Searched +full:low +full:- +full:noise (Results 1 – 25 of 54) sorted by relevance
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| /Documentation/ABI/testing/ |
| D | sysfs-bus-iio-adc-mcp3564 | 3 Contact: linux-iio@vger.kernel.org
6 circuit of the Delta-Sigma modulator. The different BOOST
12 Contact: linux-iio@vger.kernel.org
15 the current biasing circuit of the Delta-Sigma modulator.
19 Contact: linux-iio@vger.kernel.org
22 auto-zeroing algorithm (the input multiplexer and the ADC
26 input as VIN+/VIN-, one with VIN+/VIN- inverted. In this case the
30 ultra-low offset without any digital calibration. The resulting
32 conversions, which is on the order of magnitude of the noise
34 so the residual offset error temperature drift is extremely low.
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| D | sysfs-bus-iio-adc-ad4130 | 1 What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available
3 Contact: linux-iio@vger.kernel.org
7 * "sinc4" - Sinc 4. Excellent noise performance. Long
10 * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion
13 * "sinc3" - Sinc3. Moderate 1st conversion time.
14 Good noise performance.
16 * "sinc3+rej60" - Sinc3 + 60Hz rejection. At a sampling
20 * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion
24 * "sinc3+pf1" - Sinc3 + Post Filter 1. 53dB rejection @
27 * "sinc3+pf2" - Sinc3 + Post Filter 2. 70dB rejection @
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| D | sysfs-bus-counter | 3 Contact: linux-iio@vger.kernel.org
11 Contact: linux-iio@vger.kernel.org
16 MTCLKA-MTCLKB:
20 MTCLKC-MTCLKD:
26 Contact: linux-iio@vger.kernel.org
33 Contact: linux-iio@vger.kernel.org
39 Contact: linux-iio@vger.kernel.org
45 Contact: linux-iio@vger.kernel.org
52 Contact: linux-iio@vger.kernel.org
59 Contact: linux-iio@vger.kernel.org
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| /Documentation/userspace-api/media/dvb/ |
| D | frontend.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 - Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H,
16 - Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B)
18 - Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS
20 The Digital TV frontend controls several sub-devices including:
22 - Tuner
24 - Digital TV demodulator
26 - Low noise amplifier (LNA)
28 - Satellite Equipment Control (SEC) [#f1]_.
36 Transmission via the internet (DVB-IP) and MMT (MPEG Media Transport)
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| /Documentation/devicetree/bindings/iio/accel/ |
| D | adi,adxl355.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices ADXL355 and ADXL359 3-Axis, Low noise MEMS Accelerometers
10 - Puranjay Mohan <puranjay12@gmail.com>
13 Analog Devices ADXL355 and ADXL359 3-Axis, Low noise MEMS Accelerometers that
21 - adi,adxl355
22 - adi,adxl359
34 interrupt-names:
38 - INT1
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| D | adi,adxl380.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices ADXL380/382 3-Axis Digital Accelerometer
10 - Ramona Gradinariu <ramona.gradinariu@analog.com>
11 - Antoniu Miclaus <antoniu.miclaus@analog.com>
14 The ADXL380/ADXL382 is a low noise density, low power, 3-axis
24 - adi,adxl380
25 - adi,adxl382
34 interrupt-names:
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| /Documentation/devicetree/bindings/input/touchscreen/ |
| D | tsc2007.txt | 4 - compatible: must be "ti,tsc2007".
5 - reg: I2C address of the chip.
6 - ti,x-plate-ohms: X-plate resistance in ohms.
9 - gpios: the interrupt gpio the chip is connected to (through the penirq pin).
10 The penirq pin goes to low when the panel is touched.
12 - interrupts: (gpio) interrupt to which the chip is connected
14 - ti,max-rt: maximum pressure.
15 - ti,fuzzx: specifies the absolute input fuzz x value.
16 If set, it will permit noise in the data up to +- the value given to the fuzz
17 parameter, that is used to filter noise from the event stream.
