CS42L56 datasheet(19/92 Pages) CIRRUS

19 / 92 page

DS851F2

CS42L56

LINE OUTPUT CHARACTERISTICS

Test conditions (unless otherwise specified): Connections to the CS42L56 are shown in the “Typical Connection Diagrams” on

page 11; Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA, VCP Mode; GND = AGND = 0 V; TA = +25C;

Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz; Test load RL = 10 k CL = 150 pF (see Figure 6 on

page 21); Measurement signal path is SDIN to LINEOUTx.

Notes:

14. The analog gain setting (“Headphone Volume Control” on page 84 or “Line Volume Control” on

page 84) must be configured as indicated to achieve the specified output characteristics.

15. One LSB of triangular PDF dither is added to data.

16. VCP settings lower than VA reduces the headroom of the headphone amplifier. As a result, the speci-

fied THD+N performance at full-scale output voltage and power may not be achieved.

17. See Figure 6 and Figure 7. Refer to “Parameter Definitions” on page 91.

18. Response is clock dependent and will scale with Fs. Note that the response plots (Figures 45 to Note 48

on page 90) have been normalized to Fs and can be denormalized by multiplying the X-axis scale by Fs.

19. Measurement bandwidth is from Stopband to 3 Fs.

VA = 2.5 V

VA = 1.8 V

Parameter (Note 15)

Min

Typ

Max

Min

Typ

Max

Unit

(+2 dB Analog Gain) (Note 14)

Dynamic Range

18 to 24-Bit

A-weighted

unweighted

16-Bit

A-weighted

unweighted

Total Harmonic Distortion + Noise

(Note 16)

18 to 24-Bit

0 dB

-20 dB

-60 dB

16-Bit

0 dB

-20 dB

-60 dB

-84

-76

-36

-82

-74

-34

-78

-30

-86

-74

-34

-84

-72

-32

-80

-28

Full-scale Output Voltage

(Note 17) 1.50•VA 1.58•VA 1.71•VA 1.50•VA 1.58•VA 1.71•VA

VPP

Other Characteristics

Interchannel Isolation

(Note 17)

-90-

Interchannel Gain Mismatch

(Note 17)

0.1

0.32

0.1

0.32

Output Offset

Mute

(Note 17)

0dB Analog Gain

0.5

3.6

1.0

±14.6

0.5

2.8

1.0

±10.6

Gain Drift

(Note 17)

-±100-

ppm/°C

Output Impedance

-100

100-



Load Resistance (RL)

(Note 17)



Load Capacitance (CL)

(Note 17)

150

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