BelaSigna R262

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4

3.3 V supply voltage (unless noted differently). Parameters marked as screened are tested on each chip. Other parameters are qualified

for all process corners but not tested on every part.)

Parameter

Symbol

Test Conditions / Notes

Min

Typ

Max

Unit

Screened

DIGITAL MICROPHONE OUTPUT

DMIC input clock frequency

With preset 0 selected on

CLOCK_SEL (Note 3)

2.048

MHz

With preset 3 selected on

CLOCK_SEL (Note 3)

2.4

MHz

With preset 4 selected on

CLOCK_SEL (Note 3)

2.8

MHz

With preset 5 selected on

CLOCK_SEL (Note 3)

3.072

MHz

Clock duty cycle

Any clock configuration

40

50

60

%

Input clock jitter

Maximum allowed jitter on the

DMIC_CLK

10

ns

Clock to output transition time

DMIC_OUT

10

20

50

ns

ANALOG OUTPUT STAGE

Signal Range

Vout

One single ended DAC used

0

2

Vpp

Two DACs used as one

differential output

0

4

Vpp

Attenuator gain tolerance

−2

2

dB

Output impedance

Rout

@ 12 dB output attenuation

19

kW

l

@ 0 dB output attenuation

3

kW

Channel cross coupling

@ 1 kHz

−50

dB

Analog Filter cut−off frequency

LPF Enabled (default)

13.0

13.5

kHz

LPF Disabled

25

26

kHz

Analog Filter passband flatness

−1

1

dB

Analog filter stopband

attenuation

> 60 kHz

90

dB

Digital Filter cut−off frequency

Fs/2

kHz

Digital Filter cut−off stopband

attenuation

80

dB

Total Harmonic Distortion +

Noise (Peak value)

THDN

63

65

dB

l

Dynamic Range

DR

78

80

dB

l

Noise Floor

70

100

mV

l

DIRECT DIGITAL OUTPUT (available only through custom configuration)

Supply voltage

VBATRCVR

1.8

3.3

3.63

V

Signal Range

Vout

Differential Output @ 1 kHz

0

2*VBAT

RCVR

Vpp

Single ended Output @ 1 kHz

0

VBAT

RCVR

Vpp

Output Impedance

Rout

Load between

1 mA and 30 mA @ 0°C

2.5

10

W

Maximum Current

25

mA

Total Harmonic Distortion +

Noise (Peak value)

THDN

64

70

dB

l

3. Many other clock frequencies are available through custom configuration of the internal PLL and clocking subsystem. See later in this

document and in the BelaSigna R262 Communications and Configuration Guide for more information on custom mode usage.