Class A Compression Amplifier LD511 - HYB DATA SHEET DESCRIPTION • 64dB typical electrical gain • 0.94VDC voltage regulator • 7ms attack time, 40ms release time • 15dB threshold adjustment The LD511 is a Class A compression amplifier which can operate over a range of DC battery voltages from 1.1V to 2.4V. A voltage regulator, which is independent of supply voltage variations, is on-chip to supply a stable 0.94VDC bias to the amplifier circuitry and to the microphone. • low noise and distortion • compression ratio ∞ : 1 • 0.3kHz – 6kHz frequency response The LD511, in compression, has approximately 15dB of threshold adjustment by varying RTH (see application circuit) and a compression function ratio of ∞ : 1. Minimum attack and release times are fixed at 7ms and 40ms respectively and they can be adjusted simultaneously by changing the filter capacitor on pin 8, although the ratio of attack to release time is kept constant. STANDARD PACKAGING Hybrid Typical Dimensions: 0.0945 × 0.1115 × 0.042in (2.40 × 2.83 × 1.07mm) The output stage bias can be set to accommodate different receiver impedances by changing the value of RE. The voltage across RE (pin 2 to ground) is a constant 27mV so the bias current is 27mV divided by the total value of RE in parallel with 500Ω. AOUT BIN VB 10 1 6 VOLTAGE REGULATOR 20K VREG 7 AIN 9 RIN -A 10K 35K -B 3 BOUT 5 AGC RE RECTIFIER 4 8 GND CAGC 2 RE All resistors in ohms, all capacitors in farads unless otherwise stated. BLOCK DIAGRAM Doc.No.22978-3 [Rev. May 2003] 1 of 6 LD511 - HYB FEATURES ABSOLUTE MAXIMUM RATINGS PAD CONNECTIONS VB 6 5 AGC 2.4VDC VREG 7 4 GND 25mW CAGC 8 3 BOUT Operating Temperature Range -10°C to 40°C AIN 9 2 RE Storage Temperature Range -20°C to 70°C Supply Voltage Power Dissipation AOUT 10 1 LD511 - HYB VALUE/UNITS PARAMETER BIN CAUTION CAUTION ELECTROSTATIC SENSITIVE DEVICES MOISTURE SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC-FREE WORKSTATION DO NOT OPEN PACKAGES EXCEPT UNDER CONTROLLED CONDITIONS ELECTRICAL CHARACTERISTICS Conditions: Frequency = 1kHz, Temperature = 25°C, Supply Voltage VB = 1.3VDC PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 60 64 68 dB - 2.0 4.0 µV - 1 3 % COMPRESSION INACTIVE (S1 OPEN) Gain AV Input Referred Noise IRN Total Harmonic Distortion THD Amplifier Current ΙAMP Transducer Current ΙTRANS Input Impedance RIN Regulated Voltage VREG On Chip Emitter Resistance RE Emitter Bias Voltage (pin 2) VRE NFB 0.2 - 10kHz at 12dB/oct - 0.4 0.6 mA 1.35 1.6 2.0 mA - 15 - kΩ 0.90 0.96 1.0 VDC - 500 - Ω - 27 - mV - ∞ - dB COMPRESSION ACTIVE (S1 CLOSED) Compression Range Total Harmonic Distortion THDCOMP V2 = 1mV - 4.0 7.0 % Attack Time TATT V2 switched from 112µV to 2mV - 7 - ms Release Time TREL - 40 - ms Compression Output VCOMPOUT V2 = 1mV - 0.10 0.18 VRMS Compression Output Change ∆VCOMPOUT V2 = 120mV; Note 1 - 13 20 mVRMS All parameters and switches remain as shown in Test Circuit unless otherwise stated in CONDITIONS column Notes: 1. ∆VCOMPOUT = VOUT[V2 =120mV] - VCOMPOUT 2 of 6 22978-3 10 VB=1.3 VDC ΙAMP 0.033µ RB 4.7 1 6 ΙTRANS VOLTAGE REGULATOR VOUT 0.068u V2 RL 600 20K LD511 - HYB 7 3.9K 56K -A 9 Hammond 99966 3 -B 10K CS 0.047µ 35K RE S1 RS 50 RECTIFIER 56 5 27K 0.0047µ 8 10µ 4 2 2.2µ 15 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 1 Test Circuit 7 10 6 80 10K 20K 