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| /Documentation/input/devices/ |
| D | cma3000_d0x.rst | 1 CMA3000-D0x Accelerometer
5 * VTI CMA3000-D0x
8 CMA3000-D0X Product Family Specification 8281000A.02.pdf
15 -----------
17 CMA3000 Tri-axis accelerometer supports Motion detect, Measurement and
21 Its the low power mode where interrupts are generated only
47 -------------
50 Noise on X Axis
53 Noise on Y Axis
56 Noise on Z Axis
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| /Documentation/devicetree/bindings/gnss/ |
| D | gnss-common.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gnss/gnss-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Johan Hovold <johan@kernel.org>
21 lna-supply:
22 description: A separate regulator supplying power for the Low Noise
26 enable-gpios:
28 asserted. If this line is active low, the GPIO phandle should
33 timepulse-gpios:
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| /Documentation/devicetree/bindings/iio/frequency/ |
| D | adi,admv1014.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
21 - adi,admv1014
26 spi-max-frequency:
32 clock-names:
34 - const: lo_in
38 vcm-supply:
40 Common-mode voltage regulator.
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| D | adi,adf4350.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
15 - adi,adf4350
16 - adi,adf4351
21 spi-max-frequency:
28 clock-names:
31 '#clock-cells':
34 clock-output-names:
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| /Documentation/devicetree/bindings/iio/adc/ |
| D | lltc,ltc2497.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
11 - Liam Beguin <liambeguin@gmail.com>
15 low noise, low power, 8-channel, 12-bit successive approximation ADC with an
18 https://www.analog.com/media/en/technical-documentation/data-sheets/2309fd.pdf
25 https://www.analog.com/media/en/technical-documentation/data-sheets/2497fb.pdf
26 https://www.analog.com/media/en/technical-documentation/data-sheets/2499fe.pdf
31 - lltc,ltc2309
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| D | microchip,mcp3564.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marius Cristea <marius.cristea@microchip.com>
13 Bindings for the Microchip family of 153.6 ksps, Low-Noise 16/24-Bit
14 Delta-Sigma ADCs with an SPI interface. Datasheet can be found here:
16 …s/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP3561-2-4-Family-Data-Sheet-DS20006181…
18 …ds/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3561_2_4R-Data-Sheet-DS200006391C.pdf
20 …ProductDocuments/DataSheets/MCP3461-2-4-Two-Four-Eight-Channel-153.6-ksps-Low-Noise-16-Bit-Delta-S…
22 …/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP3461-2-4R-Family-Data-Sheet-DS20006404…
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| D | maxim,max34408.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ivan Mikhaylov <fr0st61te@gmail.com>
13 The MAX34408/MAX34409 are two- and four-channel current monitors that are
15 unidirectional current sensor offers precision high-side operation with a
16 low full-scale sense voltage. The devices automatically sequence through
17 two or four channels and collect the current-sense samples and average them
18 to reduce the effect of impulse noise. The raw ADC samples are compared to
19 user-programmable digital thresholds to indicate overcurrent conditions.
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| /Documentation/devicetree/bindings/sound/ |
| D | awinic,aw87390.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Weidong Wang <wangweidong.a@awinic.com>
15 sound quallity, which is a new high efficiency, low
16 noise, constant large volume, 6th Smart K audio amplifier.
19 - $ref: dai-common.yaml#
28 "#sound-dai-cells":
31 awinic,audio-channel:
40 - compatible
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| D | richtek,rtq9128.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RTQ9128 is a ultra-low output noise, high-efficiency, four-channel
14 class-D audio power amplifier and delivering 4x75W into 4OHm at 10%
18 - $ref: dai-common.yaml#
23 - richtek,rtq9128
28 enable-gpios:
31 richtek,tdm-input-data2-select:
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| D | st,sta350.txt | 7 - compatible: "st,sta350"
8 - reg: the I2C address of the device for I2C
9 - reset-gpios: a GPIO spec for the reset pin. If specified, it will be
12 - power-down-gpios: a GPIO spec for the power down pin. If specified,
16 - vdd-dig-supply: regulator spec, providing 3.3V
17 - vdd-pll-supply: regulator spec, providing 3.3V
18 - vcc-supply: regulator spec, providing 5V - 26V
22 - st,output-conf: number, Selects the output configuration:
23 0: 2-channel (full-bridge) power, 2-channel data-out
24 1: 2 (half-bridge). 1 (full-bridge) on-board power
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| /Documentation/devicetree/bindings/regulator/ |
| D | renesas,raa215300.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Biju Das <biju.das.jz@bp.renesas.com>
13 The RAA215300 is a high-performance, low-cost 9-channel PMIC designed for
14 32-bit and 64-bit MCU and MPU applications. It supports DDR3, DDR3L, DDR4,
16 built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin cell
18 ideal for System-On-Module (SOM) applications. A spread spectrum feature
19 provides an ease-of-use solution for noise-sensitive audio or RF applications.
