FEATURES
handles high input levels (up to 100 mV
RMS)
cleanly
low THD and IMD distortion
unique twin average detectors
dual channel signal processing
adjustable AGC threshold levels
highpass filter with adjustable corner frequency
2:1 compression of high frequencies
no external capacitors or resistors required
STANDARD PACKAGING
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)
DynamEQ
I
Dynamic Equalizer
GS3011 - HYB DATA SHEET
4
5
10
- C
11
D
+
-
+
-
24k
0.92V
8
GND
VB
V
REG
7
C1
2
2
C7
2
2
C6
0
1
R7
100k
R6
100K
15
1
14
16
2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
3
8
5
17
R
TH
R1
68k
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
9
12
C4
0
1
GS3011
R
E
340
C
HP
D
OUT
11
3
A
IN
9
MGND
10
VC2
VC1
C5
0
1
R4
50k
R5 50k
R3
50k
12k
R2
50k
C3
0
1
C2
3n9
- A
- B
13
6
2
4
1
7
6
11
RECTIFIER
VB
GC514
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
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.
DynamEQ
I has two signal paths for dual channel
processing incorporating 4 amplifying stages ( A, B,
C, D ) and the AGC processing circuit.
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.
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: hipinfo@gennum.com
520 - 66 - 07
2
CAUTION
CLASS 1 ESD SENSITIVITY
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
PAD CONNECTION
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Hybrid Current
I
AMP
V
IN
= 0 V
RMS
120
230
330
A
Minimum Voltage
V
B
1.1
-
-
V
Total Harmonic Distortion
THD
R
VC
= 15 k
; V
IN
= -40 dBV
-
0.2
1
%
Input Referred Noise
IRN
NFB 0.2 to 10 kHz at 12 dB/oct
-
2.5
-
V
RMS
Total System Gain
A
V
51
54
57
dB
AGC
Compression Ratio
COMP
V
IN
= -70 dBV and -80 dBV
1.74:1
1.95:1
2.11:1
Ratio
Threshold
-
-94
-
dBV
Compression Gain Range
A
RANGE
R
VC
= 15 k
; Note 1
26
27
-
dB
High Pass Corner Frequency
HPC
-
3.4
-
kHz
System Gain in Compression
A
80
V
IN
= -80dBV, R
VC
= 15 k
28
30
32
dB
OUTPUT STAGE
Minimum Transducer Current
I
TR
130
160
190
A
Maximum Current Sink
I
SINK
3
9
-
mA
Output Impedance
Z
OUT
20
24
28
k
R
E
Voltage
V
RE
48
52
56
mV
REGULATOR
Regulator Voltage
V
REG
0.89
0.92
0.97
V
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)
Conditions: Input Level V
IN
= -97 dBV, Frequency = 5 kHz, Temperature = 25
C, Supply Voltage V
B
= 1.3 V
ELECTRICAL CHARACTERISTICS
Notes:
1.
