CS43131 datasheet(19/156 Pages) CIRRUS

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DS1155F1

CS43131

3 Characteristics and Specifications

Low frequency impedance range

—

1200



Relative impedance measurement capability 1

—

–12 2

—

+12

Impedance measurement accuracy 3

Gain error

Offset

—

–10

–1

—

+10



1.Impedance measurement range is relative to low-frequency HP load impedance measured.

2.Or 4

, whichever is greater.

3.Accuracy is referred to reported impedance.

Table 3-8. Alternate Headphone Path

Test conditions (unless specified otherwise): Fig. 2-1 shows CS43131 connections; GNDD = GNDCP = GNDA = 0 V; voltages are with respect to

ground; typical performance data taken with VP = 3.6 V, VCP = VA = 1.8 V, VL = VD = 1.8 V; min/max performance data taken with VP = 3.6 V,

VCP = 1.8 V, VA = 0 V, VL = VD = 1.8 V; RL = 32 ; TA = +25°C; measurement bandwidth is 20 Hz–20 kHz; MCLK_SRC_SEL = 10, PDN_XTAL = 1.

Parameters

Symbol

Minimum

Typical Maximum Units

Switch on characteristics

(PDN_HP = 1

HP_IN_EN = 1)

Signal range when switch on 1

1.When switch is on, maximally allowable voltage applied to HPINx pins.

VINAI

—

3.00

Vpp

THD+N with 32

 @ 2.82 Vpp

—

–103

—

Interchannel isolation

217 Hz

1 kHz

20 kHz

—

104

—

110

105

—

HPINx turn-on time 2

2.HPINx turn-on time is measured when setting HP_IN_EN = 1. I2C ACK signal is received to when the signal appears on the HP out. MCLK_SRC_

SEL = 00, PDN_XTAL = 0, MCLK_INT = 1. For EXT_VCPFILT = 1, VCP_FILT

± has been properly charged to expected nominal values.

EXT_VCPFILT = 1

EXT_VCPFILT = 0

tHPIN_ON

—

1.1

s

Switch off characteristics

(PDN_HP = 1,

HP_IN_EN = 0)

Analog signal range when switched off 3,4

3.When switch is off, maximally allowable voltage applied to HPINx pins.

4.Before switch off event, it is required HPINx signal is within this range before the switch is turned off. When the switch is in off state, HPINx signal

cannot exceed this specified range.

VINOFF

——

0.3

Turn-off time 5

5.HPINx turn-off time is measured when HP_IN_EN = 0 ACK signal is received to when the signal disappears from the HP out. This spec also applies

when register settings are: MCLK_SRC_SEL = 00, PDN_XTAL = 0, MCLK_INT = 1.

tHPIN_OFF

——

s

Off isolation 6

6.Off isolation specification is measured with VINOFF = 0.1 Vp input.

217 Hz

1 kHz

20 kHz

—

120

100

—

Table 3-9. Combined DAC Digital, On-Chip Analog and HPOUTx Filter Characteristics

Test conditions (unless specified otherwise): The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired

sample rate by multiplying the given characteristic by Fs. Single-Speed Mode refers to 32-, 44.1-, and 48-kHz sample rates. Double-Speed Mode refers

to 88.2- and 96-kHz sample rates. Quad-Speed Mode refers to 176.4- and 192-kHz sample rates. Octuple-Speed Mode refers to 352.8- and 384-kHz

sample rates. MCLK_INT is an integer multiple of Fs; HPF disabled; no DC offset applied; group delay does not include serial port delay.

Parameter

Minimum Typical Maximum Units

Fast Roll-Off

(FILTER_SLOW_FASTB =0)

Single-Speed Mode 1

Passband 2

to –0.01-dB corner

to –3-dB corner

attenuation @ Fs/2

8.44 3

—

0.4535 4

0.482

—

Passband ripple 10 Hz to –0.01-dB corner 5

–0.01

—

+0.01

Stopband

0.547

—

Stopband attenuation 6

110

—

Group delay (linear phase)

PHCOMP_LOWLATB = 1

—

39.5/Fs 7

—s

Group delay (minimum phase)

PHCOMB_LOWLATB = 0

—

6.3/Fs 8

—s

Deemphasis error 9

(Relative to 1 kHz)

Fs = 44.1 kHz

—

±0.3

Table 3-7. Headphone Load Measurement (Cont.)

Test conditions (unless specified otherwise): Fig. 2-1 shows CS43131 connections; GNDD = GNDCP = GNDA = 0 V; voltages are with respect to

ground; typical performance data taken with VP = 3.6 V, VCP = VA = 1.8 V, VL = VD = 1.8 V; min/max performance data taken with VP = 3.6 V,

VCP = VA = 1.8 V, VL = VD = 1.8 V; TA = +25°C. MCLK_INT = 1, PDN_XTAL = 0, and MCLK_SRC_SEL = 00 (crystal frequency fXTAL = 22.5792 MHz)

Parameters

Symbol

Minimum

Typical Maximum Units

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