GS3019

GS3019 Hybrid with LS509 Amplifier GS3019 - HYB DATA SHEET FEATURES • Gennum’s LS509 3 stage amplifier • independent preamp can be used as telecoil preamplifier • four “must use” capacitors mounted on hybrid • choice of 5 settings for optimal transducer current • easy assembly and high reliability STANDARD PACKAGING • Hybrid Typical Dimensions 0.276 in x 0.101 in x 0.094 in (7.01 mm x 2.57 mm x 2.39 mm) DESCRIPTION The hybrid consists of Gennum's LS509 class A amplifier, four capacitors, and two selectable bias resistors. This hybrid is very similar to Gennum's 3010 with the exception that capacitors C2 and C3 on the GS3019 have been increased in value to extend the frequency response of the system. VB 8 VCC 8 VMIC 15 GS3019 This hybrid is very similar to Gennum's 3010 with the exception that capacitors C2 and C3 on the GS3019 have been increased in value to extend the frequency response of the system. C2 and the output impedance of the microphone form a high pass filter with a corner frequency of approximately 180 Hz. The hybrid allows for easy adjustment of this corner frequency via the addition of components to its many additional solder pads. Likewise, R3 and C3 form a high pass filter with a corner frequency of 130 Hz. Altering this frequency is easily accomplished by adding additional capacitance between pads 12 and 2 on the hybrid. Stage C of the LS509 is a class A current drive output. There is a fixed reference voltage of typically 29 mV at pin 2 of the chip (pad 5 of the hybrid). The current that flows in the receiver is the ratio of this 29 mV reference voltage to the resistance seen from pin 2 to ground. R1 and R2 have been included on the GS3019 to allow for easy adjustment of the current for the most commonly used receivers. The system also has the capability of MPO (Maximum Power Output) control. This is provided by the Schottky diodes on the LS509 die. To make use of the diodes in the system, a potentiometer must be added from pads 7 to 9 on the hybrid. 4k C1 4µ7 7 9 C4 0µ1 7 MPO 21k C2 IN 16 220n 6 -A -B -C 10 2 9 OUT 125 LS509 - DIE RE 5 4 3 1 R1 58 R2 98 MGND 1 R3 5k6 14 A IN C3 220n 2 13 B IN 3 12 4 B OUT 6 GND 17 GND1 11 18 10 5 R3 A OUT A OUTR B INC R1 GND2 R2 All resistors in ohms, all capacitors in farads unless otherwise stated. FUNCTIONAL BLOCK DIAGRAM Revision Date: May 1998 Document No. 521 - 04 - 02 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 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range VALUE/UNITS 3 V DC 25 mW -10° C to +40°C -20° C to +70°C VMIC 15 MGND 1 16 14 AIN PAD CONNECTION BINC AOUT BOUT 4 R3 GND 6 18 10 R2 GND1 GND2 7 MPO 2 3 5 17 IN 8 VB OUT 13 BIN 12 AOUTR 11 R1 9 CAUTION CLASS 1 ESD SENSITIVITY ELECTRICAL CHARACTERISTICS PARAMETER Amplifier Current Transducer Current Transducer Current Transducer Current Bias Voltage (Pad 15) Bias Voltage (Pad 5) System Voltage Gain Maximum Power Output Conditions: Frequency = 3 kHz, Temperature = 25°C, Supply Voltage V B = 1.3 V SYMBOL I AMP I TRANS 1 I TRANS 2 I TRANS 3 VP15 V P5 Gain MPO CONDITIONS MIN 75 175 TYP 160 225 520 725 1.3 28.5 64.5 -12 MAX 245 290 600 820 35.5 67.5 -9 UNITS µA µA µA µA V mV dB dBV S1 = Closed, S3 = Closed S1 = Closed, S2 = Closed 450 650 1.27 21.5 VIN = -90 dBV VIN = -60 dBV 61.5 -17 All conditions and parameters remain as shown in the Test Circuit unless otherwise specified in CONDITIONS Column. V PX - Actual voltage measured on the pin at given condition (X is pin number). Notes: 1. All capacitors on Hybrid ± 20%, all screened on resistors ± 5%. 1.3V 8 VCC 4k 15 C1 4µ7 7 9 8 C4 0µ1 GS3019 7 2k7 S1 21k RS 3k9 C2 16 220n 6 -A -B -C 10 2 9 VOUT VIN LS509 - DIE 125 RE 5 4 3 1 R1 58 R2 98 1 R3 5k6 14 RGT 47k5 All resistors in ohms, all capacitors in farads unless otherwise stated. C3 220n 2 13 RVC S2 47k5 S3 4 6 17 11 18 10 5 3 12 Fig. 1 Production Test Circuit 521 - 04 - 02 2 VB 8 VCC 8 15 C1 4µ7 7 9 4k C4 0µ1 RMPO 21k EK3033 16 C2 220n 6 7 50k GS3019 ED1915 -A -B -C 10 2 9 125 LS509 - DIE RE 5 4 3 1 R1 58 R2 98 1 R3 5k6 14 50k RGT All resistors in ohms, all capacitors in farads unless otherwise stated. C3 220n 2 13 50k RVC 4 6 17 11 18 10 5 3 12 Fig. 2 Typical Hearing Instrument Application VOLUME CONTROL + - BATTERY 1 16 2 3 4 5 17 14 13 12 11 6 18 10 7 MIC 8 + 15 9 + REC GAIN TRIMMER MPO TRIMMER Fig. 3 Typical Assembly Diagram 3 521 - 04 - 02 1.3V 8 VCC 8 15 C1 4µ7 7 9 4k C4 0µ1 RMPO 50k 9 10µ OUT 7 6k8 GS3019 2.6V 21k 3k9 16 C2 220n 6 -A -B -C 10 2 VIN LS509 - DIE 125 RE 100k 5 4 3 1 R1 58 R2 98 1 R3 5k6 14 47k5 RGT All resistors in ohms, all capacitors in farads unless otherwise stated. C3 220n 2 13 47k5 CLC RVC 4 6 17 11 18 10 5 3 12 Fig. 4 Characterization Circuit (used to generate typical curves) 0 CLC =0 OUTPUT LEVEL (dBV) OUTPUT LEVEL (dBV) -10 0 RVC=100k -10 -20 -30 -40 -50 -60 CLC=0µ1 CLC=47nF CLC=22nF CLC=10nF RVC=47k RVC=22k R VC=10k RVC=3k9 -20 -30 -40 20 100 1k 10k 20k -70 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 FREQUENCY (Hz) INPUT LEVEL (dBV) Fig. 5 Frequency Response for Different CLC Capacitors Fig. 6 I/O Curves at Various R VC Settings 521 - 04 - 02 4 0.276 (7.01) 0.101 (2.57) GS3019 XXXXXX 0.104 MAX (2.64) 1 2 3 4 5 17 6 18 7 16 14 15 13 12 8 11 10 9 Dimensions are in inches. Dimensions in parenthesis are in millimetres, converted from inches and include minor round off errors. 1.0000 inches = 25.400 mm. Dimensions ± 0.005 (± 0.13) unless otherwise stated. Pad numbers for illustration purposes only. Smallest pad 0.023 x 0.013 (0.58 x 0.33). Largest pad 0.036 x 0.027 (0.92 x 0.69). XXXXXX - work order number. This hybrid is designed for point to point manual soldering. Fig. 7 Hybrid Layout & 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. REVISION NOTES: Updated to Data sheet 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 March 1994 Gennum Corporation. All rights reserved. Printed in Canada. 5 521 - 04 - 02