LM49350RLX/NOPB National Semiconductor, LM49350RLX/NOPB Datasheet - Page 66

• Manufacturer Part Number: LM49350RLX/NOPB
• Description: IC AUDIO SUBSYSTM .8W D 36USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class Dr

Specifications of LM49350RLX/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 2W x 1 @ 4 Ohm; 69mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, DAC, Depop, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49350RLX

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Bits
4:0
7:5
PK_DECAY_RATE
DECAY_RATE
Field
This sets the rate at which the ALC will increase gain if it detects the input signal is too
small.
TABLE 52. ADC_ALC_5 (0x85h)
PK_DECAY_RATE
DECAY_RATE
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
000
001
010
011
100
101
110
111
66
Description
Time between gain steps (μs)
Max Time to track decay
500000 (0.5s)
2.73 secs
42.6.3ms
100000
125000
160000
225000
300000
375000
10.6ms
21.3ms
85.5ms
11000
14000
18500
25000
32000
42000
55000
72500
1.3ms
2.6ms
5.3ms
1250
1396
2000
2708
3500
4750
6250
8000
104
125
167
250
292
396
500
708
896