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| Single Stage Inverting Amplifier GS563 - DATA SHEET FEATURES * 1.0 to 5 VDC operating range * low current consumption (54 A) * 1% electrical distortion * typically 55 dB open loop gain * low pin count (4 pin) * ideal for active filtering STANDARD PACKAGING * 8 pin PLID(R) * Chip size 27 x 25 mils DESCRIPTION The GS563 is a low noise, low current, inverting amplifier which utilizes Gennum's low voltage bipolar JFET technology. The amplifier has a minimum open loop gain of 45 dB with the closed loop gain set by the ratio of feedback resistor to the input resistor. For a well controlled gain tolerance, it is recommended that the closed loop gain be at least 20 dB below the open loop gain. The device is internally bias compensated, preventing any DC current flow via external feedback resistors. It is ideally suited for filtering applications and can be used as a drop in replacement for single transistor configurations. VCC 7 INPUT 6 3 OUTPUT 2 GND GS563 FUNCTIONAL BLOCK DIAGRAM Revision Date: May 1998 Document No. 520 - 67 - 01 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 Storage Temperature CAUTION CLASS 1 ESD SENSITIVITY PIN CONNECTIONS VALUE / UNITS 5V DC 25 mW -10o to +40o C -20o to +70o C IN GND 1 8 4 5 OUT VCC ELECTRICAL CHARACTERISTICS Stage = 1.3V Temperature = 25o C PARAMETER Amplifier Current Bias Voltage (Pin 3) Bias Current (Pin 3) Output Voltage Swing - High (Pin 3) Output Voltage Swing - Low (Pin 3) Open Loop Gain Input Referred Noise Distortion Supply Rejection AOL I.R.N. THD PSRR VOL SYMBOL IAMP VQ3 IBIAS VOH See Note 1 S1 = c, S2 = b, S3 = b See Note 2 S1 = b, S2 = b, S3 = c See Note 3 S1 = d, S2 = c, See Note 4 Aweight S1 = d, S2 = c S1 = d, S2 = c, VOUT<100 mVRMS Open Loop 45 6 55 1.0 0.64 11 2.5 1.0 dB V % dB 200 258 mV CONDITIONS MIN 30 475 -50 200 TYP 54 550 0 590 MAX 80 675 50 UNITS A mV nA mV All switch positions remain as shown in Test Schematic unless otherwise stated. VP is the actual voltage measured on the pin at given condition. V Q - quiescent (unbias) voltage measured on the pad (nothing connected to the pin) Note: 1. IBIAS = (VP3 [S2 = b] - VQ3 ) /1M 2. VOH = VP6 - VQ6 3. VOL = VQ6 - VP6 4. AOL = 20 log (1 + RF / RS) - (20 log ( (RF / RS) (1 / (1 + R1 / R2) ) (VIN / VOUT) - 1) ) 1F A VCC 1.3V R1 1k R2 10 180mVRMS at 1kHz C1 1.0 RS 3k92 d c b S1 3 7 GS563 VOUT 6 S3 2 a b c VIN 1A + 0.4V DC a 680pF V 10A b RF = 1M a All resistors in ohms, all capacitors in farads unless otherwise stated. S2 10A c RF = 392k Fig. 1 GS563 Test Circuit 520 - 67 - 01 2 7 BASE CURRENT COMPENSATION 6 3 2 Fig. 2 Functional Schematic C3 HIGH PASS R2 V1 C1 C2 R1 C4 R3 C7 BAND PASS R6 R11 VO V2 C5 R4 R5 C6 C8 R7 R10 LOW PASS C11 V3 C9 R8 R9 C10 C12 R11 (For Filter Design refer to Note 600-9, Active Filtering for Hearing Aids) All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 3 Multi-Band Filtering Application 3 520 - 67 - 01 VB 7 GS563 1k0 10 VIN 2 3 6 VOUT 10k All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 4 Characterization Circuit -10 -20 -30 -40 20 18 16 14 OUTPUT (dBV) -50 -60 -70 THD (%) -120 -100 -80 -60 - 40 -20 12 10 8 6 -80 -90 -100 -140 4 2 0 -90 -80 -70 -60 -50 -40 -30 INPUT (dBV) INPUT (dBV) Fig. 5 Input vs Output Fig. 6 THD vs Input Level 60 1 50 8 OUT VCC IN GND GAIN (dB) 1M 1M 40 2k2 10 4 10 VO 5 30 8 Pin DIP Pinout (For evaluation purposes) 20 10 100 1k 10k 100k FREQUENCY (Hz) Fig. 7 Open Loop Voltage Gain 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. (c) Copyright August 1993 Gennum Corporation. All rights reserved. Printed in Canada. 520 - 67 - 01 4 |
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