GENNUM GM3038

Programmable
DynamEQ®II - GM3038
DATA SHEET
DESCRIPTION
FEATURES
• five programmable parameters
• 24 dB/oct state variable filter
• twin average detectors
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.
• handles high input levels
• drives class D integrated receivers
The GM3038 features five programmable parameters:
independent compression ratio adjustment in the High and
Low frequency channels, threshold adjustment, crossover
frequency adjustment and MPO adjustment.
STANDARD PACKAGING
Hybrid typical dimensions:
0.250 in x 0.115 in x 0.120 in
(6.35 mm x 2.92 mm x 3.05 mm)
The ER102 controller memory chip is supported by a variety
of programmers available on the market.
The output stage is designed as a preamplifier for the class D
integrated receiver.
VB
1
C6
0µ22
VDD
C5
GM3038
10n
R6R
R5R
R5S
R5
VB
CSAD
18
7
CFAD
2
1M
1:1A
1:1B
1
1M
53.5kΩ
VREG 7
VREG 8
C1
0µ1
SLOW
AVERAGE
DETECTOR
REGULATOR
RTH 19
R3R
R6
1MΩ
6
R6S
4:1
RHI
5
4
ER102
600kΩ
RLO
3
85.6kΩ
FAST
AVERAGE
DETECTOR
CONTROL
1
RECTIFIER
X
VB
50k
R
R3
AGC_IN
48k
RH
150kΩ
C2
IN
11
6
10k
IN
0µ2
24 dB / Oct
BAND SPLIT
FILTER
-A
-B
-C
9
VSS
GND
AOUT
SDA 5
14
13
RFC
R4
SDA
FOUT
16
BIN
17
BOUT
R2
150kΩ
300kΩ
C3
R4R
OUT
15 MPO
14k
12
REC
2
0µ1
8k4
Low Frequency
Expander / Compressor
12k
10
20
48k
RL
GND 8
C4
OUT
High Frequency
Expander / Compressor
R2R
C7
0µ22
0µ1
4
BIN
Patent pending
All resistors in ohms, all capacitors in farads
unless otherwise stated.
3
BOUT
BLOCK DIAGRAM
Revision Date: August 1999
Document No. 521 - 62 - 04
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]
GM3038
The GM3038 programmable hybrid is composed of a
DynamEQ® II Wide Dynamic Range Compression signal
processor and the ER102 controller memory chip. The
hybrid incorporates 24 dB/oct filtering.
DynamEQ® II flexibility
•
ABSOLUTE MAXIMUM RATINGS
PAD CONNECTION
PARAMETER
VALUE / UNITS
Supply Voltage
Power Dissipation
GM3038
VB
GND
2VDC
25 mW
Operating Temperature Range
-10° C to 40° C
Storage Temperature Range
-20° C to 70° C
Voltage on SDA pad
OUT
VREG
BOUT
IN
16V
BIN
SDA
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
ELECTRICAL CHARACTERISTICS
Refer to ER102 Data Sheet for GM3038 communication and SDA pin Electrical Characteristics
Conditions: Supply Voltage VB = 1.3 V, Frequency = 1 kHz, Temperature = 25°C
The programmable parameters are adjusted to the following set values unless otherwise specified.
