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SSM4321 Datasheet(PDF) 5 Page - Analog Devices

Part # SSM4321
Description  Mono 2.9 W Class-D Audio Amplifier
PDF  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

SSM4321 Datasheet(HTML) 5 Page - Analog Devices

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Data Sheet
SSM4321
Rev. 0 | Page 5 of 24
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
GAIN CONTROL
Closed-Loop Gain
Gain
0
12
dB
Input Impedance
Z
IN
BCLK enabled, fixed input impedance
(0 dB to 12 dB)
80
kΩ
SHUTDOWN CONTROL
Turn-On Time
t
WU
From BCLK start
12.5
ms
Turn-Off Time
t
SD
From BCLK removal
5
µs
Output Impedance
Z
OUT
No BCLK
>100
kΩ
AMPLIFIER NOISE PERFORMANCE
Output Voltage Noise
e
n
f = 20 Hz to 20 kHz, inputs are
ac-grounded, gain = 6 dB, A-weighted
PVDD = 5.0 V
30
µV
PVDD = 3.6 V
30
µV
Signal-to-Noise Ratio
SNR
P
OUT = 1.3 W, RL = 8 Ω, A-weighted
101
dB
OUTPUT SENSING
Output Sampling Rate, TDM
f
S
LRCLK/FSYNC pulse rate
8
48
kHz
BCLK Frequency, TDM
f
BCLK
1 to 4 slots used
0.512
6.144
MHz
Voltage Sense Signal-to-Noise
Ratio
SNRV
A-weighted
77
dB
Voltage Sense Full-Scale Output
Voltage
V
FS
Amplifier voltage with 0 dBFS ADC
output
6
V
P
Voltage Sense Absolute Accuracy
1.5
%
Voltage Sense Gain Drift
T
A = 10°C to 60°C
1
%
Current Sense Signal-to-Noise
Ratio
SNRI
A-weighted
72
dB
Current Sense Full-Scale Input
Voltage
V
IS
I
SENSE converter voltage with 0 dBFS ADC
output
0.150
V
P
Current Sense Absolute Accuracy
3
%
Current Sense Gain Drift
T
A = 10°C to 60°C, ideal RSENSE
1
%
PVDD Sense Full-Scale Range
PV
FS
PVDD with full-scale ADC output
2
6
V
PVDD Sense Absolute Accuracy
3
%
Current and Voltage Sense
Linearity
From −80 dBr to 0 dBr
1
dB
ADC −3 dB Corner Frequency
f
C
Digital high-pass filter
Output f
S = 48 kHz
3.75
Hz
Output f
S = 24 kHz
1.875
Hz
DIGITAL INPUT/OUTPUT SPECIFICATIONS
Table 2.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
BCLK, FSYNC PINS
Ball D2 and Ball D3
Input Voltage High
V
IH
0.7 × IOVDD
3.6
V
Input Voltage Low
V
IL
−0.3
0.3 × IOVDD
V
Input Leakage Current High
I
IH
1
µA
Input Leakage Current Low
I
IL
1
µA
Input Capacitance
C
IN
5
pF
SDATAO/PDM_DATA PIN
Ball D1
Output Drive Strength
IOVDD = 1.5 V
3.5
mA
IOVDD = 1.8 V
4.5
mA



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