DynamEQ® II WDRC System GR3031/GR3032 - DATA SHEET FEATURES DEVICE DESCRIPTION • dual channel signal processing The DynamEQ ® II hybrid family is a second generation Wide Dynamic Range Compression (WDRC) system. • 2nd (4th) order state variable filter GR3031 (GR3032) hybrid incorporates 12 dB/oct (24 dB/oct) filtering. All capacitors necessary for operation are included. The hybrid was designed for reflowability. • adjustable crossover frequency • adjustable compression ratio from 1:1 to 4:1 • independent compression ratio adjustment for low and high frequency band The gain and frequency response is dependant on the user’s environment. • adjustable AGC threshold levels Twin averaging detector circuits are optimized for sound quality during normal listening without sacrificing comfort during sudden loud inputs. • unique twin average detectors • handles high input levels • low THD and IMD distortion All input signals to DynamEQ ® II, are processed by 2:1 compression before subsequent band splitting. • drives class D Integrated Receivers The 12 dB/oct (24 dB/oct) band split filter ahead of the expander/compressor circuits allows for independent compression ratio adjustment (1:1 to 4:1) in high and low frequency channels. • MPO range externally adjustable • reflowable package STANDARD PACKAGING Hybrid Typical Dimensions 0.250 in x 0.115 in x 0.080 in (6.35 mm x 2.91 mm x 2.03 mm) The gain setting stage is followed by a Class D Integrated Receiver preamplifier stage. Symmetrical peak clipping is used to achieve MPO adjustment. VB 1:1 14 16 VREG 9 C6 C5 0µ22 10n 1M 1M SLOW AVERAGE DETECTOR REGULATOR C1 0µ1 2:1 10 4:1 11 RHI 12 RLO 13 FAST AVERAGE DETECTOR 1 CONTROL RTH 15 RECTIFIER X 50k R C2 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER 10k -A IN 8 0µ2 GND Vb AGC_IN C4 -B 17 OUT -C 0µ1 48k 8k4 RL Low Frequency Expander / Compressor 12k 6 48k RH High Frequency Expander / Compressor 14k 5 MPO C3 7 All resistors in ohms, all capacitors in microfarads, unless otherwise stated Patent Pending Revision Date: May 1998 GR3031 (GR3032) C7 0µ22 0µ1 Rƒc 2 FOUT 1 3 BCIN BIN 4 BOUT FUNCTIONAL BLOCK DIAGRAM Document No. 521 - 35 - 03 GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996 Web Site: www.gennum.com E-mail: [email protected] PAD CONNECTION ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE / UNITS Supply Voltage 3 VDC Power Dissipation 25 mW Operating Temperature Range -10° C to 40° C Storage Temperature Range -20° C to 70° C OUT VB RTH 1:1 RLO RHI 4:1 2:1 16 15 14 13 12 11 10 9 IN 8 17 1 CAUTION CLASS 1 ESD SENSITIVITY VREG 2 BCIN FOUT 3 4 5 6a BIN BOUT MPO 6b 7 Rƒc GND ELECTRICAL CHARACTERISTICS Conditions: Supply Voltage VB = 1.3 V, Frequency = 1 kHz, Temperature = 25°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS µA Hybrid Current I AMP - 370 530 Minimum Voltage Vb 1.1 - - V Total Harmonic Distortion THD V IN = -40dBV at 1kHz - 0.2 1.0 % THD with Maximum