RF COMMUNICATIONS PRODUCTS SA577 Unity gain level programmable power compandor Product specification Replaces data of December 15, 1993 IC17 Data Handbook Philips Semiconductors 1997 Nov 07 Philips Semiconductors Product specification Unity gain level programmable low power compandor DESCRIPTION SA577 PIN CONFIGURATION The SA577 is a unity gain level programmable compandor designed for low power applications. The SA577 is internally configured as an expandor and a compressor to minimize external component count. D Package FEATURES • Operating voltage range: 1.8V to 7V • Low power consumption (1.4mA @ 3.6V) • 0dB level programmable (10mVRMS to 1.0VRMS) • Over 90dB of dynamic range • Wide input/output swing capability (rail-to-rail) • Low external component count • SA577 meets cellular radio specifications • ESD hardened GCELLIN 1 14 VCC RECTIN 2 13 COMPCAP2 EXPCAP 3 12 COMPIN EXPOUT 4 11 COMPCAP1 VREF 5 10 RECTIN IREF 6 9 GCELLIN GND 7 8 COMPOUT SR00716 Figure 1. Pin Configuration APPLICATIONS • High performance portable communications • Cellular radio • Cordless telephone • Consumer audio • Wireless microphones • Modems • Electric organs • Hearing aids • Automatic level control (ALC) ORDERING INFORMATION DESCRIPTION 14-Pin Plastic Small Outline (SO) TEMPERATURE RANGE ORDER CODE DWG # –40 to +85°C SA577D SOT108-1 ABSOLUTE MAXIMUM RATINGS RATING SYMBOL VCC TA TSTG θJA 1997 Nov 07 PARAMETER SA577 Supply voltage UNITS 8 V Operating ambient temperature range –40 to +85 °C Storage temperature range –65 to +150 °C 125 °C/W Thermal impedance SO 2 853-1535 18666 Philips Semiconductors Product specification Unity gain level programmable low power compandor SA577 ELECTRICAL CHARACTERISTICS TA = 25°C, VCC = 3.6VDC, compandor 0dB level = –20dBV = 100mVRMS, output load RL = 10kΩ, Freq = 1kHz, unless otherwise specified. R1, R2 and R3 are 1% resistors. LIMITS SYMBOL PARAMETER TEST CONDITIONS VCC Supply voltage1 ICC Supply current No signal R2 = 100kΩ Reference voltage2 VCC = 3.6V VREF RL Summing amp output load THD Total harmonic distortion ENO Expandor output noise voltage 0dB Unity gain level Programmable range3 VOS Output voltage offset UNITS MIN TYP MAX 2 3.6 7 V 1.4 2 mA 1.8 1.9 1.7 10 V kΩ 1kHz, 0dB, BW = 3.5kHz 0.25 1.5 % BW = 20kHz, RS = 0Ω 10 25 µV 0.18 1.5 dB 0dB at 1kHz –1.5 R1 = R3 = 18.7kΩ, R2 = 24.3kΩ 0 R1 = R3 = 22.6kΩ, R2 = 100kΩ –10 R1 = R3 = 7.15kΩ, R2 = 100kΩ –20 R1 = R3 = 1.33kΩ, R2 = 200kΩ –40 dBV No signal –150 1 150 mV Expandor output DC shift No signal to 0dB –100 7 100 mV Tracking error relative to 0dB output -20dB expandor –1.0 0.3 1.0 dB –80 –65 dB Crosstalk, COMP to EXP VO SA577 1kHz, 0dB, CREF = 10µF Output swing low 0.2 Output swing high VCC – 0.2 V NOTE: 1. Operation down to VCC = 1.8V is possible, see application note AN1762. 2. Reference voltage, VREF, is typically at 1/2 VCC. 3. Unity gain level can be adjusted CONTINUOUSLY between –40dBV = 10mVRMS and 0dBV = 1.0VRMS. For details see application note AN1762. 1997 Nov 07 3 Philips Semiconductors Product specification Unity gain level programmable low power compandor SA577 BLOCK DIAGRAM and TEST AND APPLICATION CIRCUIT 10k GAINCELL C1 EXPIN 10k + 1 10µF ∆G 14 Σ R1* RECTIFIER 10k COMPCAP2 5k 13 2 RECTIN 30k EXPCAP + C2 VCC 30k C7 10k + 12 3 2.2µF C8 2.2µF + COMPIN 10µF EXPANDOR C3 COMPCAP1 + EXPOUT VREF 4 11 Σ 10µF 10k C4 + C6 2.2µF RECTIFIER 8.6k + 10 5 10µF RECTIN R3* VREF 10k BANDGAP 6 R2* IREF VCC COMPRESSOR ∆G 9 10µF GAINCELL GND 8 7 GCELLIN + C5 + C9 COMPOUT 10µF GND *R1, R2 and R3 are 1% resistors. SR00717 Figure 2. Block Diagram and Test and Application Circuit 1997 Nov 07 4 Philips Semiconductors Product specification Unity gain level programmable low power compandor SA577 TYPICAL PERFORMANCE CHARACTERISTICS VCC = 3.6V, TA = 25°C, R1=R3=7.15kΩ, R2=100kΩ, 0dB level = 100mV, Freq. = 1kHz SUPPLY CURRENT vs TEMPERATURE SUPPLY CURRENT vs SUPPLY VOLTAGE 1.6 1.8 1.5 1.6 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 1.4 1.4 1.2 1 1.2 1.1 0.8 1 0.6 1 0.6 1.3 2 3 4 5 6 SUPPLY VOLTAGE (V) 7 -40 8 UNITY GAIN ERROR vs SUPPLY VOLTAGE -20 0 20 40 60 AMBIENT TEMPERATURE (°C) 100 UNITY GAIN ERROR vs TEMPERATURE 0.6 NOTE: UNITY GAIN ERROR MAY BE SET TO 0 AT ANY VCC BY ADJUSTING THE VALUE OF R1, R3 0.4 0.4 EXPANDOR EXPANDOR UNITY GAIN ERROR (dB) 0.2 UNITY GAIN ERROR (dB) 80 0 COMPRESSOR -0.2 0.2 0 COMPRESSOR -0.2 -0.4 -0.4 -0.6 -0.6 2 3 4 5 SUPPLY VOLTAGE (V) 6 -40 7 -20 TRACKING ERROR vs INPUT LEVEL 0 20 40 60 TEMPERATURE (°C) 80 100 80 100 THD vs TEMPERATURE 0.5 1 NOTE: RELATIVE TO UNITY GAIN COMPRESSOR 0.5 0.4 THD (%) OUTPUT ERROR (dB) EXPANDOR 0 0.3 EXPANDOR COMPRESSOR -0.5 0.2 -1 0.1 2 3 4 5 6 -40 -20 INPUT LEVEL (dB) Figure 3. Typical Performance Characteristics 1997 Nov 07 5 0 20 40 60 TEMPERATURE (°C) SR00715 Philips Semiconductors Product specification Unity gain level programmable power compandor SO14: plastic small outline package; 14 leads; body width 3.9 mm 1997 Nov 07 6 SA577 SOT108-1 Philips Semiconductors Product specification Unity gain level programmable power compandor SA577 DEFINITIONS Data Sheet Identification Product Status Definition Objective Specification Formative or in Design This data sheet contains the design target or goal specifications for product development. Specifications may change in any manner without notice. Preliminary Specification Preproduction Product This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product Specification Full Production This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes at any time without notice, in order to improve design and supply the best possible product. Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. LIFE SUPPORT APPLICATIONS Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices, or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale. Copyright Philips Electronics North America Corporation 1997 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 1997 Nov 07 7