LM48823, LM48823TLEVAL

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SNAS464E – JUNE 2008 – REVISED OCTOBER 2010

AUDIO AMPLIFIER ELECTRICAL CHARACTERISTICS VDD = 4.2V

(1) (2)

The following specifications apply for AV = 6dB, RL = 2.2μF+15Ω, C1 = C2 = 2.2μF, f = 1kHz, unless otherwise specified.

Limits apply for TA = 25°C.

LM48823

Units

Symbol

Parameter

Conditions

Typical

Limits

(Limits)

(3)

(4)

Quiescent Power Supply

VIN = 0V, RL = ∞

IDD

3.3

4.3

mA (max)

Current

ISD

Shutdown Current

Shutdown Enabled

0.01

1

µA (max)

Differential Output Offset

VOS

VIN = 0V

0.5

3

mV (max)

Voltage

VIH

Logic High Input Threshold

RESET

1.4

V (min)

VIL

RESET

0.4

V (max)

Minimum Gain Setting

–70

dB

AV

Gain

Maximum Gain Setting

24

dB

9

7

k

Ω (min)

Maximum Gain Setting

9

11

k

Ω (max)

RIN

Input Resistance

80

64

k

Ω (min)

Minimum Gain Setting

80

96

k

Ω (max)

f = 1kHz

5.4

VRMS

VO

Output Voltage

RL = 2.2μF+15Ω, THD+N = 1%

f = 5kHz

3.1

VRMS

Total Harmonic Distortion + VO = 4VRMS

THD+N

0.015

%

Noise

VRIPPLE = 200mVP-P Sine, Inputs AC

f = 217Hz

93

82

dB (min)

Power Supply Rejection

PSRR

GND, CIN = 1μF, input referred

Ratio

f = 1kHz

93

dB

POUT = 40mW, RL = 16Ω

SNR

Signal-to-Noise-Ratio

119

dB

f = 1kHz

∈OS

Output Noise

AV = 4dB, Input Referred, A-weighted Filter

5.5

μV

TWU

Wake-Up Time

200

μs

(1)

“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of

device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or

other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating

Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All

voltages are measured with respect to the ground pin, unless otherwise specified.

(2)

The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as

otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and

are not ensured.

(3)

Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of

product characterization and are not ensured.

(4)

Datasheet min/max specification limits are specified by test or statistical analysis.

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