TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY

FREQUENCY (Hz)

100

1k

10k

0.001

0.01

0.1

1

10

0.0001

10

100k

Ω

OUTPUT POWER = 1W

OUTPUT POWER = 50mW

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY

FREQUENCY (Hz)

100

1k

10k

0.001

0.01

0.1

1

10

0.0001

10

100k

Ω

OUTPUT POWER = 1W

OUTPUT POWER = 200mW

TOTAL HARMONIC DISTORTION + NOISE

vs. FREQUENCY

FREQUENCY (Hz)

100

1k

10k

0.001

0.01

0.1

1

10

0.0001

10

100k

Ω

OUTPUT POWER = 250mW

OUTPUT POWER = 750mW

Typical Operating Characteristics

design, not production tested.

Note 2: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset

voltage when a practical load is connected to the amplifier. Guaranteed by design.

Note 4: Output power is specified by a combination of a functional output current test and characterization analysis.

Note 5: Measurement bandwidth for THD+N is 22Hz to 22kHz.

Note 6: Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC

Low-Cost, Mono/Stereo,

1.4W Differential Audio Power Amplifiers

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—3V Supply (continued)

Ω (MAX971_A),

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Power

475

mW

Total Harmonic Distortion Plus

Noise

THD+N

0.003

%

Thermal-Shutdown Threshold

+160

°C

Thermal-Shutdown Hysteresis

15

°C

Maximum Capacitive Drive

Bridge-tied capacitance

500

pF

Power-Up/Enable from

Shutdown Time

10

ms

Shutdown Time

3µs

Turn-Off Transient

(Note 6)

40

mV

Crosstalk

-85

dB