GM3038 GENNUM | Alldatasheet

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Technical content

DynamEQ®II - GM3038

FEATURES

  • DynamEQ® II flexibility
  • five 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: 0.250 in x 0.115 in x 0.120 in (6.35 mm x 2.92 mm x 3.05 mm)

DESCRIPTION

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. 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 GM3038 features five programmable parameters: independent compression ratio adjustment in the High and Low frequency channels, threshold adjustment, crossover frequency adjustment and MPO adjustment. 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. BLOCK DIAGRAM VB OUT VREG IN GND SDA BOUTBIN 0µ22 0µ22 GM3038 C6 C5 C3 C7 0µ1 0µ1 0µ10µ2 10n 150kΩ 150kΩ 300kΩ ER102R6 600kΩ 1MΩ R2R VSS SDA R3R R4R R5S R5R R6SR6RVDD SLOW AVERAGE DETECTOR FAST AVERAGE DETECTOR CONTROL 10k RECTIFIER VB50k REGULATOR 48k 48k 8k4 1M1M 14k 12k X - B- A - C24 dB / Oct BAND SPLIT FILTER High Frequency Expander / Compressor Low Frequency Expander / Compressor RAGC_IN RH RL 53.5kΩ 85.6kΩ RLORHI4:11:1ACSAD MPO RTH BOUTBINRFC FOUTAOUT REC OUT 1:1BCFADVB VREG IN GND 12 34567 12 13 14 16 17 All resistors in ohms, all capacitors in farads unless otherwise stated. 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: hipinfo@gennum.com GM3038

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Hybrid Current IAMP - 370 530 µA Minimum Voltage Vb 1.1 - - V Total Harmonic Distortion THD V IN = -40dBV at 1kHz - 0.6 1.25 % THD with Maximum Allowable Input THD M VIN = -23dBV, Rvc = 47kΩ -2 1 0 % Input Referred Noise IRN A Weighted Filter - 3.0 - µVRMS Total System Gain A V VIN = -90dBV 46 49 52 dB Regulator Voltage V REG ILOAD = 30µA 890 930 1000 mV AGC Lower Threshold TH LO -91 -87 -83 dBV Upper Threshold TH HI -36 -32 -28 dBV Compression Gain Range ΔA Gain(-90dBV IN) -Gain(-30dBVIN) 37.5 40.5 43.5 dB System Gain in Compression A 60 VIN =-60dBV 26 29 32 dB Min. Compression Ratio CMP 1 :1 VIN=3kHz, -60dBV to -40dBV, R5 - set 31; R6 - set 15 0.9 1.0 1.1 Ratio Max. Comp. Ratio CMP 4 :1 VIN =3kHz, -60dBV to -40dBV, R5 - set 0; R6 - set 0 3.6 4.0 4.3 Ratio Fast Detector Time Constant τFAST -1 0-m s Slow Detector Time Constant τSLOW - 220 - ms FILTER Maximum Crossover Frequency ƒ c_0 R4 - set 0 3.0 3.9 - kHz Nominal Crossover Frequency ƒ c_22 R4 - set 7 1.38 1.8 2.18 kHz Minimum Crossover Frequency ƒ c_220 R4 - set 13 - 0.9 1.4 kHz Filter Rolloff Rate - 24 - dB/oct Refer to ER102 Data Sheet for GM3038 communication and SDA pin Electrical Characteristics 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) R2 - set 0; (TH) R3 - set 15; (FC) R4 - set 7; (HP) R5 - set 0; (LP) R6 - set 0

ELECTRICAL CHARACTERISTICS

Operating Temperature Range -10 ° C to 40° C Storage Temperature Range -20 ° C to 70° C Voltage on SDA pad 16V PAD CONNECTION VB OUT BOUT BIN GND V REG IN SDA CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION

