CS43L22 datasheet(11/68 Pages) CIRRUS

11 / 68 page

DS792F1

CS43L22

Confidential Draft

10/7/08

ANALOG OUTPUT CHARACTERISTICS

Test conditions (unless otherwise specified): Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA; TA = +25°C;

Sample Frequency = 48 kHz; Measurement bandwidth is 20 Hz to 20 kHz; Test load RL = 10 kΩ, CL = 10 pF for the line output

(see Figure 2); Test load RL = 16 Ω, CL = 10 pF (see Figure 2) for the headphone output; HP_GAIN[2:0] = 011.

One-half LSB of triangular PDF dither is added to data.

Full-scale output voltage and power is determined by the gain setting, G, in register “Headphone Analog

Gain” on page 44. High gain settings at certain VA and VHP supply levels may cause clipping when the

audio signal approaches full-scale, maximum power output, as shown in Figures 18 - 21 on page 61.

VA = 2.5 V

VA = 1.8 V

Parameters (Note 3)

Min

Typ

Max

Min

Typ

Max

Unit

RL = 10 kΩ

Dynamic Range

18 to 24-Bit

A-weighted

unweighted

16-Bit

A-weighted

unweighted

Total Harmonic Distortion + Noise

18 to 24-Bit

0 dB

-20 dB

-60 dB

16-Bit

0 dB

-20 dB

-60 dB

-86

-75

-35

-86

-73

-33

-80

-29

-88

-72

-32

-88

-70

-30

-82

-26

RL = 16 Ω

Dynamic Range

18 to 24-Bit

A-weighted

unweighted

16-Bit

A-weighted

unweighted

Total Harmonic Distortion + Noise

18 to 24-Bit

0 dB

-20 dB

-60 dB

16-Bit

0 dB

-20 dB

-60 dB

-75

-35

-75

-73

-33

-69

-29

-75

-72

-32

-75

-70

-30

-69

-26

Other Characteristics for RL = 16 Ω or 10 kΩ

Output Parameters

Modulation Index (MI)

(Note 4)

Analog Gain Multiplier (G)

0.6787

0.6047

0.6787

0.6047

V/V

Full-scale Output Voltage (2•G•MI•VA) (Note 4)

Refer to Table “Headphone Output Power Characteris-

tics” on page 14

Vpp

Full-scale Output Power (Note 4)

Refer to Table “Headphone Output Power Characteristics” on

page 14

Interchannel Isolation (1 kHz)

Ω

10 k

Ω

Speaker Amp to HP Amp Isolation

Interchannel Gain Mismatch

0.1

0.25

0.1

0.25

Gain Drift

±100

ppm/°C

AC-Load Resistance (RL)

(Note 5)

Ω

Load Capacitance (CL)

(Note 5)

150

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