R3920-CFAB-E1B

Preconfigured DSP System for Hearing Aids RHYTHM R3920 Description RHYTHMt R3920 is a preconfigured hearing health processor based on a DSP platform. Featuring 16 channels of Wide Dynamic Range Compression and Impulse Noise Reduction, R3920 encompasses a rich set of advanced sound processing algorithms and is ideal for high end, full-featured hearing aids. The R3920 hybrid is available in one of the industry’s smallest form-factors and is well-suited for all hearing aid types, including those placed deep in the ear canal. www.onsemi.com 25 PAD HYBRID CASE 127DN Features and Benefits © Semiconductor Components Industries, LLC, 2015 March, 2021 − Rev. 7 1 PAD CONNECTION 17 18 VIN1 1 VREG TIN 16 19 ARD1 2 MGND DAI 15 20 ARD2 3 GND VC 14 21 N/C 4 PGND D_VC 13 22 N/C 5 OUT+ SDA 12 23 N/C 6 OUT− CLK 11 7 VBP MS1 10 25 24 N/C VIN2 N/C Wide Dynamic Range Compression (WDRC) − R3920 contains 16 Channels of Wide Dynamic Range Compression, each with individual settings for Squelch Attentuation and Threshold, Low Level Gain, High Level Gain, Upper and Lower Thresholds, and Compression Ratio. Independent level detectors for both Squelch and WDRC are available with customizable attack and release times set in each channel. Impulse Noise Reduction (INR) – Loud, impulsive sounds in the environment such as slamming doors, dropped items, or clattering dishes can become uncomfortably or dangerously loud in a traditional hearing aid. The INR algorithm actively monitors and processes the incoming acoustic signal for such sounds. It ensures that the output sound preserves the integrity of the speech signal and is descriptive of the environment, while maintaining an optimal comfort level for the hearing aid user. Acoustic Environment Classification − iSceneDetect analyzes incoming acoustic signals in order to determine the appropriate classification for a given acoustic environment. Six separate environments are supported by iSceneDetect: quiet, speech in quiet, noise, speech in noise, music, and wind. The feature uses this classification to automatically adjust settings of other features for optimum audio performance. iLog 4.0 Datalogging − Enables the recording of various hearing aid parameters such as program selection, volume setting and ambient sound levels. The sampling interval can be configured to record from every 4 seconds up to once every 60 minutes. The manufacturer can program the fitting system to retrieve the data for further analysis after an extensive period of wearing the hearing aid. This allows the audiologist to fine tune the hearing aid and further counsel the end-user. Automatic Adaptive Directionality − The Automatic Adaptive Directional Microphone (ADM) algorithm automatically reduces the level of sound sources that originate from behind or to the side of the hearing aid wearer without affecting sounds from the front. The algorithm can also gather input from the acoustic iSceneDetect environmental classifier algorithm and automatically select whether directionality is needed or not, translating into additional current savings. 