25 …-power-management/multi-channel-power-management-ics-pmics/ssdsoc-power-management-ics-pmic-and-pm…
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| /Documentation/sound/hd-audio/ |
| D | realtek-pc-beep.rst | 20 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
24 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
41 Loopback 1Ah to 21h [active low] (h): 1 bit
58 +--DIV--+--!DIV--+ {1Ah boost control}
60 +--(b == 0)--+--(b != 0)--+
70 +-----!h-----+-----S-----+
79 All Realtek HDA codecs have a vendor-defined widget with node ID 20h which
107 poorly shielded and picks up chassis noise (both of which are the case on my
118 causes terrible headphone noise, the character of which is controlled by the
120 noise by changing "Headphone Mic Boost" in ALSA, now you know why.)
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| /Documentation/admin-guide/media/ |
| D | ipu3.rst | 1 .. SPDX-License-Identifier: GPL-2.0
24 ImgU). The CIO2 driver is available as drivers/media/pci/intel/ipu3/ipu3-cio2*
36 Both of the drivers implement V4L2, Media Controller and V4L2 sub-device
38 MIPI CSI-2 interfaces through V4L2 sub-device sensor drivers.
44 interface to the user space. There is a video node for each CSI-2 receiver,
47 The CIO2 contains four independent capture channel, each with its own MIPI CSI-2
48 receiver and DMA engine. Each channel is modelled as a V4L2 sub-device exposed
49 to userspace as a V4L2 sub-device node and has two pads:
53 .. flat-table::
54 :header-rows: 1
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| D | si4713.rst | 1 .. SPDX-License-Identifier: GPL-2.0
14 ----------------------------
17 Basically, it has transmission and signal noise level measurement features.
20 The chip also allows integrated receive power scanning to identify low signal
29 -------------------------
34 The I2C device driver exports a v4l2-subdev interface to the kernel.
36 using the v4l2-subdev calls (g_ext_ctrls, s_ext_ctrls).
48 ----------------------
51 Here is an output from v4l2-ctl util:
53 .. code-block:: none
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| D | si476x.rst | 1 .. SPDX-License-Identifier: GPL-2.0
12 -------------------
14 - According to the SiLabs' datasheet it is possible to update the
15 firmware of the radio chip in the run-time, thus bringing it to the
23 -------------------------------
31 * /sys/kernel/debug/<device-name>/acf
52 0x05 smute 0 - Audio is not soft muted
53 1 - Audio is soft muted
60 0x10 pilot 0 - Stereo pilot is not present
61 1 - Stereo pilot is present
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| /Documentation/driver-api/thermal/ |
| D | intel_dptf.rst | 1 .. SPDX-License-Identifier: GPL-2.0
12 ------------
31 ----------------------------
43 "42A441D6-AE6A-462b-A84B-4A8CE79027D3" : Passive 1
45 "3A95C389-E4B8-4629-A526-C52C88626BAE" : Active
47 "97C68AE7-15FA-499c-B8C9-5DA81D606E0A" : Critical
49 "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D" : Adaptive performance
51 "5349962F-71E6-431D-9AE8-0A635B710AEE" : Emergency call
53 "9E04115A-AE87-4D1C-9500-0F3E340BFE75" : Passive 2
55 "F5A35014-C209-46A4-993A-EB56DE7530A1" : Power Boss
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| /Documentation/userspace-api/media/v4l/ |
| D | ext-ctrls-rf-tuner.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _rf-tuner-controls:
16 called Zero-IF tuners. Older tuners were typically simple PLL tuners
28 .. _rf-tuner-control-id:
47 range and step are driver-specific.
64 range and step are driver-specific.
67 LNA (low noise amplifier) gain is first gain stage on the RF tuner
72 driver-specific.
76 located inside mixer block, where RF signal is down-converted by the
78 The range and step are driver-specific.
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| /Documentation/hwmon/ |
| D | sht3x.rst | 6 * Sensirion SHT3x-DIS
13 - https://sensirion.com/media/documents/213E6A3B/63A5A569/Datasheet_SHT3x_DIS.pdf
14 …- https://sensirion.com/media/documents/051DF50B/639C8101/Sensirion_Humidity_and_Temperature_Senso…
16 * Sensirion STS3x-DIS
23 …- https://sensirion.com/media/documents/1DA31AFD/61641F76/Sensirion_Temperature_Sensors_STS3x_Data…
24 … - https://sensirion.com/media/documents/292A335C/65537BAF/Sensirion_Datasheet_STS32_STS33.pdf
28 - David Frey <david.frey@sensirion.com>
29 - Pascal Sachs <pascal.sachs@sensirion.com>
32 -----------
34 This driver implements support for the Sensirion SHT3x-DIS and STS3x-DIS
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