Allowable Input THDM VIN = -23dBV, Rvc = 47kΩ - 2 10 % Aweight - 3.0 - Input Referred Noise IRN µVRMS Total System Gain AV VIN = -90dBV 46 49 52 dB Regulator Voltage VREG I LOAD = 30µA 890 930 1000 mV AGC Lower Threshold THLO -91 -87 -83 dBV Upper Threshold THHI -36 -32 -28 dBV Compression Gain Range ∆A Gain(-90dBV IN) -Gain(-30dBV IN) 37.5 40.5 43.5 dB System Gain in Compression A60 V IN =-60dBV 26 29 32 dB 0.9 1.0 1.1 Ratio 3.6 4.0 4.3 Ratio - 10 - ms - 220 - ms Min. Compression Ratio CMP1 :1 V IN=3kHz, -60dBV to -40dBV, Rhp=1:1 Rlp=1:1 Max. Comp. Ratio CMP 4 :1 VIN =3kHz, -60dBV to -40dBV, Rhp=4:1, Rlp=4:1 Fast Detector Time Constant Slow Detector Time Constant τFAST τSLOW FILTER Maximum Cross-over Frequency ƒc_0 Rƒc=0Ω 3.0 3.9 - kHz Nominal Cross-over Frequency ƒc_22 Rƒc=22kΩ 1.5 1.9 2.3 kHz Minimum Cross-over Frequency ƒc_220 Rƒc=220kΩ - 0.9 1.4 Filter Rolloff Rate (GS3027) - 12 - dB/oct kHz (GS3028) - 24 - dB/oct - - - Open Loop Gain (B) AOL_B - 52 - dB Input Impedance (A) RIN 9 11 13 kΩ 7 9 11 dB -14.5 -12.5 -10.5 13 15 17 dB - 24 - kΩ STAGE A and B OUTPUT STAGE Stage Gain Max Output Level MPO Range Output Resistance AC MPO ∆MPO V IN=-30dBV RVC =220kΩ,V IN=-25dBV RMPO=0Ω to 50kΩ ROUT All conditions and parameters remain as shown in Test Circuit unless otherwise stated in "CONDITIONS" column. 521 - 35 - 03 2 dBV VB 16 REGULATOR 9 C1 0µ1 2µ2 14 C6 C5 0µ22 10n 1M 1M SLOW AVERAGE DETECTOR 10 11 12 13 FAST AVERAGE DETECTOR 1 CONTROL 15 RECTIFIER X R =∞ TH 50k Vb R AGC_IN 48k RH C2 3.9k 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER 10k -A 8 VIN 0µ2 C4 -B 17 -C 0µ1 RL 8k4 48k 50k Low Frequency Expander / Compressor 12k 6 High Frequency Expander / Compressor 14k 5 C3 GR3031 (GR3032) C7 0µ22 0µ1 2 7 All resistors in ohms, all capacitors in microfarads, unless otherwise stated 1 3 Rƒc = 22k R =0 MPO 4 R = 100k VC Fig. 1 Production Test Circuit RHI 200k Linear VB RLO 200k Linear 14 16 REGULATOR 9 C1 0µ1 10 C5 C6 0µ22 10n 1M 1M SLOW AVERAGE DETECTOR 11 12 13 FAST AVERAGE DETECTOR 1 RTH 100k Log CONTROL 15 RECTIFIER X R AGC_IN C2 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER 10k -A 8 0µ2 Any Knowles or Microtronic microphone VB Vb 50k C4 -B -C 17 0µ1 48k RL Low Frequency Expander / Compressor 12k 6 48k RH High Frequency Expander / Compressor Any Knowles Class D receiver 2µ2 8k4 14k 5 R MPO 50k Log C3 2 7 All resistors in ohms, all capacitors in microfarads, unless otherwise stated GR3031 (GR3032) C7 0µ22 0µ1 1 R ƒc 100k Log 3 24 R VC 100k Log Fig. 2 Maximum Flexibility Hearing Instrument Application 3 521 - 35 - 03 VB 14 16 C5 0µ22 10n 1M 1M SLOW AVERAGE DETECTOR REGULATOR 9 C6 C1 0µ1 11 10 12 13 FAST AVERAGE DETECTOR 1 CONTROL 15 RECTIFIER X 50k VB Vb R AGC_IN C2 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER 10k -A 8 0µ2 Any Knowles or Microtronic microphone 48k RH High Frequency Expander / Compressor C4 -B 0µ1 Any Knowles Class D receiver 48k 8k4 RL Low