9 8 VB MS2 (Bottom View) MARKING DIAGRAM R3920−CFAB XXXXXX R3920−CFAB = Specific Device Code XXXXXX = Work Order Number ORDERING INFORMATION See detailed ordering and shipping information on page 9 of this data sheet. Publication Order Number: R3920/D RHYTHM R3920 Adaptive Feedback Canceller − Automatically reduces acoustic feedback. It allows for an increase in the stable gain while minimizing artifacts for music and tonal input signals. Additional tuning parameters make for more precise tuning of the algorithm to the hearing aid. The development tools for the R3920 offer a special calibration module to help assess the maximum stable gain in the hearing aid the manufacturer has built to further optimize the Adaptive Feedback Canceller algorithm. Adaptive Noise Reduction − The Adaptive Noise Reduction algorithm monitors noise levels independently in 128 individual bands and employs advanced psychoacoustic models to reduce noise and provide user comfort. The algorithm can be set for varying levels of aggressiveness from 3 dB up to 12 dB. Automatic Receiver Detection − For Receiver−in−Canal (RIC) devices with field replaceable receivers, R3920 allows manufacturers to code different receiver types so they are automatically recognizable in software, eliminating potential selection errors. Tinnitus Masking − R3920 is equipped with a noise source that can be used to mask tinnitus. The noise can be shaped and attenuated and then summed into the audio path either before or after the volume control. A white noise signal is generated and inserted into the audio path either before or after the volume control. Filtering can be performed on the white noise signal in order to shape the noise signal to a desired frequency and bandwidth. The tinnitus masker can be used as a stand alone tinnitus making device or as part of a hearing aid. EVOKE Advanced Acoustic Indicators − Allows hearing aid manufacturers to provide more pleasing, multi−frequency tones simulating musical notes or chords to indicate events such as program or volume changes. In−situ Tone Generator − The narrow−band noise stimulus feature can be used for in−situ validation of the hearing aid fitting. The frequency, level and duration of the stimuli are individually adjustable. Other Key Features − R3920 also supports the following features: Directional processing, built−in feedback path measurement, cross fading between audio paths for click−free program changes, 16−band graphic equalizer, 8 generic biquad filters (configurable as parametric or other filter types), programming speed enhancements, optional peak clipping, flexible compression adjustments, direct interfaces to analog or digital volume control, rocker switch, direct audio input and telecoil. Rhythm R3920 also encompasses industry−leading security features to avoid cloning and software piracy. Features • 16 Channel WDRC • Advanced Research Algorithms: Impulse Noise Reduction (INR) iSceneDetect Environmental Classification ♦ Automatic Adaptive Directional Microphones (ADM) ♦ Directional Processing ♦ 128−band Adaptive Noise Reduction ♦ Next−Generation Adaptive Feedback Cancellation (AFC) iLog 4.0 Datalogging Tinnitus Masking Noise Generator Evoke Acoustic Indicators Auto Telecoil with Programmable Delay Feedback Path Measurement Tool AGC−O with Variable Threshold, Time Constants, and Optional Adaptive Release 16−band Graphic Equalizer Narrow−Band Noise Stimulus SDA or I2C Programming 8 Biquadratic Filters 4 Analog Inputs 16 kHz or 8 kHz Bandwidth 6 Fully Configurable Memories with Audible Memory Change Indicator 96 dB Input Dynamic Range with Headroom Extension 128−bit Fingerprint Security System and Other Security Features to Protect Against Device Cloning and Software Piracy High Fidelity Audio CODEC Soft Acoustic Fade between Memory Changes Drives Zero−Bias 2−Terminal Receivers Internal or External Digital Volume Control with Programmable Range Digital Volume Control Level Retention After Power Cycle Rocker Switch Support Support for Active Hi or