LM49321, LM49321RLEVAL

SNAS457C – SEPTEMBER 2008 – REVISED MAY 2013

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(1) (2)

The following specifications apply for the circuit shown in Figure 41 with all programmable gain set at 0dB, unless otherwise

LM49321

Units

Parameter

Test Conditions

(Limits)

13

18

mA (max)

Headphone Mode Only, OCL, DAC off

4.6

6.25

mA (max)

Headphone Mode Only, OCL, DAC Off

STEREO_OUTPUT_ONLY = 1,

4

5.5

mA

STEREO_INPUT_ONLY = 1

Headphone Mode only OCL, DAC On,

Supply Current

OSR = 64, DAC_INPUT_ONLY = 1

7.5

10

mA (max)

STEREO_OUTPUT_ONLY = 1

Mono Loudspeaker Mode Only

6.5

11.5

mA (max)

Mono Earpiece Speaker Mode Only

MONO_ONLY = 1 (register 01h)

3.7

5

mA (max)

MONO_ONLY = 0

3.3

mA

10

13.5

mA (max)

Shutdown Current

0.6

1

μA (max)

Speaker; THD = 1%; f = 1kHz, 8

Ω BTL

420

370

mW (min)

Output Power

Headphone; THD = 1%; f = 1kHz, 32

Ω SE

27

24

mW (min)

Earpiece; THD = 1%; f = 1kHz, 32

Ω BTL

45

40

mW (min)

Full Scale DAC Output

2.4

0.04

%

THD+N

Total Harmonic Distortion+Noise

0.01

%

0.04

%

Speaker

10

55

mV (max)

Offset Voltage

Earpiece

8

50

mV (max)

Headphone (OCL)

8

15

mV (max)

Output Noise

A-weighted; 0dB gain

Table 1

PSRR

Power Supply Rejection Ratio

Table 2

Crosstalk

–60

dB

35

ms

Wake-Up Time

85

ms

CMRR

Common-Mode Rejection Ratio

56

dB

(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 specified 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)

product characterization and are not ensured.

(4)

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

(5)

Enabling mono bit (MONO_ONLY in Output Control Register 01h) will save 400

μA (typ) form specified current.

(6)

Shutdown current is measured in a normal room environment.

6

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