(MPO) R2 - set 0; (TH) R3 - set 15; (FC) R4 - set 7; (HP) R5 - set 0; (LP) R6 - set 0
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
µA
Hybrid Current
IAMP
-
370
530
Minimum Voltage
Vb
1.1
-
-
V
Total Harmonic Distortion
THD
VIN = -40dBV at 1kHz
-
0.6
1.25
%
THD with Maximum Allowable Input
THDM
VIN = -23dBV, Rvc = 47kΩ
-
2
10
%
-
3.0
-
µVRMS
Input Referred Noise
IRN
A Weighted Filter
Total System Gain
AV
VIN = -90dBV
46
49
52
dB
Regulator Voltage
VREG
ILOAD = 30µA
890
930
1000
mV
AGC
Lower Threshold
THLO
-91
-87
-83
dBV
Upper Threshold
THHI
-36
-32
-28
dBV
Compression Gain Range
∆A
Gain(-90dBVIN) -Gain(-30dBVIN)
37.5
40.5
43.5
dB
System Gain in Compression
A60
VIN =-60dBV
26
29
32
dB
0.9
1.0
1.1
Ratio
3.6
4.0
4.3
Ratio
Min. Compression Ratio
CMP1 :1
VIN=3kHz, -60dBV to -40dBV,
R5 - set 31; R6 - set 15
Max. Comp. Ratio
CMP4 :1
VIN =3kHz, -60dBV to -40dBV,
R5 - set 0;
R6 - set 0
Fast Detector Time Constant
τFAST
-
10
-
ms
Slow Detector Time Constant
τSLOW
-
220
-
ms
FILTER
Maximum Crossover Frequency
ƒc_0
R4 - set 0
3.0
3.9
-
kHz
Nominal Crossover Frequency
ƒc_22
R4 - set 7
1.38
1.8
2.18
kHz
Minimum Crossover Frequency
ƒc_220
R4 - set 13
-
0.9
1.4
kHz
-
24
-
Filter Rolloff Rate
521 - 62 - 04
2
dB/oct
ELECTRICAL CHARACTERISTICS continued
Refer to ER102 Data Sheet for GM3038 communication and SDA pin Electrical Characteristics
Conditions: Supply Voltage VB = 1.3 V, Frequency = 1 kHz, Temperature = 25°C
The programmable parameters are adjusted to the following set values unless otherwise specified. (MPO) R2 - set 0; (TH) R3 - set 15;
(FC) R4 - set 7; (HP) R5 - set 0; (LP) R6 - set 0
SYMBOL
CONDITIONS
MIN
TYP
MAX
-
-
-
STAGE A and B
UNITS
Open Loop Gain (B)
AOL_B
-
52
-
dB
Input Impedance (A)
RIN
9
11
13
kΩ
7
9
11
dB
-14.5
-12.5
-10.5
13
15
17
dB
-
24
-
kΩ
OUTPUT STAGE
Stage Gain
AC
Max Output Level
VIN=-30dBV
RVC=220kΩ,VIN=-25dBV
MPO
∆MPO
MPO Range
Output Resistance
R2 - set 0 to set 11
ROUT
dBV
All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in the CONDITIONS column.
VB
VB
1
VDD
C6
C5
0µ22
10n
GM3038
R6R
R5R
R5S
R5
VB
CSAD
18
7
CFAD
2
1M
1:1A
1:1B
1
1M
2µ2
VREG 8
C1
0µ1
SLOW
AVERAGE
DETECTOR
REGULATOR
RTH 19
CONTROL
R
R3
RHI
5
4
RLO
ER102
3
FAST
AVERAGE
DETECTOR
1
RECTIFIER
X
50k
R3R
4:1
600kΩ
85.6kΩ
53.5kΩ
7
R6
1MΩ
6
R6S
VB
AGC_IN
48k
RH
150kΩ
C2
3.9k
11
6
IN
0µ2
10k
24 dB / Oct
BAND SPLIT
FILTER
-A
OUT
High Frequency
Expander / Compressor
-B
-C
RL
8
9
VSS
GND
AOUT
SDA
5
Low Frequency
Expander / Compressor
12k
10
12
REC
14
13
RFC
R4
FOUT
R4R
2
0µ1
50k
48k
17
16
BIN
BOUT
R2
150kΩ
300kΩ
C3
C4
15 MPO
14k
SDA
R2R
C7
0µ22
0µ1
Table of Defaults
R2 - set 0
R3 - set 15
R4 - set 7
R5 - set 0
R6 - set 0
8k4
20
4
All resistors in ohms, all capacitors in farads unless otherwise stated
BIN
RVC
3
BOUT
100kΩ
Fig. 1 Production Test Circuit
3
521 - 62 - 04
GM3038
PARAMETER
VB
VB
1
VDD
C6
C5
0µ22
10n
GM3038
R6R
R5R
R5S
R5
VB
CSAD
18
7
CFAD
1:1A
2
1M
1:1B
1
1M
GM3038
VREG 8
7
C1
0µ1
SLOW