Active Lo Switching 20−bit Audio Processing E1 RoHS Compliant Hybrid These Devices are Pb−Free and are RoHS Compliant ♦ ♦ • • • • • • • • • • • • • • • • • • • • • • • • • Packaging Information • Hybrid Typical Dimensions: 0.220 x 0.125 x 0.060 in. (5.59 x 3.18 x 1.52 mm) Support Tools • Hybrid Jig • DSP3 Programming Box • ARK Software Support www.onsemi.com 2 RHYTHM R3920 BLOCK DIAGRAM VB 8 R3920 VOLTAGE REGULATOR 1 POST BIQUAD FILTERS 3&4 A/D 18 * ADAPTIVE DIRECTIONAL MICROPHONE 17 16 15 ACOUSTIC INDICATORS M U X A/D POR CIRCUITRY CROSS FADER S ** MIC/TCOIL COMP AGC−O VOLUME CONTROL S WIDEBAND GAIN CONTROL A/D 14 CONTROL (MS/DIGVC) 10 POST BIQUAD FILTERS 1&2 ENVIRONMENTAL CLASSIFICATION FREQUENCY BAND ANALYSIS FREQUENCY BAND SYNTHESIS 13 9 WDRC (16 channels) PROGRAMMING INTERFACE Noise Reduction DATA LOGGING Graphic EQ (16 bands) CLOCK GENERATOR Impulse Noise Reduction (INR) 19 20 5 Zero Biased Receiver 2 11 D/A HBRIDGE NOISE GENERATOR AND SHAPER FEEDBACK CANCELLER PRE BIQUAD FILTERS 12 PEAK CLIPPER 7 21 22 23 3 Figure 1. Hybrid Block Diagram www.onsemi.com 3 EEPROM RHYTHM R3920 SPECIFICATIONS Table 1. ABSOLUTE MAXIMUM RATINGS Parameter Value Units 0 to +40 °C −20 to +70 °C 50 mW Maximum Operating Supply Voltage 1.65 VDC Absolute Maximum Supply Voltage 1.8 VDC Operating Temperature Range Storage Temperature Range Absolute Maximum Power Dissipation Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. WARNING: Electrostatic Sensitive Device − Do not open packages or handle except at a static−free workstation. WARNING: Moisture Sensitive Device − RoHS Compliant; Level 3 MSL. Do not open packages except under controlled conditions. Table 2. ELECTRICAL CHARACTERISTICS (Supply Voltage VB = 1.25 V; Temperature = 25°C) Parameter Symbol Conditions Min Typ Max Units Minimum Operating Supply Voltage VBOFF Ramp down, audio path 0.93 0.95 0.97 V Ramp down, control logic 0.77 0.80 0.83 Supply Voltage Turn On Threshold VBON Ramp up, zinc−air 1.06 1.10 1.16 Ramp up, NiMH 1.16 1.20 1.24 All functions, 32 kHz sampling rate − 730 − All functions, 16 kHz sampling rate − 620 − Hybrid Current V mA EEPROM Burn Cycles − − 100 k − − Low Frequency System Limit − − − 125 − Hz High Frequency System Limit − − − 16 − kHz THD VIN = −40 dBV − − 1 % THDM VIN = −15 dBV, Headroom Extension − ON − − 3 % fCLK − 3.973 4.096 4.218 MHz VREG − 0.87 0.90 0.93 V PSRRSYS 1 kHz, Input referred, Headroom Extension enabled − 70 − dB Input Referred Noise IRN Bandwidth 100 Hz − 8 kHz − −108 −106 dBV Input Impedance ZIN 1 kHz − 3 − MW Anti−aliasing Filter Rejection − f = [DC − 112 kHz], VIN = −40 dBV − 80 − dB Crosstalk − Between both A/D and Mux − 60 − dB Maximum Input Level − − − −15 −13 dBV VAN_IN VIN1, VIN2, Al 0 − 800 mV VAN_TIN TIN −100 − 800 Input Dynamic Range − Headroom Extension − ON Bandwidth 100 Hz − 8 kHz − 95 96 dB Audio Sampling Rate − − 8 − 48 kHz − 100 Hz − 8 kHz − 88 − dB Total Harmonic Distortion THD at Maximum Input Clock Frequency cycles REGULATOR Regulator Voltage System PSRR INPUT Analogue Input Voltage Range OUTPUT D/A Dynamic Range www.onsemi.com 4 RHYTHM R3920 Table 2. ELECTRICAL CHARACTERISTICS (Supply Voltage VB = 1.25 V; Temperature = 25°C) Parameter Symbol Conditions Min Typ Max Units ZOUT − − 10 13 W Resolution (monotonic) − − 7 − − bits Zero Scale Level − − − 0 − V Full Scale Level − − − VREG − V RVC Three−terminal connection 200 − 1000 kW − − − − 42 dB Logic 0 Voltage − − 0 − 0.3 V Logic 1 Voltage − − 1 − 1.25 V Stand−by Pull Up Current − Creftrim = 6 3 5 6.5 mA Sync Pull Up Current − Creftrim = 6 748 880 1020 mA