Frequency Expander / Compressor 12k 6 17 -C 14k 5 C3 GR3031 (GR3032) C7 0µ22 0µ1 2 7 1 3 4 All resistors in ohms, all capacitors in microfarads, unless otherwise stated R VC 100k Log Fig. 3 Minimum Component Hearing Instrument Application VB=1.3V RHI1 = 200k RHI2 = 0 RLO1 = 200k RLO2 = 0 14 16 REGULATOR 9 C1 0µ1 2µ2 C6 C5 0µ22 10n 1M 1M SLOW AVERAGE DETECTOR 10 11 12 13 FAST AVERAGE DETECTOR 1 CONTROL 15 R TH RECTIFIER X 50k =∞ Vb R AGC_IN C2 3.9k 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER 10k -A 8 0µ2 Pink Noise Generator or 1kHz for I/O C4 -B 17 -C 0µ1 48k 8k4 RL Low Frequency Expander / Compressor 12k 6 48k RH High Frequency Expander / Compressor 50k 14k 5 C3 2 7 All resistors in ohms, all capacitors in microfarads, unless otherwise stated GR3031 (GR3032) C7 0µ22 0µ1 R 1 =100k ƒc Fig. 4 Characterization Circuit (Used to generate typical curves) 521 - 35 - 03 4 3 4 R VC =100k R MPO =0 TYPICAL PERFORMANCE CURVES -10 50 2:1 3:1 -30 40 V IN = -60dBV 4:1 30 -40 GAIN (dB) OUTPUT LEVEL (dBV) V IN = -96dBV V IN = -80dBV -20 1.5:1 -50 1.2:1 -60 20 V IN = -40dBV V IN = -20dBV 10 1:1 -70 0 -80 -90 -100 -90 - 80 -70 -60 -50 -40 -30 -10 20 -20 20k Fig. 6 Frequency Response for Different Input Levels 50 V IN = -60dBV RVC = 220kΩ 40 0.8 RVC = 100kΩ 0.7 30 GAIN (dB) ) RHI1 RHI1+R HI2 ( 10k Fig. 5 I/O Transfer function for Different Compression Ratios 0.9 0.6 0.5 0.4 RVC = 47kΩ RVC = 22kΩ 20 RVC = 10kΩ 10 0.3 0.2 0 0.1 0.0 1.0 1.4 1.8 2.2 2.6 3.0 3.4 -10 20 3.8 4.0 100 1k 10k 20k COMPRESSION RATIO (RATIO) FREQUENCY (Hz) Fig. 7 Compression Settings Resistor Ratio for High Pass Fig. 8 Frequency Response for Different RVC Values Channel (RHI1 & RHI2) and Low Pass Channel (RLO1 & RLO2) -10 -10 COMPRESSION 1:1 RM PO = 0Ω -20 -20 RM PO = 10kΩ OUTPUT LEVEL (dBV) OUTPUT LEVEL (dBV) R LO1 1k FREQUENCY (Hz) 1.0 RLO1+R LO2 100 INPUT LEVEL (dBV) RM PO = 22kΩ RM PO = 50kΩ -30 -40 -30 RTH = ∞ RTH = 0Ω -40 RTH = 10kΩ -50 RTH = 22kΩ RTH = 47kΩ -60 RTH = 100kΩ -50 -50 -40 -30 -70 -100 -20 -90 -80 -70 -60 -50 -40 INPUT LEVEL (dBV) INPUT LEVEL (dBV) Fig. 9 I/O Transfer Function for Fig. 10 I/O Transfer Function for Different RMPO Resistors Different RTH Resistors 5 30 -20 521 - 35 - 03 1000 R H & RL RESISTORS VALUES (kΩ) R AG_C RESISTOR VALUE (kΩ) 1000 198kΩ 100 9kΩ 10 1.6MΩ 100 1:1 -90 -80 -70 -60 -50 -40 30 2:1 4:1 15kΩ 1 -100 1 -100 72kΩ 10 -20 -90 -80 -70 INPUT LEVEL (dBV) 40 40 30 30 20 GAIN (dB) GAIN (dB) 50 Crossover Frequency Rƒc = ∞ 4:1 in Low Frequency 1:1 in High Frequency 10 1k 10k 10 -10 20 20k 100 V IN = -80dBV 1k 10k Fig. 13 Crossover Frequency Representation Fig. 14 Crossover Frequency Representation for GR3031 Processor for GR3032 Processor 50 1:1 in Low Frequency Gain 4:1 in High Frequency 1:1 in Low Frequency Gain 4:1 in High Frequency 40 Rƒc=∞ 30 GAIN (dB) 47kΩ 20 22kΩ 10kΩ 10 Rƒc=∞ 100kΩ 100kΩ 47kΩ 20 22kΩ 10 10kΩ 0Ω 0Ω 0 0 V IN = -80dBV 100 1k 10k -10 20 20k V IN = -80dBV 100 1k 