TP3040 Datasheet | National Semiconductor

Description The TP3040 TP3040A filter is a monolithic circuit containing both transmit and receive filters specifically designed for PCM CODEC filtering applications in 8 k Hz sampled systems The filter is manufactured using micro CMOS technology and switched capacitor integrators are used to simulate classical LC ladder filters which exhibit low ponent sensitivity TRANSMIT FILTER STAGE The transmit filter is a fifth order elliptic low pass filter in series with a fourth order Chebyshev high pass filter It provides a flat response in the passband and rejection of signals below 200 Hz and above 3 4 k Hz RECEIVE FILTER STAGE The receive filter is a fifth order elliptic low pass filter designed to reconstruct the voice signal from the decoded demultiplexed signal which as a result of the sampling process is a stair-step signal having the inherent sin x x frequency response The receive filter approximates the function required to pensate for the degraded frequency response and restore the flat passband response Features Y Y Y Y Y Y Y Designed for D3 D4 and CCITT applications a 5V b 5V power supplies Low power consumption 45 m W (0 d Bm0 into 600X) 30 m W (power amps disabled) Power down mode 0 5 m W 20 d B gain adjust range No external anti-aliasing ponents Sin x x correction in receive filter 50 60 Hz rejection in transmit filter TTL and CMOS patible logic All inputs protected against static discharge due to handling Block Diagram TL H 6660 - 1 FIGURE 1 C1995 National Semiconductor Corporation TL H 6660 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltages Power Dissipation Input Voltage Voltage at Any Input or Output g 7V Output Short-Circuit Duration Operating Temperature Range Storage Temperature Lead Temperature (Soldering 10 seconds) ESD Rating to be determined Continuous b 25 C to a...