Linear Class H Current Manager Hybrid GS3013 DATA SHEET FEATURES DESCRIPTION • complete linear system The GS3013 is a linear hybrid containing three amplifier stages. • current mode class H output stage This product incorporates a current mode class H power amplifier. • current drive power amp • low distortion / low noise By adapting the bias of the output stage to the requirements of the signal being processed, significant current savings can be realised compared to traditional class A amplifiers. • low amplifier current 190 µA typical The adaptive action does not compromise the characteristics of a current drive output stage. STANDARD PACKAGING • Hybrid Typical Dimensions 0.225in x 0.130in x 0.110in (5.72mm x 3.31mm x 2.79mm) In addition to the output stage, two additional stages of preamplification are provided to allow filtering and gain adjustment to be easily accomplished. VB1 VB2 C4 5 6 11 GS3013 C4 2µ2 1 VREG 9 C1 220n 14 VB GC590 CONTROL VB VREG 8 24k 12k IN 10 C2 82n 12k - A 2 - + - B 9 C - 3 + 5 170 7 6 10 12 4 OUT 2 RE 1 RE1 125 4 11 13 C3 82n MGND 8 3 16 AIN 15 14 AOUT BRIN 13 12 7 BIN BOUT GND GND2 All resistors in ohms, all capacitors in farads unless otherwise stated. FUNCTIONAL BLOCK DIAGRAM Revision Date: May 1998 Document No. 520 - 87 - 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: [email protected] PAD CONNECTION RE GND2 ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE / UNITS Supply Voltage 5 VDC Power Dissipation 25 mW Operating Temperature Range RE1 1 AIN 16 AOUT 15 BRIN 14 3 2 -10° C to 40° C Storage Temperature Range -20° C to 70° C 4 OUT 5 VB1 6 VB2 7 GND D E D S N E GN M SI M E O D C E R EW T N O N OR F CAUTION CLASS 1 ESD SENSITIVITY BIN 13 8 C4 MGND 11 BOUT 12 ELECTRICAL CHARACTERISTICS 10 9 VREG IN Conditions: Frequency = 1 kHz, Temperature 25 °C, Voltage Supply = 1.3 VDC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 80 190 300 µA - - 1.1 V OVERALL Amplifier Current I AMP Minimum Operating Voltage VB Overall Gain AV 51 54 57 dB Distortion THD VIN = -40 dBV - 0.2 1 % IRN RTRIM = RVC = 10 kΩ A Weighted Filter - - 2.5 µV RMS V REG I LOAD = 30 µA 870 920 970 mVDC - 2.9 - µV RMS Input Referred Noise VOLTAGE REGULATOR Regulator Voltage Output Noise A Weighted STAGE A AND STAGE B I BIAS Input Bias Current DC Voltage Gain -25 0 25 nA Stage A AOL -A - 52 - dB Stage B AOL -B - 42 - dB Current Source Capabilities I SOURCE 15 30 - µA Output Voltage Swing - Low V SINK 260 315 - mV 3 6 - mA - 24 - kΩ STAGE C AND CONTROL CIRCUIT Maximum Current Sinking I SINK Output Impedance ROUT RE grounded, V P4 = 1.3 V Minimum Emitter Voltage V RE-MIN 2 5 9 mV Maximum Emitter Voltage V RE-MAX 62 66 74 mV Minimum Transducer Current I T-MIN RE, RE1 shorted 26 71 126 µA Maximum Transducer Current I T-MAX RE, RE1 shorted 750 930 1100 µA Maximum/Minimum Transducer I RANGE 16 20 28 dB 14 17 22 dB - 100 - mS Current Ratio Dynamic Headroom Headroom Time Constant TC Note 1 All parameters and switches remain as shown in the Test Circuit unless otherwise stated in CONDITIONS column. Notes: 520 - 87 - 02 1. Headroom = 20 Log (V RE DC / V REACRMS) [V IN = -70 dBV] 2 1.3V VB2 C4 6 11 5 2.6V GS3013 C4 2µ2 1 VREG 9 1k GC590 CONTROL VB VREG 8 C1 220n 14 VB 24k 3k9 12k IN 12k 2 OUT D E D S N E GN M SI M E O D C E R EW T N O N OR F - A 10 C2 82n VI 9 - + - B C 3 + - 5 170 6 7 10 2 1 RE RE1 125 4 11 13 12 4 C3 82n MGND 8 3 15 16 14 AOUT AIN CA 