T7503 Agere Systems, T7503 Datasheet
T7503
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T7503 Summary of contents
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... PCM timing is defined by a single frame sync pulse. This device operates in a delayed timing mode (digital data is valid one clock cycle after frame sync goes high). The T7503 is packaged in a 20-pin SOJ. FILTER PCM ENCODER ...
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... T7503 Dual PCM Codec with Filters Functional Description The T7503 has one frame sync (FS) input that determines transmit and receive data timing for both channels. The width of the FS pulse determines the order of the two channels on the PCM buses nominally one MCLK period wide (see Figure 5), the data for channel 0 is fi ...
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... MCLK remains active, then the device fully powers down. An internal pull-down de- vice is included on FS. VCM0 7 O Voltage Common Mode . 2.4 Vdc. VCM1 indicates a pull-down device is included on this lead. Lucent Technologies Inc. T7503 Dual PCM Codec with Filters Name/Function serves both analog DD (or greater) (or great- 3 ...
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... T7503 Dual PCM Codec with Filters Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability ...
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... Output Resistance Output Voltage Output Leakage Current Power- R down Output Voltage Swing Lucent Technologies Inc. T7503 Dual PCM Codec with Filters (continued) Test Conditions MCLK present and FS 0.4 V MCLK, FS pulse present Symbol Test Conditions R VFxI = 2.4 V VFXI I VFxI = 2.4 V BVFXI — ...
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... T7503 Dual PCM Codec with Filters Transmission Characteristics ac Transmission Characteristics Unless otherwise noted, the analog input dBm0, 1020 Hz sine wave; the input amplifier is set for unity gain. The digital input is a PCM bit stream equivalent to that obtained by passing a 0 dBm0, 1020 Hz sine wave through an ideal encoder ...
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... Figure 4 shows the region of operation for encoder signal levels above the reference input power (0 dBm0 Lucent Technologies Inc. T7503 Dual PCM Codec with Filters (continued) (continued) Symbol Test Conditions 1600 500 Hz—600 600 Hz—800 800 Hz— ...
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... T7503 Dual PCM Codec with Filters Transmission Characteristics ac Transmission Characteristics Table 9. Noise Parameter Transmit Noise -Law Receive Noise -Law Noise, Single Frequency Power Supply Rejection Transmit Power Supply Rejection Receive Spurious Out-of-Band Signals Relative to Input R Table 10. Receive Gain Relative to Gain at 1.02 kHz ...
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... Vrms for channel under test dBm0 code level on D IN) can be significantly affected by parasitic capacitive feeds from GS X above 10 k per Table 4) to minimize crosstalk. X T7503 Dual PCM Codec with Filters Min Typ Max — — – — ...
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... T7503 Dual PCM Codec with Filters Timing Characteristics Table 14. Clock Section (See Figures 5 and 6.) Symbol tMCHMCL1 Clock Pulse Width tCDC Duty Cycle, MC tMCH1MCH2 Clock Rise and tMCL2MCL1 Fall Time Table 15. Transmit Section (See Figures 5 and 6.) Symbol tMCHDV Data Enabled on TS Entry ...
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... BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 tMCLDV BIT BIT BIT BIT BIT T7503 Dual PCM Codec with Filters tMCHDZ CH1 BIT 8 BIT 1 BIT 2 BIT 3 BIT 8 BIT BIT BIT BIT ...
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... T7503 Dual PCM Codec with Filters Applications Figure 7 shows one possible analog connection. Fully differential structures used for the inputs minimize the noise gain from the internal 2.4 V bias voltage to the output of the single-ended transmitter op amp. The forward path gain is G, and by using resistors on the positive side that are a factor of 1/( those on the negative side, the microphone and transformer feeds are kept well balanced ...
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... Outline Diagram Controlling dimensions are in inches PIN #1 IDENTIFIER ZONE 1.27 TYP Package Number Description of Pins (N) SOJ (Small 20 Outline, J-Lead) Lucent Technologies Inc. T7503 Dual PCM Codec with Filters B H SEATING PLANE 0.10 0.51 MAX 0.79 MAX Package Dimensions Maximum Maximum Width Length Without Leads (L) (B) 12.95 7.62 ...
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... T7503 Dual PCM Codec with Filters Ordering Information Device Code Package T - 7503 - - - EL 20-Pin SOJ 14 Temperature Comcode – +85 C 107648925 Data Sheet February 1998 Lucent Technologies Inc. ...
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... Data Sheet February 1998 Notes Lucent Technologies Inc. T7503 Dual PCM Codec with Filters 15 ...
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... T7503 Dual PCM Codec with Filters For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro E-MAIL: docmaster@micro.lucent.com U.S.A.: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte ...