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LM4851ITL Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM4851ITL Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 22 page Electrical Characteristics (Notes 2, 8) (Continued) The following specifications apply for V DD= 3.0V, TA= 25˚C unless otherwise specified. Symbol Parameter Conditions LM4851 Units (Limits) Typical (Note 5) Limit (Note 6) THD+N Total Harmonic Distortion Plus Noise R OUT and LOUT; f = 1kHz P OUT = 20mW; RL =32 Ω 0.5 % (max) SPKR OUT; f = 1kHz P OUT = 300mW; RL =8 Ω 1.0 % (max) R OUT and LOUT; f = 20Hz to 20kHz P OUT = 20mW; RL =32 Ω 0.4 % SPKR OUT; f = 20Hz to 20kHz P OUT = 300mW; RL =4 Ω LM4851LQ 0.3 % SPKR OUT; f = 20Hz to 20kHz P OUT = 250mW; RL =8 Ω 0.3 % N OUT Output Noise A-weighted (Note 10) 29 µV PSRR Power Supply Rejection Ratio V RIPPLE = 200mVPP; f = 217Hz Input floating; Input referred 70 dB V RIPPLE = 200mVPP; f = 217Hz Input terminated into 50 Ω; Output referred 62 dB V IH Logic High Input Voltage 1.4 3.0 V (min) V (max) V IL Logic Low Input Voltage 0.4 V (max) Digital Volume Range (R IN and L IN) Input referred minimum gain Input referred maximum gain -40.5 +6 dB Digital Volume Stepsize 1.5 dB Stepsize Error ±0.5 dB Phone In Volume BTL gain from Phone In to SPKR OUT 6dB Phone In Volume BTL gain from Phone In to R OUT,LOUT 0dB Phone In Input Impedance 20 15 25 k Ω (min) k Ω (max) R IN and LIN 50 37.5 62.5 k Ω (min) k Ω (max) t ES Enable Setup Time (ENB) 20 ns (min) t EH Enable Hold Time (ENB) 20 ns (min) t EL Enable Low Time (ENB) 30 ns (min) t DS Data Setup Time (DATA) 20 ns (min) t DH Data Hold Time (DATA) 20 ns (min) t CS Clock Setup Time (CLK) 20 ns (min) t CH Clock Logic High Time (CLK) 50 ns (min) t CL Clock Logic Low Time (CLK) 50 ns (min) t CLK Clock Frequency DC 10 (min) MHz (max) Note 2: Absolute Maximum Rating indicate limits beyond which damage to the device may occur. Note 3: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Note 4: Human body model, 100pF discharged through a 1.5k Ω resistor. Note 5: Typical specifications are specified at +25˚C and represent the most likely parametric norm. Note 6: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis. www.national.com 5 |
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