A
RANGE
= V
P10
[V
IN
= -97 dBV] - V
P10
[V
IN
= -20 dBV] + 77 dBV
GND
MGND
A IN
VREG
C
HP
C IN
C OUT
V
B
R
E
D OUT
R
TH
1
2
3
4
5
9
10
8
7
6
11
520 - 66 - 07
3
4
5
10
- C
11
D
+
-
+
-
24k
0.92V
8
GC514
7
C1
22
C7
22
C6
01
R7
100k
R6
100k
15
1
14
16
2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
3
8
5
17
R1
68k
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
9
12
C4
01
GS3011
R
E
100
340
11
3
9
10
100K
R
VC
C5
01
R4
50k
R5 50k
R3
50k
12k
R2
50k
C3
01
C2
3n9
- A
- B
13
6
2
4
1
7
6
RECTIFIER
VB
V
B
EK3024
ED1913
4
5
10
- C
11
D
+
-
+
-
24k
0.92V
8
GC514
VB
7
C1
22
C7
22
C6
01
R7
100k
R6
100k
15
1
14
16
2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
3
8
5
17
R1
68k
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
9
12
C4
01
GS3011
R
E
100
340
R
LOAD
11
3
V
IN
9
3k9
10
100K
R
VC
C5
01
R4
50k
R5 50k
R3
50k
12k
R2
50k
C3
01
C2
3n9
- A
- B
13
6
2
4
1
7
6
RECTIFIER
VB
1k
V
B
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig.1 Production Test Circuit
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig. 2 Typical Hearing Instrument Application
520 - 66 - 07
4
4
5
10
- C
11
D
+
-
+
-
24k
11
0.92V
8
GC514
VB
7
C1
22
C7
22
C6
01
R7
100k
R6
100k
15
1
14
16
2
REGULATOR
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
3
8
5
17
CURRENT
REFERENCE
2:1
COMPRESSION
CONTROL
9
12
C4
01
GS3011
340
11
3
V IN
9
3k9
10
15K
R
VC
C5
01
R4
50k
R5 50k
R3
50k
12k
R2
50k
C3
01
C2
3n9
- A
- B
13
6
2
1
7
6
R1
68k
RECTIFIER
2xV
B
=2.6V
R
E
100
VB
R
TH
=
C
HP
(Normally not
connected)
4
1k82
All resistors in ohms, all capacitors in farads unless otherwise stated.
MIC
+
REC
+
+
-
VOLUME
CONTROL
1 5 11
2
3
4 6 7 8 9 10
BAT
ED1913
EK3024
100
Fig. 3 Typical Hearing Instrument Assembly Diagram
Fig. 4 Characterization Circuit (used to generate typical curves)
(Equivalent RMS pink noise used as V
IN
for all frequency responses)
520 - 66 - 07
5
20 100 1k 10k 20k
FREQUENCY (Hz)
Fig. 5 Frequency Response for Different Input Levels
V
IN
= -50dBV
FREQUENCY (Hz)
Fig. 7 Frequency Response for Different R
VC
Values
20 100 1k 10k 20k
-100 -90 -80 -70 -60 -50 - 40 -30 -20
INPUT LEVEL (dBV)
Fig. 9 I/O Transfer Function for Different R
TH
Resistors
R
TH
=
= 100k
= 47k
= 22k
= 0
V
IN
=-96dBV
20
100
1k 10k 20k
FREQUENCY (Hz)
Fig. 10 Frequency Characteristics for Different
R
TH
Values
0
-10
-20
-30
-40
-50
-60
-70
-80
-100 -90 -80 -70 -60 -50 - 40 -30 -20
INPUT LEVEL (dBV)
Fig. 6 I/O Transfer Function for Different Test
Frequencies. Shown for Min/Max R
TH
Resistors Values
50
40
30
20
10
0
5kHz
2kHz
1kHz
V
IN
= -50dBV
V
IN
= -70dBV
V
IN
= -90dBV
V
IN
= -96dBV
V
IN
= -30dBV
V
IN
= -20dBV
R
TH
=
R
TH
= 0
R
VC
=100 k
R
VC
=47 k
R
VC
=22 k
R
VC
=15 k
= 1kHz
C
HP
=68 nF
C
HP
=33nF
C
HP
=10nF
C
HP
=0.1
F
V
IN
=-20dBV
R
TH
= 0
22k
47k
100k
R
TH
=
V
IN
=-96dBV
No Capacitance
50
40
30
20
10
0
50
40
30
20
10
0
50
40
30
20
10
0
5kHz
2kHz
1kHz
0
-10
-20
-30
-40
-50
-60
-70
-80
20
100
1k
10k 20k
FREQUENCY (Hz)
Fig. 8 Corner Frequency vs C
HP
Capacitor Value
OUTPUT LEVEL (dBV)
GAIN (dB)
OUTPUT LEVEL (dBV)
GAIN (dB)
GAIN (dB)
GAIN (dB)
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