ETC GS3011

DynamEQ® I
Dynamic Equalizer
GS3011 - HYB DATA SHEET
FEATURES
DESCRIPTION
• handles high input levels (up to 100 mVRMS)
cleanly
• low THD and IMD distortion
• unique twin average detectors
• dual channel signal processing
The DynamEQ® I hybrid is a dynamically adaptive loudness
growth equalizer. Its gain and frequency response is
dependent on the user's environment, and is designed for
level dependant frequency response providing treble
increase at low levels (TILL). The unique twin averaging
detector circuit dramatically reduces pumping effects and
is optimized for mild to moderate hearing loss.
• adjustable AGC threshold levels
• highpass filter with adjustable corner frequency
• 2:1 compression of high frequencies
DynamEQ® I has two signal paths for dual channel
processing incorporating 4 amplifying stages ( A, B,
C, D ) and the AGC processing circuit.
• no external capacitors or resistors required
STANDARD PACKAGING
Stage A is a highpass channel with 2:1 compression, stage
B is a wideband unity gain buffer. The sum of the two paths
gives a high frequency boost to low level signals, which
gradually compresses to a flat response at high input
levels. Stage C is used for volume control adjustment,
while stage D is a class A power amplifier with receiver
bias current adjustment.
• Hybrid typical dimensions
0.260 in x 0.150 in x 0.120 in
(6.6 mm x 3.81 mm x 3.05 mm)
VB
GND
5
8
C7
2µ2
C6
0µ1
R7
R6
100K
100k
15
7
8
VREG 3
C1
2µ2
REGULATOR
CURRENT
REFERENCE
R1
68k
CHP
AIN
2
16
GC514
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
0.92V
17
RTH 9
14
1
2:1
COMPRESSION
CONTROL
RECTIFIER
VB
24k
4
C2
2
3
5
12k
-A
+ D
- +
-C
3n9
C3
0µ1
R2
12
-B
4
10
DOUT
11 RE
340
50k
13
11
6
9
10
C5
MGND 1
0µ1
R3
50k
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
R5 50k
R4
C4
0µ1
GS3011
50k
7
6
VC1
VC2
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
Document No. 520 - 66 - 07
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
GND
Operating Temperature Range
-10° C to 40° C
Storage Temperature Range
-20° C to 70° C
CAUTION
CLASS 1 ESD SENSITIVITY
MGND
1
A IN
2
VREG
3
5
4
6
7
8
9
CHP
C OUT
C IN
VB
RTH
11
RE
10
D OUT
ELECTRICAL CHARACTERISTICS
Conditions: Input Level VIN = -97 dBV, Frequency = 5 kHz, Temperature = 25°C, Supply Voltage V B = 1.3 V
PARAMETER
SYMBOL
Hybrid Current
I AMP
CONDITIONS
Minimum Voltage
VB
Total Harmonic Distortion
THD
RVC = 15 kΩ; VIN = -40 dBV
Input Referred Noise
IRN
NFB 0.2 to 10 kHz at 12 dB/oct
Total System Gain
AV
VIN = 0 VRMS
MIN
TYP
MAX
UNITS
120
230
330
µA
1.1
-
-
V
-
0.2
1
%
µVRMS
-
2.5
-
51
54
57
1.74:1
1.95:1
2.11:1
Ratio
dB
AGC
Compression Ratio
COMP
VIN = -70 dBV and -80 dBV
Compression Gain Range
ARANGE
RVC = 15 kΩ; Note 1
High Pass Corner Frequency
ƒ HPC
System Gain in Compression
A80
Threshold
VIN = -80dBV, R VC = 15 kΩ
-
-94
-
dBV
26
27
-
dB
-
3.4
-
kHz
28
30
32
dB
130
160
190
µA
OUTPUT STAGE
Minimum Transducer Current
I TR
Maximum Current Sink
I SINK
3
9
-
mA
Output Impedance
ZOUT
20
24
28
kΩ
RE Voltage
VRE
48
52
56
mV
0.89
0.92
0.97
REGULATOR
Regulator Voltage
VREG
All parameters and switches remain as shown in the Test Circuit unless otherwise stated in CONDITIONS column
V PX actual voltage measured on the pin at given condition (X is pin number)
Notes:
1. A RANGE = V P10 [VIN = -97 dBV] - VP10 [VIN = -20 dBV] + 77 dBV
520 - 66 - 07
2
V
VB
5
8
C7
2µ2
C6
0µ1
R7
R6
100k
100k
15
7
8
3
C1
2µ2
14
1
SLOW
AVERAGE
DETECTOR
REGULATOR
2
16
GC514
FAST
AVERAGE
DETECTOR
0.92V
17
9
2:1
COMPRESSION
CONTROL
CURRENT
REFERENCE
R1
68k
RECTIFIER
VB
VB
C2
2
5
12k
3
-A
C3
0µ1
R2
12
+ D
- +
-C
3n9
3k9
RLOAD
1k
24k
4
-B
10
4
11
RE
100
340
50k
VIN
11
6
13
10
9
C5
1
0µ1
R3
R5 50k
R4
50k
50k
C4
0µ1
GS3011
6
7
RVC
All resistors in ohms, all capacitors in farads unless otherwise stated.
100K
Fig.1 Production Test Circuit
VB
8
5
C7
2µ2
C6
0µ1
R7
R6
100k
100k
15
7
8
3
C1
2µ2
REGULATOR
SLOW
AVERAGE
DETECTOR
CURRENT
REFERENCE
R1
68k
EK3024
2
16
GC514
FAST
AVERAGE
DETECTOR
0.92V
17
9
14
1
2:1
COMPRESSION
CONTROL
RECTIFIER
VB
ED1913
24k
4
C2
2
3
5
12k
-A
3n9
C3
0µ1
R2
12
+ D
- +
-C
4
340
-B
50k
13
11
6
9
10
11
RE
100
10
C5
1
0µ1
R5 50k
R4
R3
50k
C4
0µ1
GS3011
50k
7
6
All resistors in ohms, all capacitors in farads unless otherwise stated.
RVC
100K
Fig. 2 Typical Hearing Instrument Application
3
520 - 66 - 07
100Ω
1
EK3024
MIC
5
11
2
+
4
6
7
8
9
10
3
ED1913
-
REC
+
+
VOLUME
CONTROL
BAT
Fig. 3 Typical Hearing Instrument Assembly Diagram
VB
8
5
C7
2µ2
C6
0µ1
R7
R6
100k
100k
15
7
8
3
C1
2µ2
SLOW
AVERAGE
DETECTOR
GC514
2xVB=2.6V
2:1
COMPRESSION
CONTROL
CURRENT
REFERENCE
R1
68k
RTH=∞
2
16
FAST
AVERAGE
DETECTOR
0.92V
17
9
CHP
(Normally not
connected)
REGULATOR
14
1
RECTIFIER
24k
4
C2
2
3
5
12k
-A
-C
+ D
- +
3n9
C3
0µ1
3k9
1k82
VB
R2
12
-B
4
13
11
6
RE
100
10
9
C5
1
0µ1
R3
R5 50k
R4
50k
50k
C4
0µ1
GS3011
6
7
RVC
All resistors in ohms, all capacitors in farads unless otherwise stated.
15K
Fig. 4 Characterization Circuit (used to generate typical curves)
(Equivalent RMS pink noise used as VIN for all frequency responses)
520 - 66 - 07
4
11
340
50k
V IN
10
0
50
V IN = -96dBV
-10
VIN= -90dBV
-20
OUTPUT LEVEL (dBV)
5kHz
40
GAIN (dB)
VIN = -70dBV
30
V IN = -50dBV
VIN = -30dBV
20
VIN = -20dBV
10
2kHz
-30
1kHz
-40
RTH =
∞
-50
5kHz
-60
2kHz
-70
RTH = 0
1kHz
-80
0
20
100
1k
10k
20k
-100
-90
-80
-70
-60
-50
- 40
-30
-20
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 5 Frequency Response for Different Input Levels
Fig. 6 I/O Transfer Function for Different Test
Frequencies. Shown for Min/Max RTH Resistors Values
50
50
VIN =-96dBV
VIN = -50dBV
RVC=100 kΩ
40
40
30
No Capacitance
GAIN (dB)
GAIN (dB)
RVC=47 kΩ
RVC=22 kΩ
20
RVC=15 kΩ
10
CHP=68 nF
30
CHP=33nF
CHP=10nF
20
CHP=0.1µF
V IN=-20dBV
10
0
20
0
20
100
1k
10k
20k
100
1k
10k
20k
FREQUENCY (Hz)
FREQUENCY (Hz)
Fig. 7 Frequency Response for Different RVC Values
Fig. 8 Corner Frequency vs CHP Capacitor Value
0
50
RTH = ∞
-10
= 100kΩ
ƒ = 1kHz
40
= 47kΩ
= 22kΩ
-30
30
GAIN (dB)
OUTPUT LEVEL (dBV)
-20
-40
RTH = 0Ω
-50
22kΩ
20
47kΩ
-60
10
100kΩ
-70
-80
-100
=0
RTH = ∞
VIN=-96dBV
0
-90
-80
-70
-60
-50
- 40
-30
-20
20
100
1k
10k
20k
INPUT LEVEL (dBV)
FREQUENCY (Hz)
Fig. 9 I/O Transfer Function for Different RTH Resistors
Fig. 10 Frequency Characteristics for Different
RTH Values
5
520 - 66 - 07
10
1
VIN=-40dBV
THD & NOISE (%)
THD & NOISE (%)
No Capacitor
1
CHP =0.1µF
0.1
0.01
CHP=0.1µF
0.1
No Capacitor
0.01
-90
-80
-70
-60
-50
-40
-30
-20
100
1k
5k
INPUT LEVEL (dBV)
FREQUENCY (Hz)
Fig. 11 THD & Noise vs Input Level
Fig. 12 THD & Noise vs Frequency
10
1
VIN=-40dBV
CHP=0.1µF
1
IMD (%)
∆ ƒ=200Hz
CHP =0.1µF
IMD (%)
No Capacitor
0.1
No Capacitor
∆ ƒ=200Hz
0.1
ƒ=4kHz
0.01
1k
0.01
-100
-90
-80
-70
-60
-50
-40
-30
-20
Fig. 13 Intermodulation Distortion (CCIF)
vs Input Level
520 - 66 - 07
10k
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 14 Intermodulation Distortion (CCIF)
vs Frequency
6
100k
0.260
(6.60 )
GS3011
XXXXXX
0.130 MAX
(3.30 ) MAX
10
9
8
4
6
7
3
2
0.150
11
5
(3.81 )
C5
C4
C3
C2
1
C6
Dimension units are in inches.
Dimensions shown in parenthesis are in millimetres, converted from
inches and include minor round-off errors.
1.0000 inches = 25.40mm.
Dimensions ±0.005 (±0.13) unless otherwise stated.
Pad numbers for illustration purposes only.
Smallest pad 0.035" x 0.020" (pad 2)
Largest pad 0.043" x 0.028 (pad 8)
XXXXXX - work order number.
This hybrid is designed for point to point manual soldering
Fig. 15 Hybrid Layout and Dimensions
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 1992 Gennum Corporation.
All rights reserved.
7
Printed in Canada.
520 - 66 - 07