3.9k 2µ2 RVC 100kΩ VB SDA BOUTBIN 0µ22 0µ22 C6 C5 GM3038 C3 C7 0µ1 0µ1 0µ1 0µ2 10n 150kΩ 150kΩ 300kΩ ER102R6 600kΩ 1MΩ R2R VSS SDA R3R R4R R5S R5R R6SR6RVDD SLOW AVERAGE DETECTOR FAST AVERAGE DETECTOR CONTROL 10k RECTIFIER VB50k REGULATOR 48k 48k 8k4 1M1M 14k 12k X - B- A - C24 dB / Oct BAND SPLIT FILTER High Frequency Expander / Compressor Low Frequency Expander / Compressor RAGC_IN RH RL 53.5kΩ 85.6kΩ RLORHI4:11:1ACSAD MPO RTH BOUTBINRFC FOUTAOUT REC OUT 1:1BCFADVB VREG IN GND 12 34567 12 13 14 16 17 VB 50k All resistors in ohms, all capacitors in farads unless otherwise stated Fig. 1 Production Test Circuit PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS STAGE A and B --- Open Loop Gain (B) A OL_B -5 2-d B Input Impedance (A) R IN 91 1 1 3 k Ω OUTPUT STAGE Stage Gain A C VIN=-30dBV 7 9 11 dB Max Output Level MPO R VC=220kΩ ,VIN=-25dBV -14.5 -12.5 -10.5 dBV MPO Range ΔMPO R2 - set 0 to set 11 13 15 17 dB Output Resistance R OUT -2 4-k Ω ELECTRICAL CHARACTERISTICS continued Table of Defaults R2 - set 0 R3 - set 15 R4 - set 7 R5 - set 0 R6 - set 0 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 All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in the CONDITIONS column.

100kΩ VB BOUTBIN 0µ22 0µ22 C6 C5 GM3038 C3 C7 0µ1 0µ1 0µ1 0µ2 10n 150kΩ 150kΩ 300kΩ ER102R6 600kΩ 1MΩ R2R VSS SDA R3R R4R R5S R5R R6SR6RVDD SLOW AVERAGE DETECTOR FAST AVERAGE DETECTOR CONTROL 10k RECTIFIER VB50k REGULATOR 48k 48k 8k4 1M1M 14k 12k X - B- A - C24 dB / Oct BAND SPLIT FILTER High Frequency Expander / Compressor Low Frequency Expander / Compressor RAGC_IN RH RL 53.5kΩ 85.6kΩ RLORHI4:11:1ACSAD MPO RTH BOUTBINRFC FOUTAOUT REC OUT 1:1BCFADVB VREG IN GND 12 34567 12 13 14 16 17 VB = 1.3V 2µ2 50k to programmer Pink Noise Generator VIN = -80dBV VB RVC 2µ2 100kΩ LOG VB OUT VREG IN GND SDA BOUTBIN 0µ22 0µ22 C6 C5 GM3038 C3 C7 0µ1 0µ1 0µ1 0µ2 10n 150kΩ 150kΩ 300kΩ ER102R6 600kΩ 1MΩ R2R VSS SDA R3R R4R R5S R5R R6SR6RVDD SLOW AVERAGE DETECTOR FAST AVERAGE DETECTOR CONTROL 10k RECTIFIER VB50k REGULATOR 48k 48k 8k4 1M1M 14k 12k X - B- A - C24 dB / Oct BAND SPLIT FILTER High Frequency Expander / Compressor Low Frequency Expander / Compressor RAGC_IN RH RL 53.5kΩ 85.6kΩ RLORHI4:11:1ACSAD MPO RTH BOUTBINRFC FOUTAOUT REC OUT 1:1BCFADVB VREG IN GND 12 34567 12 13 14 16 17 VB Any Knowles or Microtronic microphone Any Knowles class D integrated receiver Fig. 3 Characterization Circuit (Used to generate typical curves) All resistors in ohms, all capacitors in farads, unless otherwise stated Fig. 2 Typical Application Circuit All resistors in ohms, all capacitors in farads, unless otherwise stated Table of Defaults R2 - set 0 R3 - set 15 R4 - set 15 R5 - set 31 R6 - set 15

