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T8502 Datasheet(PDF) 5 Page - Agere Systems |
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T8502 Datasheet(HTML) 5 Page - Agere Systems |
5 / 16 page Lucent Technologies Inc. 5 Data Sheet July 1998 T8502 and T8503 Dual PCM Codecs with Filters Electrical Characteristics (continued) dc Characteristics (continued) Table 3. Power Dissipation Power measurements are made at MCLK = 4.096 MHz with outputs unloaded and ASEL and GS[1:0] not connected. Clock and frame sync levels are +5 V and 0 V. Transmission Characteristics Table 4. Analog Interface Channels Operational Parameter Symbol Test Conditions Min Typ Max Unit 0 Standby Current IDDS MCLK present; FSX[1:0] = FSR[1:0] = 0 V — 5 8 mA 1 Partial Standby Current IDDP MCLK present; FS pulses present for one channel, FSX = FSR = 0 V for other channel — 10 16 mA 2 Powerup Current IDD1 MCLK, FS pulses present — 16 23 mA Parameter Symbol Test Conditions Min Typ Max Unit Input Resistance, VFXIN RVFXI 0.25 V < VFXI < 4.75 V 1.0 60 — M Ω Input Leakage Current, VFXIN IBVFXI 0.25 V < VFXI < 4.75 V — 0.04 2.4 µA dc Open-loop Voltage Gain, GSX AVOL — 5000 — — — Open-loop Unity Gain Bandwidth, GSX fO — 1 3 — MHz Load Capacitance, GSX CLX1 — — — 50 pF Load Resistance, GSX RLX1 — 10 — — k Ω Input Voltage, VFXIN VIX Relative to ground 2.25 2.35 2.5 V Load Resistance, VFRO RLVFRO — 2000 — — Ω Load Capacitance, VFRO CLVFRO — — — 100 pF Output Resistance, VFRO ROVFRO 0 dBm0, 1020 Hz PCM code applied to DR — — 20 Ω Standby mode FSX = FSR = 0 V for channel under test 3000 — 10000 Ω Output Voltage, VFRO VOR Alternating ± zero µ-law PCM code applied to DR 2.25 2.38 2.5 V Output Voltage, VFRO, Standby VORPD Standby mode FSX = FSR = 0 V for channel under test, no load 2.0 2.35 2.65 V Output Voltage Swing, VFRO VSWR RL = 2000 Ω 3.2 — — Vp-p |
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