SSM3525 datasheet(6/60 Pages) AD

6 / 60 page

SSM3525

Data Sheet

Rev. A | Page 6 of 60

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

SHUTDOWN CONTROL

Turn-On Time

tWU

I2S mode

Turn-Off Time

tSD

500

µs

Output Impedance

ZOUT

100

kΩ

NOISE PERFORMANCE1

Output Voltage Noise

f = 20 Hz to 20 kHz, A weighted, PVDD = 12 V

37.5

µV rms

f = 20 Hz to 20 kHz, A weighted, PVDD = 17 V

µV rms

Signal-to-Noise Ratio

SNR

POUT = 8.2 W, RL= 8 Ω, A weighted, PVDD = 12 V

107

POUT = 31 W, RL= 4 Ω, A weighted, PVDD = 17 V

107

OUTPUT SENSING

Output Sampling Rate

(TDM)

FSYNC pulse rate

192

KHz

PDM Gain Mapping

Voltage to current (V/I) sense PDM output with full-scale

input

0.71

Voltage Sense Signal-to-

Noise Ratio

SNRV

Voltage Sense Full-Scale

VFS

Output voltage at 0 dBFS output from ADC

±18

VPEAK

Voltage Sense Absolute

Accuracy

Temperature = 0°C to 70° C, output >−40 dBFS

±1.5

Voltage Sense Gain Drift

Temperature = 0°C to 70° C, output >−40 dBFS

0.5

Current Sense SNR

SNRI

Current Sense Full-Scale

ISENSE,FS

Peak current with 0 dBFS output from ADC

6.96

APEAK

Current Sense Absolute

Accuracy

Temperature = 0°C to 70° C, output >−40 dBFS

±2

Current Sense Gain Drift

Temperature = 0°C to 70° C, output >−40 dBFS

±0.5

Voltage Sense over Current

Sense Ratio Drift

Temperature = 0°C to 70° C, output >−40 dBFS

±0.5

PVDD Sense Full-Scale

Range

PVFS

PVDD with full-scale ADC output

PVDD Sense Absolute

Accuracy

Temperature = 0°C to 70°C

LSBs

Current and Voltage

Sense Linearity

From −40 dBr to 0 dBr

±0.5

The noise performance minimum and maximum limits are based on the bench data for −40°C to +85°C.

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