AVERAGE
DETECTOR
REGULATOR
RTH 19
Any
Knowles or
Microtronic
microphone
R
5
4
ER102
600kΩ
RLO
3
FAST
AVERAGE
DETECTOR
CONTROL
R3
4:1
RHI
85.6kΩ
1
RECTIFIER
X
50k
R3R
R6
1MΩ
6
53.5kΩ
VREG
R6S
AGC_IN
48k
RH
150kΩ
C2
IN
10k
11
6
OUT
High Frequency
Expander / Compressor
24 dB / Oct
BAND SPLIT
FILTER
-A
IN
0µ2
-B
-C
RL
GND
9
VSS
8
10
AOUT
13
RFC
SDA
5
17
16
BIN
BOUT
R2R
R2
150kΩ
300kΩ
R4R
C3
Any
Knowles
class D
integrated
receiver
2µ2
15 MPO
14
FOUT
R4
OUT
0µ1
48k
8k4
14k
12
REC
C4
2
20
Low Frequency
Expander / Compressor
12k
GND
SDA
VB
VB
C7
0µ22
0µ1
4
3
RVC BOUT
BIN
All resistors in ohms, all capacitors
in farads, unless otherwise stated
100kΩ LOG
Fig. 2 Typical Application Circuit
VB = 1.3V
VB
1
VDD
C6
C5
0µ22
10n
GM3038
R6R
R5R
R5S
R5
VB
CSAD
18
7
CFAD
2
1M
1:1A
1:1B
1
1M
53.5kΩ
7
2µ2
VREG 8
C1
0µ1
SLOW
AVERAGE
DETECTOR
REGULATOR
RTH 19
CONTROL
R
R3
VIN =
-80dBV
RHI
5
4
RLO
ER102
3
85.6kΩ
Table of Defaults
R2 - set 0
R3 - set 15
R4 - set 15
R5 - set 31
R6 - set 15
1
RECTIFIER
X
AGC_IN
11
6
10k
IN
24 dB / Oct
BAND SPLIT
FILTER
-A
OUT
High Frequency
Expander / Compressor
-B
-C
RL
Pink
Noise
Generator
8
9
VSS
GND
10
AOUT
5
12
REC
8k4
Low Frequency
Expander / Compressor
12k
14
R4
SDA
FOUT
R4R
0µ1
C7
4
BIN
RVC
100kΩ
4
50k
R2
150kΩ
Fig. 3 Characterization Circuit (Used to generate typical curves)
521 - 62 - 04
2
0µ1
48k
BOUT
0µ22
All resistors in ohms, all capacitors
in farads, unless otherwise stated
C4
17
16
BIN
300kΩ
C3
20
15 MPO
14k
13
RFC
VB
48k
RH
150kΩ
C2
0µ2
to programmer
4:1
600kΩ
FAST
AVERAGE
DETECTOR
50k
R3R
R6
1MΩ
6
R6S
3
BOUT
R2R
MICROPHONE
2µ2
RECEIVER
+
+
GM3038
TO PROGRAMMER
BATTERY
-
+
VOLUME
CONTROL
Fig. 4 Typical Assembly Diagram
TYPICAL PERFORMANCE CURVES
-20
ƒ = 1kHz
R4 - set 15
48
R5 - set 0
VIN = -80dBV
44
-30
36
GAIN (dB)
OUTPUT LEVEL (dBV)
40
-40
-50
R5 - set 31
-60
Used
Settings
0
9
12
14
-70
-80
-90
-100
16
17
18
19
20
21
23
24
26
28
30
31
32
28
24
20
16
12
8
4
0
-90
- 80
-70
-60
-50
-40
-30
0
-20
2
4
6
INPUT LEVEL (dBV)
8
10 12 14 16 18 20 22 24 26 28 30 31
R5 RESISTOR SET ON ER102 DIE
(set 0 - short, set 31- open)
Fig. 5 I/O Transfer Function for Different Compression Ratios
Fig. 6 High Frequency Gain (Compression Ratio Adjustment)
(High Frequency Channel)
-20
ƒ = 1kHz
R4 - set 0
48
R6 - set 0
VIN = -80dBV
44
-30
36
-40
GAIN (dB)
OUTPUT LEVEL (dBV)
40
-50
-60
R6 - set 15
32
28
24
20
16
-70
12
8
-80
4
-90
-100
0
-90
-80
-70
-60
-50
-40
-30
-20
0
1
2
3
4
5
6
7
8
9
10 11 12 13
14
15
R6 RESISTOR SET ON ER102 DIE
INPUT LEVEL (dBV)
(set 0 - short, set 15- open)
Fig. 7 I/O Transfer Function for Different Compression Ratios
Fig. 8 Low Frequency Gain (Compression Ratio Adjustment)
(Low Frequency Channel)
5
521 - 62 - 04
50
50
R6 - SET 0
VIN = -80 dBV
R5 - SET 0
VIN = -80 dBV
R4 - SET 0
40
40
GAIN (dB)
GAIN (dB)
30
R4 - SET 15
20
10
30
R4 - SET 15
20
10
0
0
20
100
1k
10k
20k
20
100
1k
FREQUENCY (kHz)
20k
Fig. 10 Frequency Response for Different
Crossover Frequency Steps
50
10k
