SNAS470D datasheet(5/24 Pages) TI

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LM48100Q

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SNAS470D – OCTOBER 2008 – REVISED MARCH 2013

Audio Amplifier Electrical Characteristics VDD = 5.0V

(1)(2) (continued)

The following specifications apply for Programmable Gain = 0dB, RL = 8Ω, f = 1kHz, unless otherwise specified. Limits apply

for TA = 25°C.

LM48100Q

Typical

Room

Extended

Units

Symbol

Parameter

Conditions

(3)

Temp

Temp Limits

(Limits)

Limits

(4) (5)

(4)

SNR

Signal-to-Noise-Ratio

POUT = TBDmW, f = 1kHz

104

∈OS

Output Noise

AV = 0dB, A-weighted Filter

μV

IOUT(FAULT)

FAULT Output Current

FAULT = 0, VOUT(FAULT)= 0.4V

Short between either OUTA to VDD or

Output to Supply Short

GND, or OUTB to VDD or GND

RFAULT

Circuit Detection Threshold

Short Circuit

Ω (min)

Open Circuit

7.5

Ω (max)

Short between both OUTA and OUTB to

Output to Supply Short

VDD or GND

RFAULT

Circuit Detection Threshold

Short Circuit

Ω (min)

Open Circuit

Ω (max)

Open Circuit Detection

100

Ω (min)

ROPEN

Open circuit between OUTA and OUTB

Threshold

200

Ω (max)

Output to Output Short

Ω (min)

RSHT

Short circuit between OUTA and OUTB

Circuit Detection Threshold

Ω (max)

ISHTCKT

Short Circuit Current Limit

1.47

1.67

A (max)

Thermal Shutdown

TSD

170

°C

Threshold

tDIAG

Diagnostic Time

Audio Amplifier Electrical Characteristics VDD = 3.6V

(1) (2)

The following specifications apply for Programmable Gain = 0dB, RL = 8Ω, f = 1kHz, unless otherwise specified. Limits apply

for TA = 25°C.

LM48100Q

Typical

Room

Extended

Units

Symbol

Parameter

Conditions

(3)

Temp

(Limits)

Limits

(4)

(4) (5)

VIN = 0V, Both channels active

Quiescent Power Supply

IDD

RL = 8Ω

3.8

8.5

10.8

mA (max)

Current

RL = ∞

3.6

mA (max)

Diagnostic Mode Quiescent

IDD

Diagnostic Mode Enabled

11.7

14.5

mA (max)

Power Supply Current

ISD

Shutdown Current

Shutdown Enabled

0.01

µA (max)

Differential Output Offset

VOS

VIN = 0V, RL = 8Ω

8.8

mV (max)

Voltage

TWU

Wake-Up Time

Time from shutdown to audio available

11.5

ms (max)

(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 specified.

(4)

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

(5)

Min/max specification limits specified for TA = –40°C to 105°C.

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