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Part: SA577D
Category:
Description: SA577; Unity Gain Level Programmable Power Compandor
Company: Philips Semiconductors
Datasheet: Download SA577D datasheet File size : 146 kB
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RF COMMUNICATIONS PRODUCTS
SA577 Unity gain level programmable power compandor
Product specification Replaces data of December 15, 1993 IC17 Data Handbook 1997 Nov 07
Philips Semiconductors
Philips Semiconductors
Product specification
Unity gain level programmable low power compandor
SA577
DESCRIPTION
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.
PIN CONFIGURATION
D Package
GCELLIN RECTIN 1 2 3 4 14 13 12 11 10 9 8 V CC COMPCAP2 COMPIN COMPCAP1 RECTIN GCELLIN COMPOUT
FEATURES
EXPCAP EXPOUT
· 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
VREF 5 IREF GND 6 7
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 40 to +85°C ORDER CODE SA577D DWG # SOT108-1
ABSOLUTE MAXIMUM RATINGS
RATING SYMBOL VCC TA TSTG JA Supply voltage Operating ambient temperature range Storage temperature range Thermal impedance SO PARAMETER SA577 8 40 to +85 65 to +150 125 UNITS V
°C °C °C/W
1997 Nov 07
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 = 10k, Freq = 1kHz, unless otherwise specified. R1, R2 and R3 are 1% resistors. LIMITS SYMBOL PARAMETER TEST CONDITIONS MIN VCC ICC VREF RL THD ENO 0dB Supply voltage1 Supply current Reference voltage2 Summing amp output load Total harmonic distortion Expandor output noise voltage Unity gain level Programmable range3 1kHz, 0dB, BW = 3.5kHz BW = 20kHz, RS = 0 0dB at 1kHz R1 = R3 = 18.7k, R2 = 24.3k R1 = R3 = 22.6k, R2 = 100k R1 = R3 = 7.15k, R2 = 100k R1 = R3 = 1.33k, R2 = 200k VOS Output voltage offset Expandor output DC shift Tracking error relative to 0dB output Crosstalk, COMP to EXP Output swing low VO Output swing high No signal No signal to 0dB -20dB expandor 1kHz, 0dB, CREF = 10µF 150 100 1.0 1.5 No signal R2 = 100k VCC = 3.6V 1.7 10 0.25 10 0.18 0 10 20 40 1 7 0.3 80 0.2 VCC 0.2 V 150 100 1.0 65 mV mV dB dB dBV 1.5 25 1.5 2 SA577 TYP 3.6 1.4 1.8 MAX 7 2 1.9 V mA V k % µV dB UNITS
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
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