CS4525-CNZ Cirrus Logic Inc, CS4525-CNZ Datasheet - Page 87

• Manufacturer Part Number: CS4525-CNZ
• Description: IC AMP AUDIO PWR 30W QUAD 48QFN
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r
• Type: Class Dr

Specifications of CS4525-CNZ

• Output Type: 2-Channel (Stereo) or 4-Channel (Quad)
• Package / Case: 48-QFN
• Max Output Power X Channels @ Load: 30W x 1 @ 4 Ohm; 15W x 2 @ 8 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: ADC, Depop, I²C, I²S, Mute, PWM, Short-Circuit and Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Product: Class-D
• Output Power: 30 W
• Thd Plus Noise: 10 %
• Operating Supply Voltage: 2.5 V to 5 V
• Supply Current: 54 mA
• Maximum Power Dissipation: 180 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Audio - Load Impedance: 4 Ohms, 6 Ohms, 8 Ohms
• Audio Load Resistance: 8 Ohms, 4 Ohms
• Minimum Operating Temperature: 0 C
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.375 V
• Amplifier Class: D
• No. Of Channels: 4
• Supply Voltage Range: 8V To 18V
• Load Impedance: 4ohm
• Operating Temperature Range: 0°C To +70°C
• Amplifier Case Style: QFN
• No. Of Pins: 48
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1586 - REFERENCE BOARD FOR CS4525 PWM
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1264

DS726PP2
9.17
9.17.1 Limiter Release Rate (RRate[5:0])
9.18
9.18.1 Enable Thermal Limiter (EnThLim)
9.18.2 Limiter Attack Rate (ARate[5:0])
Reserved
EnThLim
7
7
Limiter Configuration 2 (Address 5Dh)
Limiter Configuration 3 (Address 5Eh)
Default = 111111
Function:
Sets the rate at which the limiter releases the digital attenuation from levels below the minimum setting in
the limiter threshold register.
The limiter release rate is a function of the sampling frequency, Fs, and the soft and zero cross setting.
Default = 0
Function:
When set, enables the thermal limiter function. The thermal limiter function adds an additional -3dB of at-
tenuation to the min and max settings of the peak signal limiter the first time a thermal warning is detected
after the thermal limiter function has been enabled. For more details, see the
page
Default = 000000
Function:
Sets the rate at which the limiter attenuates the analog output from levels above the maximum setting in
the limiter threshold register. The limiter attack rate is a function of the sampling frequency, Fs, and the
soft and zero cross setting.
RRate[5:0] Setting
EnThLim Setting
ARate[5:0] Setting
000000 ................................Fastest release.
111111..................................Slowest release.
0 ..........................................Thermal limiter disabled.
1 ..........................................Thermal limiter enabled.
00000 ..................................Fastest attack.
11111....................................Slowest attack.
39.
...................................
...................................
Reserved
Reserved
6
6
RRate5
ARate5
Limiter Release Rate
Thermal Limiter State
Limiter Attack Rate
5
5
RRate4
ARate4
4
4
RRate3
ARate3
3
3
RRate2
ARate2
2
2
“Thermal Limiter” section on
RRate1
ARate1
1
1
CS4525
RRate0
ARate0
0
0
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