Abstract: A voltage reference source includes a source block, a first resistor having a first terminal coupled to a first terminal of the source block, a reference output for providing a reference voltage, and a first and a second mirror transistor forming a first current mirror. The first mirror transistor couples a second terminal of the source block to a supply voltage terminal and the second mirror transistor couples the reference output to the supply voltage terminal. A series connection of a second resistor and a diode is arranged between the reference output and the first terminal of the first resistor. A mirror current flows through the second mirror transistor and the series connection to the first terminal of the first resistor.

Abstract: In an embodiment a shunt driver circuit has a first and a second connection terminal (N1, N2) forming a two-wire interface (N1, N2), the first connection terminal (N1) being prepared to receive a supply power and to provide an output signal (Sout), the second connection terminal (N2) being connected to a reference potential terminal (10), an Operational Transconductance Amplifier, OTA, (11) comprising a first input coupled to the first connection terminal (N1), a second input for receiving a first reference signal (Sref1) and an output (12) for providing a signal (S12) depending on a difference between an input signal on the first input and the first reference signal (Sref1), a capacitor (C1) coupled between the output (12) and the first input of the OTA (11) via the second connection terminal (N2) in a control loop, and a controlled current source (13) coupled between the output (12) of the OTA (11) and the second connection terminal (N2).

Abstract: A detection circuit has a detection path and a control path. The detection path comprises a signal limiter (1) with a signal input (11), which is connected to a detection node (OUT), and a filter (2) which is coupled to a signal output (12) of the signal limiter (1). The detection path also comprises a short circuit detector (3) with a first and a second detector input (31, 32) and a detector output (33), wherein the first detector input (31) is coupled to the filter (2). The control path comprises a control circuit (4) for controlling a switch (5) which is coupled to the detector output (33) and to the filter (2) by means of a control input (41) and is connected to the switch (5) by means of a control output (42). The switch (5) is coupled to the detection node (OUT) and to a supply node (VSS, VHV).

Abstract: In an embodiment a shunt driver circuit has a first and a second connection terminal (N1, N2) forming a two-wire interface (N1, N2), the first connection terminal (N1) being prepared to receive a supply power and to provide an output signal (Sout), the second connection terminal (N2) being connected to a reference potential terminal (10), an Operational Transconductance Amplifier, OTA, (11) comprising a first input coupled to the first connection terminal (N1), a second input for receiving a first reference signal (Sref1) and an output (12) for providing a signal (S12) depending on a difference between an input signal on the first input and the first reference signal (Sref1), a capacitor (C1) coupled between the output (12) and the first input of the OTA (11) via the second connection terminal (N2) in a control loop, and a controlled current source (13) coupled between the output (12) of the OTA (11) and the second connection terminal (N2).

Abstract: A voltage reference source (10) comprises a source block (21), a first resistor (16) having a first terminal coupled to a first terminal (22) of the source block (21), a reference output (15) for providing a reference voltage (S6), and a first and a second mirror transistor (11, 12) forming a first current mirror (13). The first mirror transistor (11) couples a second terminal (23) of the source block (21) to a supply voltage terminal (14) and the second mirror transistor (12) couples the reference output (15) to the supply voltage terminal (14). A series connection (17) of a second resistor (18) and a diode (19) is arranged between the reference output (15) and the first terminal of the first resistor (16). A mirror current (S3) flows through the second mirror transistor (12) and the series connection (17) to the first terminal of the first resistor (16).

Abstract: An amplifier circuit comprises a measurement path with an amplifier (1) for providing an output voltage (Vout) depending on a measuring current (Ipd) with a first and a second amplifier input (11, 12), and an amplifier output (13). A return path of the amplifier circuit comprises a first filter (2), an auxiliary amplifier (3) and a second filter (4). In this case, the first filter (2) is designed to filter a DC voltage from the output voltage (Vout) and is connected to the amplifier output (13). The auxiliary amplifier (3) serves to convert an input voltage (Vfil) into an output current (Ifil) and has a first and a second auxiliary amplifier input (31, 32) and an auxiliary amplifier output (33). In this case, the first auxiliary amplifier input (31) is connected to the first filter (2). The second filter (4) is designed to filter noise from the output current (Ifil) and couples the auxiliary amplifier output (33) to the first amplifier input (11).

Abstract: A detection circuit has a detection path and a control path. The detection path comprises a signal limiter (1) with a signal input (11), which is connected to a detection node (OUT), and a filter (2) which is coupled to a signal output (12) of the signal limiter (1). The detection path also comprises a short circuit detector (3) with a first and a second detector input (31, 32) and a detector output (33), wherein the first detector input (31) is coupled to the filter (2). The control path comprises a control circuit (4) for controlling a switch (5) which is coupled to the detector output (33) and to the filter (2) by means of a control input (41) and is connected to the switch (5) by means of a control output (42). The switch (5) is coupled to the detection node (OUT) and to a supply node (VSS, VHV).

Abstract: An amplifier circuit comprises a measurement path with an amplifier (1) for providing an output voltage (Vout) depending on a measuring current (Ipd) with a first and a second amplifier input (11, 12), and an amplifier output (13). A return path of the amplifier circuit comprises a first filter (2), an auxiliary amplifier (3) and a second filter (4). In this case, the first filter (2) is designed to filter a DC voltage from the output voltage (Vout) and is connected to the amplifier output (13). The auxiliary amplifier (3) serves to convert an input voltage (Vfil) into an output current (Ifil) and has a first and a second auxiliary amplifier input (31, 32) and an auxiliary amplifier output (33). In this case, the first auxiliary amplifier input (31) is connected to the first filter (2). The second filter (4) is designed to filter noise from the output current (Ifil) and couples the auxiliary amplifier output (33) to the first amplifier input (11).

