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DynamEQ(R) II WDRC System
GR3031/GR3032 - DATA SHEET
FEATURES * dual channel signal processing * 2nd (4th) order state variable filter * adjustable crossover frequency * adjustable compression ratio from 1:1 to 4:1 * independent compression ratio adjustment for low and high frequency band * adjustable AGC threshold levels * unique twin average detectors * handles high input levels * low THD and IMD distortion * drives class D Integrated Receivers * 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) Twin averaging detector circuits are optimized for sound quality during normal listening without sacrificing comfort during sudden loud inputs. All input signals to DynamEQ (R) II, are processed by 2:1 compression before subsequent band splitting. 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. The gain setting stage is followed by a Class D Integrated Receiver preamplifier stage. Symmetrical peak clipping is used to achieve MPO adjustment. DEVICE DESCRIPTION The DynamEQ (R) II hybrid family is a second generation Wide Dynamic Range Compression (WDRC) system. GR3031 (GR3032) hybrid incorporates 12 dB/oct (24 dB/oct) filtering. All capacitors necessary for operation are included. The hybrid was designed for reflowability. The gain and frequency response is dependant on the user's environment.
VB 16 C6 022 1M C5 10n 1M
1:1 14
2:1 10
4:1 11
RHI 12
RLO 13
VREG 9 C1 01
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 RTH 15 50k R AGC_IN RH High Frequency Expander / Compressor 48k C4 -B -C 01 48k RL Low Frequency Expander / Compressor 14k 8k4 17 OUT CONTROL RECTIFIER X Vb
C2 IN 8 02
10k -A
12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER
GND
6
12k
5
MPO
C3 01 7 2 FOUT C7 022 1 3 4 BOUT
GR3031 (GR3032)
All resistors in ohms, all capacitors in microfarads, unless otherwise stated Patent Pending
Rc
BCIN BIN
FUNCTIONAL BLOCK DIAGRAM
Document No. 521 - 35 - 03
Revision Date: May 1998
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: hipinfo@gennum.com
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range VALUE / UNITS 3 VDC 25 mW -10 C to 40 C OUT -20 C to 70 C 17 VB 16 RTH 15
PAD CONNECTION
1:1 14 RLO 13 RHI 12 4:1 11 2:1 10 VREG 9
8
IN
CAUTION CLASS 1 ESD SENSITIVITY
1
2
3
4
5
6a GND
6b
7 Rc
BCIN FOUT
BIN BOUT MPO
ELECTRICAL CHARACTERISTICS
Conditions: Supply Voltage VB = 1.3 V, Frequency = 1 kHz, Temperature = 25C
PARAMETER Hybrid Current Minimum Voltage Total Harmonic Distortion THD with Maximum Allowable Input Input Referred Noise Total System Gain Regulator Voltage AGC Lower Threshold Upper Threshold Compression Gain Range System Gain in Compression Min. Compression Ratio
SYMBOL I AMP Vb THD THDM IRN AV VREG
CONDITIONS
MIN 1.1
TYP 370 0.2 2 3.0 49 930
MAX 530 1.0 10 52 1000
UNITS A V % % VRMS dB mV
V IN = -40dBV at 1kHz VIN = -23dBV, Rvc = 47k Aweight VIN = -90dBV I LOAD = 30A
46 890
THLO THHI A A60 CMP1 :1 Gain(-90dBV IN) -Gain(-30dBV IN) V IN =-60dBV V IN=3kHz, -60dBV to -40dBV, Rhp=1:1 Rlp=1:1
-91 -36 37.5 26
-87 -32 40.5 29
-83 -28 43.5 32
dBV dBV dB dB
0.9
1.0
1.1
Ratio
Max. Comp. Ratio
CMP 4 :1
VIN =3kHz, -60dBV to -40dBV, Rhp=4:1, Rlp=4:1 3.6 4.0 10 220 4.3 Ratio ms ms
Fast Detector Time Constant Slow Detector Time Constant FILTER Maximum Cross-over Frequency Nominal Cross-over Frequency Minimum Cross-over Frequency Filter Rolloff Rate (GS3027) (GS3028) STAGE A and B Open Loop Gain (B) Input Impedance (A) OUTPUT STAGE Stage Gain Max Output Level MPO Range Output Resistance
FAST SLOW
c_0 c_22 c_220 Rc=0 Rc=22k Rc=220k
