Telecom ICs Interfc CODEC Filter

ETC5057N/H

Manufacturer Part NumberETC5057N/H
DescriptionTelecom ICs Interfc CODEC Filter
ManufacturerSTMicroelectronics
TypeTelecom ICs - Various
ETC5057N/H datasheet
 


Specifications of ETC5057N/H

Operating Supply Voltage7 VSupply Current10 uA
Operating Temperature Range- 25 C to + 125 CMounting StyleThrough Hole
Operating Frequency2.048 MHzPackage / CasePDIP-16
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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COMPLETE CODEC AND FILTERING SYS-
TEM (DEVICE) INCLUDING:
– Transmit high-pass and low-pass filtering.
– Receive low-pass filter with sin x/x correction.
– Active RC noise filters
– -law or A-law compatible COder and DECoder.
– Internal precision voltage reference.
– Serial I/O interface.
– Internal auto-zero circuitry.
A-LAW 16 PINS (ETC5057FN, 20 PINS)
-LAW WITHOUT SIGNALING, 16 PINS
(ETC5054FN, 20 PINS)
MEETS OR EXCEEDS ALL D3/D4 AND
CCITT SPECIFICATIONS
5V OPERATION
LOW OPERATING POWER - TYPICALLY 60
mW
POWER-DOWN STANDBY MODE - TYPI-
CALLY 3 mW
AUTOMATIC POWER-DOWN
TTL OR CMOS COMPATIBLE DIGITAL IN-
TERFACES
MAXIMIZES LINE INTERFACE CARD CIR-
CUIT DENSITY
0 to 70 C OPERATION
DESCRIPTION
The ETC5057/ETC5054 family consists of A-law
and –law monolithic PCM CODEC/filters utilizing
the A/D and D/A conversion architecture shown in
the block diagram below, and a serial PCM inter-
face. The devices are fabricated using double-
poly CMOS process. The encode portion of each
device consists of an input gain adjust amplifier,
an active RC pre-filter which eliminates very high
frequency noise prior to entering a switched-ca-
pacitor band-pass filter that rejects signals below
200 Hz and above 3400 Hz. Also included are
auto-zero circuitry and a companding coder which
samples the filtered signal and encodes it in the
companded A-law or –law PCM format. The de-
code portion of each device consists of an ex-
panding decoder, which reconstructs the analog
signal from the companded A-law or –law code,
a low-pass filter which corrects for the sin x/x re-
sponse of the decoder output and rejects signals
above 3400 Hz and is followed by a single-ended
power amplifier capable of driving low impedance
loads. The devices require 1.536 MHz, 1.544
March 2000
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
SERIAL INTERFACE CODEC/FILTER
ORDERING NUMBERS:
ORDERING NUMBERS:
ORDERING NUMBERS:
MHz, or 2.048 MHz transmit and receive master
clocks, which may be asynchronous, transmit and
receive bit clocks which may vary from 64 kHz to
2.048 MHz, and transmit and receive frame sync
pulses. The timing of the frame sync pulses and
PCM data is compatible with both industry stand-
ard formats.
ETC5054
ETC5057
DIP16 (Plastic)
ETC5057N
ETC5054N
SO16 (Wide)
ETC5057D
ETC5054D
PLCC20
ETC5057FN
ETC5054FN
1/18

ETC5057N/H Summary of contents

  • Page 1

    COMPLETE CODEC AND FILTERING SYS- TEM (DEVICE) INCLUDING: – Transmit high-pass and low-pass filtering. – Receive low-pass filter with sin x/x correction. – Active RC noise filters – -law or A-law compatible COder and DECoder. – Internal precision voltage ...

  • Page 2

    ETC5054 - ETC5057 PIN CONNECTIONS (Top view) DIP and SO BLOCK DIAGRAM 2/18 PLCC ...

  • Page 3

    PIN DESCRIPTION Pin N N PLCC Type DIP Name * and SO (**) GNDA GND ...

  • Page 4

    ETC5054 - ETC5057 FUNCTIONAL DESCRIPTION POWER-UP When power is first applied, power-on reset cir- cuitry initializes the device and places it into the power-down mode. All non-essential circuits are deactivated and the D and VF X put in high impedance ...

  • Page 5

    The D output is disabled by the falling BCLK lowing the eighth rising edge low, which-ever comes later. A rising edge on the receive frame sync pulse, FS PCM data ...

  • Page 6

    ETC5054 - ETC5057 ANALOG INTERFACE WITH TRANSMIT INPUT AMPLIFIER (all devices) Symbol I XA Input Leakage Current I (–2.5V V +2.5V Input Resistance I (–2.5V V +2.5V Output Resistance (closed loop, unity gain ...

  • Page 7

    TIMING SPECIFICATIONS Symbol 1/t Frequency of master clocks PM Depends on the device used and the BCLK t Width of Master Clock High WMH t Width of Master Clock Low WML t Rise Time of Master Clock RM t Fall ...

  • Page 8

    ETC5054 - ETC5057 Figure 2: Short Frame Sync Timing 8/18 ...

  • Page 9

    Figure 3: Long Frame Sync Timing ETC5054 - ETC5057 9/18 ...

  • Page 10

    ETC5054 - ETC5057 TRANSMISSION CHARACTERISTICS +5V 5 amplifier connected for unity-gain non-inverting (unless otherwise specified). AMPLITUDE RESPONSE Symbol Absolute levels - nominal 0 dBm0 level is 4 dBm (600 ...

  • Page 11

    TRANSMISSION (continued) ENVELOPE DELAY DISTORTION WITH FREQUENCY Symbol D Transmit Delay, Absolute (f = 1600Hz Transmit Delay, Relative 500Hz - 600Hz f = 600Hz - 800Hz f = 800Hz - 1000Hz f = ...

  • Page 12

    ETC5054 - ETC5057 TRANSMISSION CHARACTERISTICS (continued) NOISE (continued) Symbol SOS Spurius out-of-band Signals at the Channel Output Loop around measurement, 0dBm0, 300Hz - 3400Hz input applied to DR, measure individual image signals at DX 4600Hz - 7600Hz 7600Hz - 8400Hz ...

  • Page 13

    APPLICATION INFORMATION POWER SUPPLIES While the pins at the ETC505X family are well protected against electrical misuse recom- mended that the standard CMOS practice be fol- lowed, ensuring that ground is connected to the device before any-other connections ...

  • Page 14

    ETC5054 - ETC5057 Figure 6: Typical Synchronous Application. 14/18 ...

  • Page 15

    DIM. MIN. TYP. MAX. MIN. A 2.35 2.65 0.093 A1 0.1 0.3 0.004 B 0.33 0.51 0.013 C 0.23 0.32 0.009 D 10.1 10.5 0.398 E 7.4 7.6 0.291 e 1. 10.65 0.394 h 0.25 0.75 0.010 ...

  • Page 16

    ETC5054 - ETC5057 mm DIM. MIN. TYP. MAX. a1 0.51 B 0.77 1.65 b 0 8.5 e 2.54 e3 17.78 F 7.1 I 5.1 L 3.3 Z 1.27 16/18 inch MIN. TYP. MAX. 0.020 0.030 ...

  • Page 17

    DIM. MIN. TYP. MAX. MIN. A 9.78 10.03 0.385 B 8.89 9.04 0.350 D 4.2 4.57 0.165 d1 2.54 d2 0.56 E 7.37 8.38 0.290 e 1.27 F 0.38 G 0.101 M 1. ...

  • Page 18

    ... This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © 2000 STMicroelectronics – Printed in Italy – All Rights Reserved Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U ...