V
B
OUT
V
REG
IN
GND
SDA
B
OUT
B
IN
0
1
0
2
C1
GM3036
C2
C4
C3
0
1
0
1
0
1
0
2
10n
R2
49k5
R3
R4
R6
R5
PGI
1
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
1
X
- B
- A
- C
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
RL
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
REG
IN
GND
2
3
4
5
6
7
8
R1
R7
C5
C6
C7
69k5
100k
200k
200k
500k
200k
DATA SHEET
GM3036 Programmable
DynamEQ
II
Hybrid
FEATURES
DynamEQ
II flexibility
six programmable parameters
24 dB/oct state variable filter
twin average detectors
handles high input levels
drives class D integrated receivers
STANDARD PACKAGING
Hybrid typical dimensions:
0.209 in x 0.125 in x 0.100 in
(5.31 mm x 3.18 mm x 2.54 mm)
DESCRIPTION
The GM3036 programmable hybrid is composed of a
DynamEQ
II Wide Dynamic Range Compression signal
processor and the GP522 controller memory chip. The
hybrid incorporates 24 dB/oct filtering.
The gain and frequency response are dependent on the user's
environment. The Twin Average Detector circuit is optimized
for sound quality during normal listening without sacrificing
comfort during sudden loud sounds.
The GM3036 features six programmable parameters:
independent compression ratio adjustment in the High and
Low frequency channels, VC adjustment, threshold
adjustment, crossover frequency adjustment and MPO
adjustment.
The output stage is designed as a preamplifier for the class D
integrated receiver.
BLOCK DIAGRAM
All resistors in ohms, all capacitors in farads unless otherwise stated.
* patent pending
Revision Date: September 2000
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
Document No. 521 - 74 - 05
GM3036
2
521 - 74 - 05
GM3036
SDA
V
B
OUT
B
OUT
B
IN
GND
V
REG
1
2
3
4
5
6
7
8
IN
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE
Supply Voltage
1.4VDC
Power Dissipation
25mW
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
-
395
580
A
Minimum Voltage
Vb
1.1
-
-
V
Total Harmonic Distortion
THD
V
IN
= -40dBV at 1kHz
-
0.6
1.0
%
THD with Maximum Allowable Input
THD
M
V
IN
= -23dBV, Rvc = 47k
-
2
10
%
Input Referred Noise
IRN
Aweighted filter
-
3.0
-
V
RMS
Total System Gain
A
V
V
IN
= -90dBV
45
48
51
dB
Regulator Voltage
V
REG
I
LOAD
= 30
A
890
930
1000
mV
AGC
Lower Threshold
TH
LO
-88.5
-84.5
-80.5
dBV
Upper Threshold
TH
HI
-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
A
60
V
IN
=-60dBV
26
29
32
dB
Min. Compression Ratio
CMP
1 :1
V
IN
=3kHz, -60dBV to -40dBV,
R3 -
Tap
15; R6 -
Tap
15
0.9
1.0
1.1
Ratio
Max. Comp. Ratio
CMP
4 :1
V
IN
=3kHz, -60dBV to -40dBV,
R3 -
Tap
0; R6 -
Tap
0
3.6
4.0
4.3
Ratio
Fast Average Detector Time Constant
FAST
-
10
-
ms
Slow Average Detector Time Constant
SLOW
-
200
-
ms
FILTER
Maximum Crossover Frequency
c_max
R1 -
Tap
15
3.0
3.9
-
kHz
Nominal Crossover Frequency
c_nom
R1 -
Tap
8
1.5
1.9
2.3
kHz
Minimum Crossover Frequency
c_min
R1 -
Tap
0
-
0.9
1.4
kHz
Filter Rolloff Rate
-
24
-
dB/oct
Conditions: Supply Voltage V
B
= 1.3 V, Frequency = 1 kHz, Temperature = 25
C.
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R5 - Tap15; (TH) R2 - Tap 0; (FC) R1 - Tap 8; (HP) R6 - Tap 0; (LP) R3 - Tap 0; (VC) R4 - Tap 0, R7 - Tap 0.
3
521 - 74 - 05
GM3036
Fig. 1 Test Circuit
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
STAGE A and B
-
-
-
Open Loop Gain (B)
A
OL_B
-
52
-
dB
Input Impedance (A)
R
IN
8
10.6
12
k
OUTPUT STAGE
Stage Gain
A
C
V
IN
=-30dBV
7
9
11
dB
Max Output Level
MPO
V
IN
=-25dBV, R
VCEXT
=221k
-20
-18
-16
dBV
MPO Range
MPO
R5 -
Tap
15 to
Tap
0, R
VCEXT
=221k
11.6
13.6
15.6
dB
Output Resistance
R
OUT
-
24
-
k
ELECTRICAL CHARACTERISTICS continued
Conditions: Supply Voltage V
B
= 1.3V, Frequency = 1kHz, Temperature = 25
C
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R5 - Tap 15; (TH) R2 - Tap 0; (FC) R1 - Tap 8; (HP) R6 - Tap 0; (LP) R3 - Tap 0; (VC) R4 - Tap 0, R7 - Tap 0.
