Analog-to-digital drive circuitry having built-in time gain compensation functionality for ultrasound applications
First Claim
Patent Images
1. A time gain compensation (TGC) circuit for an ultrasound device, comprising:
- a first amplifier having a first integrating capacitor; and
a control circuit configured to control a gain of the first amplifier by generating a TGC control signal that controls an integration time of the first integrating capacitor, the integration time comprising an amount of time an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier.
2 Assignments
0 Petitions
Accused Products
Abstract
A time gain compensation (TGC) circuit for an ultrasound device includes a first amplifier having an integrating capacitor and a control circuit configured to generate a TGC control signal that controls an integration time of the integrating capacitor, thereby controlling a gain of the first amplifier. The integration time is an amount of time an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier.
68 Citations
31 Claims
-
1. A time gain compensation (TGC) circuit for an ultrasound device, comprising:
-
a first amplifier having a first integrating capacitor; and a control circuit configured to control a gain of the first amplifier by generating a TGC control signal that controls an integration time of the first integrating capacitor, the integration time comprising an amount of time an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An analog-to-digital converter (ADC) driver circuit for an ultrasound device, comprising:
-
a first amplifier having first and second integrating capacitors in a feedback configuration; and a control circuit configured to provide time gain compensation by controlling a gain of the first amplifier by generating a time gain compensation (TGC) control signal that controls an integration time of the first and second integrating capacitors, the integration time comprising an amount of time that an input signal is coupled to the first amplifier before the input signal is isolated from the first amplifier. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An ultrasound system, comprising:
-
a receive channel configured to receive electrical signals from an ultrasonic transducer; and an analog circuit block having an input coupled to the receive channel and an output coupled to an analog-to-digital converter (ADC), the analog circuit block further comprising; an ADC driver circuit including a differential amplifier having first and second integrating capacitors in a feedback configuration; and a control circuit configured to provide time gain compensation by generating a time gain compensation (TGC) control signal that controls an integration time of the first and second integrating capacitors, the integration time comprising an amount of time that an input signal is coupled to the differential amplifier before the input signal is isolated from the differential amplifier. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification