LM4875 datasheet(10/37 Pages) NSC

10 / 37 page

Control Interface Electrical Characteristics (Notes 1, 2) (Continued)

The following specifications apply for V

DD = 5V and VDD = 3V and 2.5V

≤ I2CV

≤ 5.5V, unless otherwise specified. Limits

apply for T

A = 25˚C.

Symbol

Parameter

Conditions

LM4857

Units

(Limits)

Typical

(Note 6)

Limits (Notes

7, 8)

Stop Condition time

100

ns (min)

Digital Input High Voltage

0.7 x I

2CVDD

V (min)

Digital Input Low Voltage

0.3 x I

2CV

V (max)

Note 1: All voltages are measured with respect to the GND pin unless otherwise specified.

Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given, however, the typical value is a good indication of device performance.

Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum

allowable power dissipation is PDMAX =(TJMAX -TA)/ θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4857 operating in Mode

3, 8, or 13 with VDD =5V, 8Ω stereo loudspeakers and 32Ω stereo headphones, the total power dissipation is 1.348W. θJA = 62˚C/W.

Note 4: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 5: Machine Model, 220pF - 240pF discharged through all pins.

Note 6: Typicals are measured at +25˚C and represent the parametric norm.

Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Note 9: Shutdown current and supply current are measured in a normal room environment. All digital input pins are connected to I2CVDD.

Note 10: The given

θJA is for an LM4857ITL mounted on a PCB with a 2in2 area of 1oz printed circuit board copper ground plane.

Note 11: “0dB gain” refers to the volume control gain setting of MIN,LIN, and RIN set at 0dB.

Note 12: The given

θJA is for an LM4857SP mounted on a PCB with a 2in2 area of 1oz printed circuit board ground plane.

LM4875 数据表(PDF) 10 Page - National Semiconductor (TI)

LM4875 数据表(HTML) 10 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

数据表下载