All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in the CONDITIONS column.
7
50k
0
1
0
2
C1
GM3036
C2
C4
C3
0
1
0
1
0
1
0
2
2
2
10n
R2
49k5
R3
R4
R6
R5
PGI
1
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
3k9
1
X
- B
- A
- C
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
RL
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
R
VC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
B
V
REG
IN
GND
2
3
4
5
6
7
8
R1
R7
C5
C6
C7
69k5
100k
200k
200k
500k
200k
116k
All resistors in ohms,
all capacitors in microfarads,
unless otherwise stated.
4
521 - 74 - 05
GM3036
Fig. 3 Characterization Circuit (Used to generate typical curves)
Fig. 2 Typical Application Circuit
V
B
R
VC
100k LOG
V
B
Any
Knowles or
Microtronic
microphone
Any
Knowles
class D
integrated
receiver
OUT
0
1
0
2
C1
GM3036
C2
C4
C3
0
1
0
1
0
1
0
2
10n
R2
49k5
R3
R4
R6
R5
PGI
1
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
1
X
- B
- A
- C
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
RL
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
REG
IN
GND
2
3
4
5
7
8
R1
R7
C5
C6
C7
69k5
100k
200k
200k
500k
200k
6
2
2
All resistors in ohms,
all capacitors in microfarads,
unless otherwise stated.
2
2
V
B
= 1.3V
50k
to
programmer
Pink
Noise
Generator
V
IN
=
-80dBV
0
1
0
2
C1
GM3036
C2
C4
C3
0
1
0
1
0
1
0
2
10n
R2
49k5
R3
R4
R6
R5
PGI
SLOW
AVERAGE
DETECTOR
FAST
AVERAGE
DETECTOR
CONTROL
10k
RECTIFIER
V
B
3k3
REGULATOR
48k
48k
11k
1M
2M
13k1
12k
1
X
- B
- A
- C
24 dB / Oct
BAND SPLIT
FILTER
High Frequency
Expander / Compressor
Low Frequency
Expander / Compressor
R
AGC_IN
R
H
RL
R
LO
R
HI
4:1
1:1
C
SAD
MPO
R
TH
B
OUT
B
IN
R
FC
F
OUT
A
OUT
REC
OUT
C
FAD
V
BAT
V
REG
IN
GND
2
3
4
5
6
7
8
R1
R7
C5
C6
C7
69k5
100k
200k
200k
500k
200k
1
All resistors in ohms,
all capacitors in microfarads,
unless otherwise stated.
TABLE OF DEFAULTS
R1 - Tap 8
R2 - Tap 0
R3 - Tap 0
R4 - Tap 2
R5 - Tap 15
R6 - Tap 0
R7 - Tap 23
5
521 - 74 - 05
GM3036
0
4
8
12
16
20
24
28
32
36
40
44
48
50
0
1
2 3 4 5
6
7
8
9
10
11 12
13 14 15
GAIN (dB)
R3 RESISTOR TAPS
(Tap 0 - 0k
, Tap 15 - 200k
)
V
IN
= -80dBV
-90
-80
-70
-60
-50
-40
-30
-20
-100
-90
-80
-70 -60 -50 -40 -30
-20
INPUT LEVEL (dBV)
OUTPUT LEVEL (dBV)
R3 - Tap 0
R3 - Tap 15
= 1 kHz
R1 - Tap 15
0
1
2
3
4
5
6
7
8
9
10 11 12
13 14
15
GAIN (dB)
R6 RESISTOR TAPS
(Tap 0 - 0k
, Tap 15 - 200k
)
V
IN
= -80dBV
50
48
44
40
36
32
28
24
20
16
12
8
4
0
Fig. 4 Typical Assembly Diagram
Fig. 5 I/O Transfer Function for Different
Compression Ratios (High Frequency Channel)
Fig. 6 High Frequency Gain
(Compression Ratio Adjustment)
Fig. 7 I/O Transfer Function for Different
Compression Ratios (Low Frequency Channel)
Fig. 8 Low Frequency Gain
(Compression Ratio Adjustment)
-90
-80
-70
-60
-50
-40
-30
-20
-100
-90
-80
-70
-60
-50
-40
-30
-20
OUTPUT LEVEL (dBV)
INPUT LEVEL (dBV)
R6 - Tap 0
R6 - Tap 15
= 4 kHz
R1 - Tap 0
TYPICAL PERFORMANCE CURVES
SDA
V
B
OUT
B
OUT
B
IN
C2
C1
C3
C4
C5
C7
C6
IN
GND
V
REG
1
2
3
4
5
6
7
8
+
MICROPHONE
+
RECEIVER
BATTERY
+
-
Back view of
Microtronic socket
2
2
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