corporation

Inventor： David Stoops ,  Min Gyu Kim ,  Vinod Jayakumar

IPC: H03M3/00

CPC classification number: H03M3/50 ,  H03M3/502

Abstract: Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and generates a common mode control signal. A data delta-sigma modulator receives a digital input signal and generates a modulated digital input signal. A shuffler receives the modulated digital input signal and the common mode control signal and generates a shuffled digital input signal. A digital to analog converter (DAC) has a plurality of tri-level unit DAC elements each receiving a corresponding portion of the shuffled digital input signal as a first input signal, and receiving second and third input signals. The tri-level unit DAC elements have first outputs coupled together generating a first output signal and second outputs coupled together generating a second output signal. An operational amplifier receives the first and second output signals and generates the analog output signal.

Abstract translation: 公开了用于将数字输入信号转换为模拟输出信号的方法，系统和装置。 第一Δ-Σ调制器接收共模参考信号并产生共模控制信号。 数据Δ-Σ调制器接收数字输入信号并产生调制数字输入信号。 洗牌器接收调制数字输入信号和共模控制信号，并产生混洗数字输入信号。 数模转换器（DAC）具有多个三电平单元DAC元件，每个三电平单元DAC元件接收混频数字输入信号的相应部分作为第一输入信号，并且接收第二和第三输入信号。 三电平单元DAC元件具有耦合在一起的第一输出产生第一输出信号和耦合在一起的第二输出产生第二输出信号。 运算放大器接收第一和第二输出信号并产生模拟输出信号。