SSM4567ACBZ-R7 datasheet(5/52 Pages) AD

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SSM4567

Data Sheet

Rev. 0 | Page 5 of 52

SPECIFICATIONS

VBAT = 3.6 V, IOVDD = 1.8 V, TA = 25°C, RL = 8 Ω + 33 µH, VBST = 5.1 V, 20 Hz to 20 kHz bandwidth (BW), unless otherwise noted. In

PDM operation, PDM clock = 3.072 MHz; for PCM operation, fS = 48 kHz.

Table 1.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

AMPLIFIER CHARACTERISTICS

Output Power/Channel

POUT

RL = 8 Ω, THD = 1%, f = 1 kHz,

1.43

RL = 8 Ω, THD = 10%, f = 1 kHz

1.81

RL = 4 Ω, THD = 1%, f = 1 kHz

2.49

RL = 4 Ω, THD = 10%, f = 1 kHz

3.17

System Efficiency

PO = 1 W, VBAT = 3.6 V, RL = 8 Ω

89.7

Total Harmonic Distortion +

Noise

THD + N

f = 1 kHz, PO = 1 W, RL = 8 Ω

0.031

f = 1 kHz, PO = 0.5 W, RL = 8 Ω

0.025

Output Voltage Noise

VBST = 5.1 V, 20 kHz BW, dither input, A-weighted

21.7

µV rms

Signal-to-Noise Ratio

SNR

A-weighted, referred to output at 1% THD

104

Average Switching Frequency

fSW

300

kHz

Full-Scale Output Voltage

0 dBFS PCM or −6 dBFS PDM input

5.17

V peak

Differential Output Offset

Voltage

VOOS

1.1

POWER SUPPLIES

Supply Voltage Range

VBAT

2.5

3.6

5.2

IOVDD

1.62

1.8

1.98

Power Supply Rejection Ratio

DC PSRR

Dither input

PSRRGSM

Dither input, VRIPPLE = 100 mV on VBAT at 217 Hz

Quiescent Supply Current

VBAT

IVBAT

VBAT = 3.6 V

4.86

IOVDD

IVDD

IOVDD = 1.8 V, PDM clock = 3.072 MHz

1.28

Shutdown Current

VBAT

IVBAT

VBAT = 3.6 V, no input clocks

0.2

µA

IOVDD

IVDD

IOVDD = 1.8 V, no input clocks

2.8

µA

SHUTDOWN CONTROL

Turn-On Time

tWU

Turn-Off Time

tSD

µs

Output Impedance

ZOUT

kΩ

CLOCKING AND SAMPLE RATES

Input and Output Sampling

Rate, PCM

LRCLK rate

192

kHz

BCLK Frequency, PCM

fBCLK

2.048

24.576

MHz

Input Sampling Rate, PDM

fDAC_PDM_CLK

2.048

6.144

MHz

Output Sampling Rate, PDM

fSNS_PDM_CLK

1.024

6.144

MHz

OUTPUT SENSING

Voltage Sense Signal-to-

Noise Ratio

SNRV

A-weighted

Voltage Sense Full Scale

VFS

Output voltage at 0 dBFS PCM/−6 dBFS PDM

output from ADC

V peak

Voltage Sense Absolute

Accuracy

1.5

Voltage Sense Gain Drift

Temperature, TA = 10°C to 60°C

Current Sense Signal-to-Noise

Ratio

SNRI

A-weighted

Current Sense Input Full-Scale

Voltage

IFS

Voltage across sense resistor with 0 dBFS PCM/

−6 dBFS PDM output from ADC

1.78

A peak

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