LM48821, LM48821TLEVAL

SNAS354A – JUNE 2007 – REVISED MAY 2013

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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1) (2) (3)

Supply Voltage

4.5V

Storage Temperature

−65°C to +150°C

Input Voltage

−0.3V to VDD +0.3V

Power Dissipation (4)

Internally Limited

ESD Susceptibility (5)

2000V

ESD Susceptibility (6)

200V

Junction Temperature

150°C

Thermal Resistance

θJA (typ) - (DSBGA)

(4)

105°C/W

(1)

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

(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 specify performance limits. Electrical Characteristics state DC and AC electrical specifications

under particular test conditions which ensure specific performance limits. This assumes that the device is within the Operating Ratings.

Specifications are for parameters where no limit is given, however, the typical value is a good indication of device performance.

(3)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(4)

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 LM48821, see power derating currents for more information.

(5)

Human body model, 100pF discharged through a 1.5k

Ω resistor.

(6)

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

Operating Ratings

Temperature Range

TMIN ≤ TA ≤ TMAX

−40°C ≤ TA ≤ +85°C

Supply Voltage

PVDD and SVDD

2.0V

≤ VDD ≤ 4.0V

I2CVDD

1.8V

≤ I2CVDD ≤ 4.0V

Audio Amplifier Electrical Characteristics VDD = 3V

(1)

The following specifications apply for VDD = 3V, RL = 16Ω, AV = 0dB, unless otherwise specified. Limits apply for TA = 25°C.

LM48821

Units

Symbol

Parameter

Conditions

Typical (2)

Limits

(Limits)

(3) (4)

VIN = 0V, inputs terminated,

3.0

4.5

mA (max)

both channels enabled

IDD

Quiescent Power Supply Current

VIN = 0V, inputs terminated,

2.0

3.0

mA

one channel enabled

ISD

Shutdown Current

Right and Left Enable bits set to 0

0.1

1.2

µA (max)

VOS

Output Offset Voltage

RL = 32Ω

0.5

2.5

mV (max)

[B0:B4] = 00000

–76

dB

AV

Volume Control Range

[B0:B4] = 11111

+18

dB

ΔAV

Channel-to-Channel Gain Match

±0.015

dB

AV-MUTE

Mute Gain

–76

dB

5

k

Ω (min)

Gain = 18dB

9

15

k

Ω (max)

RIN

Input Resistance

Gain = –76dB

81

k

Ω

(1)

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

(2)

Typicals are measured at +25°C and represent the parametric norm.

(3)

Limits are specified to AOQL (Average Outgoing Quality Level).

(4)

Data sheet min and /max specification limits are specified by design, test, or statistical analysis.

4

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