LM4937RL/NOPB National Semiconductor, LM4937RL/NOPB Datasheet - Page 15

• Manufacturer Part Number: LM4937RL/NOPB
• Description: IC AUDIO SUBSYSTM 1.25W 36USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4937RL/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.25W x 1 @ 8 Ohm; 80mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Differential Inputs, I²C, I²S, Mute, Shutdown, SPI, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4937RLTR

System Controls
HP_L_VOL_4,
HP_R_VOL_4
EP_VOL_4,
LS_VOL_4,
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
HP_L_VOL_3,
HP_R_VOL_3
EP_VOL_3,
LS_VOL_3,
TABLE 7. Loudspeaker, Earpiece, HP Left or Right Volume Control
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
HP_L_VOL_2,
HP_R_VOL_2
EP_VOL_2,
LS_VOL_2,
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
15
HP_L_VOL_1,
HP_R_VOL_1
EP_VOL_1,
LS_VOL_1,
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
HP_L_VOL_0,
HP_R_VOL_0
EP_VOL_0,
LS_VOL_0,
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
<–90 (MUTE)
Gain (dB)
–56
–52
–48
–45
–42
–39
–36
–33
–30
–28
–26
–24
–22
–20
–18
–16
–14
–12
–10
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+1
+2
+3
+4
+5
–8
–6
–4
–3
–2
–1
0