Gennum Corporation GM3036 Datasheet

V

B

OUT

V

REG

IN

GND

SDA

B

OUT

B

IN

0µ1

0µ2

C1

GM3036

C2

C4

C3

0µ1

0µ1

0µ1

0µ2

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

R

L

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

500k200k

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. [phone]

Web Site: www.gennum.com E-mail: [e-mail]

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 µA

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 = 47kΩ -210%

Input Referred Noise IRN Aweighted filter - 3.0 - µV

RMS

Total System Gain A

V

V

IN

= -90dBV 45 48 51 dB

Regulator Voltage V

REG

I

LOAD

= 30µA 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(-90dBVIN) -Gain(-30dBVIN) 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

VIN=3kHz, -60dBV to -40dBV,
R3 - Tap 15; R6 - Tap 15 0.9 1.0 1.1 Ratio

Max. Comp. Ratio CMP

4 :1

VIN =3kHz, -60dBV to -40dBV,
R3 - Tap 0; R6 - Tap 0 3.6 4.0 4.3 Ratio

Fast Average Detector Time Constant τ

FAST

-10-ms

Slow Average Detector Time Constant τ

SLOW

-200-ms

FILTER

Maximum Crossover Frequency ƒ

c_max

R1 - Tap 15 3.0 3.9 - kHz

Nominal Crossover Frequency ƒ

c_nom

R1 - Tap 8 1.5 1.9 2.3 kHz

Minimum Crossover Frequency ƒ

c_min

R1 - Tap 0 - 0.9 1.4 kHz

Filter Rolloff Rate - 24 - dB/oct

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) 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 kΩ

OUTPUT STAGE

Stage Gain A

C

VIN=-30dBV 7 9 11 dB

Max Output Level MPO VIN=-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-kΩ

ELECTRICAL CHARACTERISTICS continued

Conditions: Supply Voltage VB = 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

0µ1

0µ2

C1

GM3036

C2

C4

C3

0µ1

0µ1

0µ1

0µ2

2µ2

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

R

L

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.