3.0 1.5 -
3.9 1.9 0.9 12 24 52 11
2.3 1.4 13
kHz kHz kHz dB/oct dB/oct
AOL_B RIN
9
dB k
AC MPO MPO ROUT
V IN=-30dBV RVC =220k,V IN=-25dBV RMPO=0 to 50k
7 -14.5 13 -
9 -12.5 15 24
11 -10.5 17 -
dB dBV dB k
All conditions and parameters remain as shown in Test Circuit unless otherwise stated in "CONDITIONS" column. 521 - 35 - 03
2
VB
16
C6 022 1M
14 C5 10n 1M
10
11
12
13
9 22 C1 01
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 15 R = TH 50k CONTROL R AGC_IN RH 3.9k 8 C2 02 10k -A 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER High Frequency Expander / Compressor -B -C 01 RL Low Frequency Expander / Compressor 14k 5 8k4 48k 50k 48k C4 17 RECTIFIER X Vb
VIN
6
12k
C3 01 7 2 Rc = 22k C7 022 1 3 4
GR3031 (GR3032)
R =0 MPO
All resistors in ohms, all capacitors in microfarads, unless otherwise stated
R = 100k VC
Fig. 1 Production Test Circuit
RHI 200k Linear
VB
RLO 200k Linear
16 C6 022 1M
14 C5 10n 1M
10
11
12
13
9 C1 01 RTH 100k Log
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 15 50k R AGC_IN RH High Frequency Expander / Compressor 48k C4 -B -C 01 48k RL Low Frequency Expander / Compressor 14k 8k4 22 Any Knowles Class D receiver R MPO 50k Log C3 01 7 2 R c 100k Log C7 022 1 3 4 2 17 CONTROL RECTIFIER X Vb VB
C2 8 02 Any Knowles or Microtronic microphone
10k -A
12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER
6
12k
5
GR3031 (GR3032)
All resistors in ohms, all capacitors in microfarads, unless otherwise stated
R VC 100k Log
Fig. 2 Maximum Flexibility Hearing Instrument Application
3
521 - 35 - 03
VB
16 C6 022 1M C5 10n 1M
14
10
11
12
13
9 C1 01
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 15 50k R AGC_IN RH High Frequency Expander / Compressor 48k C4 -B -C 01 48k RL 12k 14k Low Frequency Expander / Compressor 5 8k4 Any Knowles Class D receiver 17 CONTROL RECTIFIER X Vb VB
C2 8
Any Knowles or Microtronic microphone
10k -A
02
12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER
6
C3 01 7 2 C7 022 1 3 4
GR3031 (GR3032)
All resistors in ohms, all capacitors in microfarads, unless otherwise stated
R
VC 100k Log
Fig. 3 Minimum Component Hearing Instrument Application
RHI1 = 200k RHI2 = 0
VB=1.3V
RLO1 = 200k 16 C6 022 1M C5 10n 1M 14 10 11
RLO2 = 0 12 13
9 22 C1 01
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 15 R
TH
CONTROL 50k R AGC_IN
RECTIFIER X Vb
=
3.9k 8
Pink Noise Generator or 1kHz for I/O
C2 02
10k -A
12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER
RH High Frequency Expander / Compressor
48k C4 -B -C 01 48k 17
6
12k 14k
RL Low Frequency Expander / Compressor
8k4 50k 5
C3 01 7 2 C7 022 1 3 4
GR3031 (GR3032)
R
MPO
=0
All resistors in ohms, all capacitors in microfarads, unless otherwise stated
R
c
=100k
R
VC
=100k
Fig. 4 Characterization Circuit (Used to generate typical curves)
521 - 35 - 03
4
TYPICAL PERFORMANCE CURVES
-10 -20 50 V IN = -96dBV VIN = -80dBV 3:1 -30 -40 -50 -60 -70 -80 -90 -100 0 1.2:1 1:1 1.5:1 4:1 30 2:1 40 VIN = -60dBV
OUTPUT LEVEL (dBV)
GAIN (dB)
20
VIN = -40dBV VIN = -20dBV
10
-90
- 80
-70
-60
-50
-40
-30
-20
-10 20
100
1k
10k
20k
INPUT LEVEL (dBV)
FREQUENCY (Hz)
Fig. 5 I/O Transfer function for Different Compression Ratios
Fig. 6 Frequency Response for Different Input Levels
1.0 0.9
50 VIN = -60dBV 40 RVC = 220k RVC = 100k 30
)
RHI1+RHI2 RHI1
0.8 0.7 0.6 0.5
GAIN (dB)
RVC = 47k RVC = 22k RVC = 10k
(
20
RLO1+RLO2
0.4 0.3 0.2
RLO1
10
0 0.1 0.0 1.0 1.4 1.8 2.2 2.6 3.0 3.4 3.8 4.0 -10 20 100 1k 10k 20k
COMPRESSION RATIO (RATIO)
FREQUENCY (Hz)
