SNAS470D datasheet(4/24 Pages) TI

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LM48100Q

SNAS470D – OCTOBER 2008 – REVISED MARCH 2013

www.ti.com

Operating Ratings

(1) (2)

Temperature Range

TMIN ≤ TA ≤ TMAX

−40°C ≤ TA ≤ +105°C

Supply Voltage

VDD and PVDD

3.0V

≤ VDD ≤ 5.5V

I2C Supply Voltage

I2CVDD

1.8V

≤ I2CVDD ≤ 5.5V

I2CVDD ≤ VDD

(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.

Audio Amplifier Electrical Characteristics VDD = 5.0V

(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

Temp Limits

(Limits)

Limits

(4) (5)

(4)

VIN = 0V, Both channels active

Quiescent Power Supply

IDD

RL = 8Ω

4.4

10.8

mA (max)

Current

RL = ∞

4.2

7.9

mA (max)

Diagnostic Mode Quiescent

IDD

Diagnostic Mode Enabled, RL = ∞

12.5

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

11.6

ms (max)

dB (max)

Minimum Gain Setting

–54

±1.0

±2.0

dB (min)

Gain

dB (max)

Maximum Gain Setting

±1.0

dB (min)

Mute

Mute Attenuation

–80

–77

–74

dB (max)

11.5

Ω (min)

AV = 18dB

12.5

13.5

Ω (max)

RIN

Input Resistance

Ω (min)

AV = –54dB

110

120

130

Ω (max)

RL = 8Ω, f = 1kHz

Output Power

THD+N = 10%

1.6

THD+N = 1%

1.3

1.05

0.96

W (min)

Total Harmonic Distortion +

THD+N

PO = 850mW, f = 1kHz, RL = 8Ω

0.04

Noise

VRIPPLE = 200mVP-P Sine, Inputs AC GND, CIN_= 1μF, input referred, CBIAS = 2.2μF

Power Supply Rejection

PSRR

f = 217Hz

dB (min)

Ratio

f = 1kHz

(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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