LM4980SD datasheet(5/20 Pages) NSC

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Electrical Characteristics V

DD = 1.8V (Notes 1, 5) (Continued)

The following specifications apply for the circuit shown in Figure 2, unless otherwise specified. A

V = 0dB, RL =32

Ω.

Limits apply for T

A = 25˚C.

Symbol

Parameter

Conditions

LM4980

Units

(Limits)

Typical

Limit

(Note 6)

(Note 7)

Output Power (Note 9)

L =16

Ω,

THD+N = 1%, f = 1kHz, per channel

mW (min)

L =32

Ω,

THD+N = 1%, f = 1kHz, per channel

mW (min)

Output Voltage Noise

20Hz to 20kHz, A-weighted, Fig. 2

µV

RMS

THD+N

Total Harmonic Distortion + Noise

L =32

Ω,P

OUT = 10mW, f = 1kHz

0.03

Crosstalk

Freq = 1kHz, P

OUT = 9mW, RL =32

Ω

PSRR

Power Supply Rejection Ratio

RIPPLE = 200mVP-P sine wave

RIPPLE = 1kHz, CMIDCAP = 4.7µF,

MID Voltage is Ripple-Free

RIPPLE = 200mVP-P sine wave

RIPPLE = 217Hz, CMIDCAP = 4.7µF,

MID Voltage is Ripple-Free

CMRR

Common-Mode Rejection Ratio

Input coupling capacitors with 5%

tolerance, V

IN =VMID,

RIPPLE = 1kHz

WAKE-UP

Wake-up Time

MIDCAP = 4.7µF, Fig 2.

320

Control Logic High

1.5V

≤ V

≤ 3.3V

1.4V

V (min)

Control Logic Low

1.5V

≤ V

≤ 3.3V

0.4V

V (max)

Note 1: 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 2: The maximum power dissipation is dictated by TJMAX, θJA, and the ambient temperature TA must be derated at elevated temperatures. The maximum

allowable power dissipation is PDMAX =(TJMAX −TA)/ θJA. For the LM4980, TJMAX = 150˚C. For the θJAs, please see the Application Information section or the

Absolute Maximum Ratings section.

Note 3: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 4: Machine model, 200pF – 220pF discharged through all pins.

Note 5: All voltages are measured with respect to the ground (GND) pins unless otherwise specified.

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

Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Note 8: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.

Note 9: Output power is measured at the device terminals.

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