Fig. 7 Compression Settings Resistor Ratio for High Pass Channel (RHI1 & RHI2) and Low Pass Channel (RLO1 & RLO2)
Fig. 8 Frequency Response for Different RVC Values
-10 COMPRESSION 1:1 RM PO = 0
-10
-20
OUTPUT LEVEL (dBV)
OUTPUT LEVEL (dBV)
-20
RM PO = 10k RM PO = 22k
-30
RTH = RTH = 0
-30
RM PO = 50k
-40 RTH = 10k -50 RTH = 22k RTH = 47k -60 RTH = 100k
-40
-50
-50
-40
-30
-20
-70 -100
-90
-80
-70
-60
-50
-40
30
-20
INPUT LEVEL (dBV)
INPUT LEVEL (dBV)
Fig. 9 I/O Transfer Function for Different RMPO Resistors
Fig. 10 I/O Transfer Function for Different RTH Resistors
5
521 - 35 - 03
1000
1000
198k
RH & RL RESISTORS VALUES (k)
RAG_C RESISTOR VALUE (k)
1.6M 100
100
10
9k
1:1 10 72k 2:1 4:1 15k 1 -100 -90 -80 -70 -60 -50 -40 30 -20
1 -100 -90 -80 -70 -60 -50 -40 30 -20
INPUT LEVEL (dBV)
INPUT LEVEL (dBV)
Fig. 11 Stage A Compressor Feedback Resistor Value
Fig. 12 Expander / Compressor Resistors Values
50
Rc =
Crossover Frequency
50
Rc =
Crossover Frequency
40
40
30
30
GAIN (dB)
GAIN (dB)
20
4:1 in Low Frequency 1:1 in High Frequency
20
10 1:1 in Low Frequency 4:1 in High Frequency 0 VIN = -80dBV -10 20 100 1k 10k 20k
10 4:1 in Low Frequency 1:1 in High Frequency 0 1:1 in Low Frequency 4:1 in High Frequency -10 20 100 1k VIN = -80dBV 10k 20k
FREQUENCY (Hz)
FREQUENCY (Hz)
Fig. 13 Crossover Frequency Representation for GR3031 Processor
Fig. 14 Crossover Frequency Representation for GR3032 Processor
50
50 1:1 in Low Frequency Gain 4:1 in High Frequency Rc= 100k 1:1 in Low Frequency Gain 4:1 in High Frequency 40 Rc= 100k 30
40
30
GAIN (dB)
47k 20 22k 10 10k 0 0 VIN = -80dBV -10 20 100 1k 10k 20k
GAIN (dB)
47k 20 22k 10 10k 0 0
-10 20
VIN = -80dBV 100 1k 10k 20k
FREQUENCY (Hz)
FREQUENCY (Hz)
Fig. 15 GR3031 Frequency Response for Different Rc Resistor Values
Fig. 16 GR3032 Frequency Response for Different Rc Resistor Values
521 - 35 - 03
6
10 VIN = -40dBV
10 = 1 kHz
THD & NOISE (%)
1
GR3032
THD & NOISE (%)
1 GR3032
0.1 100
GR3031 1k 10k
0.1 -80
GR3031 -70 -60 -50 -40 -30 -20
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 17 THD and Noise vs Frequency
Fig. 18 THD and Noise vs Input Level
10 VIN = -40dBV = 200Hz
10 = 4kHz = 200Hz
1
IMD (%)
1
IMD (%)
GR3031 0.1 GR3032
GR3031
0.1 3k
GR3032 10k 100k
0.01 -80 -70 -60 -50 -40 -30 -20
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 19 Intermodulation Distortion (CCIF) vs Frequency
Fig. 20 Intermodulation Distortion (CCIF) vs Input Level
7
521 - 35 - 03
Pad No.
PAD POSITION X Y
PAD DIMENSION X dim. Y dim.
0.250 (6.35)
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17
0.0 31.0 62.0 92.0 122.0 152.0 182.0 212.0 217.0 212.0 182.0 152.0 122.0 92.0 62.0 31.0 0.0 -3.0 0.000 0.787 1.575 2.337 3.099 3.861 4.623 5.385 5.512 5.385 4.623 3.861 3.099 2.337 1.575 0.787 0.000 -0.076
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 43.0 85.0 85.0 85.0 85.0 85.0 85.0 85.0 85.0 43.0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.092 2.159 2.159 2.159 2.159 2.159 2.159 2.159 2.159 1.092
20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508
20.0 20.0 20.0 20.0 20.0 20.0
MIL
20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508
0.090 MAX (2.28)
16
0.115 (2.92)
0.015 (0.38)
17
1
0.0165 (0.42)
mm
0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508 0.508
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
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. (c) Copyright August 1995 Gennum Corporation. All rights reserved.
521 - 35 - 03
8
GR3032
15 14 13 12 11 10 9 8 2 3 4 5 6a 6b 7
XXXXXX
Hybrid Layout & Dimensions
Printed in Canada.

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