100k RVC 12 13 BRIN BIN GND2 7 BOUT GND 100k RTRIM 0µ1 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 1 Production Test Circuit 1.3V VB1 VB2 C4 6 11 5 GS3013 C4 2µ2 1 VREG 9 C1 220n 14 VB GC590 CONTROL VB VREG 8 24k 12k IN C2 82n 12k - A 10 9 2 - + - B C - 3 + 5 170 6 7 10 12 OUT 4 2 RE 1 RE1 125 4 11 13 C3 82n 8 3 GND2 MGND 16 15 14 AOUT AIN 100k RVC CA 0µ1 12 13 BRIN BIN 7 BOUT GND 100k RTRIM All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 2 Typical Hearing Instrument Application 3 520 - 87 - 02 VOLUME CONTROL CA 0µ1 D E D S N E GN M SI M E O D C E R EW T N O N OR F 12 13 14 15 16 1 11 2 10 3 + MIC 9 + 8 7 6 5 REC 4 All resistors in ohms, all capacitors in farads unless otherwise stated. + - BATTERY Fig. 3 Typical Assembly Diagram VB=1.3V VB2 C4 6 11 5 VL=2xVB=2.6V GS3013 C4 2µ2 1 VREG 9 C1 220n GC590 1k3 CONTROL VB VREG 8 RL 14 VB 24k 3k9 12k IN - A 10 C2 82n 12k - + - B 9 C - + 2 3 5 170 VI 6 7 10 RE 1 RE1 125 C3 82n MGND 3 8 15 16 14 AOUT AIN RVC CA 10k 0µ1 12 13 BIN BRIN RGT 7 BOUT 100k All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 4 Characterization Circuit 520 - 87 - 02 2 4 11 13 12 OUT 4 4 GND GND2 20 60 RVC=100kΩ 50 RVC=100kΩ RVC=10kΩ 40 -20 GAIN (dB) OUTPUT LEVEL (dBV) 0 VIN =80dBV (PINK NOISE GENERATOR) -40 RVC=1kΩ RVC=10kΩ 30 20 RVC=1kΩ -60 10 D E D S N E GN M SI M E O D C E R EW T N O N OR F RVC=100Ω 0 -80 -120 -100 -80 -60 -40 -20 20 100 INPUT LEVEL (dBV) Fig. 5 Input vs Output Transfer Function for the Different Values of the RVC Resistor 10k 20k Fig. 6 Frequency Response for Different RVC Values 1.0 1.0 RELATIVE GAIN (dB) 0.5 0.4 0.2 RL=0 VL =VB 0 -0.5 0.1 -1 1.0 0.06 -80 -70 -60 -50 -40 -30 -20 1.2 1.4 1.6 1.8 2.0 SUPPLY VOLTAGE (V) VRE LEVEL (dBV) Fig. 8 System Gain vs Supply Fig. 7 Transducer Current Characteristics 10 THD (%) TRANSDUCER CURRENT (mA) 1k FREQUENCY (Hz) ƒ = 1kHz 1 0.1 -60 -50 -40 -30 -20 INPUT LEVEL (dBV) Fig. 9 THD & Noise vs Input Level 5 520 - 87 - 02 60 10 180 PHASE GAIN VIN=-40dBV 1 90 1M GAIN (dB) THD & NOISE (%) 50 1M 10µ 40 0 1.3V 2.2k 10µ VOUT PREAMP 30 VAC -90 D E D S N E GN M SI M E O D C E R EW T N O N OR F 0.1 100 1k 20 20 10k 100 1k FREQUENCY (Hz) 10k -180 20k 10k 20k FREQUENCY (Hz) Fig. 11 Stage A Open Loop Gain & Phase vs Frequency Fig. 10 THD & Noise vs Frequency 10 180 50 PHASE 90 GAIN 1M 30 1M NOISE (µV/√Hz) GAIN (dB) 40 0 10µ 1.3V 2.2k 10µ VOUT -90 PREAMP 20 VAC 10 20 100 1k 10k 1 20 -180 20k 100 1k FREQUENCY (Hz) FREQUENCY (Hz) Fig. 12 Stage B Open Loop Gain & Phase vs Frequency Fig. 13 Output Noise vs Frequency 3 R RGT=10k GT=10k RELATIVE GAIN (dB) 2 1 0 -1 -2 -3 -20 -10 0 20 10 30 40 TEMPERATURE (°C) Fig. 14 Relative Gain vs Temperature 520 - 87 - 02 6 50 0.225 (5.72) GS3013 0.130 (3.31) XXXX YYWW XXXXXX D E D S N E GN M SI M E O D C E R EW T N O N OR F 0.120 (3.05) MAX C4 12 13 15 14 16 11 2 C4 C4 10 9 1 C1 3 8 7 6 5 4 Dimension units are in inches. Dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.0000 inches = 25.400 mm. Smallest pad no.3 0.025 x 0.018 (0.63 x 0.46). Largest pad no.7 0.039 x 0.025 (0.99 x 0.64). Dimension tolerances: ±0.005 (+0.13) unless otherwise stated. Pad numbers and capacitor numbers for illustration only. XXXXXX - work order number. This hybrid is designed for point to point manual soldering. Fig. 8 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 April 1994 Gennum Corporation. All rights reserved. 7 Printed in Canada. 520 - 87 - 02