15K 3 9 32K 3.2K 2 500 4 8 5 1 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 2 Functional Schematic 3 of 6 22978-3 VB=1.3 VDC RVC 10K 0.1µ 10 1 6 VOLTAGE REGULATOR ED1913 LD511 - HYB 7 20K 10u -A 9 10K 0.1µ 35K 3 -B RTH 100K RE RECTIFIER 5 4.7n 4 8 0.068µ 2 2.2µ 47 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 3 LD511 Stand Alone Application Circuit VB=1.3 VDC RVC 10K 0.1µ 10 1 6 1.0µ EP3075 VOLTAGE REGULATOR 7 MPO 50K 20K 10µ 9 -A 10K 0.1µ 35K 0.1µ 3 -B RTH 100K RE RECTIFIER 5 0.0047µ 8 4 2 2.2µ All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 4 LD511/Class D Application Circuit 4 of 6 22978-3 -0.1 62 VOLTAGE GAIN (dB) 63 -0.2 -0.3 -0.4 LD511 - HYB VOLTAGE GAIN (dB) 0 61 60 59 -0.5 58 0 10 20 30 40 50 60 70 80 90 100 0.8 0.9 1.0 1.1 BATTERY RESISTANCE ( Ω ) 1.3 1.4 1.5 1.6 1.7 Fig. 6 Voltage Gain vs Battery Voltage Fig. 5 Voltage Gain vs Battery Resistance 2.5 REGULATOR VOLTAGE (VDC) 0.95 2.0 ΙTOT (mA) 1.2 BATTERY VOLTAGE (V) 1.5 1.0 0.5 0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 0.93 0.91 0.89 0.87 0.85 0.9 1.8 1.1 BATTERY VOLTAGE (V) 1.3 1.5 1.7 BATTERY VOLTAGE (V) Fig. 7 Total Current vs Battery Voltage Fig. 8 Regulator Voltage vs Battery Voltage 4 1000 2 R TH R =∞ TH = 200K 200 R TH = 100k 100 R 50 TH CS = 47nF 0 RELATIVE GAIN (dB) OUTPUT VOLTAGE (mV) 500 = 0k 20 10 -2 -4 CS = 22nF -6 -8 CS = 10nF -10 -12 -14 CS = 6.8nF -16 5 2 0.01 -18 -20 0.1 1.0 10 100 20k 20 FREQUENCY (Hz) INPUT VOLTAGE (mV) Fig. 10 Frequency Response at Various CS Values Fig. 9 Threshold Adjustment 5 of 6 22978-3 PACKAGE DIMENSIONS PAD DIMENSIONS 0.0945 (2.40) VB 6 VREG 7 CAGC 8 AIN 9 AOUT 10 XXX 0.045 MAX (1.13) 5 AGC 4 GND 3 BOUT 2 RE 1 BIN 0.01575 (0.400) (0.4 0.0075 (0.191) 0 0 0 0 0 -79.5 -79.5 -79.5 -79.5 1 2 3 4 5 6 7 8 9 10 0 0 0 0 0 -2. 019 -2. 0 019 -2. 0 019 -2. 0 019 -2. 0 019 -79.5 0 20 40 60 80 80 60 40 20 0 0 0. 508 1. 016 1. 524 2. 032 2. 032 1. 524 1. 016 0. 508 0 MIL 1 2 3 4 5 6 7 8 9 10 PAD DIMENSION Xdim Ydim 10 15 10 15 10 15 10 15 10 15 10 15 10 15 10 15 10 15 10 15 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 0. 254 0. 381 mm 0. 0.1115 (2.83) PAD POSITION X Y LD511 - HYB D11 D11 PAD NO. Dimensions are in inches. Dimensions in paranthesis are in millimeters converted from inches and include minor rounding errors. 1.0000 inches = 25.400 mm Dimensions tolerances ± 0.003 (± 0.08) unless otherwise stated. Minimum Pad size 0.010 x 0.015 (0.254 x 0.381) XXX = Last 3 digits of work order number This hybrid is designed for either point-to-point manual soldering or for reflow according to Gennum's reflow process (Information Note 521-45). DOCUMENT IDENTIFICATION REVISION NOTES: 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. Moisture sensitivity symbol added. Information added that this hybrid is designed for reflow. GENNUM CORPORATION GENNUM JAPAN CORPORATION MAILING ADDRESS: P.O. Box 489, Stn A, Burlington Ontario, Canada L7R 3Y3 Tel. +1 (905) 632-2996 fax: +1 (905) 632-2814 Shinjuku Green Tower Building 27F, 6-14-1, Nishi Shinjuku, Shinjuku-ku, Tokyo, 160-0023 Japan Tel. +81 (03) 3349-5501, Fax. +81 (03) 3349-5505 SHIPPING ADDRESS: 970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5 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 2003 Gennum Corporation. All rights reserved. Printed in Canada. 6 of 6 22978-3