Abstract: An arrangement and a method for providing a temperature-dependent signal. Several current sources (1, 2) are provided, which are switchably connected to one or more diodes (8). The conducting-state voltage of the diode is compared with a reference signal (Vr) in a comparator (10). A control circuit (12) controls the current sources (1, 2) so that for calibrating in each calibration step, only one of the current sources is activated and, in another calibration step, all of the current sources (1, 2) are activated. Therefore, error terms can be calculated, which allow a very exact provision of a temperature-dependent signal with respect to the matching of the current sources to each other.

Abstract: A circuit arrangement for shifting a voltage level comprises a data-current converter (2) that is connected to a first connection (K1) and that has an input for feeding a digital input data signal (DIN), a first output for providing a current (I), and also a second output for providing a reference current (I1), and a current-data converter (3) that is connected to a second connection (K2) and that has a first input for feeding the current (I), a second input for feeding the reference current (I1), and also an output for providing a digital output data signal (DOUT). Here, a voltage level of the digital output data signal (DOUT) is different from a voltage level of the digital input data signal (DIN). In addition, a method for shifting a voltage level is provided.

Abstract: A circuit arrangement for shifting a voltage level comprises a data-current converter (2) that is connected to a first connection (K1) and that has an input for feeding a digital input data signal (DIN), a first output for providing a current (I), and also a second output for providing a reference current (I1), and a current-data converter (3) that is connected to a second connection (K2) and that has a first input for feeding the current (I), a second input for feeding the reference current (I1), and also an output for providing a digital output data signal (DOUT). Here, a voltage level of the digital output data signal (DOUT) is different from a voltage level of the digital input data signal (DIN). In addition, a method for shifting a voltage level is provided.

Abstract: A phase-locked loop for controlling an electromechanical component comprises a digitally controlled oscillator (10), a phase comparator (20), and a digital loop filter (30). The digitally controlled oscillator (10) has an output (11), at which an oscillator signal (SOSC) can be picked up and which can be coupled to a first terminal (51) of the electromechanical component (50). The phase comparator (20) comprises a first input (21), which is coupled to the output (11) of the digitally controlled oscillator (10), and a second input (22), which can be coupled to the first terminal (51) or to a second terminal (52) of the electromechanical component (50) for feeding a current signal (S3). The digital loop filter (30) is connected between the phase comparator (20) and the digitally controlled oscillator (10).

Abstract: An arrangement and a method for providing a temperature-dependent signal. Several current sources (1, 2) are provided, which are switchably connected to one or more diodes (8). The conducting-state voltage of the diode is compared with a reference signal (Vr) in a comparator (10). A control circuit (12) controls the current sources (1, 2) so that for calibrating in each calibration step, only one of the current sources is activated and, in another calibration step, all of the current sources (1, 2) are activated. Therefore, error terms can be calculated, which allow a very exact provision of a temperature-dependent signal with respect to the matching of the current sources to each other.

Abstract: A flameless candle that releases a volatile active includes at least one LED positioned in a tip (106), a cartridge mount (128), and a support structure (102, 141). The at least one LED emits a flickering light that emulates a flame of a candle. The cartridge mount (128) receives and secures a replaceable cartridge (104a) containing a volatile active to be released into the atmosphere over time. The support structure (120, 141) supports the at least one LED and the cartridge mount (128). The support structure (120, 141) is configured to allow airflow across the replaceable cartridge (104a) when the replaceable cartridge (104a) is mounted in the cartridge mount (128).

Abstract: A phase-locked loop for controlling an electromechanical component comprises a digitally controlled oscillator (10), a phase comparator (20), and a digital loop filter (30). The digitally controlled oscillator (10) has an output (11), at which an oscillator signal (SOSC) can be picked up and which can be coupled to a first terminal (51) of the electromechanical component (50). The phase comparator (20) comprises a first input (21), which is coupled to the output (11) of the digitally controlled oscillator (10), and a second input (22), which can be coupled to the first terminal (51) or to a second terminal (52) of the electromechanical component (50) for feeding a current signal (S3). The digital loop filter (30) is connected between the phase comparator (20) and the digitally controlled oscillator (10).

Abstract: An active material cartridge comprises a frame and an active material refill. The active material refill comprises at least one reservoir having an active material therein and a protrusion extending from a first end thereof. The active material refill is disposed on and attached to the frame.

Abstract: A control for a multisensory apparatus comprises means for detecting a number of lights connected to the control. The control further includes means responsive to the detecting means for operating the light(s) connected to the control in either of first and second different modes of operation in dependence upon the detected number of lights connected thereto. Still further, the control includes means for actuating an active material dispenser.

Abstract: An active material cartridge comprises a frame and an active material refill. The active material refill comprises at least one reservoir having an active material therein and a protrusion extending from a first end thereof. The active material refill is disposed on and attached to the frame.

Abstract: A flameless candle that releases a volatile active includes at least one LED positioned in a tip (106), a cartridge mount (128), and a support structure (102, 141). The at least one LED emits a flickering light that emulates a flame of a candle. The cartridge mount (128) receives and secures a replaceable cartridge (104a) containing a volatile active to be released into the atmosphere over time. The support structure (120, 141) supports the at least one LED and the cartridge mount (128). The support structure (120, 141) is configured to allow airflow across the replaceable cartridge (104a) when the replaceable cartridge (104a) is mounted in the cartridge mount (128).