DA7212 datasheet(15/136 Pages) RENESAS

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Ultra-Low Power Stereo Codec

DA7212 Revision 3.6

Nov 1, 2024

CFR011-120-00

Page 15

Table 9: Input mixing units

(MIC1_P/MIC1_N/MIC2_P/MIC2_N/AUX_L/AUX_R ) to ADC_L/ADC_R

Parameter

Description

Conditions

Min

Typ

Max

Unit

VMAX

Full-scale input signal

Single-ended

Differential

MIC_1/2_AMP =

AUX_L/R_AMP =

MIXIN_L/R = 0 dB

0.8 × VDD_A

1.6 × VDD_A

VPP

RIN

Input resistance

MIC, single-ended

AUX

kΩ

CIN

Input capacitance

Amplitude ripple

20 Hz to 20 kHz

-0.5

+0.5

Programmable gain

MIC_1_AMP and

MIC_2_AMP

AUX_L_AMP and

AUX_R_AMP

MIXIN_L and MIXIN_R

-6

-54

-4.5

Programmable gain step size

MIC_1_AMP and

MIC_2_AMP

AUX_L_AMP and

AUX_R_AMP

MIXIN_L and MIXIN_R

1.5

Absolute gain accuracy

0 dB @ 1 kHz

-1.0

+1.0

Left/Right gain mismatch

20 Hz to 20 kHz

-0.1

+0.1

Gain step error

20 Hz to 20 kHz

-0.1

+0.1

Input noise level

Inputs connected to GND,

A-weighted, input-referred,

measured @ ADC output

MIC_1/2_AMP = 24 dB

AUX_L/R_AMP = 15 dB

6.5

µVRMS

PSRR with

respect to

VDD_A

Power supply rejection ratio

Single-ended input

20 Hz to 2 kHz

20 kHz

Differential input

20 Hz

– 2 kHz

2 kHz

– 20 kHz

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