WM1811A datasheet(14/328 Pages) WOLFSON

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WM1811A

Production Data

PD, November 2013, Rev 4.1

INPUT PIN RESISTANCE

Test Conditions

TA = +25

oC.

With the exception of the condition(s) noted above, the following electrical characteristics are valid across the full range of

recommended operating conditions.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PGA Input Resistance

Differential Mode

See note 5

See “Applications

Information” for details of

Input resistance at all

PGA Gain settings.

Gain = -16.5dB

(INnx_VOL=00h)



Gain = 0dB

(INnx_VOL=0Bh)



Gain = +30dB

(INnx_VOL=1Fh)

1.3



PGA Input Resistance

Single-Ended Mode

See note 5

See “Applications

Information” for details of

Input resistance at all

PGA Gain settings.

Gain = -16.5dB

(INnx_VOL=00h)



Gain = 0dB

(INnx_VOL=0Bh)



Gain = +30dB

(INnx_VOL=1Fh)

2.5



Line Input Resistance

See note 5

IN1LP to MIXINL, or

IN1RP to MIXINR

Gain = -12dB

(IN1xP_MIXINx_VOL=001)



IN1LP to MIXINL, or

IN1RP to MIXINR

Gain = 0dB

(IN1xP_MIXINx_VOL=101)



IN1LP to MIXINL, or

IN1RP to MIXINR

Gain = +6dB

(IN1xP_MIXINx_VOL=111)

9.8



IN1LP to MIXINL, or

IN1RP to MIXINR

Gain = +15dB

(IN1xP_MIXINx_VOL=111,

IN1xP_MIXINx_BOOST=1)

3.7



IN1LPto SPKMIXL, or

IN1RP to SPKMIXR

(SPKATTN = -12dB)



IN1LPto SPKMIXL, or

IN1RP to SPKMIXR

(SPKATTN = 0dB)



IN2LN, IN2RN, IN2LP or

IN2RP to MIXOUTL or

MIXOUTR

Gain = -9dB

(*MIXOUTx_VOL=011)



IN2LN,IN2RN, IN2LP or

IN2RP to MIXOUTL or

MIXOUTR

Gain = 0dB



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