10k FREQUENCY (Hz) FREQUENCY (Hz) 521 - 35 - 03 20k FREQUENCY (Hz) 30 GAIN (dB) 20 FREQUENCY (Hz) 40 -10 20 -20 Crossover Frequency Rƒc = ∞ 1:1 in Low Frequency 4:1 in High Frequency VIN = -80dBV 50 30 0 0 100 -40 4:1 in Low Frequency 1:1 in High Frequency 1:1 in Low Frequency 4:1 in High Frequency -10 20 -50 Fig. 12 Expander / Compressor Resistors Values Fig. 11 Stage A Compressor Feedback Resistor Value 50 -60 INPUT LEVEL (dBV) Fig. 15 GR3031 Frequency Response Fig. 16 GR3032 Frequency Response for Different Rƒc Resistor Values for Different Rƒc Resistor Values 6 20k 10 10 ƒ= 1 kHz THD & NOISE (%) THD & NOISE (%) V IN = -40dBV GR3032 1 1 GR3032 GR3031 0.1 100 1k 0.1 -80 10k GR3031 -70 -60 -50 -40 -30 FREQUENCY (Hz) INPUT LEVEL (dBV) Fig. 17 THD and Noise vs Frequency Fig. 18 THD and Noise vs Input Level -20 10 10 V IN = -40dBV ∆ƒ = 200Hz ƒ = 4kHz ∆ƒ = 200Hz IMD (%) IMD (%) 1 1 GR3031 GR3031 0.1 GR3032 0.1 3k GR3032 10k 0.01 100k -80 -70 -60 -50 -40 -30 FREQUENCY (Hz) INPUT LEVEL (dBV) Fig. 19 Intermodulation Distortion (CCIF) vs Frequency Fig. 20 Intermodulation Distortion -20 (CCIF) vs Input Level 7 521 - 35 - 03 Pad No. PAD POSITION PAD DIMENSION X Y X dim. 1 0.0 0.0 20.0 20.0 2 31.0 0.0 20.0 20.0 3 62.0 0.0 20.0 20.0 4 92.0 0.0 20.0 20.0 0.250 (6.35) Y dim. 20.0 20.0 20.0 20.0 6B 182.0 0.0 20.0 7 212.0 0.0 20.0 20.0 8 217.0 43.0 20.0 20.0 9 212.0 85.0 20.0 20.0 10 182.0 85.0 20.0 20.0 11 152.0 85.0 20.0 20.0 12 122.0 85.0 20.0 20.0 13 92.0 85.0 20.0 20.0 14 62.0 85.0 20.0 20.0 15 31.0 85.0 20.0 20.0 16 0.0 85.0 20.0 20.0 17 -3.0 43.0 20.0 20.0 1 0.000 0.000 0.508 0.508 2 0.787 0.000 0.508 0.508 3 1.575 0.000 0.508 0.508 4 2.337 0.000 0.508 0.508 5 3.099 0.000 0.508 0.508 6A 3.861 0.000 0.508 0.508 6B 4.623 0.000 0.508 0.508 7 5.385 0.000 0.508 0.508 8 5.512 1.092 0.508 0.508 9 5.385 2.159 0.508 0.508 10 4.623 2.159 0.508 0.508 11 3.861 2.159 0.508 0.508 12 3.099 2.159 0.508 0.508 13 2.337 2.159 0.508 0.508 14 1.575 2.159 0.508 0.508 15 0.787 2.159 0.508 0.508 16 0.000 2.159 0.508 0.508 17 -0.076 1.092 0.508 0.508 MIL 20.0 0.0 0.090 MAX (2.28) 16 0.115 (2.92) 15 14 13 12 11 10 9 8 17 0.015 (0.38) 1 2 3 4 5 6a 6b 7 0.0165 (0.42) mm 0.0 152.0 GR3032 122.0 6A XXXXXX 5 Dimension units are in inches. Dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.0000 inches = 25.400 mm. Dimension ±0.003 (±0.08) unless otherwise stated. XXXXXX - work order number. Component name either GR3031 or GR3032. This hybrid is designed to be reflowable for Gennum's reflow process profile. Contact Gennum Representative for pad layout in electronic format. Fig. 21 Hybrid Layout & Dimensions Note: Centre of pad 1 has coordinates 0,0. DOCUMENT IDENTIFICATION: DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. REVISION NOTES: Updated to Data sheet Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. © Copyright August 1995 Gennum Corporation. All rights reserved. 521 - 35 - 03 8 Printed in Canada.