TYPICAL PERFORMANCE CURVES OUTPUT LEVEL (dBV) -20 -30 -40 -50 -60 -70 -80 -90 -100 -90 - 80 -70 -60 -50 -40 -30 -20 INPUT LEVEL (dBV) Fig. 5 I/O Transfer Function for Different Compression Ratios (High Frequency Channel) GAIN (dB) 0 2 4 6 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. 6 High Frequency Gain (Compression Ratio Adjustment) -100 -90 -80 -70 -60 -50 -40 -30 -20 INPUT LEVEL (dBV) Fig. 7 I/O Transfer Function for Different Compression Ratios (Low Frequency Channel) GAIN (dB) VIN = -80dBV -20 -30 -40 -50 -60 -70 -80 -90 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 R6 RESISTOR SET ON ER102 DIE (set 0 - short, set 15- open) Fig. 8 Low Frequency Gain (Compression Ratio Adjustment) R5 - set 0 Fig. 4 Typical Assembly Diagram Used Settings VIN = -80dBV R6 - set 0 R6 - set 15 OUTPUT LEVEL (dBV) R5 - set 31 MICROPHONE TO PROGRAMMER RECEIVER BATTERY 2µ2 VOLUME CONTROL ƒ = 1kHz ƒ = 1kHz R4 - set 15 R4 - set 0

GAIN (dB) 20 100 1k 10k 20k FREQUENCY (kHz) Fig. 9 Frequency Response for Different Crossover Frequency Steps R6 - SET 0 R4 - SET 0 R4 - SET 15 GAIN (dB) FREQUENCY (kHz) R5 - SET 0 R4 - SET 0 R4 - SET 15 Fig. 10 Frequency Response for Different Crossover Frequency Steps 20 100 1k 10k 20k GAIN (dB) 20 100 1k 10k 20k FREQUENCY (kHz) Fig. 11 Crossover Frequency Representation for Step 13 VIN = -80 dBV R5 - SET 0 R4 - SET 13 10k 500 CROSSOVER FREQUENCY (kHz) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 R4 RESISTOR SET ON ER102 DIE (set 0 - short, set 15 - open) Fig. 12 Crossover Frequency Adjustment VIN = -80dBV -30 -40 -50 -60 -70 -100 -90 -80 -70 -60 INPUT LEVEL (dBV) Fig. 13 I/O Transfer Function for Different Threshold Steps OUTPUT LEVEL (dBV) R5 - SET 0 ƒ = 1kHz R6 - SET 0 R3 - SET 15 R3 - SET 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 R3 RESISTOR SET ON ER102 DIE (set 0 - short, set 15 - open) Fig. 14 Threshold Adjustment -60 -62 -64 -66 -68 -70 -72 -74 -76 -78 -80 -82 -84 -86 -88 -90 OUTPUT THRESHOLD LEVEL (dBV) VIN = -80 dBV VIN = -80 dBV R6 - SET 0 R4 - set 13

-10 -12 -14 -16 -18 -20 -22 -24 -26 -28 -30 OUTPUT LEVEL (dBV) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 R2 RESISTOR SET ON ER102 DIE (set 0 - short, set 11 -51 kΩ ) -10 -20 -30 -40 -50 OUTPUT LEVEL (dBV) -50 -40 -30 -20 INPUT LEVEL (dBV) Fig. 15 I/O Transfer Function for Different MPO Steps R2 - SET 0 R2 - SET 11 Fig. 16 MPO Adjustment 0.1 THD & NOISE (%) 0.1k 1.0k 10k FREQUENCY (kHz) Fig. 17 THD and Noise vs Frequency VIN = -40 dBV 1.0 0.1 THD & NOISE (%) INPUT LEVEL (dBV) Fig. 18 THD and Noise vs Input Level ƒ = 1 kHz 1.0 0.1 3k 10k 100k FREQUENCY (kHz) Fig. 19 Intermodulation Distortion (CCIF) vs Frequency IMD (%) VIN = -40 dBV Δ ƒ = 200 Hz -80 -70 -60 -50 - 40 - 30 -20 ƒ = 4 kHz Δƒ = 200 Hz 1.0 0.1 0.01 IMD (%) INPUT LEVEL (dBV) Fig. 20 Intermodulation Distortion (CCIF) vs Input Level VIN -22 dBV

0.250 (6.35) 0.115 (2.92)

0.130 MAX

(3.30) 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. 20 100 1k 10k 20k RVC=220k GAIN (dB) FREQUENCY (kHz) Fig. 21 Frequency Response for Different RVC Values RVC=100k RVC=47k RVC=22k RVC=10k PACKAGE 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. 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. Printed in Canada. REVISION NOTES: Added maximum voltage on SDA pad. Change to max. supply voltage. 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

C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839