Max Sync Pull Up Current − Creftrim = 15 − 1380 − mA Min Sync Pull Up Current − Creftrim = 0 − 550 − mA Logic 0 Current (Pull Down) − Creftrim = 6 374 440 506 mA Logic 1 Current (Pull Up) − Creftrim = 6 374 440 506 mA TSYNC Baud = 0 237 250 263 ms Baud = 1 118 125 132 Baud = 2 59 62.5 66 Baud = 3 29.76 31.25 32.81 Baud = 4 14.88 15.63 16.41 Baud = 5 7.44 7.81 8.20 Baud = 6 3.72 3.91 4.10 Baud = 7 1.86 1.95 2.05 OUTPUT Output Impedance CONTROL A/D VOLUME CONTROL Volume Control Resistance Volume Control Range PC_SDA INPUT PC_SDA OUTPUT Synchronization Time (Synchronization Pulse Width) Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 5 RHYTHM R3920 Table 3. I2C TIMING Standard Mode Fast Mode Symbol Min Max Min Max Units Clock Frequency fPC_CLK 0 100 0 400 kHz Hold time (repeated) START condition. After this period, the first clock pulse is generated. tHD;STA 4.0 − 0.6 − msec LOW Period of the PC_CLK Clock tLOW 4.7 − − − msec HIGH Period of the PC_CLK Clock tHIGH 4.0 − − − msec Set−up time for a repeated START condition tSU;STA 4.7 − − − msec Data Hold Time: for CBUS Compatible Masters for I2C−bus Devices tHD;DAT 5.0 0 (Note 1) − 3.45 (Note 2) − 0 (Note 1) − 0.9 (Note 2) Data set−up time tSU;DAT 250 − 100 − nsec Rise time of both PC_SDA and PC_CLK signals tr − 1000 20 + 0.1 Cb (Note 4) 300 nsec Fall time of both PC_SDA and PC_CLK signals tf − 300 20 + 0.1 Cb (Note 4) 300 nsec tSU;STO 4.0 − 0.6 − nsec tBUF 4.7 − 1.3 − msec Output fall time from VIHmin to VILmax with a bus capacitance from 10 pF to 400 pF tof − 250 20 + 0.1 Cb 250 nsec Pulse width of spikes which must be suppressed by the input filter tSP n/a n/a 0 50 nsec Capacitive load for each bus line Cb − 400 − 400 pF Parameter Set−up time for STOP condition Bus free time between a STOP and START condition msec 1. A device must internally provide a hold time of at least 300 ns for the PC_SDA signal to bridge the undefined region of the falling edge of PC_CLK. 2. The maximum tHD;DAT has only to be met if the device does not stretch the LOW period (tLOW) of the PC_CLK signal. 3. A Fast−mode I2C−bus device can be used in a Standard−mode I2C−bus system, but the requirement tSU;DAT P250ns must then be met. This will automatically be the case if the device does not stretch the LOW period of the PC_CLK signal. If such a device does stretch the LOW period of the PC_CLK signal, it must output the next data bit to the PC_SDA line tr max + tSU;DAT = 1000 + 250 = 1250 ns (according to the Standard−mode I2C−bus specification) before the PC_CLK line is released. 4. Cb = total capacitance of one bus line in pF. www.onsemi.com 6 RHYTHM R3920 Figure 2. I2C Mode Timing www.onsemi.com 7 RHYTHM R3920 TYPICAL APPLICATIONS VB 8 R3920 VOLTAGE REGULATOR 1 A/D 18 3k75 ACOUSTIC INDICATORS 3k75 M U X 16 3k75 * ADAPTIVE DIRECTIONAL MICROPHONE 17 CROSS FADER Σ PEAK CLIPPER 7 OUT D/A HBRIDGE NOISE GENERATOR AND SHAPER FEEDBACK CANCELLER VOLUME CONTROL AGCO PRE BI Q UA D FILTERS Σ WIDEBAND GAIN CONTROL A/D POST BIQUAD FILTERS 1&2 ENVIRONMENTAL CLASSIFICATION 128 bands FREQUENCY BAND ANALYSIS 14 200k 13 2 FREQUENCY BA N D SYNTHESIS CONTROL (MS/DIGVC) 10 9 WDRC (16 channels) PROGRAMMING INTERFACE 11 LP FILTER 6 4 3k75 12 5 ** MIC/TCOIL COMP A/D 15 POST BIQUAD FILTERS 3&4 POR CIRCUITRY Noise Reduction DATA LOGGING Graphic EQ (16 bands) CLOCK GENERATOR EEPROM Impulse Noise Reduction (INR) 19 20 21 22 23 3 * If Input Mode = 1 mic omni, mic + telecoil, mic + DAI ** If Input Mode = 2 mic omni, rear only, directional Note: All resistors in ohms and all capacitors in farads, unless