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Details, datasheet, quote on part number:GR3032
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Datasheet text preview:
DynamEQ® 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 ® II, are processed by 2:1 compression before subsequent band splitting. The 12 dB/oct (24 dB/oct) band split filter ahead of the e x p a n d e r / c o m p r e s s o r circuits allows for independent compr ession 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 ® 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 0µ22 1M C5 10n 1M
1:1 14
2:1 10
4:1 11
RHI 12
RLO 13
VREG 9 C1 0µ 1
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 RTH 15 50k R AGC_IN RH High Frequency Expander / Compressor 48k C4 -B -C 48k RL Low Frequency Expander / Compressor 14k 8k4 0µ1 17 OUT CONTROL RECTIFIER X Vb
C2 IN 8 0µ2
10k -A
12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER
GND
6
12k
5
MPO
C3 0µ1 7 2 FOUT C7 0µ22 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 -20 ° C to 70° C OUT 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 = 25°C
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 µA V % % µVRMS dB mV
V IN = -40dBV at 1kHz VIN = -23dBV, Rvc = 47k Aweight VIN = -90dBV I LOAD = 30µA
46 890
THLO THHI A A 60 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 R IN
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 0µ22 1M
14 C5 10n 1M
10
11
12
13
9 2µ2 C1 0µ1
REGULATOR
SLOW AVERAGE DETECTOR
FAST AVERAGE DETECTOR
1 15 R = TH 50k CONTROL R AGC_IN RH 3.9k 8 C2 0µ2 10k -A 12 dB / Oct (24 dB / Oct) BAND SPLIT FILTER High Frequency Expander / Compressor -B -C 0µ1 RL Low Frequency Expander / Compressor 14k 5 8k4 48k 50k 48k C4 17 RECTIFIER X Vb
VIN
6
12k
C3 0µ1 7 2 Rc = 22k C7 0µ22 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 0µ22 1M
14 C5 10n 1M
10
11
12
13
9 C1 0µ1 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 0µ1 48k RL Low Frequency Expander / Compressor 14k 8k4 2µ2 Any Knowles Class D receiver R MPO 50k Log C3 0µ1 7 2 R c 100k Log C7 0µ22 1 3 4 2 17 CONTROL RECTIFIER X Vb VB
C2 8 Any Knowles or Microtronic microphone 0µ2
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
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