CROSSOVER FREQUENCY (kHz)
VIN = -80 dBV
40
GAIN (dB)
10k
FREQUENCY (kHz)
Fig. 9 Frequency Response for Different
Crossover Frequency Steps
R6 - SET 0
R4 - set 13
30
20
R5 - SET 0
R4 - SET 13
10
0
20
100
1k
10k
VIN = -80dBV
1k
500
20k
0
1
2
3
ƒ = 1kHz
R3 - SET 15
R3 - SET 0
-50
-60
-70
-100
-90
-80
6
7
8
9
10
11 12
13 14 15
Fig. 12 Crossover Frequency Adjustment
OUTPUT THRESHOLD LEVEL (dBV)
-40
R5 - SET 0
R6 - SET 0
5
(set 0 - short, set 15 - open)
Fig. 11 Crossover Frequency
Representation for Step 13
-30
4
R4 RESISTOR SET ON ER102 DIE
FREQUENCY (kHz)
OUTPUT LEVEL (dBV)
GM3038
R4 - SET 0
-70
-60
-62
-64
-66
-68
-70
-72
-74
-76
-78
-80
-82
-84
-86
-88
-90
0
-60
1
2
3
4
5
6
7
8
9
10
11 12
INPUT LEVEL (dBV)
R3 RESISTOR SET ON ER102 DIE
Fig. 13 I/O Transfer Function for Different Threshold Steps
Fig. 14 Threshold Adjustment
521 - 62 - 04
(set 0 - short, set 15 - open)
6
13 14 15
-10
-10
R2 - SET 0
VIN -22 dBV
OUTPUT LEVEL (dBV)
-20
-30
R2 - SET 11
-40
-14
-16
-18
-20
GM3038
OUTPUT LEVEL (dBV)
-12
-22
-24
-26
-28
-30
-50
-50
-40
-30
0
-20
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15
R2 RESISTOR SET ON ER102 DIE
INPUT LEVEL (dBV)
(set 0 - short, set 11 -51 kΩ)
Fig. 15 I/O Transfer Function for Different MPO Steps
Fig. 16 MPO Adjustment
10
10
VIN = -40 dBV
THD & NOISE (%)
THD & NOISE (%)
ƒ = 1 kHz
1
0.1
1.0
0.1
0.1k
1.0k
-80
10k
-70
-60
-50
-40
-30
-20
FREQUENCY (kHz)
INPUT LEVEL (dBV)
Fig. 17 THD and Noise vs Frequency
Fig. 18 THD and Noise vs Input Level
10
10
VIN = -40 dBV
∆ ƒ = 200 Hz
ƒ = 4 kHz
∆ƒ = 200 Hz
IMD (%)
IMD (%)
1.0
1.0
0.1
0.01
-80
0.1
3k
10k
100k
-70
-60
-50
- 40
- 30
-20
FREQUENCY (kHz)
INPUT LEVEL (dBV)
Fig. 19 Intermodulation Distortion (CCIF) vs Frequency
Fig. 20 Intermodulation Distortion (CCIF) vs Input Level
7
521 - 62 - 04
PACKAGE DIMENSIONS
60
RVC=220k
50
0.250 (6.35)
RVC=100k
XXXXXX
GAIN (dB)
RVC=22k
30
GM3038
GM3038
RVC=47k
40
RVC=10k
20
10
20
100
1k
10k
20k
FREQUENCY (kHz)
Fig. 21 Frequency Response for Different RVC Values
0.130 MAX
(3.30)
0.115
(2.92)
Dimensions are in inches.
Dimensions in parenthesis are in millimetres converted from inches
and include minor rounding errors.
1.0000 inches = 25.400 mm.
Dimension tolerances ± 0.003 (± 0.08) unless otherwise stated.
XXXXXX - work order number.
This hybrid is designed for point-to-point manual soldering.
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.
GENNUM CORPORATION
MAILING ADDRESS:
P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax +1 (905) 632-2814
SHIPPING ADDRESS:
970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
REVISION NOTES:
Added maximum voltage on SDA pad.
Change to max. supply voltage.
GENNUM JAPAN CORPORATION
C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081,
Japan
Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839
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 April 1996 Gennum Corporation.
All rights reserved.
521 - 62 - 04
8
Printed in Canada.