otherwise stated. Figure 3. Test Circuit VB 8 R3920 VOLTAGE REGULATOR 1 POST BIQUAD FILTERS 3&4 A/D 18 ADAPTIVE DIRECTIONAL MICROPHONE 17 16 15 ACOUSTIC INDICATORS M U X A/D * POR CIRCUITRY CROSS FADER Σ PEAK CLIPPER D/A HBRIDGE 4 MIC/TCOIL COMP AGCO VOLUME CONTROL Σ WIDEBAND GAIN CONTROL A/D POST BIQUAD FILTERS 1&2 ENVIRONMENTAL CLASSIFICATION 128 bands FREQUENCY BAND ANALYSIS FREQUENCY BA N D SYNTHESIS CONTROL (MS/DIGVC) Noise Reduction DATA LOGGING Graphic EQ (16 bands) CLOCK GENERATOR Impulse Noise Reduction (INR) 19 20 21 22 23 3 * If Input Mode = 1 mic omni, mic + telecoil, mic + DAI ** If Input Mode = 2 mic omni, rear only, directional Note: All resistors in ohms and all capacitors in farads, unless otherwise stated. Figure 4. Typical Application Circuit www.onsemi.com 8 10 9 WDRC (16 channels) PROGRAMMING INTERFACE 14 13 2 11 6 ** PRE BI Q UA D FILTERS 12 5 Zero Biased Receiver NOISE GENERATOR AND SHAPER FEEDBACK CANCELLER 7 EEPROM RHYTHM R3920 ORDERING INFORMATION Device R3920−CFAB−E1T Package Shipping† 25 Pad Hybrid Case 127DN 250 Units / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Tools Ordering Information To order a Hybrid Jig Evaluation Board for Rhythm R3920 contact your Sales Account Manager or FAE and use part number SA3400GEVB. To order the DSP3 Programming box use part number SU6701−E1. www.onsemi.com 9 RHYTHM R3920 PAD LOCATIONS Table 4. PAD POSITION AND DIMENSIONS Pad Position Pad Dimensions Pad No. X Y Xdim (mil) Ydim (mil) 1 0 0 20 33 2 −27 0 20 33 3 −54 −5 20 23 4 −81 −5 20 23 5 −108 −5 20 23 6 −135 −5 20 23 7 −162 −5 20 23 8 −189 0 20 33 9 −189 42 20 23 10 −189 85 20 23 11 −162 85 20 23 12 −135 85 20 23 13 −108 85 20 23 14 −81 85 20 23 15 −54 85 20 23 16 −27 85 20 23 17 0 85 20 23 18 0 42 20 23 19 −27 42 20 23 20 −54 42 20 23 21 −81 42 20 23 22 −108 42 20 23 23 −135 42 20 23 24 −162 26.5 18 12 25 −162 53.5 18 12 www.onsemi.com 10 RHYTHM R3920 Table 4. PAD POSITION AND DIMENSIONS Pad No. X Y Xdim (mm) Ydim (mm) 1 0 0 0.508 0.838 2 −0.686 0 0.508 0.838 3 −1.372 −0.127 0.508 0.584 4 −2.057 −0.127 0.508 0.584 5 −2.743 −0.127 0.508 0.584 6 −3.429 −0.127 0.508 0.584 7 −4.115 −0.127 0.508 0.584 8 −4.801 0 0.508 0.838 9 −4.801 1.067 0.508 0.584 10 −4.801 2.159 0.508 0.584 11 −4.115 2.159 0.508 0.584 12 −3.429 2.159 0.508 0.584 13 −2.743 2.159 0.508 0.584 14 −2.057 2.159 0.508 0.584 15 −1.372 2.159 0.508 0.584 16 −0.686 2.159 0.508 0.584 17 0 2.159 0.508 0.584 18 0 1.067 0.508 0.584 19 −0.686 1.067 0.508 0.584 20 −1.372 1.067 0.508 0.584 21 −2.057 1.067 0.508 0.584 22 −2.743 1.067 0.508 0.584 23 −3.429 1.067 0.508 0.584 24 −4.115 0.673 0.457 0.305 25 −4.115 1.359 0.457 0.305 RHYTHM is a trademarks of Semiconductor Components Industries, LLC. www.onsemi.com 11 MECHANICAL CASE OUTLINE PACKAGE DIMENSIONS SIP25, 5.59x3.18 CASE 127DN ISSUE A SCALE 2:1 DATE 21 JUL 2020 GENERIC MARKING DIAGRAM* XXXXXXXXXX ZZZZZZ XX = Specific Device Code ZZ = Lot Traceability DOCUMENT NUMBER: DESCRIPTION: 98AON89696F SIP25, 5.59x3.18 *This information is generic. Please refer to device data sheet for actual part marking. Pb−Free indicator, “G” or microdot “G”, may or may not be present. Some products may not follow the Generic Marking. Electronic versions are uncontrolled except when accessed directly from the Document Repository. Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red. PAGE 1 OF 1 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. ON Semiconductor reserves the right to make changes without further notice to any products herein. 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